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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 <errno.h> | 5 #include <errno.h> |
6 #include <sys/syscall.h> | 6 #include <sys/syscall.h> |
7 #include <unistd.h> | 7 #include <unistd.h> |
8 | 8 |
9 #include <sstream> | 9 #include <sstream> |
10 #include <string> | 10 #include <string> |
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112 const int ret = IGNORE_EINTR(syscall(SYS_close, fd)); | 112 const int ret = IGNORE_EINTR(syscall(SYS_close, fd)); |
113 // Captures errno and restores it later in case it is changed. | 113 // Captures errno and restores it later in case it is changed. |
114 const ErrnoCapture close_errno; | 114 const ErrnoCapture close_errno; |
115 | 115 |
116 // Return if tracking is not enabled for the current process. | 116 // Return if tracking is not enabled for the current process. |
117 if (!g_stack_tracker || !g_stack_tracker->ShouldTrack()) | 117 if (!g_stack_tracker || !g_stack_tracker->ShouldTrack()) |
118 return ret; | 118 return ret; |
119 | 119 |
120 // Capture stack for successful close. | 120 // Capture stack for successful close. |
121 if (ret == 0) { | 121 if (ret == 0) { |
122 #if HAVE_TRACE_STACK_FRAME_POINTERS && !defined(MEMORY_SANITIZER) | 122 #if CAN_UNWIND_WITH_FRAME_POINTERS && !defined(MEMORY_SANITIZER) |
123 // Use TraceStackFramePointers because the backtrack() based default | 123 // Use TraceStackFramePointers because the backtrack() based default |
124 // capturing gets only the last stack frame and is not useful. | 124 // capturing gets only the last stack frame and is not useful. |
125 // With the exception of when MSAN is enabled. See comments for why | 125 // With the exception of when MSAN is enabled. See comments for why |
126 // StackTraceTest.TraceStackFramePointers is disabled in MSAN builds. | 126 // StackTraceTest.TraceStackFramePointers is disabled in MSAN builds. |
127 const void* frames[64]; | 127 const void* frames[64]; |
128 const size_t frame_count = | 128 const size_t frame_count = |
129 base::debug::TraceStackFramePointers(frames, arraysize(frames), 0); | 129 base::debug::TraceStackFramePointers(frames, arraysize(frames), 0); |
130 g_stack_tracker->SetStack(fd, base::debug::StackTrace(frames, frame_count)); | 130 g_stack_tracker->SetStack(fd, base::debug::StackTrace(frames, frame_count)); |
131 #else | 131 #else |
132 // Use default StackTrace when TraceStackFramePointers is not available. | 132 // Use default StackTrace when TraceStackFramePointers is not available. |
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178 const base::debug::StackTrace* GetLastCloseStackForTest(int fd) { | 178 const base::debug::StackTrace* GetLastCloseStackForTest(int fd) { |
179 return g_stack_tracker ? g_stack_tracker->GetStack(fd) : nullptr; | 179 return g_stack_tracker ? g_stack_tracker->GetStack(fd) : nullptr; |
180 } | 180 } |
181 | 181 |
182 void SetCloseTrackingIgnorePidForTest(bool ignore_pid) { | 182 void SetCloseTrackingIgnorePidForTest(bool ignore_pid) { |
183 DCHECK(g_stack_tracker); | 183 DCHECK(g_stack_tracker); |
184 g_stack_tracker->set_ignore_pid(ignore_pid); | 184 g_stack_tracker->set_ignore_pid(ignore_pid); |
185 } | 185 } |
186 | 186 |
187 } // namespace chromeos | 187 } // namespace chromeos |
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