91 lines
1.6 KiB
C
91 lines
1.6 KiB
C
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/*++
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Copyright (c) 1989-1996 Microsoft Corporation
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Module Name:
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wait.h
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Abstract:
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This module contains the symbolic constants, macros, and structures needed to
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support wait, waitpid, and _exit in in IEEE P1003.1/Draft 13.
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--*/
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#ifndef _SYS_WAIT_
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#define _SYS_WAIT_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* wait options
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*/
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#define WNOHANG 0x00000001
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#define WUNTRACED 0x00000002
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/*
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* Structure of wait status value
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*
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* Bit 32 - 0 if process terminated normally
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* 1 if process was signaled
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* Bit 31 - 0 if process is not stopped
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* 1 if process is stopped
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* Bits 0-7 exit status or signal number
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*/
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/*
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* Evaluate to non-zero if process terminated normally (by calling _exit)
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*/
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#define WIFEXITED(stat_val) \
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(((stat_val) & 0xff) == 0)
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/*
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* Returns the low-order 8 bits of the status argument passed to _exit
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*/
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#define WEXITSTATUS(stat_val) \
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(((stat_val) & 0xff00) >> 8)
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/*
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* Evaluate to non-zero if process terminated due to receipt of a signal
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* that was not caught
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*/
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#define WIFSIGNALED(stat_val) \
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(!WIFSTOPPED(stat_val) && !WIFEXITED(stat_val))
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/*
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* Returns the signal number of the signal that caused the process to terminate
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*/
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#define WTERMSIG(stat_val) \
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((stat_val) & 0xff)
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/*
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* Evaluate to non-zero if process is currently stopped
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*/
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#define WIFSTOPPED(stat_val) \
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(((stat_val) & 0xff) == 0177)
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/*
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* Returns the signal number of the signal that caused the process to stop
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*/
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#define WSTOPSIG(stat_val) \
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(((stat_val) & 0xff00) >> 8)
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pid_t __cdecl wait(int *);
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pid_t __cdecl waitpid(pid_t, int *, int);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_WAIT_ */
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