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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.
#include "src/sanitizer/lsan-page-allocator.h"
#include "include/v8-platform.h"
#include "src/base/logging.h"
#if defined(LEAK_SANITIZER)
#include <sanitizer/lsan_interface.h>
#endif
namespace v8 {
namespace base {
LsanPageAllocator::LsanPageAllocator(v8::PageAllocator* page_allocator)
: page_allocator_(page_allocator),
allocate_page_size_(page_allocator_->AllocatePageSize()),
commit_page_size_(page_allocator_->CommitPageSize()) {
DCHECK_NOT_NULL(page_allocator);
}
void* LsanPageAllocator::AllocatePages(void* hint, size_t size,
size_t alignment,
PageAllocator::Permission access) {
void* result = page_allocator_->AllocatePages(hint, size, alignment, access);
#if defined(LEAK_SANITIZER)
if (result != nullptr) {
__lsan_register_root_region(result, size);
}
#endif
return result;
}
std::unique_ptr<v8::PageAllocator::SharedMemory>
LsanPageAllocator::AllocateSharedPages(size_t size,
const void* original_address) {
auto result = page_allocator_->AllocateSharedPages(size, original_address);
#if defined(LEAK_SANITIZER)
if (result != nullptr) {
__lsan_register_root_region(result->GetMemory(), size);
}
#endif
return result;
}
bool LsanPageAllocator::CanAllocateSharedPages() {
return page_allocator_->CanAllocateSharedPages();
}
bool LsanPageAllocator::FreePages(void* address, size_t size) {
bool result = page_allocator_->FreePages(address, size);
#if defined(LEAK_SANITIZER)
if (result) {
__lsan_unregister_root_region(address, size);
}
#endif
return result;
}
bool LsanPageAllocator::ReleasePages(void* address, size_t size,
size_t new_size) {
bool result = page_allocator_->ReleasePages(address, size, new_size);
#if defined(LEAK_SANITIZER)
if (result) {
__lsan_unregister_root_region(address, size);
__lsan_register_root_region(address, new_size);
}
#endif
return result;
}
} // namespace base
} // namespace v8
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