[linux-kernel] Update patches for v2
* Reduce stack usage of many zstd functions, none use over 388 B anymore. * Remove an incorrect `const` in `xxhash`.
This commit is contained in:
Nick Terrell
parent
379f9d874d
commit
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96
contrib/linux-kernel/0000-cover-letter.patch
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96
contrib/linux-kernel/0000-cover-letter.patch
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@ -0,0 +1,96 @@
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From 8bc9a0ae5c86a6d02d9a5274b9965ddac0e8d330 Mon Sep 17 00:00:00 2001
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From: Nick Terrell <terrelln@fb.com>
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Date: Wed, 28 Jun 2017 22:00:00 -0700
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Subject: [PATCH v2 0/4] Add xxhash and zstd modules
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Hi all,
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This patch set adds xxhash, zstd compression, and zstd decompression
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modules. It also adds zstd support to BtrFS and SquashFS.
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Each patch has relevant summaries, benchmarks, and tests.
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Best,
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Nick Terrell
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Changelog:
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v1 -> v2:
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- Make pointer in lib/xxhash.c:394 non-const (1/4)
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- Use div_u64() for division of u64s (2/4)
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- Reduce stack usage of ZSTD_compressSequences(), ZSTD_buildSeqTable(),
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ZSTD_decompressSequencesLong(), FSE_buildDTable(), FSE_decompress_wksp(),
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HUF_writeCTable(), HUF_readStats(), HUF_readCTable(),
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HUF_compressWeights(), HUF_readDTableX2(), and HUF_readDTableX4() (2/4)
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- No zstd function uses more than 400 B of stack space (2/4)
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Nick Terrell (4):
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lib: Add xxhash module
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lib: Add zstd modules
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btrfs: Add zstd support
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squashfs: Add zstd support
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fs/btrfs/Kconfig | 2 +
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fs/btrfs/Makefile | 2 +-
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fs/btrfs/compression.c | 1 +
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fs/btrfs/compression.h | 6 +-
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fs/btrfs/ctree.h | 1 +
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fs/btrfs/disk-io.c | 2 +
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fs/btrfs/ioctl.c | 6 +-
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fs/btrfs/props.c | 6 +
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fs/btrfs/super.c | 12 +-
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fs/btrfs/sysfs.c | 2 +
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fs/btrfs/zstd.c | 433 ++++++
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fs/squashfs/Kconfig | 14 +
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fs/squashfs/Makefile | 1 +
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fs/squashfs/decompressor.c | 7 +
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fs/squashfs/decompressor.h | 4 +
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fs/squashfs/squashfs_fs.h | 1 +
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fs/squashfs/zstd_wrapper.c | 150 ++
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include/linux/xxhash.h | 236 +++
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include/linux/zstd.h | 1157 +++++++++++++++
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include/uapi/linux/btrfs.h | 8 +-
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lib/Kconfig | 11 +
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lib/Makefile | 3 +
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lib/xxhash.c | 500 +++++++
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lib/zstd/Makefile | 18 +
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lib/zstd/bitstream.h | 374 +++++
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lib/zstd/compress.c | 3479 ++++++++++++++++++++++++++++++++++++++++++++
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lib/zstd/decompress.c | 2526 ++++++++++++++++++++++++++++++++
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lib/zstd/entropy_common.c | 243 ++++
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lib/zstd/error_private.h | 53 +
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lib/zstd/fse.h | 575 ++++++++
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lib/zstd/fse_compress.c | 795 ++++++++++
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lib/zstd/fse_decompress.c | 332 +++++
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lib/zstd/huf.h | 212 +++
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lib/zstd/huf_compress.c | 771 ++++++++++
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lib/zstd/huf_decompress.c | 960 ++++++++++++
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lib/zstd/mem.h | 151 ++
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lib/zstd/zstd_common.c | 75 +
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lib/zstd/zstd_internal.h | 269 ++++
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lib/zstd/zstd_opt.h | 1014 +++++++++++++
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39 files changed, 14400 insertions(+), 12 deletions(-)
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create mode 100644 fs/btrfs/zstd.c
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create mode 100644 fs/squashfs/zstd_wrapper.c
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create mode 100644 include/linux/xxhash.h
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create mode 100644 include/linux/zstd.h
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create mode 100644 lib/xxhash.c
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create mode 100644 lib/zstd/Makefile
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create mode 100644 lib/zstd/bitstream.h
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create mode 100644 lib/zstd/compress.c
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create mode 100644 lib/zstd/decompress.c
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create mode 100644 lib/zstd/entropy_common.c
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create mode 100644 lib/zstd/error_private.h
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create mode 100644 lib/zstd/fse.h
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create mode 100644 lib/zstd/fse_compress.c
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create mode 100644 lib/zstd/fse_decompress.c
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create mode 100644 lib/zstd/huf.h
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create mode 100644 lib/zstd/huf_compress.c
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create mode 100644 lib/zstd/huf_decompress.c
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create mode 100644 lib/zstd/mem.h
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create mode 100644 lib/zstd/zstd_common.c
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create mode 100644 lib/zstd/zstd_internal.h
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create mode 100644 lib/zstd/zstd_opt.h
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--
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2.9.3
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@ -1,7 +1,7 @@
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From e75beb7c2e05550b2846e31ad8a0082c188504da Mon Sep 17 00:00:00 2001
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From 5ac909c415ab4a18fd90794793c96e450795e8c6 Mon Sep 17 00:00:00 2001
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From: Nick Terrell <terrelln@fb.com>
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Date: Wed, 21 Jun 2017 17:27:42 -0700
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Subject: [PATCH 1/4] lib: Add xxhash module
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Date: Wed, 21 Jun 2017 17:37:36 -0700
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Subject: [PATCH v2 1/4] lib: Add xxhash module
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Adds xxhash kernel module with xxh32 and xxh64 hashes. xxhash is an
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extremely fast non-cryptographic hash algorithm for checksumming.
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@ -73,6 +73,9 @@ XXHash source repository: https://github.com/cyan4973/xxhash
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Signed-off-by: Nick Terrell <terrelln@fb.com>
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---
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v1 -> v2:
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- Make pointer in lib/xxhash.c:394 non-const
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include/linux/xxhash.h | 236 +++++++++++++++++++++++
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lib/Kconfig | 3 +
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lib/Makefile | 1 +
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@ -351,7 +354,7 @@ index 0166fbc..1338226 100644
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obj-$(CONFIG_842_COMPRESS) += 842/
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diff --git a/lib/xxhash.c b/lib/xxhash.c
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new file mode 100644
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index 0000000..dc94904
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index 0000000..aa61e2a
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--- /dev/null
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+++ b/lib/xxhash.c
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@@ -0,0 +1,500 @@
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@ -748,7 +751,7 @@ index 0000000..dc94904
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+ }
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+
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+ if (state->memsize) { /* tmp buffer is full */
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+ const uint64_t *p64 = state->mem64;
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+ uint64_t *p64 = state->mem64;
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+
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+ memcpy(((uint8_t *)p64) + state->memsize, input,
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+ 32 - state->memsize);
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@ -857,4 +860,3 @@ index 0000000..dc94904
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+MODULE_DESCRIPTION("xxHash");
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--
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2.9.3
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File diff suppressed because it is too large
Load Diff
@ -1,7 +1,7 @@
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From 599f8f2aaace3df939cb145368574a52268d82d0 Mon Sep 17 00:00:00 2001
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From: Nick Terrell <terrelln@fb.com>
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Date: Wed, 21 Jun 2017 17:31:39 -0700
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Subject: [PATCH 3/4] btrfs: Add zstd support
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Subject: [PATCH v2 3/4] btrfs: Add zstd support
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Add zstd compression and decompression support to BtrFS. zstd at its
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fastest level compresses almost as well as zlib, while offering much
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@ -1,7 +1,7 @@
