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| 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@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 void* operator new(size_t size) throw (std::bad_alloc) |
| 57 ALIAS(tc_new); |
| 58 void operator delete(void* p) __THROW |
| 59 ALIAS(tc_delete); |
| 60 void* operator new[](size_t size) throw (std::bad_alloc) |
| 61 ALIAS(tc_newarray); |
| 62 void operator delete[](void* p) __THROW |
| 63 ALIAS(tc_deletearray); |
| 64 void* operator new(size_t size, const std::nothrow_t& nt) __THROW |
| 65 ALIAS(tc_new_nothrow); |
| 66 void* operator new[](size_t size, const std::nothrow_t& nt) __THROW |
| 67 ALIAS(tc_newarray_nothrow); |
| 68 void operator delete(void* p, const std::nothrow_t& nt) __THROW |
| 69 ALIAS(tc_delete_nothrow); |
| 70 void operator delete[](void* p, const std::nothrow_t& nt) __THROW |
| 71 ALIAS(tc_deletearray_nothrow); |
| 72 |
| 73 extern "C" { |
| 74 void* malloc(size_t size) __THROW ALIAS(tc_malloc); |
| 75 void free(void* ptr) __THROW ALIAS(tc_free); |
| 76 void* realloc(void* ptr, size_t size) __THROW ALIAS(tc_realloc); |
| 77 void* calloc(size_t n, size_t size) __THROW ALIAS(tc_calloc); |
| 78 void cfree(void* ptr) __THROW ALIAS(tc_cfree); |
| 79 void* memalign(size_t align, size_t s) __THROW ALIAS(tc_memalign); |
| 80 void* valloc(size_t size) __THROW ALIAS(tc_valloc); |
| 81 void* pvalloc(size_t size) __THROW ALIAS(tc_pvalloc); |
| 82 int posix_memalign(void** r, size_t a, size_t s) __THROW |
| 83 ALIAS(tc_posix_memalign); |
| 84 void malloc_stats(void) __THROW ALIAS(tc_malloc_stats); |
| 85 int mallopt(int cmd, int value) __THROW ALIAS(tc_mallopt); |
| 86 #ifdef HAVE_STRUCT_MALLINFO |
| 87 struct mallinfo mallinfo(void) __THROW ALIAS(tc_mallinfo); |
| 88 #endif |
| 89 size_t malloc_size(void* p) __THROW ALIAS(tc_malloc_size); |
| 90 size_t malloc_usable_size(void* p) __THROW ALIAS(tc_malloc_size); |
| 91 } // extern "C" |
| 92 |
| 93 #undef ALIAS |
| 94 |
| 95 // No need to do anything at tcmalloc-registration time: we do it all |
| 96 // via overriding weak symbols (at link time). |
| 97 static void ReplaceSystemAlloc() { } |
| 98 |
| 99 #endif // TCMALLOC_LIBC_OVERRIDE_GCC_AND_WEAK_INL_H_ |
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