headers/private/system/signal_defs.h

   1 /*
   2  * Copyright 2011, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _SYSTEM_SIGNAL_DEFS_H
   6 #define _SYSTEM_SIGNAL_DEFS_H
   7
   8
   9 #include <signal.h>
  10 #include <unistd.h>
  11
  12
  13 // The total number of signals a process may have queued at receivers at any
  14 // time.
  15 #define MAX_QUEUED_SIGNALS                      _POSIX_SIGQUEUE_MAX
  16
  17 // realtime signal number range
  18 #define SIGNAL_REALTIME_MIN                     33
  19 #define SIGNAL_REALTIME_MAX                     40
  20
  21 // greatest actually supported signal number
  22 #define MAX_SIGNAL_NUMBER                       SIGNAL_REALTIME_MAX
  23
  24 // additional send_signal_etc() flags
  25 #define SIGNAL_FLAG_QUEUING_REQUIRED            (0x10000)
  26         // force signal queuing, i.e. fail instead of falling back to unqueued
  27         // signals, when queuing isn't possible
  28 #define SIGNAL_FLAG_SEND_TO_THREAD                      (0x20000)
  29         // interpret the the given ID as a thread_id rather than a team_id (syscall
  30         // use only)
  31
  32 // additional sigaction::sa_flags flag
  33 #define SA_BEOS_COMPATIBLE_HANDLER              0x80000000
  34         // BeOS compatible signal handler, i.e. the vregs argument is passed
  35         // per-value, not per-pointer
  36
  37 #define SIGNAL_TO_MASK(signal)  ((sigset_t)1 << ((signal) - 1))
  38 #define SIGNAL_RANGE_TO_MASK(first, last)       \
  39         ((((SIGNAL_TO_MASK(last) - 1) << 1) | 1) & ~(SIGNAL_TO_MASK(first) - 1))
  40         // Note: The last mask computation looks that way to avoid an overflow for
  41         // last == 64.
  42
  43 #endif  /* _SYSTEM_SIGNAL_DEFS_H */