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1 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "build/build_config.h" | 5 #include "build/build_config.h" |
6 #include "base/debug_util.h" | 6 #include "base/debug_util.h" |
7 | 7 |
8 #include <errno.h> | 8 #include <errno.h> |
9 #include <execinfo.h> | 9 #include <execinfo.h> |
10 #include <fcntl.h> | 10 #include <fcntl.h> |
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85 // read this much all at once. In practice this will generally be true. | 85 // read this much all at once. In practice this will generally be true. |
86 // This simplifies and speeds up things considerably. | 86 // This simplifies and speeds up things considerably. |
87 char buf[1024]; | 87 char buf[1024]; |
88 | 88 |
89 ssize_t num_read = HANDLE_EINTR(read(status_fd, buf, sizeof(buf))); | 89 ssize_t num_read = HANDLE_EINTR(read(status_fd, buf, sizeof(buf))); |
90 HANDLE_EINTR(close(status_fd)); | 90 HANDLE_EINTR(close(status_fd)); |
91 | 91 |
92 if (num_read <= 0) | 92 if (num_read <= 0) |
93 return false; | 93 return false; |
94 | 94 |
95 StringPiece status(buf, num_read); | 95 base::StringPiece status(buf, num_read); |
96 StringPiece tracer("TracerPid:\t"); | 96 base::StringPiece tracer("TracerPid:\t"); |
97 | 97 |
98 StringPiece::size_type pid_index = status.find(tracer); | 98 base::StringPiece::size_type pid_index = status.find(tracer); |
99 if (pid_index == StringPiece::npos) | 99 if (pid_index == base::StringPiece::npos) |
100 return false; | 100 return false; |
101 | 101 |
102 // Our pid is 0 without a debugger, assume this for any pid starting with 0. | 102 // Our pid is 0 without a debugger, assume this for any pid starting with 0. |
103 pid_index += tracer.size(); | 103 pid_index += tracer.size(); |
104 return pid_index < status.size() && status[pid_index] != '0'; | 104 return pid_index < status.size() && status[pid_index] != '0'; |
105 } | 105 } |
106 | 106 |
107 #endif // OS_LINUX | 107 #endif // OS_LINUX |
108 | 108 |
109 // static | 109 // static |
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137 for (int i = 0; i < count_; ++i) { | 137 for (int i = 0; i < count_; ++i) { |
138 (*os) << "\t" << trace_[i] << "\n"; | 138 (*os) << "\t" << trace_[i] << "\n"; |
139 } | 139 } |
140 } else { | 140 } else { |
141 (*os) << "Backtrace:\n"; | 141 (*os) << "Backtrace:\n"; |
142 for (int i = 0; i < count_; ++i) { | 142 for (int i = 0; i < count_; ++i) { |
143 (*os) << "\t" << trace_symbols.get()[i] << "\n"; | 143 (*os) << "\t" << trace_symbols.get()[i] << "\n"; |
144 } | 144 } |
145 } | 145 } |
146 } | 146 } |
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