a9973e913d
Previously, futex code of McKerenl was called by mccontrol, but there ware some problems with this method. (Mainly, location of McKernel image on memory) Call futex code in mcctrl instead of the one in McKernel image, giving the following benefits: 1. Not relying on shared kernel virtual address space with Linux any more 2. The cpu id store / retrieve is not needed and resulting in the code Change-Id: Ic40929b64a655b270c435859fa287fedb713ee5c refe: #1428
98 lines
1.9 KiB
C
98 lines
1.9 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 <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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#include <string.h>
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#include <signal.h>
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int passed = 0;
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pthread_t thr;
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unsigned long mem; /* delay functions issue ld/st instructions on this address */
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double nspw; /* nsec per work */
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/* Timer related macros */
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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() {
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asm volatile(
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"movq $0, %%rcx\n\t"
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"1:\t"
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"addq $1, %%rcx\n\t"
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"cmpq $99, %%rcx\n\t"
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"jle 1b\n\t"
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:
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:
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: "rcx", "cc");
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}
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static inline void bulk_fsw(unsigned long n) {
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int j;
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for (j = 0; j < (n); j++) {
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fixed_size_work();
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}
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}
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#define N_INIT 1000000
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void *util_thread(void *arg) {
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int rc;
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fwq(1000*1000);
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return NULL;
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}
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int
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main(int argc, char **argv)
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{
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int rc;
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pthread_attr_t attr;
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struct sigaction act;
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fwq_init();
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fprintf(stderr, "CT29001 INFO start (tid=%d)\n", syscall(__NR_gettid));
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rc = syscall(731, 1, NULL);
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if (rc) {
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fprintf(stderr, "CT29002 INFO uti not supported (rc=%d, errno=%d)\n", rc, errno);
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fflush(stderr);
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}
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rc = pthread_attr_init(&attr);
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if (rc){
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fprintf(stderr, "pthread_attr_init: %d\n", rc);
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exit(1);
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}
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#if 1
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rc = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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if (rc){
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fprintf(stderr, "pthread_attr_setdetachstate: %d\n", rc);
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exit(1);
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}
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#endif
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rc = pthread_create(&thr, &attr, 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, "CT29003 pthread_create OK\n");
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fwq(100*1000*1000);
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#if 0
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pthread_join(thr, NULL);
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fprintf(stderr, "CT29004 pthread_join OK\n");
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#endif
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exit(0);
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}
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