lib/fatal-signal.h

   1 /*
   2  * Copyright (c) 2008, 2009, 2010, 2013 Nicira, Inc.
   3  *
   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:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16
  17 #ifndef FATAL_SIGNAL_H
  18 #define FATAL_SIGNAL_H 1
  19
  20 #ifndef _WIN32
  21 #include <signal.h>
  22 #endif
  23 #include <stdbool.h>
  24
  25 /* Basic interface. */
  26 void fatal_signal_init(void);
  27 void fatal_signal_add_hook(void (*hook_cb)(void *aux),
  28                            void (*cancel_cb)(void *aux), void *aux,
  29                            bool run_at_exit);
  30 void fatal_signal_fork(void);
  31 void fatal_signal_run(void);
  32 void fatal_signal_wait(void);
  33 void fatal_ignore_sigpipe(void);
  34 void fatal_signal_atexit_handler(void);
  35
  36 /* Convenience functions for unlinking files upon termination.
  37  *
  38  * These functions also unlink the files upon normal process termination via
  39  * exit(). */
  40 void fatal_signal_add_file_to_unlink(const char *);
  41 void fatal_signal_remove_file_to_unlink(const char *);
  42 int fatal_signal_unlink_file_now(const char *);
  43
  44 /* Interface for other code that catches one of our signals and needs to pass
  45  * it through. */
  46 void fatal_signal_handler(int sig_nr);
  47
  48 #ifndef _WIN32
  49 void fatal_signal_block(sigset_t *prev_mask);
  50 #endif
  51
  52 #endif /* fatal-signal.h */