chromium/base/allocator/partition_allocator/src/partition_alloc/oom.cc

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "partition_alloc/oom.h"

#include "partition_alloc/build_config.h"
#include "partition_alloc/oom_callback.h"
#include "partition_alloc/partition_alloc_base/compiler_specific.h"
#include "partition_alloc/partition_alloc_base/debug/alias.h"
#include "partition_alloc/partition_alloc_base/immediate_crash.h"

#if PA_BUILDFLAG(IS_WIN)
#include <windows.h>

#include <array>
#include <cstdlib>
#endif  // PA_BUILDFLAG(IS_WIN)

namespace partition_alloc {

size_t g_oom_size = …;

namespace internal {

// Crash server classifies base::internal::OnNoMemoryInternal as OOM.
// TODO(crbug.com/40158212): Update to
// partition_alloc::internal::base::internal::OnNoMemoryInternal
PA_NOINLINE void OnNoMemoryInternal(size_t size) { … }

}  // namespace internal

void TerminateBecauseOutOfMemory(size_t size) { … }

namespace internal {

// The crash is generated in a PA_NOINLINE function so that we can classify the
// crash as an OOM solely by analyzing the stack trace. It is tagged as
// PA_NOT_TAIL_CALLED to ensure that its parent function stays on the stack.
[[noreturn]] PA_NOINLINE PA_NOT_TAIL_CALLED void OnNoMemory(size_t size) { … }

}  // namespace internal

}  // namespace partition_alloc