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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [gdb/] [testsuite/] [gdb.threads/] [sigthread.c] - Rev 330
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/* Test case for C-c sent to threads with pending signals. Before I even get there, creating a thread and sending it a signal before it has a chance to run leads to an internal error in GDB. We need to record that there's a pending SIGSTOP, so that we'll ignore it later, and pass the current signal back to the thread. The fork/vfork case has similar trouble but that's even harder to get around. We may need to send a SIGCONT to cancel out the SIGSTOP. Different kernels may do different things if the thread is stopped by ptrace and sent a SIGSTOP. */ #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <pthread.h> #include <signal.h> /* Loop long enough for GDB to send a few signals of its own, but don't hang around eating CPU forever if something goes wrong during testing. */ #define NSIGS 10000000 pthread_barrier_t barrier; void handler (int sig) { ; } pthread_t main_thread; pthread_t child_thread, child_thread_two; void * child_two (void *arg) { int i; pthread_barrier_wait (&barrier); for (i = 0; i < NSIGS; i++) pthread_kill (child_thread, SIGUSR1); } void * thread_function (void *arg) { int i; pthread_barrier_wait (&barrier); for (i = 0; i < NSIGS; i++) pthread_kill (child_thread_two, SIGUSR2); } int main() { int i; signal (SIGUSR1, handler); signal (SIGUSR2, handler); pthread_barrier_init (&barrier, NULL, 3); main_thread = pthread_self (); pthread_create (&child_thread, NULL, thread_function, NULL); pthread_create (&child_thread_two, NULL, child_two, NULL); pthread_barrier_wait (&barrier); for (i = 0; i < NSIGS; i++) pthread_kill (child_thread_two, SIGUSR1); pthread_join (child_thread, NULL); exit (0); }