diff options
Diffstat (limited to 'src/core')
-rw-r--r-- | src/core/SkStream.cpp | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/src/core/SkStream.cpp b/src/core/SkStream.cpp index 1435dab235..133df83078 100644 --- a/src/core/SkStream.cpp +++ b/src/core/SkStream.cpp @@ -570,15 +570,31 @@ void SkDynamicMemoryWStream::padToAlign4() { } } + +void SkDynamicMemoryWStream::copyToAndReset(void* ptr) { + // By looping through the source and freeing as we copy, we + // can reduce real memory use with large streams. + char* dst = reinterpret_cast<char*>(ptr); + Block* block = fHead; + while (block != nullptr) { + size_t len = block->written(); + memcpy(dst, block->start(), len); + dst += len; + Block* next = block->fNext; + sk_free(block); + block = next; + } + fHead = fTail = nullptr; + fBytesWrittenBeforeTail = 0; +} + sk_sp<SkData> SkDynamicMemoryWStream::detachAsData() { const size_t size = this->bytesWritten(); if (0 == size) { return SkData::MakeEmpty(); } - sk_sp<SkData> data = SkData::MakeUninitialized(size); - this->copyTo(data->writable_data()); - this->reset(); // this is the "detach" part + this->copyToAndReset(data->writable_data()); return data; } |