1 files changed, 75 insertions, 0 deletions
diff --git a/chromium/v8/src/base/sanitizer/lsan-page-allocator.cc b/chromium/v8/src/base/sanitizer/lsan-page-allocator.cc
new file mode 100644
index 00000000000..bb52eb368fd
--- /dev/null
+++ b/chromium/v8/src/base/sanitizer/lsan-page-allocator.cc
@@ -0,0 +1,75 @@
+// 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/base/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