Index: base/allocator/allocator_shim_default_dispatch_to_glibc.cc |
diff --git a/base/allocator/allocator_shim_default_dispatch_to_glibc.cc b/base/allocator/allocator_shim_default_dispatch_to_glibc.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..02facbad2eb7cff333e4f9ab6a78b5cffeb52632 |
--- /dev/null |
+++ b/base/allocator/allocator_shim_default_dispatch_to_glibc.cc |
@@ -0,0 +1,52 @@ |
+// 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 */ |
+}; |