64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
#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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#ifdef __cplusplus
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extern "C" {
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#endif
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#define WNOHANG 1
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#define WUNTRACED 2
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/* A status looks like:
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<2 bytes info> <2 bytes code>
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<code> == 0, child has exited, info is the exit value
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<code> == 1..7e, child has exited, info is the signal number.
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<code> == 7f, child has stopped, info was the signal number.
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<code> == 80, there was a core dump.
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*/
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#define WIFEXITED(w) (((w) & 0xff) == 0)
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#define WIFSIGNALED(w) (((w) & 0x7f) > 0 && (((w) & 0x7f) < 0x7f))
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#define WIFSTOPPED(w) (((w) & 0xff) == 0x7f)
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#define WEXITSTATUS(w) (((w) >> 8) & 0xff)
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#define WTERMSIG(w) ((w) & 0x7f)
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#define WSTOPSIG WEXITSTATUS
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pid_t wait (int *);
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pid_t waitpid (pid_t, int *, int);
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pid_t wait3 (int *__status, int __options, struct rusage *__rusage);
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pid_t wait4 (pid_t __pid, int *__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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#endif
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