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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 on systems that don't have their own definition of | |
34 // malloc/new/etc. (Typically this will be a windows msvcrt.dll that | |
35 // has been edited to remove the definitions.) We can just define our | |
36 // own as normal functions. | |
37 // | |
38 // This should also work on systems were all the malloc routines are | |
39 // defined as weak symbols, and there's no support for aliasing. | |
40 | |
41 #ifndef TCMALLOC_LIBC_OVERRIDE_REDEFINE_H_ | |
42 #define TCMALLOC_LIBC_OVERRIDE_REDEFINE_H_ | |
43 | |
44 #ifdef HAVE_SYS_CDEFS_H | |
45 #include <sys/cdefs.h> // for __THROW | |
46 #endif | |
47 | |
48 #ifndef __THROW // I guess we're not on a glibc-like system | |
49 # define __THROW // __THROW is just an optimization, so ok to make it "" | |
50 #endif | |
51 | |
52 void* operator new(size_t size) { return tc_new(size); } | |
53 void operator delete(void* p) __THROW { tc_delete(p); } | |
54 void* operator new[](size_t size) { return tc_newarray(size); } | |
55 void operator delete[](void* p) __THROW { tc_deletearray(p); } | |
56 void* operator new(size_t size, const std::nothrow_t& nt) __THROW { | |
57 return tc_new_nothrow(size, nt); | |
58 } | |
59 void* operator new[](size_t size, const std::nothrow_t& nt) __THROW { | |
60 return tc_newarray_nothrow(size, nt); | |
61 } | |
62 void operator delete(void* ptr, const std::nothrow_t& nt) __THROW { | |
63 return tc_delete_nothrow(ptr, nt); | |
64 } | |
65 void operator delete[](void* ptr, const std::nothrow_t& nt) __THROW { | |
66 return tc_deletearray_nothrow(ptr, nt); | |
67 } | |
68 extern "C" { | |
69 void* malloc(size_t s) __THROW { return tc_malloc(s); } | |
70 void free(void* p) __THROW { tc_free(p); } | |
71 void* realloc(void* p, size_t s) __THROW { return tc_realloc(p, s); } | |
72 void* calloc(size_t n, size_t s) __THROW { return tc_calloc(n, s); } | |
73 void cfree(void* p) __THROW { tc_cfree(p); } | |
74 void* memalign(size_t a, size_t s) __THROW { return tc_memalign(a, s); } | |
75 void* valloc(size_t s) __THROW { return tc_valloc(s); } | |
76 void* pvalloc(size_t s) __THROW { return tc_pvalloc(s); } | |
77 int posix_memalign(void** r, size_t a, size_t s) __THROW { | |
78 return tc_posix_memalign(r, a, s); | |
79 } | |
80 void malloc_stats(void) __THROW { tc_malloc_stats(); } | |
81 int mallopt(int cmd, int v) __THROW { return tc_mallopt(cmd, v); } | |
82 #ifdef HAVE_STRUCT_MALLINFO | |
83 struct mallinfo mallinfo(void) __THROW { return tc_mallinfo(); } | |
84 #endif | |
85 size_t malloc_size(void* p) __THROW { return tc_malloc_size(p); } | |
86 size_t malloc_usable_size(void* p) __THROW { return tc_malloc_size(p); } | |
87 } // extern "C" | |
88 | |
89 // No need to do anything at tcmalloc-registration time: we do it all | |
90 // via overriding weak symbols (at link time). | |
91 static void ReplaceSystemAlloc() { } | |
92 | |
93 #endif // TCMALLOC_LIBC_OVERRIDE_REDEFINE_H_ | |
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