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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_BASE_LSAN_PAGE_ALLOCATOR_H_
#define V8_BASE_LSAN_PAGE_ALLOCATOR_H_
#include "include/v8-platform.h"
#include "src/base/base-export.h"
#include "src/base/compiler-specific.h"
namespace v8 {
namespace base {
// This is a v8::PageAllocator implementation that decorates provided page
// allocator object with leak sanitizer notifications when LEAK_SANITIZER
// is defined.
class V8_BASE_EXPORT LsanPageAllocator
: public NON_EXPORTED_BASE(::v8::PageAllocator) {
public:
LsanPageAllocator(v8::PageAllocator* page_allocator);
~LsanPageAllocator() override = default;
size_t AllocatePageSize() override { return allocate_page_size_; }
size_t CommitPageSize() override { return commit_page_size_; }
void SetRandomMmapSeed(int64_t seed) override {
return page_allocator_->SetRandomMmapSeed(seed);
}
void* GetRandomMmapAddr() override {
return page_allocator_->GetRandomMmapAddr();
}
void* AllocatePages(void* address, size_t size, size_t alignment,
PageAllocator::Permission access) override;
bool FreePages(void* address, size_t size) override;
bool ReleasePages(void* address, size_t size, size_t new_size) override;
bool SetPermissions(void* address, size_t size,
PageAllocator::Permission access) override {
return page_allocator_->SetPermissions(address, size, access);
}
private:
v8::PageAllocator* const page_allocator_;
const size_t allocate_page_size_;
const size_t commit_page_size_;
};
} // namespace base
} // namespace v8
#endif // V8_BASE_LSAN_PAGE_ALLOCATOR_H_
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