#include <sched.h> #include <signal.h> #include <string.h> #include <stdio.h> #include <unistd.h> #include <sys/types.h> #include <sys/wait.h> #include <bits/stackinfo.h> #ifndef TEST_CLONE_FLAGS #define TEST_CLONE_FLAGS 0 #endif static int sig; static int f (void *a) { puts ("in f"); union sigval sival; sival.sival_int = getpid (); printf ("pid = %d\n", sival.sival_int); if (sigqueue (getppid (), sig, sival) != 0) return 1; return 0; } static int do_test (void) { int mypid = getpid (); sig = SIGRTMIN; sigset_t ss; sigemptyset (&ss); sigaddset (&ss, sig); if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0) { printf ("sigprocmask failed: %m\n"); return 1; } #ifdef __ia64__ extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base, size_t __child_stack_size, int __flags, void *__arg, ...); char st[256 * 1024] __attribute__ ((aligned)); pid_t p = __clone2 (f, st, sizeof (st), TEST_CLONE_FLAGS, 0); #else char st[128 * 1024] __attribute__ ((aligned)); # if _STACK_GROWS_DOWN pid_t p = clone (f, st + sizeof (st), TEST_CLONE_FLAGS, 0); # elif _STACK_GROWS_UP pid_t p = clone (f, st, TEST_CLONE_FLAGS, 0); # else # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP" # endif #endif if (p == -1) { printf("clone failed: %m\n"); return 1; } printf ("new thread: %d\n", (int) p); siginfo_t si; do if (sigwaitinfo (&ss, &si) < 0) { printf("sigwaitinfo failed: %m\n"); kill (p, SIGKILL); return 1; } while (si.si_signo != sig || si.si_code != SI_QUEUE); int e; if (waitpid (p, &e, __WCLONE) != p) { puts ("waitpid failed"); kill (p, SIGKILL); return 1; } if (!WIFEXITED (e)) { if (WIFSIGNALED (e)) printf ("died from signal %s\n", strsignal (WTERMSIG (e))); else puts ("did not terminate correctly"); return 1; } if (WEXITSTATUS (e) != 0) { printf ("exit code %d\n", WEXITSTATUS (e)); return 1; } if (si.si_int != (int) p) { printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int); kill (p, SIGKILL); return 1; } if (si.si_pid != p) { printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid); kill (p, SIGKILL); return 1; } if (getpid () != mypid) { puts ("my PID changed"); return 1; } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"