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From 5ff6a64abaea7b7f11d37cb0fdf08642316a3a90 Mon Sep 17 00:00:00 2001
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From: Nick Terrell <terrelln@fb.com>
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Date: Mon, 12 Jun 2017 12:18:23 -0700
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Subject: [PATCH 4/4] squashfs: Add zstd support
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Subject: [PATCH v2 4/4] squashfs: Add zstd support
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Add zstd compression and decompression support to SquashFS. zstd is a
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great fit for SquashFS because it can compress at ratios approaching xz,
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@ -391,7 +391,7 @@ int xxh64_update(struct xxh64_state *state, const void *input, const size_t len)
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}
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if (state->memsize) { /* tmp buffer is full */
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const uint64_t *p64 = state->mem64;
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uint64_t *p64 = state->mem64;
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memcpy(((uint8_t *)p64) + state->memsize, input,
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32 - state->memsize);
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@ -84,7 +84,7 @@ struct ZSTD_CCtx_s {
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FSE_CTable offcodeCTable[FSE_CTABLE_SIZE_U32(OffFSELog, MaxOff)];
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FSE_CTable matchlengthCTable[FSE_CTABLE_SIZE_U32(MLFSELog, MaxML)];
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FSE_CTable litlengthCTable[FSE_CTABLE_SIZE_U32(LLFSELog, MaxLL)];
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unsigned tmpCounters[HUF_WORKSPACE_SIZE_U32];
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unsigned tmpCounters[HUF_COMPRESS_WORKSPACE_SIZE_U32];
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};
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size_t ZSTD_CCtxWorkspaceBound(ZSTD_compressionParameters cParams)
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@ -587,8 +587,6 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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{
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const int longOffsets = zc->params.cParams.windowLog > STREAM_ACCUMULATOR_MIN;
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const seqStore_t *seqStorePtr = &(zc->seqStore);
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U32 count[MaxSeq + 1];
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S16 norm[MaxSeq + 1];
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FSE_CTable *CTable_LitLength = zc->litlengthCTable;
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FSE_CTable *CTable_OffsetBits = zc->offcodeCTable;
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FSE_CTable *CTable_MatchLength = zc->matchlengthCTable;
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@ -602,7 +600,21 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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BYTE *op = ostart;
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size_t const nbSeq = seqStorePtr->sequences - seqStorePtr->sequencesStart;
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BYTE *seqHead;
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BYTE scratchBuffer[1 << MAX(MLFSELog, LLFSELog)];
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U32 *count;
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S16 *norm;
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U32 *workspace;
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size_t workspaceSize = sizeof(zc->tmpCounters);
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{
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size_t spaceUsed32 = 0;
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count = (U32 *)zc->tmpCounters + spaceUsed32;
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spaceUsed32 += MaxSeq + 1;
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norm = (S16 *)((U32 *)zc->tmpCounters + spaceUsed32);
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spaceUsed32 += ALIGN(sizeof(S16) * (MaxSeq + 1), sizeof(U32)) >> 2;
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workspace = (U32 *)zc->tmpCounters + spaceUsed32;
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workspaceSize -= (spaceUsed32 << 2);
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}
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/* Compress literals */
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{
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@ -638,7 +650,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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/* CTable for Literal Lengths */
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{
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U32 max = MaxLL;
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size_t const mostFrequent = FSE_countFast_wksp(count, &max, llCodeTable, nbSeq, zc->tmpCounters);
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size_t const mostFrequent = FSE_countFast_wksp(count, &max, llCodeTable, nbSeq, workspace);
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if ((mostFrequent == nbSeq) && (nbSeq > 2)) {
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*op++ = llCodeTable[0];
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FSE_buildCTable_rle(CTable_LitLength, (BYTE)max);
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@ -646,7 +658,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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} else if ((zc->flagStaticTables) && (nbSeq < MAX_SEQ_FOR_STATIC_FSE)) {
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LLtype = set_repeat;
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} else if ((nbSeq < MIN_SEQ_FOR_DYNAMIC_FSE) || (mostFrequent < (nbSeq >> (LL_defaultNormLog - 1)))) {
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FSE_buildCTable_wksp(CTable_LitLength, LL_defaultNorm, MaxLL, LL_defaultNormLog, scratchBuffer, sizeof(scratchBuffer));
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FSE_buildCTable_wksp(CTable_LitLength, LL_defaultNorm, MaxLL, LL_defaultNormLog, workspace, workspaceSize);
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LLtype = set_basic;
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} else {
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size_t nbSeq_1 = nbSeq;
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@ -662,7 +674,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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return NCountSize;
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op += NCountSize;
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}
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FSE_buildCTable_wksp(CTable_LitLength, norm, max, tableLog, scratchBuffer, sizeof(scratchBuffer));
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FSE_buildCTable_wksp(CTable_LitLength, norm, max, tableLog, workspace, workspaceSize);
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LLtype = set_compressed;
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}
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}
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@ -670,7 +682,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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/* CTable for Offsets */
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{
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U32 max = MaxOff;
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size_t const mostFrequent = FSE_countFast_wksp(count, &max, ofCodeTable, nbSeq, zc->tmpCounters);
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size_t const mostFrequent = FSE_countFast_wksp(count, &max, ofCodeTable, nbSeq, workspace);
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if ((mostFrequent == nbSeq) && (nbSeq > 2)) {
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*op++ = ofCodeTable[0];
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FSE_buildCTable_rle(CTable_OffsetBits, (BYTE)max);
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@ -678,7 +690,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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} else if ((zc->flagStaticTables) && (nbSeq < MAX_SEQ_FOR_STATIC_FSE)) {
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Offtype = set_repeat;
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} else if ((nbSeq < MIN_SEQ_FOR_DYNAMIC_FSE) || (mostFrequent < (nbSeq >> (OF_defaultNormLog - 1)))) {
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FSE_buildCTable_wksp(CTable_OffsetBits, OF_defaultNorm, MaxOff, OF_defaultNormLog, scratchBuffer, sizeof(scratchBuffer));
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FSE_buildCTable_wksp(CTable_OffsetBits, OF_defaultNorm, MaxOff, OF_defaultNormLog, workspace, workspaceSize);
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Offtype = set_basic;
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} else {
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size_t nbSeq_1 = nbSeq;
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@ -694,7 +706,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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return NCountSize;
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op += NCountSize;
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}
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FSE_buildCTable_wksp(CTable_OffsetBits, norm, max, tableLog, scratchBuffer, sizeof(scratchBuffer));
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FSE_buildCTable_wksp(CTable_OffsetBits, norm, max, tableLog, workspace, workspaceSize);
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Offtype = set_compressed;
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}
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}
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@ -702,7 +714,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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/* CTable for MatchLengths */
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{
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U32 max = MaxML;
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size_t const mostFrequent = FSE_countFast_wksp(count, &max, mlCodeTable, nbSeq, zc->tmpCounters);
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size_t const mostFrequent = FSE_countFast_wksp(count, &max, mlCodeTable, nbSeq, workspace);
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if ((mostFrequent == nbSeq) && (nbSeq > 2)) {
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*op++ = *mlCodeTable;
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FSE_buildCTable_rle(CTable_MatchLength, (BYTE)max);
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@ -710,7 +722,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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} else if ((zc->flagStaticTables) && (nbSeq < MAX_SEQ_FOR_STATIC_FSE)) {
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MLtype = set_repeat;
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} else if ((nbSeq < MIN_SEQ_FOR_DYNAMIC_FSE) || (mostFrequent < (nbSeq >> (ML_defaultNormLog - 1)))) {
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FSE_buildCTable_wksp(CTable_MatchLength, ML_defaultNorm, MaxML, ML_defaultNormLog, scratchBuffer, sizeof(scratchBuffer));
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FSE_buildCTable_wksp(CTable_MatchLength, ML_defaultNorm, MaxML, ML_defaultNormLog, workspace, workspaceSize);
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MLtype = set_basic;
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} else {
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size_t nbSeq_1 = nbSeq;
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@ -726,7 +738,7 @@ ZSTD_STATIC size_t ZSTD_compressSequences(ZSTD_CCtx *zc, void *dst, size_t dstCa
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return NCountSize;
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op += NCountSize;
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}
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FSE_buildCTable_wksp(CTable_MatchLength, norm, max, tableLog, scratchBuffer, sizeof(scratchBuffer));
