headers/posix/sys/wait.h

   1 /*
   2  * Copyright 2004-2011, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _SYS_WAIT_H
   6 #define _SYS_WAIT_H
   7
   8
   9 #include <sys/types.h>
  10 #include <signal.h>
  11
  12
  13 /* waitpid()/waitid() options */
  14 #define WNOHANG         0x01
  15 #define WUNTRACED       0x02
  16 #define WCONTINUED      0x04
  17 #define WEXITED         0x08
  18 #define WSTOPPED        0x10
  19 #define WNOWAIT         0x20
  20
  21 /* macros to interprete wait()/waitpid() status */
  22 #define WIFEXITED(value)        (((value) & ~0xff) == 0)
  23 #define WEXITSTATUS(value)      ((value) & 0xff)
  24 #define WIFSIGNALED(value)      ((((value) >> 8) & 0xff) != 0)
  25 #define WTERMSIG(value)         (((value) >> 8) & 0xff)
  26 #define WIFSTOPPED(value)       ((((value) >> 16) & 0xff) != 0)
  27 #define WSTOPSIG(value)         (((value) >> 16) & 0xff)
  28 #define WIFCORED(value)         ((value) & 0x10000)
  29 #define WIFCONTINUED(value)     ((value) & 0x20000)
  30
  31 /* ID types for waitid() */
  32 typedef enum {
  33         P_ALL,          /* wait for any children, ignore ID */
  34         P_PID,          /* wait for the child whose process ID matches */
  35         P_PGID          /* wait for any child whose process group ID matches */
  36 } idtype_t;
  37
  38
  39 #ifdef __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 extern pid_t wait(int *_status);
  44 extern pid_t waitpid(pid_t pid, int *_status, int options);
  45 extern int waitid(idtype_t idType, id_t id, siginfo_t *info, int options);
  46
  47 #ifdef __cplusplus
  48 }
  49 #endif
  50
  51 #endif  /* _SYS_WAIT_H */