2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ART_RUNTIME_SIGNAL_CATCHER_H_
18 #define ART_RUNTIME_SIGNAL_CATCHER_H_
20 #include "base/mutex.h"
29 * A daemon thread that catches signals and does something useful. For
30 * example, when a SIGQUIT (Ctrl-\) arrives, we suspend and dump the
31 * status of all threads.
35 explicit SignalCatcher(const std::string& stack_trace_file);
38 void HandleSigQuit() REQUIRES(!Locks::mutator_lock_, !Locks::thread_list_lock_,
39 !Locks::thread_suspend_count_lock_);
43 // NO_THREAD_SAFETY_ANALYSIS for static function calling into member function with excludes lock.
44 static void* Run(void* arg) NO_THREAD_SAFETY_ANALYSIS;
47 void Output(const std::string& s);
48 void SetHaltFlag(bool new_value) REQUIRES(!lock_);
49 bool ShouldHalt() REQUIRES(!lock_);
50 int WaitForSignal(Thread* self, SignalSet& signals) REQUIRES(!lock_);
52 std::string stack_trace_file_;
54 mutable Mutex lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
55 ConditionVariable cond_ GUARDED_BY(lock_);
56 bool halt_ GUARDED_BY(lock_);
57 pthread_t pthread_ GUARDED_BY(lock_);
58 Thread* thread_ GUARDED_BY(lock_);
63 #endif // ART_RUNTIME_SIGNAL_CATCHER_H_