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FSE_buildCTable_wksp(CTable_MatchLength, norm, max, tableLog, workspace, workspaceSize);
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MLtype = set_compressed;
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}
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}
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@ -2612,14 +2624,13 @@ static size_t ZSTD_loadZstdDictionary(ZSTD_CCtx *cctx, const void *dict, size_t
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const BYTE *const dictEnd = dictPtr + dictSize;
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short offcodeNCount[MaxOff + 1];
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unsigned offcodeMaxValue = MaxOff;
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BYTE scratchBuffer[1 << MAX(MLFSELog, LLFSELog)];
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dictPtr += 4; /* skip magic number */
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cctx->dictID = cctx->params.fParams.noDictIDFlag ? 0 : ZSTD_readLE32(dictPtr);
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dictPtr += 4;
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{
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size_t const hufHeaderSize = HUF_readCTable(cctx->hufTable, 255, dictPtr, dictEnd - dictPtr);
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size_t const hufHeaderSize = HUF_readCTable_wksp(cctx->hufTable, 255, dictPtr, dictEnd - dictPtr, cctx->tmpCounters, sizeof(cctx->tmpCounters));
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if (HUF_isError(hufHeaderSize))
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return ERROR(dictionary_corrupted);
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dictPtr += hufHeaderSize;
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@ -2633,7 +2644,7 @@ static size_t ZSTD_loadZstdDictionary(ZSTD_CCtx *cctx, const void *dict, size_t
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if (offcodeLog > OffFSELog)
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return ERROR(dictionary_corrupted);
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/* Defer checking offcodeMaxValue because we need to know the size of the dictionary content */
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CHECK_E(FSE_buildCTable_wksp(cctx->offcodeCTable, offcodeNCount, offcodeMaxValue, offcodeLog, scratchBuffer, sizeof(scratchBuffer)),
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CHECK_E(FSE_buildCTable_wksp(cctx->offcodeCTable, offcodeNCount, offcodeMaxValue, offcodeLog, cctx->tmpCounters, sizeof(cctx->tmpCounters)),
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dictionary_corrupted);
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dictPtr += offcodeHeaderSize;
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}
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@ -2649,7 +2660,7 @@ static size_t ZSTD_loadZstdDictionary(ZSTD_CCtx *cctx, const void *dict, size_t
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/* Every match length code must have non-zero probability */
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CHECK_F(ZSTD_checkDictNCount(matchlengthNCount, matchlengthMaxValue, MaxML));
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CHECK_E(
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FSE_buildCTable_wksp(cctx->matchlengthCTable, matchlengthNCount, matchlengthMaxValue, matchlengthLog, scratchBuffer, sizeof(scratchBuffer)),
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FSE_buildCTable_wksp(cctx->matchlengthCTable, matchlengthNCount, matchlengthMaxValue, matchlengthLog, cctx->tmpCounters, sizeof(cctx->tmpCounters)),
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dictionary_corrupted);
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dictPtr += matchlengthHeaderSize;
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}
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@ -2664,7 +2675,7 @@ static size_t ZSTD_loadZstdDictionary(ZSTD_CCtx *cctx, const void *dict, size_t
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return ERROR(dictionary_corrupted);
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/* Every literal length code must have non-zero probability */
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CHECK_F(ZSTD_checkDictNCount(litlengthNCount, litlengthMaxValue, MaxLL));
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CHECK_E(FSE_buildCTable_wksp(cctx->litlengthCTable, litlengthNCount, litlengthMaxValue, litlengthLog, scratchBuffer, sizeof(scratchBuffer)),
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CHECK_E(FSE_buildCTable_wksp(cctx->litlengthCTable, litlengthNCount, litlengthMaxValue, litlengthLog, cctx->tmpCounters, sizeof(cctx->tmpCounters)),
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dictionary_corrupted);
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dictPtr += litlengthHeaderSize;
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}
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|
||||
@ -70,6 +70,7 @@ typedef struct {
|
||||
FSE_DTable OFTable[FSE_DTABLE_SIZE_U32(OffFSELog)];
|
||||
FSE_DTable MLTable[FSE_DTABLE_SIZE_U32(MLFSELog)];
|
||||
HUF_DTable hufTable[HUF_DTABLE_SIZE(HufLog)]; /* can accommodate HUF_decompress4X */
|
||||
U64 workspace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32 / 2];
|
||||
U32 rep[ZSTD_REP_NUM];
|
||||
} ZSTD_entropyTables_t;
|
||||
|
||||
@ -483,8 +484,10 @@ size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx *dctx, const void *src, size_t srcSize
|
||||
? (singleStream ? HUF_decompress1X_usingDTable(dctx->litBuffer, litSize, istart + lhSize, litCSize, dctx->HUFptr)
|
||||
: HUF_decompress4X_usingDTable(dctx->litBuffer, litSize, istart + lhSize, litCSize, dctx->HUFptr))
|
||||
: (singleStream
|
||||
? HUF_decompress1X2_DCtx(dctx->entropy.hufTable, dctx->litBuffer, litSize, istart + lhSize, litCSize)
|
||||
: HUF_decompress4X_hufOnly(dctx->entropy.hufTable, dctx->litBuffer, litSize, istart + lhSize, litCSize))))
|
||||
? HUF_decompress1X2_DCtx_wksp(dctx->entropy.hufTable, dctx->litBuffer, litSize, istart + lhSize, litCSize,
|
||||
dctx->entropy.workspace, sizeof(dctx->entropy.workspace))
|
||||
: HUF_decompress4X_hufOnly_wksp(dctx->entropy.hufTable, dctx->litBuffer, litSize, istart + lhSize, litCSize,
|
||||
dctx->entropy.workspace, sizeof(dctx->entropy.workspace)))))
|
||||
return ERROR(corruption_detected);
|
||||
|
||||
dctx->litPtr = dctx->litBuffer;
|
||||
@ -747,7 +750,7 @@ static const FSE_decode_t4 OF_defaultDTable[(1 << OF_DEFAULTNORMLOG) + 1] = {
|
||||
or an error code if it fails, testable with ZSTD_isError()
|
||||
*/
|
||||
static size_t ZSTD_buildSeqTable(FSE_DTable *DTableSpace, const FSE_DTable **DTablePtr, symbolEncodingType_e type, U32 max, U32 maxLog, const void *src,
|
||||
size_t srcSize, const FSE_decode_t4 *defaultTable, U32 flagRepeatTable)
|
||||
size_t srcSize, const FSE_decode_t4 *defaultTable, U32 flagRepeatTable, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
const void *const tmpPtr = defaultTable; /* bypass strict aliasing */
|
||||
switch (type) {
|
||||
@ -767,18 +770,26 @@ static size_t ZSTD_buildSeqTable(FSE_DTable *DTableSpace, const FSE_DTable **DTa
|
||||
default: /* impossible */
|
||||
case set_compressed: {
|
||||
U32 tableLog;
|
||||
S16 norm[MaxSeq + 1];
|
||||
S16 *norm = (S16 *)workspace;
|
||||
size_t const spaceUsed32 = ALIGN(sizeof(S16) * (MaxSeq + 1), sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(GENERIC);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
{
|
||||
size_t const headerSize = FSE_readNCount(norm, &max, &tableLog, src, srcSize);
|
||||
if (FSE_isError(headerSize))
|
||||
return ERROR(corruption_detected);
|
||||
if (tableLog > maxLog)
|
||||
return ERROR(corruption_detected);
|
||||
FSE_buildDTable(DTableSpace, norm, max, tableLog);
|
||||
FSE_buildDTable_wksp(DTableSpace, norm, max, tableLog, workspace, workspaceSize);
|
||||
*DTablePtr = DTableSpace;
|
||||
return headerSize;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx *dctx, int *nbSeqPtr, const void *src, size_t srcSize)
|
||||
{
|
||||
@ -823,21 +834,21 @@ size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx *dctx, int *nbSeqPtr, const void *src, si
|
||||
/* Build DTables */
|
||||
{
|
||||
size_t const llhSize = ZSTD_buildSeqTable(dctx->entropy.LLTable, &dctx->LLTptr, LLtype, MaxLL, LLFSELog, ip, iend - ip,
|
||||
LL_defaultDTable, dctx->fseEntropy);
|
||||
LL_defaultDTable, dctx->fseEntropy, dctx->entropy.workspace, sizeof(dctx->entropy.workspace));
|
||||
if (ZSTD_isError(llhSize))
|
||||
return ERROR(corruption_detected);
|
||||
ip += llhSize;
|
||||
}
|
||||
{
|
||||
size_t const ofhSize = ZSTD_buildSeqTable(dctx->entropy.OFTable, &dctx->OFTptr, OFtype, MaxOff, OffFSELog, ip, iend - ip,
|
||||
OF_defaultDTable, dctx->fseEntropy);
|
||||
OF_defaultDTable, dctx->fseEntropy, dctx->entropy.workspace, sizeof(dctx->entropy.workspace));
|
||||
if (ZSTD_isError(ofhSize))
|
||||
return ERROR(corruption_detected);
|
||||
ip += ofhSize;
|
||||
}
|
||||
{
|
||||
size_t const mlhSize = ZSTD_buildSeqTable(dctx->entropy.MLTable, &dctx->MLTptr, MLtype, MaxML, MLFSELog, ip, iend - ip,
|
||||
ML_defaultDTable, dctx->fseEntropy);
|
||||
ML_defaultDTable, dctx->fseEntropy, dctx->entropy.workspace, sizeof(dctx->entropy.workspace));
|
||||
if (ZSTD_isError(mlhSize))
|
||||
return ERROR(corruption_detected);
|
||||
ip += mlhSize;
|
||||
@ -1360,10 +1371,11 @@ static size_t ZSTD_decompressSequencesLong(ZSTD_DCtx *dctx, void *dst, size_t ma
|
||||
#define STORED_SEQS 4
|
||||
#define STOSEQ_MASK (STORED_SEQS - 1)
|
||||
#define ADVANCED_SEQS 4
|
||||
seq_t sequences[STORED_SEQS];
|
||||
seq_t *sequences = (seq_t *)dctx->entropy.workspace;
|
||||
int const seqAdvance = MIN(nbSeq, ADVANCED_SEQS);
|
||||
seqState_t seqState;
|
||||
int seqNb;
|
||||
ZSTD_STATIC_ASSERT(sizeof(dctx->entropy.workspace) >= sizeof(seq_t) * STORED_SEQS);
|
||||
dctx->fseEntropy = 1;
|
||||
{
|
||||
U32 i;
|
||||
@ -1866,7 +1878,7 @@ static size_t ZSTD_loadEntropy(ZSTD_entropyTables_t *entropy, const void *const
|
||||
dictPtr += 8; /* skip header = magic + dictID */
|
||||
|
||||
{
|
||||
size_t const hSize = HUF_readDTableX4(entropy->hufTable, dictPtr, dictEnd - dictPtr);
|
||||
size_t const hSize = HUF_readDTableX4_wksp(entropy->hufTable, dictPtr, dictEnd - dictPtr, entropy->workspace, sizeof(entropy->workspace));
|
||||
if (HUF_isError(hSize))
|
||||
return ERROR(dictionary_corrupted);
|
||||
dictPtr += hSize;
|
||||
@ -1880,7 +1892,7 @@ static size_t ZSTD_loadEntropy(ZSTD_entropyTables_t *entropy, const void *const
|
||||
return ERROR(dictionary_corrupted);
|
||||
if (offcodeLog > OffFSELog)
|
||||
return ERROR(dictionary_corrupted);
|
||||
CHECK_E(FSE_buildDTable(entropy->OFTable, offcodeNCount, offcodeMaxValue, offcodeLog), dictionary_corrupted);
|
||||
CHECK_E(FSE_buildDTable_wksp(entropy->OFTable, offcodeNCount, offcodeMaxValue, offcodeLog, entropy->workspace, sizeof(entropy->workspace)), dictionary_corrupted);
|
||||
dictPtr += offcodeHeaderSize;
|
||||
}
|
||||
|
||||
@ -1892,7 +1904,7 @@ static size_t ZSTD_loadEntropy(ZSTD_entropyTables_t *entropy, const void *const
|
||||
return ERROR(dictionary_corrupted);
|
||||
if (matchlengthLog > MLFSELog)
|
||||
return ERROR(dictionary_corrupted);
|
||||
CHECK_E(FSE_buildDTable(entropy->MLTable, matchlengthNCount, matchlengthMaxValue, matchlengthLog), dictionary_corrupted);
|
||||
CHECK_E(FSE_buildDTable_wksp(entropy->MLTable, matchlengthNCount, matchlengthMaxValue, matchlengthLog, entropy->workspace, sizeof(entropy->workspace)), dictionary_corrupted);
|
||||
dictPtr += matchlengthHeaderSize;
|
||||
}
|
||||
|
||||
@ -1904,7 +1916,7 @@ static size_t ZSTD_loadEntropy(ZSTD_entropyTables_t *entropy, const void *const
|
||||
return ERROR(dictionary_corrupted);
|
||||
if (litlengthLog > LLFSELog)
|
||||
return ERROR(dictionary_corrupted);
|
||||
CHECK_E(FSE_buildDTable(entropy->LLTable, litlengthNCount, litlengthMaxValue, litlengthLog), dictionary_corrupted);
|
||||
CHECK_E(FSE_buildDTable_wksp(entropy->LLTable, litlengthNCount, litlengthMaxValue, litlengthLog, entropy->workspace, sizeof(entropy->workspace)), dictionary_corrupted);
|
||||
dictPtr += litlengthHeaderSize;
|
||||
}
|
||||
|
||||
|
||||
@ -164,7 +164,7 @@ size_t FSE_readNCount(short *normalizedCounter, unsigned *maxSVPtr, unsigned *ta
|
||||
@return : size read from `src` , or an error Code .
|
||||
Note : Needed by HUF_readCTable() and HUF_readDTableX?() .
