| // Copyright 2014 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 <string.h> |
| |
| #include "base/allocator/buildflags.h" |
| #include "base/debug/alias.h" |
| #include "base/immediate_crash.h" |
| #include "base/logging.h" |
| #include "build/build_config.h" |
| #include "partition_alloc/buildflags.h" |
| |
| #if PA_BUILDFLAG(USE_PARTITION_ALLOC) |
| #include "partition_alloc/page_allocator.h" |
| #endif |
| |
| #if BUILDFLAG(IS_WIN) |
| #include <windows.h> |
| #else |
| #include <unistd.h> |
| #endif // BUILDFLAG(IS_WIN) |
| |
| namespace base { |
| |
| // Defined in memory_mac.mm for macOS + use_partition_alloc_as_malloc=false. |
| // In case of use_partition_alloc_as_malloc=true, no need to route the call to |
| // the system default calloc of macOS. |
| #if !BUILDFLAG(IS_APPLE) || PA_BUILDFLAG(USE_PARTITION_ALLOC_AS_MALLOC) |
| |
| bool UncheckedCalloc(size_t num_items, size_t size, void** result) { |
| const size_t alloc_size = num_items * size; |
| |
| // Overflow check |
| if (size && ((alloc_size / size) != num_items)) { |
| *result = nullptr; |
| return false; |
| } |
| |
| if (!UncheckedMalloc(alloc_size, result)) |
| return false; |
| |
| memset(*result, 0, alloc_size); |
| return true; |
| } |
| |
| #endif // !BUILDFLAG(IS_APPLE) || PA_BUILDFLAG(USE_PARTITION_ALLOC_AS_MALLOC) |
| |
| namespace internal { |
| bool ReleaseAddressSpaceReservation() { |
| #if PA_BUILDFLAG(USE_PARTITION_ALLOC) |
| return partition_alloc::ReleaseReservation(); |
| #else |
| return false; |
| #endif |
| } |
| } // namespace internal |
| |
| } // namespace base |