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| 1 // Copyright (c) 2011 The Native Client Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 #include "debugger/core/debug_api.h" | |
| 5 #include <signal.h> | |
| 6 #include <stdio.h> | |
| 7 #include <algorithm> | |
| 8 #include "debugger/base/debug_command_line.h" | |
| 9 #include "debugger/core/debuggee_process.h" | |
| 10 #include "debugger/core/debuggee_thread.h" | |
| 11 | |
| 12 namespace { | |
| 13 const int kWatForAllThreadsToStopSecs = 3; | |
| 14 void delete_obj(debug::DebuggeeThread* obj) { delete obj; } | |
| 15 } // namespace | |
| 16 | |
| 17 namespace debug { | |
| 18 | |
| 19 DebuggeeProcess::DebuggeeProcess (DebugAPI* debug_api) | |
| 20 : debug_api_(*debug_api), | |
| 21 nexe_mem_base_(0), | |
| 22 stopping_treads_(false), | |
| 23 is_first_event_(true) { | |
| 24 } | |
| 25 | |
| 26 DebuggeeProcess::~DebuggeeProcess() { | |
| 27 std::for_each(threads_.begin(), threads_.end(), delete_obj); | |
| 28 threads_.clear(); | |
| 29 } | |
| 30 | |
| 31 DebuggeeThread* DebuggeeProcess::GetThread(int tid) { | |
| 32 ThreadConstIter it = threads_.begin(); | |
| 33 while (it != threads_.end()) { | |
| 34 DebuggeeThread* thread = *it; | |
| 35 if (tid == thread->id()) | |
| 36 return thread; | |
| 37 ++it; | |
| 38 } | |
| 39 return NULL; | |
| 40 } | |
| 41 | |
| 42 void DebuggeeProcess::GetThreadsIds(std::deque<int>* threads) const { | |
| 43 threads->clear(); | |
| 44 ThreadConstIter it = threads_.begin(); | |
| 45 while (it != threads_.end()) { | |
| 46 threads->push_back((*it)->id()); | |
| 47 ++it; | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 bool DebuggeeProcess::WaitForDebugEventAndDispatchIt(DebugEvent* debug_event) { | |
| 52 while (debug_api_.WaitForDebugEvent(debug_event)) { | |
| 53 if (is_first_event_) { | |
| 54 is_first_event_ = false; | |
| 55 debug_api_.SetupProc(debug_event->pid_); // Make it trace all children. | |
| 56 } | |
| 57 if (OnDebugEvent(*debug_event)) | |
| 58 return true; | |
| 59 } | |
| 60 return false; | |
| 61 } | |
| 62 | |
| 63 | |
| 64 bool DebuggeeProcess::OnDebugEvent(const DebugEvent& debug_event) { | |
| 65 DebuggeeThread* thread = GetThread(debug_event.pid_); | |
| 66 if (NULL == thread) { | |
| 67 // Check if it's 'OUTPUT_DEBUG_STRING' event | |
| 68 std::string str; | |
| 69 if (debug_api_.ReadDebugString(debug_event, &str)) { | |
| 70 // parse it | |
| 71 CommandLine debug_info(str); | |
| 72 std::string event = debug_info.GetStringSwitch("-event", ""); | |
| 73 if ("AppCreate" == event) { | |
| 74 void* mem_base = debug_info.GetAddrSwitch("-mem_start"); | |
| 75 nexe_mem_base_ = reinterpret_cast<uint64_t>(mem_base); | |
| 76 void* user_entry_point = debug_info.GetAddrSwitch("-user_entry_pt"); | |
| 77 printf("TR03.03: NaClAppCreate mem_base=%p entry_point=%p", | |
| 78 mem_base, | |
| 79 user_entry_point); | |
| 80 } else if ("ThreadCreate" == event) { | |
| 81 thread = new DebuggeeThread(debug_event.pid_, &debug_api_); | |
| 82 threads_.push_back(thread); | |
| 83 } | |
| 84 } | |
| 85 } | |
| 86 if (NULL == thread) { | |
| 87 // it's not NaClApp thread, and we ignore them | |
| 88 DebuggeeThread thr(debug_event.pid_, &debug_api_); | |
| 89 thr.OnDebugEvent(debug_event); | |
| 90 thr.Continue(); | |
| 91 return false; | |
| 92 } | |
| 93 | |
| 94 // It's a known NaClApp thread. | |
| 95 // So, what we need to do: | |
| 96 // 1) change the thread state | |
| 97 // 2) stop all other threads | |
| 98 thread->OnDebugEvent(debug_event); | |
| 99 if (thread->state() != PROCESS_STOPPED) // thread is deed | |
| 100 DeleteThread(debug_event.pid_); | |
| 101 else | |
| 102 StopAllThreads(); | |
| 103 return true; | |
| 104 } | |
| 105 | |
| 106 void DebuggeeProcess::StopAllThreads() { | |
| 107 if (stopping_treads_) | |
| 108 return; | |
| 109 stopping_treads_ = true; | |
| 110 ThreadConstIter it = threads_.begin(); | |
| 111 while (it != threads_.end()) { | |
| 112 DebuggeeThread* thread = *it; | |
| 113 if (thread->state() == RUNNING) | |
| 114 debug_api_.PostSignal(thread->id(), SIGSTOP); | |
| 115 ++it; | |
| 116 } | |
| 117 // Wait till all threads stops. | |
| 118 time_t end = time(0) + kWatForAllThreadsToStopSecs; | |
| 119 do { | |
| 120 if (AllThreadStopped()) | |
| 121 break; | |
| 122 DebugEvent debug_event; | |
| 123 while (debug_api_.WaitForDebugEvent(&debug_event)) | |
| 124 OnDebugEvent(debug_event); | |
| 125 | |
| 126 } while(time(0) < end); | |
| 127 | |
| 128 if (!AllThreadStopped()) | |
| 129 printf("Warning: not all threads stopped.\n"); | |
| 130 | |
| 131 stopping_treads_ = false; | |
| 132 } | |
| 133 | |
| 134 bool DebuggeeProcess::AllThreadStopped() { | |
| 135 ThreadConstIter it = threads_.begin(); | |
| 136 while (it != threads_.end()) { | |
| 137 if ((*it)->state() == RUNNING) | |
| 138 return false; | |
| 139 ++it; | |
| 140 } | |
| 141 return true; | |
| 142 } | |
| 143 | |
| 144 void DebuggeeProcess::Continue(int tid) { | |
| 145 DebuggeeThread* thread = GetThread(tid); | |
| 146 if (NULL != thread) | |
| 147 thread->Continue(); | |
| 148 | |
| 149 ThreadConstIter it = threads_.begin(); | |
| 150 while (it != threads_.end()) { | |
| 151 (*it)->Continue(); | |
| 152 ++it; | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 void DebuggeeProcess::DeleteThread(int tid) { | |
| 157 ThreadIter it = threads_.begin(); | |
| 158 while (it != threads_.end()) { | |
| 159 DebuggeeThread* thread = *it; | |
| 160 if (tid == thread->id()) { | |
| 161 delete thread; | |
| 162 threads_.erase(it); | |
| 163 break; | |
| 164 } | |
| 165 ++it; | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 } // namespace debug | |
| 170 | |
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Chromium Code Reviews
Issue 10928195:
First round of dead file removal (Closed)
Base URL: https://github.com/samclegg/nativeclient-sdk.git@master