|
||||
*/
|
||||
size_t HUF_readStats(BYTE *huffWeight, size_t hwSize, U32 *rankStats, U32 *nbSymbolsPtr, U32 *tableLogPtr, const void *src, size_t srcSize)
|
||||
size_t HUF_readStats_wksp(BYTE *huffWeight, size_t hwSize, U32 *rankStats, U32 *nbSymbolsPtr, U32 *tableLogPtr, const void *src, size_t srcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
U32 weightTotal;
|
||||
const BYTE *ip = (const BYTE *)src;
|
||||
@ -192,10 +192,9 @@ size_t HUF_readStats(BYTE *huffWeight, size_t hwSize, U32 *rankStats, U32 *nbSym
|
||||
}
|
||||
}
|
||||
} else { /* header compressed with FSE (normal case) */
|
||||
FSE_DTable fseWorkspace[FSE_DTABLE_SIZE_U32(6)]; /* 6 is max possible tableLog for HUF header (maybe even 5, to be tested) */
|
||||
if (iSize + 1 > srcSize)
|
||||
return ERROR(srcSize_wrong);
|
||||
oSize = FSE_decompress_wksp(huffWeight, hwSize - 1, ip + 1, iSize, fseWorkspace, 6); /* max (hwSize-1) values decoded, as last one is implied */
|
||||
oSize = FSE_decompress_wksp(huffWeight, hwSize - 1, ip + 1, iSize, 6, workspace, workspaceSize); /* max (hwSize-1) values decoded, as last one is implied */
|
||||
if (FSE_isError(oSize))
|
||||
return oSize;
|
||||
}
|
||||
|
||||
@ -187,7 +187,7 @@ typedef unsigned FSE_DTable; /* don't allocate that. It's just a way to be more
|
||||
/*! FSE_buildDTable():
|
||||
Builds 'dt', which must be already allocated, using FSE_createDTable().
|
||||
return : 0, or an errorCode, which can be tested using FSE_isError() */
|
||||
FSE_PUBLIC_API size_t FSE_buildDTable(FSE_DTable *dt, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog);
|
||||
FSE_PUBLIC_API size_t FSE_buildDTable_wksp(FSE_DTable *dt, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void *workspace, size_t workspaceSize);
|
||||
|
||||
/*! FSE_decompress_usingDTable():
|
||||
Decompress compressed source `cSrc` of size `cSrcSize` using `dt`
|
||||
@ -263,15 +263,6 @@ size_t FSE_count_simple(unsigned *count, unsigned *maxSymbolValuePtr, const void
|
||||
unsigned FSE_optimalTableLog_internal(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue, unsigned minus);
|
||||
/**< same as FSE_optimalTableLog(), which used `minus==2` */
|
||||
|
||||
/* FSE_compress_wksp() :
|
||||
* Same as FSE_compress2(), but using an externally allocated scratch buffer (`workSpace`).
|
||||
* FSE_WKSP_SIZE_U32() provides the minimum size required for `workSpace` as a table of FSE_CTable.
|
||||
*/
|
||||
#define FSE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) \
|
||||
(FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) + ((maxTableLog > 12) ? (1 << (maxTableLog - 2)) : 1024))
|
||||
size_t FSE_compress_wksp(void *dst, size_t dstSize, const void *src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void *workSpace,
|
||||
size_t wkspSize);
|
||||
|
||||
size_t FSE_buildCTable_raw(FSE_CTable *ct, unsigned nbBits);
|
||||
/**< build a fake FSE_CTable, designed for a flat distribution, where each symbol uses nbBits */
|
||||
|
||||
@ -290,7 +281,7 @@ size_t FSE_buildDTable_raw(FSE_DTable *dt, unsigned nbBits);
|
||||
size_t FSE_buildDTable_rle(FSE_DTable *dt, unsigned char symbolValue);
|
||||
/**< build a fake FSE_DTable, designed to always generate the same symbolValue */
|
||||
|
||||
size_t FSE_decompress_wksp(void *dst, size_t dstCapacity, const void *cSrc, size_t cSrcSize, FSE_DTable *workSpace, unsigned maxLog);
|
||||
size_t FSE_decompress_wksp(void *dst, size_t dstCapacity, const void *cSrc, size_t cSrcSize, unsigned maxLog, void *workspace, size_t workspaceSize);
|
||||
/**< same as FSE_decompress(), using an externally allocated `workSpace` produced with `FSE_DTABLE_SIZE_U32(maxLog)` */
|
||||
|
||||
/* *****************************************
|
||||
|
||||
@ -48,6 +48,8 @@
|
||||
#include "bitstream.h"
|
||||
#include "fse.h"
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/math64.h>
|
||||
#include <linux/string.h> /* memcpy, memset */
|
||||
|
||||
/* **************************************************************
|
||||
@ -87,7 +89,7 @@
|
||||
* wkspSize should be sized to handle worst case situation, which is `1<<max_tableLog * sizeof(FSE_FUNCTION_TYPE)`
|
||||
* workSpace must also be properly aligned with FSE_FUNCTION_TYPE requirements
|
||||
*/
|
||||
size_t FSE_buildCTable_wksp(FSE_CTable *ct, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void *workSpace, size_t wkspSize)
|
||||
size_t FSE_buildCTable_wksp(FSE_CTable *ct, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
U32 const tableSize = 1 << tableLog;
|
||||
U32 const tableMask = tableSize - 1;
|
||||
@ -96,14 +98,23 @@ size_t FSE_buildCTable_wksp(FSE_CTable *ct, const short *normalizedCounter, unsi
|
||||
void *const FSCT = ((U32 *)ptr) + 1 /* header */ + (tableLog ? tableSize >> 1 : 1);
|
||||
FSE_symbolCompressionTransform *const symbolTT = (FSE_symbolCompressionTransform *)(FSCT);
|
||||
U32 const step = FSE_TABLESTEP(tableSize);
|
||||
U32 cumul[FSE_MAX_SYMBOL_VALUE + 2];
|
||||
|
||||
FSE_FUNCTION_TYPE *const tableSymbol = (FSE_FUNCTION_TYPE *)workSpace;
|
||||
U32 highThreshold = tableSize - 1;
|
||||
|
||||
/* CTable header */
|
||||
if (((size_t)1 << tableLog) * sizeof(FSE_FUNCTION_TYPE) > wkspSize)
|
||||
U32 *cumul;
|
||||
FSE_FUNCTION_TYPE *tableSymbol;
|
||||
size_t spaceUsed32 = 0;
|
||||
|
||||
cumul = (U32 *)workspace + spaceUsed32;
|
||||
spaceUsed32 += FSE_MAX_SYMBOL_VALUE + 2;
|
||||
tableSymbol = (FSE_FUNCTION_TYPE *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(sizeof(FSE_FUNCTION_TYPE) * ((size_t)1 << tableLog), sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
|
||||
/* CTable header */
|
||||
tableU16[-2] = (U16)tableLog;
|
||||
tableU16[-1] = (U16)maxSymbolValue;
|
||||
|
||||
@ -575,7 +586,7 @@ static size_t FSE_normalizeM2(short *norm, U32 tableLog, const unsigned *count,
|
||||
{
|
||||
U64 const vStepLog = 62 - tableLog;
|
||||
U64 const mid = (1ULL << (vStepLog - 1)) - 1;
|
||||
U64 const rStep = ((((U64)1 << vStepLog) * ToDistribute) + mid) / total; /* scale on remaining */
|
||||
U64 const rStep = div_u64((((U64)1 << vStepLog) * ToDistribute) + mid, (U32)total); /* scale on remaining */
|
||||
U64 tmpTotal = mid;
|
||||
for (s = 0; s <= maxSymbolValue; s++) {
|
||||
if (norm[s] == NOT_YET_ASSIGNED) {
|
||||
@ -609,7 +620,7 @@ size_t FSE_normalizeCount(short *normalizedCounter, unsigned tableLog, const uns
|
||||
{
|
||||
U32 const rtbTable[] = {0, 473195, 504333, 520860, 550000, 700000, 750000, 830000};
|
||||
U64 const scale = 62 - tableLog;
|
||||
U64 const step = ((U64)1 << 62) / total; /* <== here, one division ! */
|
||||
U64 const step = div_u64((U64)1 << 62, (U32)total); /* <== here, one division ! */
|
||||
U64 const vStep = 1ULL << (scale - 20);
|
||||
int stillToDistribute = 1 << tableLog;
|
||||
unsigned s;
|
||||
@ -782,76 +793,3 @@ size_t FSE_compress_usingCTable(void *dst, size_t dstSize, const void *src, size
|
||||
}
|
||||
|
||||
size_t FSE_compressBound(size_t size) { return FSE_COMPRESSBOUND(size); }
|
||||
|
||||
#define CHECK_V_F(e, f) \
|
||||
size_t const e = f; \
|
||||
if (ERR_isError(e)) \
|
||||
return f
|
||||
#define CHECK_F(f) \
|
||||
{ \
|
||||
CHECK_V_F(_var_err__, f); \
|
||||
}
|
||||
|
||||
/* FSE_compress_wksp() :
|
||||
* Same as FSE_compress2(), but using an externally allocated scratch buffer (`workSpace`).
|
||||
* `wkspSize` size must be `(1<<tableLog)`.
