1 /*
2 * Copyright (C) 2011 Google Inc. 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 * * Neither the name of Google Inc. nor the names of its
11 * contributors may be used to endorse or promote products derived from
12 * this software without specific prior written permission.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "config.h"
28
29 #include "DynamicAnnotations.h"
30
31 #if USE(DYNAMIC_ANNOTATIONS) && !USE(DYNAMIC_ANNOTATIONS_NOIMPL)
32
33 // Identical code folding(-Wl,--icf=all) countermeasures.
34 // This makes all Annotate* functions different, which prevents the linker from
35 // folding them.
36 #ifdef __COUNTER__
37 #define DYNAMIC_ANNOTATIONS_IMPL \
38 volatile short lineno = (__LINE__ << 8) + __COUNTER__; \
39 (void)lineno;
40 #else
41 #define DYNAMIC_ANNOTATIONS_IMPL \
42 volatile short lineno = (__LINE__ << 8); \
43 (void)lineno;
44 #endif
45
WTFAnnotateBenignRaceSized(const char *,int,const volatile void *,long,const char *)46 void WTFAnnotateBenignRaceSized(const char*, int, const volatile void*, long, const char*)
47 {
48 DYNAMIC_ANNOTATIONS_IMPL
49 }
50
WTFAnnotateHappensBefore(const char *,int,const volatile void *)51 void WTFAnnotateHappensBefore(const char*, int, const volatile void*)
52 {
53 DYNAMIC_ANNOTATIONS_IMPL
54 }
55
WTFAnnotateHappensAfter(const char *,int,const volatile void *)56 void WTFAnnotateHappensAfter(const char*, int, const volatile void*)
57 {
58 DYNAMIC_ANNOTATIONS_IMPL
59 }
60
61 #endif // USE(DYNAMIC_ANNOTATIONS) && !USE(DYNAMIC_ANNOTATIONS_NOIMPL)
62