1 #ifndef _SYS_WAIT_H 2 #define _SYS_WAIT_H 3 4 #include <sys/types.h> 5 #include <sys/resource.h> 6 7 #ifdef __cplusplus 8 extern "C" { 9 #endif 10 11 #define WNOHANG 1 12 #define WUNTRACED 2 13 14 /* A status looks like: 15 <2 bytes info> <2 bytes code> 16 17 <code> == 0, child has exited, info is the exit value 18 <code> == 1..7e, child has exited, info is the signal number. 19 <code> == 7f, child has stopped, info was the signal number. 20 <code> == 80, there was a core dump. 21 */ 22 23 #define WIFEXITED(w) (((w) & 0xff) == 0) 24 #define WIFSIGNALED(w) (((w) & 0x7f) > 0 && (((w) & 0x7f) < 0x7f)) 25 #define WIFSTOPPED(w) (((w) & 0xff) == 0x7f) 26 #define WEXITSTATUS(w) (((w) >> 8) & 0xff) 27 #define WTERMSIG(w) ((w) & 0x7f) 28 #define WSTOPSIG WEXITSTATUS 29 30 pid_t wait (int *); 31 pid_t waitpid (pid_t, int *, int); 32 pid_t wait3 (int *__status, int __options, struct rusage *__rusage); 33 pid_t wait4 (pid_t __pid, int *__status, int __options, struct rusage *__rusage); 34 35 union wait 36 { 37 int w_status; 38 struct 39 { 40 unsigned int __w_termsig:7; /* Terminating signal. */ 41 unsigned int __w_coredump:1; /* Set if dumped core. */ 42 unsigned int __w_retcode:8; /* Return code if exited normally. */ 43 unsigned int:16; 44 } __wait_terminated; 45 struct 46 { 47 unsigned int __w_stopval:8; /* W_STOPPED if stopped. */ 48 unsigned int __w_stopsig:8; /* Stopping signal. */ 49 unsigned int:16; 50 } __wait_stopped; 51 }; 52 53 #define w_termsig __wait_terminated.__w_termsig 54 #define w_coredump __wait_terminated.__w_coredump 55 #define w_retcode __wait_terminated.__w_retcode 56 #define w_stopsig __wait_stopped.__w_stopsig 57 #define w_stopval __wait_stopped.__w_stopval 58 59 #ifdef __cplusplus 60 }; 61 #endif 62 63 #endif |