95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/process/memory.h"
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#if defined(OS_WIN)
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#include <windows.h>
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#endif // defined(OS_WIN)
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#include "base/debug/alias.h"
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#include "base/logging.h"
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#include "base/partition_alloc_buildflags.h"
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#if BUILDFLAG(USE_PARTITION_ALLOC)
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#include "base/allocator/partition_allocator/page_allocator.h"
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#endif
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#include "build/build_config.h"
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namespace base {
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namespace internal {
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NOINLINE void OnNoMemoryInternal(size_t size) {
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#if defined(OS_WIN)
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// Kill the process. This is important for security since most of code
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// does not check the result of memory allocation.
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// https://msdn.microsoft.com/en-us/library/het71c37.aspx
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// Pass the size of the failed request in an exception argument.
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ULONG_PTR exception_args[] = {size};
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::RaiseException(base::win::kOomExceptionCode, EXCEPTION_NONCONTINUABLE,
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base::size(exception_args), exception_args);
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// Safety check, make sure process exits here.
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_exit(win::kOomExceptionCode);
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#else
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size_t tmp_size = size;
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base::debug::Alias(&tmp_size);
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LOG(FATAL) << "Out of memory. size=" << tmp_size;
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#endif // defined(OS_WIN)
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}
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} // namespace internal
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// Defined in memory_win.cc for Windows.
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#if !defined(OS_WIN)
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namespace {
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// Breakpad server classifies base::`anonymous namespace'::OnNoMemory as
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// out-of-memory crash.
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NOINLINE void OnNoMemory(size_t size) {
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internal::OnNoMemoryInternal(size);
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}
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} // namespace
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void TerminateBecauseOutOfMemory(size_t size) {
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OnNoMemory(size);
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}
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#endif // !defined(OS_WIN)
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// Defined in memory_mac.mm for Mac.
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#if !defined(OS_MACOSX)
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bool UncheckedCalloc(size_t num_items, size_t size, void** result) {
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const size_t alloc_size = num_items * size;
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// Overflow check
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if (size && ((alloc_size / size) != num_items)) {
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*result = nullptr;
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return false;
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}
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if (!UncheckedMalloc(alloc_size, result))
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return false;
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memset(*result, 0, alloc_size);
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return true;
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}
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#endif // defined(OS_MACOSX)
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namespace internal {
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bool ReleaseAddressSpaceReservation() {
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#if BUILDFLAG(USE_PARTITION_ALLOC)
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return ReleaseReservation();
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#else
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return false;
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#endif
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}
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} // namespace internal
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} // namespace base
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