| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/allocator/allocator_shim.h" |
| |
| // This translation unit defines a default dispatch for the allocator shim which |
| // routes allocations to libc functions. |
| // The code here is strongly inspired from tcmalloc's libc_override_glibc.h. |
| |
| extern "C" { |
| void* __libc_malloc(size_t size); |
| void* __libc_calloc(size_t n, size_t size); |
| void* __libc_realloc(void* address, size_t size); |
| void* __libc_memalign(size_t alignment, size_t size); |
| void __libc_free(void* ptr); |
| } // extern "C" |
| |
| namespace { |
| |
| using base::allocator::AllocatorDispatch; |
| |
| void* GlibcMalloc(const AllocatorDispatch*, size_t size) { |
| return __libc_malloc(size); |
| } |
| |
| void* GlibcCalloc(const AllocatorDispatch*, size_t n, size_t size) { |
| return __libc_calloc(n, size); |
| } |
| |
| void* GlibcRealloc(const AllocatorDispatch*, void* address, size_t size) { |
| return __libc_realloc(address, size); |
| } |
| |
| void* GlibcMemalign(const AllocatorDispatch*, size_t alignment, size_t size) { |
| return __libc_memalign(alignment, size); |
| } |
| |
| void GlibcFree(const AllocatorDispatch*, void* address) { |
| __libc_free(address); |
| } |
| |
| } // namespace |
| |
| const AllocatorDispatch AllocatorDispatch::default_dispatch = { |
| &GlibcMalloc, /* alloc_function */ |
| &GlibcCalloc, /* alloc_zero_initialized_function */ |
| &GlibcMemalign, /* alloc_aligned_function */ |
| &GlibcRealloc, /* realloc_function */ |
| &GlibcFree, /* free_function */ |
| nullptr, /* next */ |
| }; |