1 // Copyright (c) 2011, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // --- 31 // Author: Craig Silverstein <opensource (at) google.com> 32 // 33 // Used to override malloc routines on systems that define the 34 // memory allocation routines to be weak symbols in their libc 35 // (almost all unix-based systems are like this), on gcc, which 36 // suppports the 'alias' attribute. 37 38 #ifndef TCMALLOC_LIBC_OVERRIDE_GCC_AND_WEAK_INL_H_ 39 #define TCMALLOC_LIBC_OVERRIDE_GCC_AND_WEAK_INL_H_ 40 41 #ifdef HAVE_SYS_CDEFS_H 42 #include <sys/cdefs.h> // for __THROW 43 #endif 44 #include <gperftools/tcmalloc.h> 45 46 #ifndef __THROW // I guess we're not on a glibc-like system 47 # define __THROW // __THROW is just an optimization, so ok to make it "" 48 #endif 49 50 #ifndef __GNUC__ 51 # error libc_override_gcc_and_weak.h is for gcc distributions only. 52 #endif 53 54 #define ALIAS(tc_fn) __attribute__ ((alias (#tc_fn))) 55 56 #if defined(__ANDROID__) 57 // Android's bionic doesn't have std::bad_alloc. 58 #define STD_BAD_ALLOC 59 #else 60 #define STD_BAD_ALLOC std::bad_alloc 61 #endif 62 63 void* operator new(size_t size) throw (STD_BAD_ALLOC) 64 ALIAS(tc_new); 65 void operator delete(void* p) __THROW 66 ALIAS(tc_delete); 67 void* operator new[](size_t size) throw (STD_BAD_ALLOC) 68 ALIAS(tc_newarray); 69 void operator delete[](void* p) __THROW 70 ALIAS(tc_deletearray); 71 void* operator new(size_t size, const std::nothrow_t& nt) __THROW 72 ALIAS(tc_new_nothrow); 73 void* operator new[](size_t size, const std::nothrow_t& nt) __THROW 74 ALIAS(tc_newarray_nothrow); 75 void operator delete(void* p, const std::nothrow_t& nt) __THROW 76 ALIAS(tc_delete_nothrow); 77 void operator delete[](void* p, const std::nothrow_t& nt) __THROW 78 ALIAS(tc_deletearray_nothrow); 79 80 extern "C" { 81 void* malloc(size_t size) __THROW ALIAS(tc_malloc); 82 void free(void* ptr) __THROW ALIAS(tc_free); 83 void* realloc(void* ptr, size_t size) __THROW ALIAS(tc_realloc); 84 void* calloc(size_t n, size_t size) __THROW ALIAS(tc_calloc); 85 void cfree(void* ptr) __THROW ALIAS(tc_cfree); 86 void* memalign(size_t align, size_t s) __THROW ALIAS(tc_memalign); 87 void* valloc(size_t size) __THROW ALIAS(tc_valloc); 88 void* pvalloc(size_t size) __THROW ALIAS(tc_pvalloc); 89 int posix_memalign(void** r, size_t a, size_t s) __THROW 90 ALIAS(tc_posix_memalign); 91 void malloc_stats(void) __THROW ALIAS(tc_malloc_stats); 92 int mallopt(int cmd, int value) __THROW ALIAS(tc_mallopt); 93 #ifdef HAVE_STRUCT_MALLINFO 94 struct mallinfo mallinfo(void) __THROW ALIAS(tc_mallinfo); 95 #endif 96 size_t malloc_size(void* p) __THROW ALIAS(tc_malloc_size); 97 #if defined(__ANDROID__) && defined(ANDROID_NON_SDK_BUILD) 98 // In Android tree this function is defined differently than in the NDK. 99 size_t malloc_usable_size(const void* p) __THROW ALIAS(tc_malloc_size); 100 #else 101 size_t malloc_usable_size(void* p) __THROW ALIAS(tc_malloc_size); 102 #endif 103 } // extern "C" 104 105 #undef ALIAS 106 107 // No need to do anything at tcmalloc-registration time: we do it all 108 // via overriding weak symbols (at link time). 109 static void ReplaceSystemAlloc() { } 110 111 #endif // TCMALLOC_LIBC_OVERRIDE_GCC_AND_WEAK_INL_H_ 112
