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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "content/common/child_process.h" | 5 #include "content/child/child_process.h" |
| 6 | |
| 7 #if defined(OS_POSIX) && !defined(OS_ANDROID) | |
| 8 #include <signal.h> // For SigUSR1Handler below. | |
| 9 #endif | |
| 10 | 6 |
| 11 #include "base/message_loop.h" | 7 #include "base/message_loop.h" |
| 12 #include "base/metrics/statistics_recorder.h" | 8 #include "base/metrics/statistics_recorder.h" |
| 13 #include "base/process_util.h" | 9 #include "base/process_util.h" |
| 14 #include "base/string_number_conversions.h" | 10 #include "base/string_number_conversions.h" |
| 15 #include "base/threading/thread.h" | 11 #include "base/threading/thread.h" |
| 16 #include "base/utf_string_conversions.h" | 12 #include "base/utf_string_conversions.h" |
| 17 #include "content/common/child_thread.h" | 13 #include "content/child/child_thread.h" |
| 18 | 14 |
| 19 #if defined(OS_ANDROID) | 15 #if defined(OS_ANDROID) |
| 20 #include "base/debug/debugger.h" | 16 #include "base/debug/debugger.h" |
| 21 #endif | 17 #endif |
| 22 | 18 |
| 23 #if defined(OS_POSIX) && !defined(OS_ANDROID) | |
| 24 static void SigUSR1Handler(int signal) { } | |
| 25 #endif | |
| 26 | |
| 27 namespace content { | 19 namespace content { |
| 28 // The singleton instance for this process. | 20 // The singleton instance for this process. |
| 29 ChildProcess* child_process = NULL; | 21 ChildProcess* child_process = NULL; |
| 30 | 22 |
| 31 ChildProcess::ChildProcess() | 23 ChildProcess::ChildProcess() |
| 32 : ref_count_(0), | 24 : ref_count_(0), |
| 33 shutdown_event_(true, false), | 25 shutdown_event_(true, false), |
| 34 io_thread_("Chrome_ChildIOThread") { | 26 io_thread_("Chrome_ChildIOThread") { |
| 35 DCHECK(!child_process); | 27 DCHECK(!child_process); |
| 36 child_process = this; | 28 child_process = this; |
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| 93 | 85 |
| 94 ChildProcess* ChildProcess::current() { | 86 ChildProcess* ChildProcess::current() { |
| 95 return child_process; | 87 return child_process; |
| 96 } | 88 } |
| 97 | 89 |
| 98 base::WaitableEvent* ChildProcess::GetShutDownEvent() { | 90 base::WaitableEvent* ChildProcess::GetShutDownEvent() { |
| 99 DCHECK(child_process); | 91 DCHECK(child_process); |
| 100 return &child_process->shutdown_event_; | 92 return &child_process->shutdown_event_; |
| 101 } | 93 } |
| 102 | 94 |
| 103 void ChildProcess::WaitForDebugger(const std::string& label) { | |
| 104 #if defined(OS_WIN) | |
| 105 #if defined(GOOGLE_CHROME_BUILD) | |
| 106 std::string title = "Google Chrome"; | |
| 107 #else // CHROMIUM_BUILD | |
| 108 std::string title = "Chromium"; | |
| 109 #endif // CHROMIUM_BUILD | |
| 110 title += " "; | |
| 111 title += label; // makes attaching to process easier | |
| 112 std::string message = label; | |
| 113 message += " starting with pid: "; | |
| 114 message += base::IntToString(base::GetCurrentProcId()); | |
| 115 ::MessageBox(NULL, UTF8ToWide(message).c_str(), UTF8ToWide(title).c_str(), | |
| 116 MB_OK | MB_SETFOREGROUND); | |
| 117 #elif defined(OS_POSIX) | |
| 118 #if defined(OS_ANDROID) | |
| 119 LOG(ERROR) << label << " waiting for GDB."; | |
| 120 // Wait 24 hours for a debugger to be attached to the current process. | |
| 121 base::debug::WaitForDebugger(24 * 60 * 60, false); | |
| 122 #else | |
| 123 // TODO(playmobil): In the long term, overriding this flag doesn't seem | |
| 124 // right, either use our own flag or open a dialog we can use. | |
| 125 // This is just to ease debugging in the interim. | |
| 126 LOG(ERROR) << label | |
| 127 << " (" | |
| 128 << getpid() | |
| 129 << ") paused waiting for debugger to attach. " | |
| 130 << "Send SIGUSR1 to unpause."; | |
| 131 // Install a signal handler so that pause can be woken. | |
| 132 struct sigaction sa; | |
| 133 memset(&sa, 0, sizeof(sa)); | |
| 134 sa.sa_handler = SigUSR1Handler; | |
| 135 sigaction(SIGUSR1, &sa, NULL); | |
| 136 | |
| 137 pause(); | |
| 138 #endif // defined(OS_ANDROID) | |
| 139 #endif // defined(OS_POSIX) | |
| 140 } | |
| 141 | |
| 142 } // namespace content | 95 } // namespace content |
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