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Brian Fiete 2019-08-23 11:56:54 -07:00
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BeefMem/gperftools/src/libc_override_gcc_and_weak.h Normal file
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// Copyright (c) 2011, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// ---
// Author: Craig Silverstein <opensource@google.com>
//
// Used to override malloc routines on systems that define the
// memory allocation routines to be weak symbols in their libc
// (almost all unix-based systems are like this), on gcc, which
// suppports the 'alias' attribute.
#ifndef TCMALLOC_LIBC_OVERRIDE_GCC_AND_WEAK_INL_H_
#define TCMALLOC_LIBC_OVERRIDE_GCC_AND_WEAK_INL_H_
#ifdef HAVE_SYS_CDEFS_H
#include <sys/cdefs.h> // for __THROW
#endif
#include <gperftools/tcmalloc.h>
#ifndef __THROW // I guess we're not on a glibc-like system
# define __THROW // __THROW is just an optimization, so ok to make it ""
#endif
#ifndef __GNUC__
# error libc_override_gcc_and_weak.h is for gcc distributions only.
#endif
#define ALIAS(tc_fn) __attribute__ ((alias (#tc_fn)))
void* operator new(size_t size) throw (std::bad_alloc)
ALIAS(tc_new);
void operator delete(void* p) __THROW
ALIAS(tc_delete);
void* operator new[](size_t size) throw (std::bad_alloc)
ALIAS(tc_newarray);
void operator delete[](void* p) __THROW
ALIAS(tc_deletearray);
void* operator new(size_t size, const std::nothrow_t& nt) __THROW
ALIAS(tc_new_nothrow);
void* operator new[](size_t size, const std::nothrow_t& nt) __THROW
ALIAS(tc_newarray_nothrow);
void operator delete(void* p, const std::nothrow_t& nt) __THROW
ALIAS(tc_delete_nothrow);
void operator delete[](void* p, const std::nothrow_t& nt) __THROW
ALIAS(tc_deletearray_nothrow);
extern "C" {
void* malloc(size_t size) __THROW ALIAS(tc_malloc);
void free(void* ptr) __THROW ALIAS(tc_free);
void* realloc(void* ptr, size_t size) __THROW ALIAS(tc_realloc);
void* calloc(size_t n, size_t size) __THROW ALIAS(tc_calloc);
void cfree(void* ptr) __THROW ALIAS(tc_cfree);
void* memalign(size_t align, size_t s) __THROW ALIAS(tc_memalign);
void* valloc(size_t size) __THROW ALIAS(tc_valloc);
void* pvalloc(size_t size) __THROW ALIAS(tc_pvalloc);
int posix_memalign(void** r, size_t a, size_t s) __THROW
ALIAS(tc_posix_memalign);
void malloc_stats(void) __THROW ALIAS(tc_malloc_stats);
int mallopt(int cmd, int value) __THROW ALIAS(tc_mallopt);
#ifdef HAVE_STRUCT_MALLINFO
struct mallinfo mallinfo(void) __THROW ALIAS(tc_mallinfo);
#endif
size_t malloc_size(void* p) __THROW ALIAS(tc_malloc_size);
size_t malloc_usable_size(void* p) __THROW ALIAS(tc_malloc_size);
} // extern "C"
#undef ALIAS
// No need to do anything at tcmalloc-registration time: we do it all
// via overriding weak symbols (at link time).
static void ReplaceSystemAlloc() { }
#endif // TCMALLOC_LIBC_OVERRIDE_GCC_AND_WEAK_INL_H_