| /* |
| * Copyright 2019 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrCpuBuffer_DEFINED |
| #define GrCpuBuffer_DEFINED |
| |
| #include "src/base/SkSafeMath.h" |
| #include "src/gpu/ganesh/GrBuffer.h" |
| #include "src/gpu/ganesh/GrNonAtomicRef.h" |
| |
| class GrCpuBuffer final : public GrNonAtomicRef<GrCpuBuffer>, public GrBuffer { |
| public: |
| static sk_sp<GrCpuBuffer> Make(size_t size) { |
| SkASSERT(size > 0); |
| SkSafeMath sm; |
| size_t combinedSize = sm.add(sizeof(GrCpuBuffer), size); |
| if (!sm.ok()) { |
| SK_ABORT("Buffer size is too big."); |
| } |
| auto mem = ::operator new(combinedSize); |
| return sk_sp<GrCpuBuffer>(new (mem) GrCpuBuffer((char*)mem + sizeof(GrCpuBuffer), size)); |
| } |
| |
| // TODO(b/30449950): use sized delete once P0722R3 is available |
| static void operator delete(void* p) { ::operator delete(p); } |
| |
| void ref() const override { GrNonAtomicRef<GrCpuBuffer>::ref(); } |
| void unref() const override { GrNonAtomicRef<GrCpuBuffer>::unref(); } |
| size_t size() const override { return fSize; } |
| bool isCpuBuffer() const override { return true; } |
| |
| char* data() { return reinterpret_cast<char*>(fData); } |
| const char* data() const { return reinterpret_cast<const char*>(fData); } |
| |
| private: |
| GrCpuBuffer(void* data, size_t size) : fData(data), fSize(size) {} |
| void* fData; |
| size_t fSize; |
| }; |
| |
| #endif |