122 lines
2.7 KiB
C
122 lines
2.7 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 <unistd.h>
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#include <sys/syscall.h>
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#include <sys/mman.h>
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#include <signal.h>
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pthread_mutex_t mutex;
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int owned;
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pthread_t thr;
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#define TS2NS(sec, nsec) ((unsigned long)(sec) * 1000000000ULL + (unsigned long)(nsec))
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static inline void FIXED_SIZE_WORK(unsigned long *ptr) {
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asm volatile("movq %0, %%rax\n\t"
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"addq $1, %%rax\n\t" \
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"movq %%rax, %0\n\t" \
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: "+rm" (*ptr) \
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: \
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: "rax", "cc", "memory"); \
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}
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static inline void BULK_FSW(unsigned long n, unsigned long *ptr) {
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int j;
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for (j = 0; j < (n); j++) {
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FIXED_SIZE_WORK(ptr);
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}
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}
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double nspw; /* nsec per work */
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#define N_INIT 10000000
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void fwq_init(unsigned long *mem) {
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struct timespec start, end;
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unsigned long nsec;
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int i;
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clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start);
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BULK_FSW(N_INIT, mem);
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clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
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nsec = (TS2NS(end.tv_sec, end.tv_nsec) - TS2NS(start.tv_sec, start.tv_nsec));
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nspw = nsec / (double)N_INIT;
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printf("nsec=%ld, nspw=%f\n", nsec, nspw);
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}
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void fwq(unsigned long delay_nsec, unsigned long* mem) {
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//printf("delay_nsec=%ld,count=%f\n", delay_nsec, delay_nsec / nspw);
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BULK_FSW(delay_nsec / nspw, mem);
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}
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void *
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util_thread(void *arg)
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{
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int rc;
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unsigned long mem;
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rc = syscall(732);
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if (rc == -1)
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fprintf(stderr, "CT14100 running on Linux OK\n");
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else {
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fprintf(stderr, "CT14100 running on Linux NG (%d)\n", rc);
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}
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errno = 0;
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fwq(500 * 1000 * 1000UL, &mem); /* Sending debug messages through serial takes 0.05 sec */
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pthread_mutex_lock(&mutex);
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if (owned) {
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fprintf(stderr, "CT14101 lock second OK\n");
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} else {
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fprintf(stderr, "CT14101 lock second NG\n");
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}
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owned = 1;
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pthread_mutex_unlock(&mutex);
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return NULL;
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}
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int main(int argc, char **argv) {
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int rc;
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unsigned long mem;
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pthread_mutex_init(&mutex, NULL);
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fwq_init(&mem);
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fprintf(stderr, "CT14001 futex START\n");
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rc = syscall(731, 1, NULL);
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if (rc) {
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fprintf(stderr, "CT14002 util_indicate_clone NG (rc=%d, errno=%d)\n", rc, errno);
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fflush(stderr);
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} else {
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fprintf(stderr, "CT14002 util_indicate_clone OK\n");
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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, "CT14003 pthread_create OK\n");
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pthread_mutex_lock(&mutex);
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if (!owned) {
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fprintf(stderr, "CT14004 lock first OK\n");
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} else {
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fprintf(stderr, "CT14004 lock first NG\n");
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}
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owned = 1;
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fwq(2000 * 1000 * 1000UL, &mem); /* Need 2 sec to make child sleep */
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pthread_mutex_unlock(&mutex);
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pthread_join(thr, NULL);
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fprintf(stderr, "CT14005 pthread_join OK\n");
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fprintf(stderr, "CT14006 END\n");
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exit(0);
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}
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