// 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_