|
||||
*/
|
||||
size_t FSE_compress_wksp(void *dst, size_t dstSize, const void *src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void *workSpace,
|
||||
size_t wkspSize)
|
||||
{
|
||||
BYTE *const ostart = (BYTE *)dst;
|
||||
BYTE *op = ostart;
|
||||
BYTE *const oend = ostart + dstSize;
|
||||
|
||||
U32 count[FSE_MAX_SYMBOL_VALUE + 1];
|
||||
S16 norm[FSE_MAX_SYMBOL_VALUE + 1];
|
||||
FSE_CTable *CTable = (FSE_CTable *)workSpace;
|
||||
size_t const CTableSize = FSE_CTABLE_SIZE_U32(tableLog, maxSymbolValue);
|
||||
void *scratchBuffer = (void *)(CTable + CTableSize);
|
||||
size_t const scratchBufferSize = wkspSize - (CTableSize * sizeof(FSE_CTable));
|
||||
|
||||
/* init conditions */
|
||||
if (wkspSize < FSE_WKSP_SIZE_U32(tableLog, maxSymbolValue))
|
||||
return ERROR(tableLog_tooLarge);
|
||||
if (srcSize <= 1)
|
||||
return 0; /* Not compressible */
|
||||
if (!maxSymbolValue)
|
||||
maxSymbolValue = FSE_MAX_SYMBOL_VALUE;
|
||||
if (!tableLog)
|
||||
tableLog = FSE_DEFAULT_TABLELOG;
|
||||
|
||||
/* Scan input and build symbol stats */
|
||||
{
|
||||
CHECK_V_F(maxCount, FSE_count_wksp(count, &maxSymbolValue, src, srcSize, (unsigned *)scratchBuffer));
|
||||
if (maxCount == srcSize)
|
||||
return 1; /* only a single symbol in src : rle */
|
||||
if (maxCount == 1)
|
||||
return 0; /* each symbol present maximum once => not compressible */
|
||||
if (maxCount < (srcSize >> 7))
|
||||
return 0; /* Heuristic : not compressible enough */
|
||||
}
|
||||
|
||||
tableLog = FSE_optimalTableLog(tableLog, srcSize, maxSymbolValue);
|
||||
CHECK_F(FSE_normalizeCount(norm, tableLog, count, srcSize, maxSymbolValue));
|
||||
|
||||
/* Write table description header */
|
||||
{
|
||||
CHECK_V_F(nc_err, FSE_writeNCount(op, oend - op, norm, maxSymbolValue, tableLog));
|
||||
op += nc_err;
|
||||
}
|
||||
|
||||
/* Compress */
|
||||
CHECK_F(FSE_buildCTable_wksp(CTable, norm, maxSymbolValue, tableLog, scratchBuffer, scratchBufferSize));
|
||||
{
|
||||
CHECK_V_F(cSize, FSE_compress_usingCTable(op, oend - op, src, srcSize, CTable));
|
||||
if (cSize == 0)
|
||||
return 0; /* not enough space for compressed data */
|
||||
op += cSize;
|
||||
}
|
||||
|
||||
/* check compressibility */
|
||||
if ((size_t)(op - ostart) >= srcSize - 1)
|
||||
return 0;
|
||||
|
||||
return op - ostart;
|
||||
}
|
||||
|
||||
@ -48,6 +48,7 @@
|
||||
#include "bitstream.h"
|
||||
#include "fse.h"
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/string.h> /* memcpy, memset */
|
||||
|
||||
/* **************************************************************
|
||||
@ -91,17 +92,19 @@
|
||||
|
||||
/* Function templates */
|
||||
|
||||
size_t FSE_buildDTable(FSE_DTable *dt, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog)
|
||||
size_t FSE_buildDTable_wksp(FSE_DTable *dt, const short *normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
void *const tdPtr = dt + 1; /* because *dt is unsigned, 32-bits aligned on 32-bits */
|
||||
FSE_DECODE_TYPE *const tableDecode = (FSE_DECODE_TYPE *)(tdPtr);
|
||||
U16 symbolNext[FSE_MAX_SYMBOL_VALUE + 1];
|
||||
U16 *symbolNext = (U16 *)workspace;
|
||||
|
||||
U32 const maxSV1 = maxSymbolValue + 1;
|
||||
U32 const tableSize = 1 << tableLog;
|
||||
U32 highThreshold = tableSize - 1;
|
||||
|
||||
/* Sanity Checks */
|
||||
if (workspaceSize < sizeof(U16) * (FSE_MAX_SYMBOL_VALUE + 1))
|
||||
return ERROR(tableLog_tooLarge);
|
||||
if (maxSymbolValue > FSE_MAX_SYMBOL_VALUE)
|
||||
return ERROR(maxSymbolValue_tooLarge);
|
||||
if (tableLog > FSE_MAX_TABLELOG)
|
||||
@ -288,16 +291,32 @@ size_t FSE_decompress_usingDTable(void *dst, size_t originalSize, const void *cS
|
||||
return FSE_decompress_usingDTable_generic(dst, originalSize, cSrc, cSrcSize, dt, 0);
|
||||
}
|
||||
|
||||
size_t FSE_decompress_wksp(void *dst, size_t dstCapacity, const void *cSrc, size_t cSrcSize, FSE_DTable *workSpace, unsigned maxLog)
|
||||
size_t FSE_decompress_wksp(void *dst, size_t dstCapacity, const void *cSrc, size_t cSrcSize, unsigned maxLog, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
const BYTE *const istart = (const BYTE *)cSrc;
|
||||
const BYTE *ip = istart;
|
||||
short counting[FSE_MAX_SYMBOL_VALUE + 1];
|
||||
unsigned tableLog;
|
||||
unsigned maxSymbolValue = FSE_MAX_SYMBOL_VALUE;
|
||||
size_t NCountLength;
|
||||
|
||||
FSE_DTable *dt;
|
||||
short *counting;
|
||||
size_t spaceUsed32 = 0;
|
||||
|
||||
FSE_STATIC_ASSERT(sizeof(FSE_DTable) == sizeof(U32));
|
||||
|
||||
dt = (FSE_DTable *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += FSE_DTABLE_SIZE_U32(maxLog);
|
||||
counting = (short *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(sizeof(short) * (FSE_MAX_SYMBOL_VALUE + 1), sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
|
||||
/* normal FSE decoding mode */
|
||||
size_t const NCountLength = FSE_readNCount(counting, &maxSymbolValue, &tableLog, istart, cSrcSize);
|
||||
NCountLength = FSE_readNCount(counting, &maxSymbolValue, &tableLog, istart, cSrcSize);
|
||||
if (FSE_isError(NCountLength))
|
||||
return NCountLength;
|
||||
// if (NCountLength >= cSrcSize) return ERROR(srcSize_wrong); /* too small input size; supposed to be already checked in NCountLength, only remaining
|
||||
@ -307,7 +326,7 @@ size_t FSE_decompress_wksp(void *dst, size_t dstCapacity, const void *cSrc, size
|
||||
ip += NCountLength;
|
||||
cSrcSize -= NCountLength;
|
||||
|
||||
CHECK_F(FSE_buildDTable(workSpace, counting, maxSymbolValue, tableLog));
|
||||
CHECK_F(FSE_buildDTable_wksp(dt, counting, maxSymbolValue, tableLog, workspace, workspaceSize));
|
||||
|
||||
return FSE_decompress_usingDTable(dst, dstCapacity, ip, cSrcSize, workSpace); /* always return, even if it is an error code */
|
||||
return FSE_decompress_usingDTable(dst, dstCapacity, ip, cSrcSize, dt); /* always return, even if it is an error code */
|
||||
}
|
||||
|
||||
@ -55,7 +55,7 @@ unsigned HUF_isError(size_t code); /**< tells if a return value is an error code
|
||||
/** HUF_compress4X_wksp() :
|
||||
* Same as HUF_compress2(), but uses externally allocated `workSpace`, which must be a table of >= 1024 unsigned */
|
||||
size_t HUF_compress4X_wksp(void *dst, size_t dstSize, const void *src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void *workSpace,
|
||||
size_t wkspSize); /**< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U32 unsigned */
|
||||
size_t wkspSize); /**< `workSpace` must be a table of at least HUF_COMPRESS_WORKSPACE_SIZE_U32 unsigned */
|
||||
|
||||
/* *** Dependencies *** */
|
||||
#include "mem.h" /* U32 */
|
||||
@ -91,17 +91,23 @@ typedef U32 HUF_DTable;
|
||||
#define HUF_CREATE_STATIC_DTABLEX4(DTable, maxTableLog) HUF_DTable DTable[HUF_DTABLE_SIZE(maxTableLog)] = {((U32)(maxTableLog)*0x01000001)}
|
||||
|
||||
/* The workspace must have alignment at least 4 and be at least this large */
|
||||
#define HUF_WORKSPACE_SIZE (6 << 10)
|
||||
#define HUF_WORKSPACE_SIZE_U32 (HUF_WORKSPACE_SIZE / sizeof(U32))
|
||||
#define HUF_COMPRESS_WORKSPACE_SIZE (6 << 10)
|
||||
#define HUF_COMPRESS_WORKSPACE_SIZE_U32 (HUF_COMPRESS_WORKSPACE_SIZE / sizeof(U32))
|
||||
|
||||
/* The workspace must have alignment at least 4 and be at least this large */
|
||||
#define HUF_DECOMPRESS_WORKSPACE_SIZE (3 << 10)
|
||||
#define HUF_DECOMPRESS_WORKSPACE_SIZE_U32 (HUF_DECOMPRESS_WORKSPACE_SIZE / sizeof(U32))
|
||||
|
||||
/* ****************************************
|
||||
* Advanced decompression functions
|
||||
******************************************/
|
||||
size_t HUF_decompress4X_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize); /**< decodes RLE and uncompressed */
|
||||
size_t HUF_decompress4X_hufOnly(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc,
|
||||
size_t cSrcSize); /**< considers RLE and uncompressed as errors */
|
||||
size_t HUF_decompress4X2_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize); /**< single-symbol decoder */
|
||||
size_t HUF_decompress4X4_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize); /**< double-symbols decoder */
|
||||
size_t HUF_decompress4X_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize); /**< decodes RLE and uncompressed */
|
||||
size_t HUF_decompress4X_hufOnly_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace,
|
||||
size_t workspaceSize); /**< considers RLE and uncompressed as errors */
|
||||
size_t HUF_decompress4X2_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace,
|
||||
size_t workspaceSize); /**< single-symbol decoder */
|
||||
size_t HUF_decompress4X4_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace,
|
||||
size_t workspaceSize); /**< double-symbols decoder */
|
||||
|
||||
/* ****************************************
|
||||
* HUF detailed API
|
||||
@ -111,7 +117,7 @@ HUF_compress() does the following:
|
||||
1. count symbol occurrence from source[] into table count[] using FSE_count()
|
||||
2. (optional) refine tableLog using HUF_optimalTableLog()
|
||||
3. build Huffman table from count using HUF_buildCTable()
|
||||
4. save Huffman table to memory buffer using HUF_writeCTable()
|
||||
4. save Huffman table to memory buffer using HUF_writeCTable_wksp()
|
||||
5. encode the data stream using HUF_compress4X_usingCTable()
|
||||
|
||||
The following API allows targeting specific sub-functions for advanced tasks.
|
||||
@ -121,7 +127,7 @@ or to save and regenerate 'CTable' using external methods.
