1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
// Copyright (c) 2008, 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: Shinichiro Hamaji
//
// Define utilties for glog internal usage.
#ifndef UTILITIES_H__
#define UTILITIES_H__
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
# define OS_WINDOWS
#elif defined(__CYGWIN__) || defined(__CYGWIN32__)
# define OS_CYGWIN
#elif defined(linux) || defined(__linux) || defined(__linux__)
# ifndef OS_LINUX
# define OS_LINUX
# endif
#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
# define OS_MACOSX
#elif defined(__FreeBSD__)
# define OS_FREEBSD
#elif defined(__NetBSD__)
# define OS_NETBSD
#elif defined(__OpenBSD__)
# define OS_OPENBSD
#else
// TODO(hamaji): Add other platforms.
#endif
// printf macros for size_t, in the style of inttypes.h
#ifdef _LP64
#define __PRIS_PREFIX "z"
#else
#define __PRIS_PREFIX
#endif
// Use these macros after a % in a printf format string
// to get correct 32/64 bit behavior, like this:
// size_t size = records.size();
// printf("%"PRIuS"\n", size);
#define PRIdS __PRIS_PREFIX "d"
#define PRIxS __PRIS_PREFIX "x"
#define PRIuS __PRIS_PREFIX "u"
#define PRIXS __PRIS_PREFIX "X"
#define PRIoS __PRIS_PREFIX "o"
#include "base/mutex.h" // This must go first so we get _XOPEN_SOURCE
#include <string>
#if defined(OS_WINDOWS)
# include "port.h"
#endif
#include "config.h"
#include "glog/logging.h"
// There are three different ways we can try to get the stack trace:
//
// 1) The libunwind library. This is still in development, and as a
// separate library adds a new dependency, but doesn't need a frame
// pointer. It also doesn't call malloc.
//
// 2) Our hand-coded stack-unwinder. This depends on a certain stack
// layout, which is used by gcc (and those systems using a
// gcc-compatible ABI) on x86 systems, at least since gcc 2.95.
// It uses the frame pointer to do its work.
//
// 3) The gdb unwinder -- also the one used by the c++ exception code.
// It's obviously well-tested, but has a fatal flaw: it can call
// malloc() from the unwinder. This is a problem because we're
// trying to use the unwinder to instrument malloc().
//
// 4) The Windows API CaptureStackTrace.
//
// Note: if you add a new implementation here, make sure it works
// correctly when GetStackTrace() is called with max_depth == 0.
// Some code may do that.
#if defined(HAVE_LIB_UNWIND)
# define STACKTRACE_H "stacktrace_libunwind-inl.h"
#elif !defined(NO_FRAME_POINTER)
# if defined(__i386__) && __GNUC__ >= 2
# define STACKTRACE_H "stacktrace_x86-inl.h"
# elif defined(__x86_64__) && __GNUC__ >= 2 && HAVE_UNWIND_H
# define STACKTRACE_H "stacktrace_x86_64-inl.h"
# elif (defined(__ppc__) || defined(__PPC__)) && __GNUC__ >= 2
# define STACKTRACE_H "stacktrace_powerpc-inl.h"
# elif defined(OS_WINDOWS)
# define STACKTRACE_H "stacktrace_windows-inl.h"
# endif
#endif
#if !defined(STACKTRACE_H) && defined(HAVE_EXECINFO_H)
# define STACKTRACE_H "stacktrace_generic-inl.h"
#endif
#if defined(STACKTRACE_H)
# define HAVE_STACKTRACE
#endif
#ifndef HAVE_SYMBOLIZE
// defined by gcc
#if defined(__ELF__) && defined(OS_LINUX)
# define HAVE_SYMBOLIZE
#elif defined(OS_MACOSX) && defined(HAVE_DLADDR)
// Use dladdr to symbolize.
# define HAVE_SYMBOLIZE
#elif defined(OS_WINDOWS)
// Use DbgHelp to symbolize
# define HAVE_SYMBOLIZE
#endif
#endif // !defined(HAVE_SYMBOLIZE)
#ifndef ARRAYSIZE
// There is a better way, but this is good enough for our purpose.
# define ARRAYSIZE(a) (sizeof(a) / sizeof(*(a)))
#endif
_START_GOOGLE_NAMESPACE_
namespace glog_internal_namespace_ {
#ifdef HAVE___ATTRIBUTE__
# define ATTRIBUTE_NOINLINE __attribute__ ((noinline))
# define HAVE_ATTRIBUTE_NOINLINE
#elif defined(OS_WINDOWS)
# define ATTRIBUTE_NOINLINE __declspec(noinline)
# define HAVE_ATTRIBUTE_NOINLINE
#else
# define ATTRIBUTE_NOINLINE
#endif
const char* ProgramInvocationShortName();
bool IsGoogleLoggingInitialized();
int64 CycleClock_Now();
int64 UsecToCycles(int64 usec);
typedef double WallTime;
WallTime WallTime_Now();
int32 GetMainThreadPid();
bool PidHasChanged();
pid_t GetTID();
const std::string& MyUserName();
// Get the part of filepath after the last path separator.
// (Doesn't modify filepath, contrary to basename() in libgen.h.)
const char* const_basename(const char* filepath);
// Wrapper of __sync_val_compare_and_swap. If the GCC extension isn't
// defined, we try the CPU specific logics (we only support x86 and
// x86_64 for now) first, then use a naive implementation, which has a
// race condition.
template<typename T>
inline T sync_val_compare_and_swap(T* ptr, T oldval, T newval) {
#if defined(HAVE___SYNC_VAL_COMPARE_AND_SWAP)
return __sync_val_compare_and_swap(ptr, oldval, newval);
#elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
T ret;
__asm__ __volatile__("lock; cmpxchg %1, (%2);"
:"=a"(ret)
// GCC may produces %sil or %dil for
// constraint "r", but some of apple's gas
// dosn't know the 8 bit registers.
// We use "q" to avoid these registers.
:"q"(newval), "q"(ptr), "a"(oldval)
:"memory", "cc");
return ret;
#else
T ret = *ptr;
if (ret == oldval) {
*ptr = newval;
}
return ret;
#endif
}
void DumpStackTraceToString(std::string* stacktrace);
struct CrashReason {
CrashReason() : filename(0), line_number(0), message(0), depth(0) {}
const char* filename;
int line_number;
const char* message;
// We'll also store a bit of stack trace context at the time of crash as
// it may not be available later on.
void* stack[32];
int depth;
};
void SetCrashReason(const CrashReason* r);
void InitGoogleLoggingUtilities(const char* argv0);
void ShutdownGoogleLoggingUtilities();
} // namespace glog_internal_namespace_
_END_GOOGLE_NAMESPACE_
using namespace GOOGLE_NAMESPACE::glog_internal_namespace_;
#endif // UTILITIES_H__
|
