2 * Copyright 2013 Facebook, Inc.
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 FOLLY_SYMBOLIZER_SIGNALHANDLER_H_
18 #define FOLLY_SYMBOLIZER_SIGNALHANDLER_H_
22 namespace folly { namespace symbolizer {
25 * Install handler for fatal signals. The list of signals being handled is in
28 * The handler will dump signal and time information followed by a stack trace
29 * to stderr, and then call the callbacks registered below.
31 void installFatalSignalHandler();
34 * Add a callback to be run when receiving a fatal signal. They will also
35 * be called by LOG(FATAL) and abort() (as those raise SIGABRT internally).
37 * These callbacks must be async-signal-safe, so don't even think of using
38 * LOG(...) or printf or malloc / new or doing anything even remotely fun.
40 * All these fatal callback must be added before calling
41 * installFatalSignalCallbacks(), below.
43 typedef void (*SignalCallback)(void);
44 void addFatalSignalCallback(SignalCallback callback);
47 * Install the fatal signal callbacks; fatal signals will call these
48 * callbacks in the order in which they were added.
50 void installFatalSignalCallbacks();
55 #endif /* FOLLY_SYMBOLIZER_SIGNALHANDLER_H_ */