|
||||
/* FSE_count() : find it within "fse.h" */
|
||||
unsigned HUF_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue);
|
||||
typedef struct HUF_CElt_s HUF_CElt; /* incomplete type */
|
||||
size_t HUF_writeCTable(void *dst, size_t maxDstSize, const HUF_CElt *CTable, unsigned maxSymbolValue, unsigned huffLog);
|
||||
size_t HUF_writeCTable_wksp(void *dst, size_t maxDstSize, const HUF_CElt *CTable, unsigned maxSymbolValue, unsigned huffLog, void *workspace, size_t workspaceSize);
|
||||
size_t HUF_compress4X_usingCTable(void *dst, size_t dstSize, const void *src, size_t srcSize, const HUF_CElt *CTable);
|
||||
|
||||
typedef enum {
|
||||
@ -137,7 +143,7 @@ typedef enum {
|
||||
* If preferRepeat then the old table will always be used if valid. */
|
||||
size_t HUF_compress4X_repeat(void *dst, size_t dstSize, const void *src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void *workSpace,
|
||||
size_t wkspSize, HUF_CElt *hufTable, HUF_repeat *repeat,
|
||||
int preferRepeat); /**< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U32 unsigned */
|
||||
int preferRepeat); /**< `workSpace` must be a table of at least HUF_COMPRESS_WORKSPACE_SIZE_U32 unsigned */
|
||||
|
||||
/** HUF_buildCTable_wksp() :
|
||||
* Same as HUF_buildCTable(), but using externally allocated scratch buffer.
|
||||
@ -150,11 +156,12 @@ size_t HUF_buildCTable_wksp(HUF_CElt *tree, const U32 *count, U32 maxSymbolValue
|
||||
`huffWeight` is destination buffer.
|
||||
@return : size read from `src` , or an error Code .
|
||||
Note : Needed by HUF_readCTable() and HUF_readDTableXn() . */
|
||||
size_t HUF_readStats(BYTE *huffWeight, size_t hwSize, U32 *rankStats, U32 *nbSymbolsPtr, U32 *tableLogPtr, const void *src, size_t srcSize);
|
||||
size_t HUF_readStats_wksp(BYTE *huffWeight, size_t hwSize, U32 *rankStats, U32 *nbSymbolsPtr, U32 *tableLogPtr, const void *src, size_t srcSize,
|
||||
void *workspace, size_t workspaceSize);
|
||||
|
||||
/** HUF_readCTable() :
|
||||
* Loading a CTable saved with HUF_writeCTable() */
|
||||
size_t HUF_readCTable(HUF_CElt *CTable, unsigned maxSymbolValue, const void *src, size_t srcSize);
|
||||
size_t HUF_readCTable_wksp(HUF_CElt *CTable, unsigned maxSymbolValue, const void *src, size_t srcSize, void *workspace, size_t workspaceSize);
|
||||
|
||||
/*
|
||||
HUF_decompress() does the following:
|
||||
@ -170,8 +177,8 @@ HUF_decompress() does the following:
|
||||
* Assumption : 0 < cSrcSize < dstSize <= 128 KB */
|
||||
U32 HUF_selectDecoder(size_t dstSize, size_t cSrcSize);
|
||||
|
||||
size_t HUF_readDTableX2(HUF_DTable *DTable, const void *src, size_t srcSize);
|
||||
size_t HUF_readDTableX4(HUF_DTable *DTable, const void *src, size_t srcSize);
|
||||
size_t HUF_readDTableX2_wksp(HUF_DTable *DTable, const void *src, size_t srcSize, void *workspace, size_t workspaceSize);
|
||||
size_t HUF_readDTableX4_wksp(HUF_DTable *DTable, const void *src, size_t srcSize, void *workspace, size_t workspaceSize);
|
||||
|
||||
size_t HUF_decompress4X_usingDTable(void *dst, size_t maxDstSize, const void *cSrc, size_t cSrcSize, const HUF_DTable *DTable);
|
||||
size_t HUF_decompress4X2_usingDTable(void *dst, size_t maxDstSize, const void *cSrc, size_t cSrcSize, const HUF_DTable *DTable);
|
||||
@ -180,7 +187,7 @@ size_t HUF_decompress4X4_usingDTable(void *dst, size_t maxDstSize, const void *c
|
||||
/* single stream variants */
|
||||
|
||||
size_t HUF_compress1X_wksp(void *dst, size_t dstSize, const void *src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void *workSpace,
|
||||
size_t wkspSize); /**< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U32 unsigned */
|
||||
size_t wkspSize); /**< `workSpace` must be a table of at least HUF_COMPRESS_WORKSPACE_SIZE_U32 unsigned */
|
||||
size_t HUF_compress1X_usingCTable(void *dst, size_t dstSize, const void *src, size_t srcSize, const HUF_CElt *CTable);
|
||||
/** HUF_compress1X_repeat() :
|
||||
* Same as HUF_compress1X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none.
|
||||
@ -189,11 +196,13 @@ size_t HUF_compress1X_usingCTable(void *dst, size_t dstSize, const void *src, si
|
||||
* If preferRepeat then the old table will always be used if valid. */
|
||||
size_t HUF_compress1X_repeat(void *dst, size_t dstSize, const void *src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void *workSpace,
|
||||
size_t wkspSize, HUF_CElt *hufTable, HUF_repeat *repeat,
|
||||
int preferRepeat); /**< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U32 unsigned */
|
||||
int preferRepeat); /**< `workSpace` must be a table of at least HUF_COMPRESS_WORKSPACE_SIZE_U32 unsigned */
|
||||
|
||||
size_t HUF_decompress1X_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize);
|
||||
size_t HUF_decompress1X2_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize); /**< single-symbol decoder */
|
||||
size_t HUF_decompress1X4_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize); /**< double-symbols decoder */
|
||||
size_t HUF_decompress1X_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize);
|
||||
size_t HUF_decompress1X2_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace,
|
||||
size_t workspaceSize); /**< single-symbol decoder */
|
||||
size_t HUF_decompress1X4_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace,
|
||||
size_t workspaceSize); /**< double-symbols decoder */
|
||||
|
||||
size_t HUF_decompress1X_usingDTable(void *dst, size_t maxDstSize, const void *cSrc, size_t cSrcSize,
|
||||
const HUF_DTable *DTable); /**< automatic selection of sing or double symbol decoder, based on DTable */
|
||||
|
||||
@ -43,6 +43,7 @@
|
||||
#include "bitstream.h"
|
||||
#include "fse.h" /* header compression */
|
||||
#include "huf.h"
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/string.h> /* memcpy, memset */
|
||||
|
||||
/* **************************************************************
|
||||
@ -78,7 +79,7 @@ unsigned HUF_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxS
|
||||
* Note : all elements within weightTable are supposed to be <= HUF_TABLELOG_MAX.
|
||||
*/
|
||||
#define MAX_FSE_TABLELOG_FOR_HUFF_HEADER 6
|
||||
size_t HUF_compressWeights(void *dst, size_t dstSize, const void *weightTable, size_t wtSize)
|
||||
size_t HUF_compressWeights_wksp(void *dst, size_t dstSize, const void *weightTable, size_t wtSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
BYTE *const ostart = (BYTE *)dst;
|
||||
BYTE *op = ostart;
|
||||
@ -87,11 +88,24 @@ size_t HUF_compressWeights(void *dst, size_t dstSize, const void *weightTable, s
|
||||
U32 maxSymbolValue = HUF_TABLELOG_MAX;
|
||||
U32 tableLog = MAX_FSE_TABLELOG_FOR_HUFF_HEADER;
|
||||
|
||||
FSE_CTable CTable[FSE_CTABLE_SIZE_U32(MAX_FSE_TABLELOG_FOR_HUFF_HEADER, HUF_TABLELOG_MAX)];
|
||||
BYTE scratchBuffer[1 << MAX_FSE_TABLELOG_FOR_HUFF_HEADER];
|
||||
FSE_CTable *CTable;
|
||||
U32 *count;
|
||||
S16 *norm;
|
||||
size_t spaceUsed32 = 0;
|
||||
|
||||
U32 count[HUF_TABLELOG_MAX + 1];
|
||||
S16 norm[HUF_TABLELOG_MAX + 1];
|
||||
HUF_STATIC_ASSERT(sizeof(FSE_CTable) == sizeof(U32));
|
||||
|
||||
CTable = (FSE_CTable *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += FSE_CTABLE_SIZE_U32(MAX_FSE_TABLELOG_FOR_HUFF_HEADER, HUF_TABLELOG_MAX);
|
||||
count = (U32 *)workspace + spaceUsed32;
|
||||
spaceUsed32 += HUF_TABLELOG_MAX + 1;
|
||||
norm = (S16 *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(sizeof(S16) * (HUF_TABLELOG_MAX + 1), sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
|
||||
/* init conditions */
|
||||
if (wtSize <= 1)
|
||||
@ -116,7 +130,7 @@ size_t HUF_compressWeights(void *dst, size_t dstSize, const void *weightTable, s
|
||||
}
|
||||
|
||||
/* Compress */
|
||||
CHECK_F(FSE_buildCTable_wksp(CTable, norm, maxSymbolValue, tableLog, scratchBuffer, sizeof(scratchBuffer)));
|
||||
CHECK_F(FSE_buildCTable_wksp(CTable, norm, maxSymbolValue, tableLog, workspace, workspaceSize));
|
||||
{
|
||||
CHECK_V_F(cSize, FSE_compress_usingCTable(op, oend - op, weightTable, wtSize, CTable));
|
||||
if (cSize == 0)
|
||||
@ -132,16 +146,28 @@ struct HUF_CElt_s {
|
||||
BYTE nbBits;
|
||||
}; /* typedef'd to HUF_CElt within "huf.h" */
|
||||
|
||||
/*! HUF_writeCTable() :
|
||||
/*! HUF_writeCTable_wksp() :
|
||||
`CTable` : Huffman tree to save, using huf representation.
