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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [sim/] [testsuite/] [sim/] [cris/] [c/] [clone1.c] - Rev 227
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/* #notarget: cris*-*-elf #output: got: a\nthen: bc\nexit: 0\n */ /* This is a very limited subset of what ex1.c does; we just check that thread creation (clone syscall) and pipe writes and reads work. */ #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sched.h> #include <signal.h> #include <sys/types.h> #include <sys/wait.h> int pip[2]; int process (void *arg) { char *s = arg; if (write (pip[1], s+2, 1) != 1) abort (); if (write (pip[1], s+1, 1) != 1) abort (); if (write (pip[1], s, 1) != 1) abort (); return 0; } int main (void) { int retcode; int pid; int st; long stack[16384]; char buf[10] = {0}; retcode = pipe (pip); if (retcode != 0) { fprintf (stderr, "Bad pipe %d\n", retcode); abort (); } pid = clone (process, (char *) stack + sizeof (stack) - 64, (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND) | SIGCHLD, "cba"); if (pid <= 0) { fprintf (stderr, "Bad clone %d\n", pid); abort (); } if ((retcode = read (pip[0], buf, 1)) != 1) { fprintf (stderr, "Bad read 1: %d\n", retcode); abort (); } printf ("got: %c\n", buf[0]); retcode = read (pip[0], buf, 2); if (retcode == 1) { retcode = read (pip[0], buf+1, 1); if (retcode != 1) { fprintf (stderr, "Bad read 1.5: %d\n", retcode); abort (); } retcode = 2; } if (retcode != 2) { fprintf (stderr, "Bad read 2: %d\n", retcode); abort (); } printf ("then: %s\n", buf); retcode = wait4 (-1, &st, WNOHANG | __WCLONE, NULL); if (retcode != pid || !WIFEXITED (st)) { fprintf (stderr, "Bad wait %d %x\n", retcode, st); abort (); } printf ("exit: %d\n", WEXITSTATUS (st)); return 0; }