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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/process/memory.h"
#include "base/allocator/partition_allocator/src/partition_alloc/partition_alloc_buildflags.h"
#if BUILDFLAG(USE_ALLOCATOR_SHIM)
#include "base/allocator/partition_allocator/src/partition_alloc/shim/allocator_shim.h"
#endif // BUILDFLAG(USE_ALLOCATOR_SHIM)
#include <windows.h> // Must be in front of other Windows header files.
#include <new.h>
#include <psapi.h>
#include <stddef.h>
#include <stdlib.h>
namespace base {
namespace {
// Return a non-0 value to retry the allocation.
int ReleaseReservationOrTerminate(size_t size) {
constexpr int kRetryAllocation = 1;
if (internal::ReleaseAddressSpaceReservation())
return kRetryAllocation;
TerminateBecauseOutOfMemory(size);
return 0;
}
} // namespace
void EnableTerminationOnHeapCorruption() {
// Ignore the result code. Supported on XP SP3 and Vista.
HeapSetInformation(NULL, HeapEnableTerminationOnCorruption, NULL, 0);
}
void EnableTerminationOnOutOfMemory() {
constexpr int kCallNewHandlerOnAllocationFailure = 1;
_set_new_handler(&ReleaseReservationOrTerminate);
_set_new_mode(kCallNewHandlerOnAllocationFailure);
}
bool UncheckedMalloc(size_t size, void** result) {
#if BUILDFLAG(USE_ALLOCATOR_SHIM)
*result = allocator_shim::UncheckedAlloc(size);
#else
// malloc_unchecked is required to implement UncheckedMalloc properly.
// It's provided by allocator_shim_win.cc but since that's not always present,
// In the case, use regular malloc instead.
*result = malloc(size);
#endif // BUILDFLAG(USE_ALLOCATOR_SHIM)
return *result != NULL;
}
void UncheckedFree(void* ptr) {
#if BUILDFLAG(USE_ALLOCATOR_SHIM)
allocator_shim::UncheckedFree(ptr);
#else
free(ptr);
#endif // BUILDFLAG(USE_ALLOCATOR_SHIM)
}
} // namespace base
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