75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
#define _GNU_SOURCE
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <pthread.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <sys/syscall.h> /* For SYS_xxx definitions */
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#include <linux/futex.h>
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#include <sys/time.h>
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int passed = 0, sem = 0;
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pthread_t thr;
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void *util_thread(void *arg) {
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int rc;
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rc = syscall(732);
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if (rc == -1)
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fprintf(stderr, "CT13100 running on Linux CPU OK\n");
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else {
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fprintf(stderr, "CT13100 running on Linux CPU NG (%d)\n", rc);
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}
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retry:
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while (!passed) {
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asm volatile("pause" ::: "memory");
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}
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usleep(100000); /* debug messages via serial takes 0.05 sec */
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rc = syscall(__NR_futex, &sem, FUTEX_WAKE, 1, NULL, NULL, 0);
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if (rc != 1) {
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fprintf(stderr, "CT13101 FUTEX_WAKE NG (%d,%s)\n", rc, strerror(errno));
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} else {
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fprintf(stderr, "CT13101 FUTEX_WAKE OK\n");
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}
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return NULL;
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}
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int main(int argc, char **argv)
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{
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int rc;
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fprintf(stderr, "CT13001 futex START\n");
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rc = syscall(731, 1, NULL);
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if (rc) {
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fprintf(stderr, "util_indicate_clone rc=%d, errno=%d\n", rc, errno);
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fflush(stderr);
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}
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rc = pthread_create(&thr, NULL, util_thread, NULL);
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if (rc){
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fprintf(stderr, "pthread_create: %d\n", rc);
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exit(1);
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}
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fprintf(stderr, "CT13002 pthread_create OK\n");
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passed = 1;
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rc = syscall(__NR_futex, &sem, FUTEX_WAIT, 0, NULL, NULL, 0);
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if (rc != 0) {
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fprintf(stderr, "CT13003 FUTEX_WAIT NG (%s)\n", strerror(errno));
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} else {
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fprintf(stderr, "CT13003 FUTEX_WAIT OK\n");
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}
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pthread_join(thr, NULL);
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fprintf(stderr, "CT13004 pthread_join OK\n");
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fprintf(stderr, "CT13005 END\n");
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exit(0);
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}
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