|
||||
@return : size of saved CTable */
|
||||
size_t HUF_writeCTable(void *dst, size_t maxDstSize, const HUF_CElt *CTable, U32 maxSymbolValue, U32 huffLog)
|
||||
size_t HUF_writeCTable_wksp(void *dst, size_t maxDstSize, const HUF_CElt *CTable, U32 maxSymbolValue, U32 huffLog, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
BYTE bitsToWeight[HUF_TABLELOG_MAX + 1]; /* precomputed conversion table */
|
||||
BYTE huffWeight[HUF_SYMBOLVALUE_MAX];
|
||||
BYTE *op = (BYTE *)dst;
|
||||
U32 n;
|
||||
|
||||
BYTE *bitsToWeight;
|
||||
BYTE *huffWeight;
|
||||
size_t spaceUsed32 = 0;
|
||||
|
||||
bitsToWeight = (BYTE *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(HUF_TABLELOG_MAX + 1, sizeof(U32)) >> 2;
|
||||
huffWeight = (BYTE *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(HUF_SYMBOLVALUE_MAX, sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
|
||||
/* check conditions */
|
||||
if (maxSymbolValue > HUF_SYMBOLVALUE_MAX)
|
||||
return ERROR(maxSymbolValue_tooLarge);
|
||||
@ -155,7 +181,7 @@ size_t HUF_writeCTable(void *dst, size_t maxDstSize, const HUF_CElt *CTable, U32
|
||||
|
||||
/* attempt weights compression by FSE */
|
||||
{
|
||||
CHECK_V_F(hSize, HUF_compressWeights(op + 1, maxDstSize - 1, huffWeight, maxSymbolValue));
|
||||
CHECK_V_F(hSize, HUF_compressWeights_wksp(op + 1, maxDstSize - 1, huffWeight, maxSymbolValue, workspace, workspaceSize));
|
||||
if ((hSize > 1) & (hSize < maxSymbolValue / 2)) { /* FSE compressed */
|
||||
op[0] = (BYTE)hSize;
|
||||
return hSize + 1;
|
||||
@ -174,15 +200,29 @@ size_t HUF_writeCTable(void *dst, size_t maxDstSize, const HUF_CElt *CTable, U32
|
||||
return ((maxSymbolValue + 1) / 2) + 1;
|
||||
}
|
||||
|
||||
size_t HUF_readCTable(HUF_CElt *CTable, U32 maxSymbolValue, const void *src, size_t srcSize)
|
||||
size_t HUF_readCTable_wksp(HUF_CElt *CTable, U32 maxSymbolValue, const void *src, size_t srcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
BYTE huffWeight[HUF_SYMBOLVALUE_MAX + 1]; /* init not required, even though some static analyzer may complain */
|
||||
U32 rankVal[HUF_TABLELOG_ABSOLUTEMAX + 1]; /* large enough for values from 0 to 16 */
|
||||
U32 *rankVal;
|
||||
BYTE *huffWeight;
|
||||
U32 tableLog = 0;
|
||||
U32 nbSymbols = 0;
|
||||
size_t readSize;
|
||||
size_t spaceUsed32 = 0;
|
||||
|
||||
rankVal = (U32 *)workspace + spaceUsed32;
|
||||
spaceUsed32 += HUF_TABLELOG_ABSOLUTEMAX + 1;
|
||||
huffWeight = (BYTE *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(HUF_SYMBOLVALUE_MAX + 1, sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
|
||||
/* get symbol weights */
|
||||
CHECK_V_F(readSize, HUF_readStats(huffWeight, HUF_SYMBOLVALUE_MAX + 1, rankVal, &nbSymbols, &tableLog, src, srcSize));
|
||||
readSize = HUF_readStats_wksp(huffWeight, HUF_SYMBOLVALUE_MAX + 1, rankVal, &nbSymbols, &tableLog, src, srcSize, workspace, workspaceSize);
|
||||
if (ERR_isError(readSize))
|
||||
return readSize;
|
||||
|
||||
/* check result */
|
||||
if (tableLog > HUF_TABLELOG_MAX)
|
||||
@ -680,7 +720,7 @@ static size_t HUF_compress_internal(void *dst, size_t dstSize, const void *src,
|
||||
|
||||
/* Write table description header */
|
||||
{
|
||||
CHECK_V_F(hSize, HUF_writeCTable(op, dstSize, CTable, maxSymbolValue, huffLog));
|
||||
CHECK_V_F(hSize, HUF_writeCTable_wksp(op, dstSize, CTable, maxSymbolValue, huffLog, workSpace, wkspSize));
|
||||
/* Check if using the previous table will be beneficial */
|
||||
if (repeat && *repeat != HUF_repeat_none) {
|
||||
size_t const oldSize = HUF_estimateCompressedSize(oldHufTable, count, maxSymbolValue);
|
||||
|
||||
@ -49,6 +49,7 @@
|
||||
#include "fse.h" /* header compression */
|
||||
#include "huf.h"
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/string.h> /* memcpy, memset */
|
||||
|
||||
/* **************************************************************
|
||||
@ -86,20 +87,32 @@ typedef struct {
|
||||
BYTE nbBits;
|
||||
} HUF_DEltX2; /* single-symbol decoding */
|
||||
|
||||
size_t HUF_readDTableX2(HUF_DTable *DTable, const void *src, size_t srcSize)
|
||||
size_t HUF_readDTableX2_wksp(HUF_DTable *DTable, const void *src, size_t srcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
BYTE huffWeight[HUF_SYMBOLVALUE_MAX + 1];
|
||||
U32 rankVal[HUF_TABLELOG_ABSOLUTEMAX + 1]; /* large enough for values from 0 to 16 */
|
||||
U32 tableLog = 0;
|
||||
U32 nbSymbols = 0;
|
||||
size_t iSize;
|
||||
void *const dtPtr = DTable + 1;
|
||||
HUF_DEltX2 *const dt = (HUF_DEltX2 *)dtPtr;
|
||||
|
||||
U32 *rankVal;
|
||||
BYTE *huffWeight;
|
||||
size_t spaceUsed32 = 0;
|
||||
|
||||
rankVal = (U32 *)workspace + spaceUsed32;
|
||||
spaceUsed32 += HUF_TABLELOG_ABSOLUTEMAX + 1;
|
||||
huffWeight = (BYTE *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(HUF_SYMBOLVALUE_MAX + 1, sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
|
||||
HUF_STATIC_ASSERT(sizeof(DTableDesc) == sizeof(HUF_DTable));
|
||||
/* memset(huffWeight, 0, sizeof(huffWeight)); */ /* is not necessary, even though some analyzer complain ... */
|
||||
|
||||
iSize = HUF_readStats(huffWeight, HUF_SYMBOLVALUE_MAX + 1, rankVal, &nbSymbols, &tableLog, src, srcSize);
|
||||
iSize = HUF_readStats_wksp(huffWeight, HUF_SYMBOLVALUE_MAX + 1, rankVal, &nbSymbols, &tableLog, src, srcSize, workspace, workspaceSize);
|
||||
if (HUF_isError(iSize))
|
||||
return iSize;
|
||||
|
||||
@ -216,11 +229,11 @@ size_t HUF_decompress1X2_usingDTable(void *dst, size_t dstSize, const void *cSrc
|
||||
return HUF_decompress1X2_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
|
||||
}
|
||||
|
||||
size_t HUF_decompress1X2_DCtx(HUF_DTable *DCtx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize)
|
||||
size_t HUF_decompress1X2_DCtx_wksp(HUF_DTable *DCtx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
const BYTE *ip = (const BYTE *)cSrc;
|
||||
|
||||
size_t const hSize = HUF_readDTableX2(DCtx, cSrc, cSrcSize);
|
||||
size_t const hSize = HUF_readDTableX2_wksp(DCtx, cSrc, cSrcSize, workspace, workspaceSize);
|
||||
if (HUF_isError(hSize))
|
||||
return hSize;
|
||||
if (hSize >= cSrcSize)
|
||||
@ -347,11 +360,11 @@ size_t HUF_decompress4X2_usingDTable(void *dst, size_t dstSize, const void *cSrc
|
||||
return HUF_decompress4X2_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
|
||||
}
|
||||
|
||||
size_t HUF_decompress4X2_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize)
|
||||
size_t HUF_decompress4X2_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
const BYTE *ip = (const BYTE *)cSrc;
|
||||
|
||||
size_t const hSize = HUF_readDTableX2(dctx, cSrc, cSrcSize);
|
||||
size_t const hSize = HUF_readDTableX2_wksp(dctx, cSrc, cSrcSize, workspace, workspaceSize);
|
||||
if (HUF_isError(hSize))
|
||||
return hSize;
|
||||
if (hSize >= cSrcSize)
|
||||
@ -422,6 +435,7 @@ static void HUF_fillDTableX4Level2(HUF_DEltX4 *DTable, U32 sizeLog, const U32 co
|
||||
}
|
||||
|
||||
typedef U32 rankVal_t[HUF_TABLELOG_MAX][HUF_TABLELOG_MAX + 1];
|
||||
typedef U32 rankValCol_t[HUF_TABLELOG_MAX + 1];
|
||||
|
||||
static void HUF_fillDTableX4(HUF_DEltX4 *DTable, const U32 targetLog, const sortedSymbol_t *sortedList, const U32 sortedListSize, const U32 *rankStart,
|
||||
rankVal_t rankValOrigin, const U32 maxWeight, const U32 nbBitsBaseline)
|
||||
@ -465,27 +479,50 @@ static void HUF_fillDTableX4(HUF_DEltX4 *DTable, const U32 targetLog, const sort
|
||||
}
|
||||
}
|
||||
|
||||
size_t HUF_readDTableX4(HUF_DTable *DTable, const void *src, size_t srcSize)
|
||||
size_t HUF_readDTableX4_wksp(HUF_DTable *DTable, const void *src, size_t srcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
BYTE weightList[HUF_SYMBOLVALUE_MAX + 1];
|
||||
sortedSymbol_t sortedSymbol[HUF_SYMBOLVALUE_MAX + 1];
|
||||
U32 rankStats[HUF_TABLELOG_MAX + 1] = {0};
|
||||
U32 rankStart0[HUF_TABLELOG_MAX + 2] = {0};
|
||||
U32 *const rankStart = rankStart0 + 1;
|
||||
rankVal_t rankVal;
|
||||
U32 tableLog, maxW, sizeOfSort, nbSymbols;
|
||||
DTableDesc dtd = HUF_getDTableDesc(DTable);
|
||||
U32 const maxTableLog = dtd.maxTableLog;
|
||||
size_t iSize;
|
||||
void *dtPtr = DTable + 1; /* force compiler to avoid strict-aliasing */
|
||||
HUF_DEltX4 *const dt = (HUF_DEltX4 *)dtPtr;
|
||||
U32 *rankStart;
|
||||
|
||||
rankValCol_t *rankVal;
|
||||
U32 *rankStats;
|
||||
U32 *rankStart0;
|
||||
sortedSymbol_t *sortedSymbol;
|
||||
BYTE *weightList;
|
||||
size_t spaceUsed32 = 0;
|
||||
|
||||
HUF_STATIC_ASSERT((sizeof(rankValCol_t) & 3) == 0);
