2 * Copyright 2017 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.
21 namespace folly { namespace symbolizer {
24 * Install handler for fatal signals. The list of signals being handled is in
27 * The handler will dump signal and time information followed by a stack trace
28 * to stderr, and then call the callbacks registered below.
30 void installFatalSignalHandler();
33 * Add a callback to be run when receiving a fatal signal. They will also
34 * be called by LOG(FATAL) and abort() (as those raise SIGABRT internally).
36 * These callbacks must be async-signal-safe, so don't even think of using
37 * LOG(...) or printf or malloc / new or doing anything even remotely fun.
39 * All these fatal callback must be added before calling
40 * installFatalSignalCallbacks(), below.
42 typedef void (*SignalCallback)(void);
43 void addFatalSignalCallback(SignalCallback callback);
46 * Install the fatal signal callbacks; fatal signals will call these
47 * callbacks in the order in which they were added.
49 void installFatalSignalCallbacks();