skia2/tests/CachedDataTest.cpp
Ben Wagner b607a8fbf0 IWYU for some test files starting with 'C'.
Change-Id: Iea274ae52da8b4b87ec55222c856f40a0d88c4e0
Reviewed-on: https://skia-review.googlesource.com/113746
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-on: https://skia-review.googlesource.com/113944
Reviewed-by: Ben Wagner <bungeman@google.com>
2018-03-13 15:16:22 +00:00

102 lines
3.2 KiB
C++

/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkCachedData.h"
#include "SkDiscardableMemoryPool.h"
#include "SkMalloc.h"
#include "SkRefCnt.h"
#include "SkTypes.h"
#include "Test.h"
#include <cstring>
class SkDiscardableMemory;
enum LockedState {
kUnlocked,
kLocked,
};
enum CachedState {
kNotInCache,
kInCache,
};
static void check_data(skiatest::Reporter* reporter, SkCachedData* data,
int refcnt, CachedState cacheState, LockedState lockedState) {
REPORTER_ASSERT(reporter, data->testing_only_getRefCnt() == refcnt);
REPORTER_ASSERT(reporter, data->testing_only_isInCache() == (kInCache == cacheState));
REPORTER_ASSERT(reporter, data->testing_only_isLocked() == (lockedState == kLocked));
}
static SkCachedData* make_data(size_t size, SkDiscardableMemoryPool* pool) {
if (pool) {
SkDiscardableMemory* dm = pool->create(size);
// the pool "can" return null, but it shouldn't in these controlled conditions
SkASSERT_RELEASE(dm);
return new SkCachedData(size, dm);
} else {
return new SkCachedData(sk_malloc_throw(size), size);
}
}
// returns with the data locked by client and cache
static SkCachedData* test_locking(skiatest::Reporter* reporter,
size_t size, SkDiscardableMemoryPool* pool) {
SkCachedData* data = make_data(size, pool);
memset(data->writable_data(), 0x80, size); // just to use writable_data()
check_data(reporter, data, 1, kNotInCache, kLocked);
data->ref();
check_data(reporter, data, 2, kNotInCache, kLocked);
data->unref();
check_data(reporter, data, 1, kNotInCache, kLocked);
data->attachToCacheAndRef();
check_data(reporter, data, 2, kInCache, kLocked);
data->unref();
check_data(reporter, data, 1, kInCache, kUnlocked);
data->ref();
check_data(reporter, data, 2, kInCache, kLocked);
return data;
}
/*
* SkCachedData behaves differently (regarding its locked/unlocked state) depending on
* when it is in the cache or not. Being in the cache is signaled by calling attachToCacheAndRef()
* instead of ref(). (and balanced by detachFromCacheAndUnref).
*
* Thus, among other things, we test the end-of-life behavior when the client is the last owner
* and when the cache is.
*/
DEF_TEST(CachedData, reporter) {
sk_sp<SkDiscardableMemoryPool> pool(SkDiscardableMemoryPool::Make(1000));
for (int useDiscardable = 0; useDiscardable <= 1; ++useDiscardable) {
const size_t size = 100;
// test with client as last owner
SkCachedData* data = test_locking(reporter, size, useDiscardable ? pool.get() : nullptr);
check_data(reporter, data, 2, kInCache, kLocked);
data->detachFromCacheAndUnref();
check_data(reporter, data, 1, kNotInCache, kLocked);
data->unref();
// test with cache as last owner
data = test_locking(reporter, size, useDiscardable ? pool.get() : nullptr);
check_data(reporter, data, 2, kInCache, kLocked);
data->unref();
check_data(reporter, data, 1, kInCache, kUnlocked);
data->detachFromCacheAndUnref();
}
}