94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/* sys/wait.h
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Copyright 1997, 1998, 2001, 2002, 2003, 2004, 2006, 2011 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _SYS_WAIT_H
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#define _SYS_WAIT_H
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#include <sys/types.h>
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#include <sys/resource.h>
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#include <cygwin/wait.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef __INSIDE_CYGWIN__
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typedef int *__wait_status_ptr_t;
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#elif defined(__cplusplus)
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/* Attribute __transparent_union__ is only supported for C. */
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typedef void *__wait_status_ptr_t;
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#else /* !__INSIDE_CYGWIN__ && !__cplusplus */
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/* Allow `int' and `union wait' for the status. */
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typedef union
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{
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int *__int_ptr;
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union wait *__union_wait_ptr;
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} __wait_status_ptr_t __attribute__ ((__transparent_union__));
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#endif /* __INSIDE_CYGWIN__ */
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pid_t wait (__wait_status_ptr_t __status);
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pid_t waitpid (pid_t __pid, __wait_status_ptr_t __status, int __options);
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pid_t wait3 (__wait_status_ptr_t __status, int __options, struct rusage *__rusage);
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pid_t wait4 (pid_t __pid, __wait_status_ptr_t __status, int __options, struct rusage *__rusage);
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union wait
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{
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int w_status;
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struct
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{
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unsigned int __w_termsig:7; /* Terminating signal. */
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unsigned int __w_coredump:1; /* Set if dumped core. */
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unsigned int __w_retcode:8; /* Return code if exited normally. */
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unsigned int:16;
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} __wait_terminated;
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struct
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{
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unsigned int __w_stopval:8; /* W_STOPPED if stopped. */
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unsigned int __w_stopsig:8; /* Stopping signal. */
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unsigned int:16;
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} __wait_stopped;
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};
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#define w_termsig __wait_terminated.__w_termsig
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#define w_coredump __wait_terminated.__w_coredump
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#define w_retcode __wait_terminated.__w_retcode
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#define w_stopsig __wait_stopped.__w_stopsig
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#define w_stopval __wait_stopped.__w_stopval
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#ifdef __cplusplus
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}
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#endif
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/* Used in cygwin/wait.h, redefine to accept `int' and `union wait'. */
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#undef __wait_status_to_int
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#ifdef __cplusplus
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extern "C++" {
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inline int __wait_status_to_int (int __status)
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{ return __status; }
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inline int __wait_status_to_int (const union wait & __status)
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{ return __status.w_status; }
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}
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#else /* !__cplusplus */
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#define __wait_status_to_int(__status) (__extension__ \
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(((union { __typeof(__status) __in; int __out; }) { .__in = (__status) }).__out))
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#endif /* __cplusplus */
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#endif /* _SYS_WAIT_H */
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