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/* COVERAGE: fork wait4 getpid getppid gettid */
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/syscall.h>
int main ()
{
pid_t child;
int status;
child = fork();
#if !defined(__ia64__)
// Sometimes glibc substitutes a clone() call for a fork()
// call (verified with strace).
//staptest// [[[[fork ()!!!!clone (.+, XXXX, XXXX, XXXX)]]]] = NNNN
#else
// On RHEL5 ia64, fork() gets turned into clone2().
//staptest// [[[[fork ()!!!!clone2 (.+, XXXX, XXXX, XXXX, XXXX)]]]] = NNNN
#endif
if (!child) {
int i = 0xfffff;
while (i > 0) i--;
exit(0);
}
wait4(child, &status, WNOHANG, NULL);
//staptest// wait4 (NNNN, XXXX, WNOHANG, XXXX) = NNNN
// we need syscall() otherwise glibc would eliminate the system call
syscall(__NR_getpid);
//staptest// getpid () = NNNN
getppid();
//staptest// getppid () = NNNN
// Note: There is no glibc wrapper for this system call
syscall(__NR_gettid);
//staptest// gettid () = NNNN
return 0;
}
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