crashpad/util/stdlib/aligned_allocator.cc
Mark Mentovai 50ed179e9a Use BUILDFLAG for OS checking
Use BUILDFLAG(IS_*) instead of defined(OS_*).

This was generated mostly mechnically by performing the following steps:
 - sed -i '' -E -e 's/defined\(OS_/BUILDFLAG(IS_/g' \
                -e 's%([ !])OS_([A-Z]+)%\1BUILDFLAG(IS_\2)%g' \
       $(git grep -l 'OS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - sed -i '' -e 's/#ifdef BUILDFLAG(/#if BUILDFLAG(/' \
       $(git grep -l '#ifdef BUILDFLAG('
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - gsed -i -z -E -e \
       's%(.*)#include "%\1#include "build/buildflag.h"\n#include "%' \
       $(git grep -l 'BUILDFLAG(IS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - Spot checks to move #include "build/buildflag.h" to the correct parts
   of files.
 - sed -i '' -E -e \
       's%^(#include "build/buildflag.h")$%#include "build/build_config.h"\n\1%' \
       $(grep -L '^#include "build/build_config.h"$'
         $(git grep -l 'BUILDFLAG(IS_'
           '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'))
 - Add “clang-format off” around tool usage messages.
 - git cl format
 - Update mini_chromium to 85ba51f98278 (intermediate step).
   TESTING ONLY).
 - for f in $(git grep -l '^#include "build/buildflag.h"$'
              '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'); do \
       grep -v '^#include "build/buildflag.h"$' "${f}" > /tmp/z; \
       cp /tmp/z "${f}"; done
 - git cl format
 - Update mini_chromium to 735143774c5f (intermediate step).
 - Update mini_chromium to f41420eb45fa (as checked in).
 - Update mini_chromium to 6e2f204b4ae1 (as checked in).

For ease of review and inspection, each of these steps is uploaded as a
new patch set in a review series.

This includes an update of mini_chromium to 6e2f204b4ae1:

f41420eb45fa Use BUILDFLAG for OS checking
6e2f204b4ae1 Include what you use: string_util.h uses build_config.h

Bug: chromium:1234043
Change-Id: Ieef86186f094c64e59b853729737e36982f8cf69
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3400258
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-01-19 20:21:19 +00:00

77 lines
2.1 KiB
C++

// Copyright 2015 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "util/stdlib/aligned_allocator.h"
#include <algorithm>
#include "build/build_config.h"
#if BUILDFLAG(IS_POSIX) || defined(_LIBCPP_STD_VER)
#include <stdlib.h>
#elif BUILDFLAG(IS_WIN)
#include <malloc.h>
#include <xutility>
#endif // BUILDFLAG(IS_POSIX)
namespace {
// Throws std::bad_alloc() by calling an internal function provided by the C++
// library to do so. This works even if C++ exceptions are disabled, causing
// program termination if uncaught.
void ThrowBadAlloc() {
#if BUILDFLAG(IS_POSIX) || defined(_LIBCPP_STD_VER)
// This works with both libc++ and libstdc++.
std::__throw_bad_alloc();
#elif BUILDFLAG(IS_WIN)
std::_Xbad_alloc();
#endif // BUILDFLAG(IS_POSIX)
}
} // namespace
namespace crashpad {
void* AlignedAllocate(size_t alignment, size_t size) {
#if BUILDFLAG(IS_POSIX)
// posix_memalign() requires that alignment be at least sizeof(void*), so the
// power-of-2 check needs to happen before potentially changing the alignment.
if (alignment == 0 || alignment & (alignment - 1)) {
ThrowBadAlloc();
}
void* pointer;
if (posix_memalign(&pointer, std::max(alignment, sizeof(void*)), size) != 0) {
ThrowBadAlloc();
}
#elif BUILDFLAG(IS_WIN)
void* pointer = _aligned_malloc(size, alignment);
if (pointer == nullptr) {
ThrowBadAlloc();
}
#endif // BUILDFLAG(IS_POSIX)
return pointer;
}
void AlignedFree(void* pointer) {
#if BUILDFLAG(IS_POSIX)
free(pointer);
#elif BUILDFLAG(IS_WIN)
_aligned_free(pointer);
#endif // BUILDFLAG(IS_POSIX)
}
} // namespace crashpad