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67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
// Copyright 2013 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 "partition_alloc/buildflags.h"
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#if PA_BUILDFLAG(USE_ALLOCATOR_SHIM)
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#include "partition_alloc/shim/allocator_shim.h"
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#endif // PA_BUILDFLAG(USE_ALLOCATOR_SHIM)
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#include <windows.h> // Must be in front of other Windows header files.
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#include <new.h>
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#include <psapi.h>
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#include <stddef.h>
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#include <stdlib.h>
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namespace base {
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namespace {
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// Return a non-0 value to retry the allocation.
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int ReleaseReservationOrTerminate(size_t size) {
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constexpr int kRetryAllocation = 1;
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if (internal::ReleaseAddressSpaceReservation())
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return kRetryAllocation;
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TerminateBecauseOutOfMemory(size);
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return 0;
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}
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} // namespace
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void EnableTerminationOnHeapCorruption() {
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// Ignore the result code. Supported on XP SP3 and Vista.
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HeapSetInformation(NULL, HeapEnableTerminationOnCorruption, NULL, 0);
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}
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void EnableTerminationOnOutOfMemory() {
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constexpr int kCallNewHandlerOnAllocationFailure = 1;
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_set_new_handler(&ReleaseReservationOrTerminate);
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_set_new_mode(kCallNewHandlerOnAllocationFailure);
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}
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bool UncheckedMalloc(size_t size, void** result) {
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#if PA_BUILDFLAG(USE_ALLOCATOR_SHIM)
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*result = allocator_shim::UncheckedAlloc(size);
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#else
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// malloc_unchecked is required to implement UncheckedMalloc properly.
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// It's provided by allocator_shim_win.cc but since that's not always present,
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// In the case, use regular malloc instead.
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*result = malloc(size);
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#endif // PA_BUILDFLAG(USE_ALLOCATOR_SHIM)
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return *result != NULL;
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}
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void UncheckedFree(void* ptr) {
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#if PA_BUILDFLAG(USE_ALLOCATOR_SHIM)
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allocator_shim::UncheckedFree(ptr);
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#else
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free(ptr);
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#endif // PA_BUILDFLAG(USE_ALLOCATOR_SHIM)
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}
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} // namespace base
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