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// 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_check.h"
#include "base/allocator/features.h"
#include "build/build_config.h"
#if defined(OS_WIN)
#include "base/allocator/winheap_stubs_win.h"
#endif
#if defined(OS_LINUX)
#include <malloc.h>
#endif
#if defined(OS_MACOSX)
#include "base/allocator/allocator_interception_mac.h"
#endif
namespace base {
namespace allocator {
bool IsAllocatorInitialized() {
#if defined(OS_WIN) && BUILDFLAG(USE_ALLOCATOR_SHIM)
// Set by allocator_shim_override_ucrt_symbols_win.h when the
// shimmed _set_new_mode() is called.
return g_is_win_shim_layer_initialized;
#elif defined(OS_LINUX) && defined(USE_TCMALLOC) && \
!defined(MEMORY_TOOL_REPLACES_ALLOCATOR)
// From third_party/tcmalloc/chromium/src/gperftools/tcmalloc.h.
// TODO(primiano): replace with an include once base can depend on allocator.
#define TC_MALLOPT_IS_OVERRIDDEN_BY_TCMALLOC 0xbeef42
return (mallopt(TC_MALLOPT_IS_OVERRIDDEN_BY_TCMALLOC, 0) ==
TC_MALLOPT_IS_OVERRIDDEN_BY_TCMALLOC);
#elif defined(OS_MACOSX) && !defined(MEMORY_TOOL_REPLACES_ALLOCATOR) && !defined(TOOLKIT_QT)
// From allocator_interception_mac.mm.
return base::allocator::g_replaced_default_zone;
#else
return true;
#endif
}
} // namespace allocator
} // namespace base
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