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https://github.com/mirror/tinycc.git
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72277967ff
- configure/Makefile : cleanup, really use CC_NAME - tccasm.c : remove C99 construct that MSVC doesn't compile - arm-gen.c, x86_64-gen.c, riscv64-gen.c, tccmacho.c : ditto - arm64-gen.c: commit383acf8effwrote: "Instead of a cast, it would be better to pass the exact type." It is true that there are better solutions but it is not passing the exact type (I think). - tcctest.c: revert "fix cast test for clang"03646ad46fthis obviously wants to test non-portable conversions - 114_bound_signal.test: clock_nanosleep is too new for older linuxes, just use sleep() instead
110 lines
2.0 KiB
C
110 lines
2.0 KiB
C
#include <stdio.h>
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#include <pthread.h>
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#include <semaphore.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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#include <setjmp.h>
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static volatile int run = 1;
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static int dummy[10];
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static sem_t sem;
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static void
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add (void)
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{
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int i;
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for (i = 0; i < (sizeof(dummy)/sizeof(dummy[0])); i++) {
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dummy[i]++;
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}
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}
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static void *
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high_load (void *unused)
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{
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while (run) {
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add();
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}
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return NULL;
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}
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static void *
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do_signal (void *unused)
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{
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while (run) {
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kill (getpid(), SIGUSR1);
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while (sem_wait(&sem) < 0 && errno == EINTR);
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}
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return NULL;
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}
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/* See tcc-doc.info */
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#ifdef __BOUNDS_CHECKING_ON
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extern void __bound_checking (int no_check);
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#define BOUNDS_CHECKING_OFF __bound_checking(1)
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#define BOUNDS_CHECKING_ON __bound_checking(-1)
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#else
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#define BOUNDS_CHECKING_OFF
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#define BOUNDS_CHECKING_ON
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#endif
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static void real_signal_handler(int sig)
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{
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add();
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sem_post (&sem);
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}
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static void signal_handler(int sig)
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{
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BOUNDS_CHECKING_OFF;
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real_signal_handler(sig);
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BOUNDS_CHECKING_ON;
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}
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int
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main (void)
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{
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int i;
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pthread_t id1, id2;
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struct sigaction act;
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sigjmp_buf sj;
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sigset_t m;
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memset (&act, 0, sizeof (act));
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act.sa_handler = signal_handler;
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act.sa_flags = 0;
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sigemptyset (&act.sa_mask);
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sigaction (SIGUSR1, &act, NULL);
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sem_init (&sem, 1, 0);
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pthread_create(&id1, NULL, high_load, NULL);
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pthread_create(&id2, NULL, do_signal, NULL);
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printf ("start\n");
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sleep(1);
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run = 0;
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printf ("end\n");
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pthread_join(id1, NULL);
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pthread_join(id2, NULL);
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sem_destroy (&sem);
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sigemptyset (&m);
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sigprocmask (SIG_SETMASK, &m, NULL);
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if (sigsetjmp (sj, 0) == 0)
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{
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sigaddset (&m, SIGUSR1);
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sigprocmask (SIG_SETMASK, &m, NULL);
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siglongjmp (sj, 1);
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printf ("failed");
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return 1;
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}
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sigprocmask (SIG_SETMASK, NULL, &m);
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if (!sigismember (&m, SIGUSR1))
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printf ("failed");
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return 0;
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}
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