AuroraMiddleware/zstd
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better make -j all behavior

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avoid concurrent compilation of libzstd
This commit is contained in:
Yann Collet 2018-06-06 12:47:16 -07:00
parent 79e83d1c16
commit 830fd4468f
2 changed files with 11 additions and 21 deletions
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24
Makefile
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@ -27,7 +27,7 @@ endif
default: lib-release zstd-release
.PHONY: all
all: | allmost examples manual contrib
all: allmost examples manual contrib
.PHONY: allmost
allmost: allzstd
@ -35,8 +35,7 @@ allmost: allzstd
#skip zwrapper, can't build that on alternate architectures without the proper zlib installed
.PHONY: allzstd
allzstd:
$(MAKE) -C $(ZSTDDIR) all
allzstd: lib
$(MAKE) -C $(PRGDIR) all
$(MAKE) -C $(TESTDIR) all
@ -45,24 +44,15 @@ all32:
$(MAKE) -C $(PRGDIR) zstd32
$(MAKE) -C $(TESTDIR) all32
.PHONY: lib
lib:
.PHONY: lib lib-release
lib lib-release:
@$(MAKE) -C $(ZSTDDIR) $@
.PHONY: lib-release
lib-release:
@$(MAKE) -C $(ZSTDDIR)
.PHONY: zstd
zstd:
.PHONY: zstd zstd-release
zstd zstd-release:
@$(MAKE) -C $(PRGDIR) $@
cp $(PRGDIR)/zstd$(EXT) .
.PHONY: zstd-release
zstd-release:
@$(MAKE) -C $(PRGDIR)
cp $(PRGDIR)/zstd$(EXT) .
.PHONY: zstdmt
zstdmt:
@$(MAKE) -C $(PRGDIR) $@
@ -85,7 +75,7 @@ shortest:
check: shortest
.PHONY: examples
examples:
examples: lib
CPPFLAGS=-I../lib LDFLAGS=-L../lib $(MAKE) -C examples/ all
.PHONY: manual

8
doc/zstd_manual.html
View File

@ -82,7 +82,7 @@ unsigned long long ZSTD_getFrameContentSize(const void *src, size_t srcSize);
</b><p> `src` should point to the start of a ZSTD encoded frame.
`srcSize` must be at least as large as the frame header.
hint : any size >= `ZSTD_frameHeaderSize_max` is large enough.
@return : - decompressed size of the frame in `src`, if known
@return : - decompressed size of `src` frame content, if known
- ZSTD_CONTENTSIZE_UNKNOWN if the size cannot be determined
- ZSTD_CONTENTSIZE_ERROR if an error occurred (e.g. invalid magic number, srcSize too small)
note 1 : a 0 return value means the frame is valid but "empty".
@ -92,7 +92,8 @@ unsigned long long ZSTD_getFrameContentSize(const void *src, size_t srcSize);
Optionally, application can rely on some implicit limit,
as ZSTD_decompress() only needs an upper bound of decompressed size.
(For example, data could be necessarily cut into blocks <= 16 KB).
note 3 : decompressed size is always present when compression is done with ZSTD_compress()
note 3 : decompressed size is always present when compression is completed using single-pass functions,
such as ZSTD_compress(), ZSTD_compressCCtx() ZSTD_compress_usingDict() or ZSTD_compress_usingCDict().
note 4 : decompressed size can be very large (64-bits value),
potentially larger than what local system can handle as a single memory segment.
In which case, it's necessary to use streaming mode to decompress data.
@ -107,8 +108,7 @@ unsigned long long ZSTD_getFrameContentSize(const void *src, size_t srcSize);
Both functions work the same way, but ZSTD_getDecompressedSize() blends
"empty", "unknown" and "error" results to the same return value (0),
while ZSTD_getFrameContentSize() gives them separate return values.
`src` is the start of a zstd compressed frame.
@return : content size to be decompressed, as a 64-bits value _if known and not empty_, 0 otherwise.
@return : decompressed size of `src` frame content _if known and not empty_, 0 otherwise.
</p></pre><BR>
<h3>Helper functions</h3><pre></pre><b><pre>#define ZSTD_COMPRESSBOUND(srcSize) ((srcSize) + ((srcSize)>>8) + (((srcSize) < (128<<10)) ? (((128<<10) - (srcSize)) >> 11) </b>/* margin, from 64 to 0 */ : 0)) /* this formula ensures that bound(A) + bound(B) <= bound(A+B) as long as A and B >= 128 KB */<b>