|
||||
|
||||
rankVal = (rankValCol_t *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += (sizeof(rankValCol_t) * HUF_TABLELOG_MAX) >> 2;
|
||||
rankStats = (U32 *)workspace + spaceUsed32;
|
||||
spaceUsed32 += HUF_TABLELOG_MAX + 1;
|
||||
rankStart0 = (U32 *)workspace + spaceUsed32;
|
||||
spaceUsed32 += HUF_TABLELOG_MAX + 2;
|
||||
sortedSymbol = (sortedSymbol_t *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(sizeof(sortedSymbol_t) * (HUF_SYMBOLVALUE_MAX + 1), sizeof(U32)) >> 2;
|
||||
weightList = (BYTE *)((U32 *)workspace + spaceUsed32);
|
||||
spaceUsed32 += ALIGN(HUF_SYMBOLVALUE_MAX + 1, sizeof(U32)) >> 2;
|
||||
|
||||
if ((spaceUsed32 << 2) > workspaceSize)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
workspace = (U32 *)workspace + spaceUsed32;
|
||||
workspaceSize -= (spaceUsed32 << 2);
|
||||
|
||||
rankStart = rankStart0 + 1;
|
||||
memset(rankStats, 0, sizeof(U32) * (2 * HUF_TABLELOG_MAX + 2 + 1));
|
||||
|
||||
HUF_STATIC_ASSERT(sizeof(HUF_DEltX4) == sizeof(HUF_DTable)); /* if compiler fails here, assertion is wrong */
|
||||
if (maxTableLog > HUF_TABLELOG_MAX)
|
||||
return ERROR(tableLog_tooLarge);
|
||||
/* memset(weightList, 0, sizeof(weightList)); */ /* is not necessary, even though some analyzer complain ... */
|
||||
|
||||
iSize = HUF_readStats(weightList, HUF_SYMBOLVALUE_MAX + 1, rankStats, &nbSymbols, &tableLog, src, srcSize);
|
||||
iSize = HUF_readStats_wksp(weightList, HUF_SYMBOLVALUE_MAX + 1, rankStats, &nbSymbols, &tableLog, src, srcSize, workspace, workspaceSize);
|
||||
if (HUF_isError(iSize))
|
||||
return iSize;
|
||||
|
||||
@ -652,11 +689,11 @@ size_t HUF_decompress1X4_usingDTable(void *dst, size_t dstSize, const void *cSrc
|
||||
return HUF_decompress1X4_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
|
||||
}
|
||||
|
||||
size_t HUF_decompress1X4_DCtx(HUF_DTable *DCtx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize)
|
||||
size_t HUF_decompress1X4_DCtx_wksp(HUF_DTable *DCtx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
const BYTE *ip = (const BYTE *)cSrc;
|
||||
|
||||
size_t const hSize = HUF_readDTableX4(DCtx, cSrc, cSrcSize);
|
||||
size_t const hSize = HUF_readDTableX4_wksp(DCtx, cSrc, cSrcSize, workspace, workspaceSize);
|
||||
if (HUF_isError(hSize))
|
||||
return hSize;
|
||||
if (hSize >= cSrcSize)
|
||||
@ -785,11 +822,11 @@ size_t HUF_decompress4X4_usingDTable(void *dst, size_t dstSize, const void *cSrc
|
||||
return HUF_decompress4X4_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable);
|
||||
}
|
||||
|
||||
size_t HUF_decompress4X4_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize)
|
||||
size_t HUF_decompress4X4_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
const BYTE *ip = (const BYTE *)cSrc;
|
||||
|
||||
size_t hSize = HUF_readDTableX4(dctx, cSrc, cSrcSize);
|
||||
size_t hSize = HUF_readDTableX4_wksp(dctx, cSrc, cSrcSize, workspace, workspaceSize);
|
||||
if (HUF_isError(hSize))
|
||||
return hSize;
|
||||
if (hSize >= cSrcSize)
|
||||
@ -861,7 +898,7 @@ U32 HUF_selectDecoder(size_t dstSize, size_t cSrcSize)
|
||||
|
||||
typedef size_t (*decompressionAlgo)(void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize);
|
||||
|
||||
size_t HUF_decompress4X_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize)
|
||||
size_t HUF_decompress4X_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
/* validation checks */
|
||||
if (dstSize == 0)
|
||||
@ -879,11 +916,12 @@ size_t HUF_decompress4X_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const
|
||||
|
||||
{
|
||||
U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize);
|
||||
return algoNb ? HUF_decompress4X4_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) : HUF_decompress4X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize);
|
||||
return algoNb ? HUF_decompress4X4_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workspace, workspaceSize)
|
||||
: HUF_decompress4X2_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workspace, workspaceSize);
|
||||
}
|
||||
}
|
||||
|
||||
size_t HUF_decompress4X_hufOnly(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize)
|
||||
size_t HUF_decompress4X_hufOnly_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
/* validation checks */
|
||||
if (dstSize == 0)
|
||||
@ -893,11 +931,12 @@ size_t HUF_decompress4X_hufOnly(HUF_DTable *dctx, void *dst, size_t dstSize, con
|
||||
|
||||
{
|
||||
U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize);
|
||||
return algoNb ? HUF_decompress4X4_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) : HUF_decompress4X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize);
|
||||
return algoNb ? HUF_decompress4X4_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workspace, workspaceSize)
|
||||
: HUF_decompress4X2_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workspace, workspaceSize);
|
||||
}
|
||||
}
|
||||
|
||||
size_t HUF_decompress1X_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize)
|
||||
size_t HUF_decompress1X_DCtx_wksp(HUF_DTable *dctx, void *dst, size_t dstSize, const void *cSrc, size_t cSrcSize, void *workspace, size_t workspaceSize)
|
||||
{
|
||||
/* validation checks */
|
||||
if (dstSize == 0)
|
||||
@ -915,6 +954,7 @@ size_t HUF_decompress1X_DCtx(HUF_DTable *dctx, void *dst, size_t dstSize, const
|
||||
|
||||
{
|
||||
U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize);
|
||||
return algoNb ? HUF_decompress1X4_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) : HUF_decompress1X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize);
|
||||
return algoNb ? HUF_decompress1X4_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workspace, workspaceSize)
|
||||
: HUF_decompress1X2_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workspace, workspaceSize);
|
||||
}
|
||||
}
|
||||
|
||||
@ -51,7 +51,7 @@ ZSTD_customMem ZSTD_initStack(void *workspace, size_t workspaceSize)
|
||||
void *ZSTD_stackAllocAll(void *opaque, size_t *size)
|
||||
{
|
||||
ZSTD_stack *stack = (ZSTD_stack *)opaque;
|
||||
*size = stack->end - ZSTD_PTR_ALIGN(stack->ptr);
|
||||
*size = (BYTE const *)stack->end - (BYTE *)ZSTD_PTR_ALIGN(stack->ptr);
|
||||
return stack_push(stack, *size);
|
||||
}
|
||||
|
||||
|
||||
@ -5,21 +5,21 @@ SOURCES := $(wildcard ../lib/zstd/*.c)
|
||||
OBJECTS := $(patsubst %.c,%.o,$(SOURCES))
|
||||
|
||||
ARFLAGS := rcs
|
||||
CXXFLAGS += -std=c++11
|
||||
CFLAGS += -g -O0
|
||||
CXXFLAGS += -std=c++11 -g -O3 -Wcast-align
|
||||
CFLAGS += -g -O3 -Wframe-larger-than=400 -Wcast-align
|
||||
CPPFLAGS += $(IFLAGS)
|
||||
|
||||
../lib/zstd/libzstd.a: $(OBJECTS)
|
||||
$(AR) $(ARFLAGS) $@ $^
|
||||
|
||||
DecompressCrash: DecompressCrash.o $(OBJECTS) libFuzzer.a
|
||||
$(CXX) $(TEST_CPPFLAGS) $(TEST_CXXFLAGS) $(LDFLAGS) $^ -o $@
|
||||
$(CXX) $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS) $^ -o $@
|
||||
|
||||
RoundTripCrash: RoundTripCrash.o $(OBJECTS) ../lib/xxhash.o libFuzzer.a
|
||||
$(CXX) $(TEST_CPPFLAGS) $(TEST_CXXFLAGS) $(LDFLAGS) $^ -o $@
|
||||
$(CXX) $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS) $^ -o $@
|
||||
|
||||
UserlandTest: UserlandTest.cpp ../lib/zstd/libzstd.a ../lib/xxhash.o
|
||||
$(CXX) $(CXXFLAGS) $(CFLAGS) $(CPPFLAGS) $^ googletest/build/googlemock/gtest/libgtest.a googletest/build/googlemock/gtest/libgtest_main.a -o $@
|
||||
$(CXX) $(CXXFLAGS) $(CPPFLAGS) $^ googletest/build/googlemock/gtest/libgtest.a googletest/build/googlemock/gtest/libgtest_main.a -o $@
|
||||
|
||||
XXHashUserlandTest: XXHashUserlandTest.cpp ../lib/xxhash.o ../../../lib/common/xxhash.o
|
||||
$(CXX) $(CXXFLAGS) $(CFLAGS) $(CPPFLAGS) $^ googletest/build/googlemock/gtest/libgtest.a googletest/build/googlemock/gtest/libgtest_main.a -o $@
|
||||
@ -39,5 +39,5 @@ googletest:
|
||||
@cd googletest/build && cmake .. && $(MAKE)
|
||||
|
||||
clean:
|
||||
$(RM) -f *.{o,a} ../lib/zstd/*.{o,a}
|
||||
$(RM) -f *.{o,a} ../lib/zstd/*.{o,a} ../lib/*.o
|
||||
$(RM) -f DecompressCrash RoundTripCrash UserlandTest XXHashUserlandTest
|
||||
|
||||
11
contrib/linux-kernel/test/include/linux/math64.h
Normal file
11
contrib/linux-kernel/test/include/linux/math64.h
Normal file
@ -0,0 +1,11 @@
|
||||
#ifndef LINUX_MATH64_H
|
||||
#define LINUX_MATH64_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
static uint64_t div_u64(uint64_t n, uint32_t d)
|
||||
{
|
||||
return n / d;
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user