63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
// Copyright 2014 The Chromium Authors
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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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#include <string.h>
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#include "base/allocator/buildflags.h"
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#include "base/allocator/partition_allocator/partition_alloc_buildflags.h"
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#include "base/cxx17_backports.h"
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#include "base/debug/alias.h"
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#include "base/immediate_crash.h"
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#include "base/logging.h"
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#include "build/build_config.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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#if BUILDFLAG(IS_WIN)
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#include <windows.h>
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#else
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#include <unistd.h>
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#endif // BUILDFLAG(IS_WIN)
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namespace base {
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// Defined in memory_mac.mm for macOS + use_partition_alloc_as_malloc=false.
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// In case of use_partition_alloc_as_malloc=true, no need to route the call to
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// the system default calloc of macOS.
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#if !BUILDFLAG(IS_APPLE) || BUILDFLAG(USE_PARTITION_ALLOC_AS_MALLOC)
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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 // !BUILDFLAG(IS_APPLE) || BUILDFLAG(USE_PARTITION_ALLOC_AS_MALLOC)
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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 partition_alloc::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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