diff options
Diffstat (limited to 'rt/tst-cputimer2.c')
-rw-r--r-- | rt/tst-cputimer2.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/rt/tst-cputimer2.c b/rt/tst-cputimer2.c deleted file mode 100644 index 397d799..0000000 --- a/rt/tst-cputimer2.c +++ /dev/null @@ -1,83 +0,0 @@ -/* Tests for POSIX timer implementation using thread CPU clock. */ - -#include <unistd.h> - -#if _POSIX_THREADS && defined _POSIX_CPUTIME - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <time.h> -#include <pthread.h> - -static clockid_t worker_thread_clock; - -#define TEST_CLOCK worker_thread_clock -#define TEST_CLOCK_MISSING(clock) \ - (setup_test () ? "thread CPU clock timer support" : NULL) - -/* This function is intended to rack up both user and system time. */ -static void * -chew_cpu (void *arg) -{ - while (1) - { - static volatile char buf[4096]; - for (int i = 0; i < 100; ++i) - for (size_t j = 0; j < sizeof buf; ++j) - buf[j] = 0xaa; - int nullfd = open ("/dev/null", O_WRONLY); - for (int i = 0; i < 100; ++i) - for (size_t j = 0; j < sizeof buf; ++j) - buf[j] = 0xbb; - write (nullfd, (char *) buf, sizeof buf); - close (nullfd); - } - - return NULL; -} - -static int -setup_test (void) -{ - /* Test timers on a thread CPU clock by having a worker thread eating - CPU. First make sure we can make such timers at all. */ - - pthread_t th; - int e = pthread_create (&th, NULL, chew_cpu, NULL); - if (e != 0) - { - printf ("pthread_create: %s\n", strerror (e)); - exit (1); - } - - e = pthread_getcpuclockid (th, &worker_thread_clock); - if (e == EPERM || e == ENOENT || e == ENOTSUP) - { - puts ("pthread_getcpuclockid does not support other threads"); - return 1; - } - if (e != 0) - { - printf ("pthread_getcpuclockid: %s\n", strerror (e)); - exit (1); - } - - timer_t t; - if (timer_create (TEST_CLOCK, NULL, &t) != 0) - { - printf ("timer_create: %m\n"); - return 1; - } - timer_delete (t); - - return 0; -} - -#else -# define TEST_CLOCK_MISSING(clock) "process clocks" -#endif - -#include "tst-timer4.c" |