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Diffstat (limited to 'test/nptl/tst-cpuclock1.c')
-rw-r--r--test/nptl/tst-cpuclock1.c306
1 files changed, 0 insertions, 306 deletions
diff --git a/test/nptl/tst-cpuclock1.c b/test/nptl/tst-cpuclock1.c
deleted file mode 100644
index 9d68ec520..000000000
--- a/test/nptl/tst-cpuclock1.c
+++ /dev/null
@@ -1,306 +0,0 @@
-/* Test program for process CPU clocks.
- Copyright (C) 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <signal.h>
-#include <sys/wait.h>
-
-/* This function is intended to rack up both user and system time. */
-static void
-chew_cpu (void)
-{
- 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);
- if (getppid () == 1)
- _exit (2);
- }
-}
-
-static int
-do_test (void)
-{
- int result = 0;
- clockid_t cl;
- int e;
- pid_t dead_child, child;
-
- /* Fork a child and let it die, to give us a PID known not be valid
- (assuming PIDs don't wrap around during the test). */
- {
- dead_child = fork ();
- if (dead_child == 0)
- _exit (0);
- if (dead_child < 0)
- {
- perror ("fork");
- return 1;
- }
- int x;
- if (wait (&x) != dead_child)
- {
- perror ("wait");
- return 2;
- }
- }
-
- /* POSIX says we should get ESRCH for this. */
- e = clock_getcpuclockid (dead_child, &cl);
- if (e != ENOSYS && e != ESRCH && e != EPERM)
- {
- printf ("clock_getcpuclockid on dead PID %d => %s\n",
- dead_child, strerror (e));
- result = 1;
- }
-
- /* Now give us a live child eating up CPU time. */
- child = fork ();
- if (child == 0)
- {
- chew_cpu ();
- _exit (1);
- }
- if (child < 0)
- {
- perror ("fork");
- return 1;
- }
-
- e = clock_getcpuclockid (child, &cl);
- if (e == EPERM)
- {
- puts ("clock_getcpuclockid does not support other processes");
- goto done;
- }
- if (e != 0)
- {
- printf ("clock_getcpuclockid on live PID %d => %s\n",
- child, strerror (e));
- result = 1;
- goto done;
- }
-
- const clockid_t child_clock = cl;
- struct timespec res;
- if (clock_getres (child_clock, &res) < 0)
- {
- printf ("clock_getres on live PID %d clock %lx => %s\n",
- child, (unsigned long int) child_clock, strerror (errno));
- result = 1;
- goto done;
- }
- printf ("live PID %d clock %lx resolution %lu.%.9lu\n",
- child, (unsigned long int) child_clock, res.tv_sec, res.tv_nsec);
-
- struct timespec before, after;
- if (clock_gettime (child_clock, &before) < 0)
- {
- printf ("clock_gettime on live PID %d clock %lx => %s\n",
- child, (unsigned long int) child_clock, strerror (errno));
- result = 1;
- goto done;
- }
- printf ("live PID %d before sleep => %lu.%.9lu\n",
- child, before.tv_sec, before.tv_nsec);
-
- struct timespec sleeptime = { .tv_nsec = 500000000 };
- nanosleep (&sleeptime, NULL);
-
- if (clock_gettime (child_clock, &after) < 0)
- {
- printf ("clock_gettime on live PID %d clock %lx => %s\n",
- child, (unsigned long int) child_clock, strerror (errno));
- result = 1;
- goto done;
- }
- printf ("live PID %d after sleep => %lu.%.9lu\n",
- child, after.tv_sec, after.tv_nsec);
-
- struct timespec diff = { .tv_sec = after.tv_sec - before.tv_sec,
- .tv_nsec = after.tv_nsec - before.tv_nsec };
- if (diff.tv_nsec < 0)
- {
- --diff.tv_sec;
- diff.tv_nsec += 1000000000;
- }
- if (diff.tv_sec != 0
- || diff.tv_nsec > 600000000
- || diff.tv_nsec < 100000000)
- {
- printf ("before - after %lu.%.9lu outside reasonable range\n",
- diff.tv_sec, diff.tv_nsec);
- result = 1;
- }
-
- sleeptime.tv_nsec = 100000000;
- e = clock_nanosleep (child_clock, 0, &sleeptime, NULL);
- if (e == EINVAL || e == ENOTSUP || e == ENOSYS)
- {
- printf ("clock_nanosleep not supported for other process clock: %s\n",
- strerror (e));
- }
- else if (e != 0)
- {
- printf ("clock_nanosleep on other process clock: %s\n", strerror (e));
- result = 1;
- }
- else
- {
- struct timespec afterns;
- if (clock_gettime (child_clock, &afterns) < 0)
- {
- printf ("clock_gettime on live PID %d clock %lx => %s\n",
- child, (unsigned long int) child_clock, strerror (errno));
- result = 1;
- }
- else
- {
- struct timespec d = { .tv_sec = afterns.tv_sec - after.tv_sec,
- .tv_nsec = afterns.tv_nsec - after.tv_nsec };
- if (d.tv_nsec < 0)
- {
- --d.tv_sec;
- d.tv_nsec += 1000000000;
- }
- if (d.tv_sec > 0
- || d.tv_nsec < sleeptime.tv_nsec
- || d.tv_nsec > sleeptime.tv_nsec * 2)
- {
- printf ("nanosleep time %lu.%.9lu outside reasonable range\n",
- d.tv_sec, d.tv_nsec);
- result = 1;
- }
- }
- }
-
- if (kill (child, SIGKILL) != 0)
- {
- perror ("kill");
- result = 2;
- goto done;
- }
-
- /* Wait long enough to let the child finish dying. */
-
- sleeptime.tv_nsec = 200000000;
- nanosleep (&sleeptime, NULL);
-
- struct timespec dead;
- if (clock_gettime (child_clock, &dead) < 0)
- {
- printf ("clock_gettime on dead PID %d clock %lx => %s\n",
- child, (unsigned long int) child_clock, strerror (errno));
- result = 1;
- goto done;
- }
- printf ("dead PID %d => %lu.%.9lu\n",
- child, dead.tv_sec, dead.tv_nsec);
-
- diff.tv_sec = dead.tv_sec - after.tv_sec;
- diff.tv_nsec = dead.tv_nsec - after.tv_nsec;
- if (diff.tv_nsec < 0)
- {
- --diff.tv_sec;
- diff.tv_nsec += 1000000000;
- }
- if (diff.tv_sec != 0 || diff.tv_nsec > 200000000)
- {
- printf ("dead - after %lu.%.9lu outside reasonable range\n",
- diff.tv_sec, diff.tv_nsec);
- result = 1;
- }
-
- /* Now reap the child and verify that its clock is no longer valid. */
- {
- int x;
- if (waitpid (child, &x, 0) != child)
- {
- perror ("waitpid");
- result = 1;
- }
- }
-
- if (clock_gettime (child_clock, &dead) == 0)
- {
- printf ("clock_gettime on reaped PID %d clock %lx => %lu%.9lu\n",
- child, (unsigned long int) child_clock,
- dead.tv_sec, dead.tv_nsec);
- result = 1;
- }
- else
- {
- if (errno != EINVAL)
- result = 1;
- printf ("clock_gettime on reaped PID %d clock %lx => %s\n",
- child, (unsigned long int) child_clock, strerror (errno));
- }
-
- if (clock_getres (child_clock, &dead) == 0)
- {
- printf ("clock_getres on reaped PID %d clock %lx => %lu%.9lu\n",
- child, (unsigned long int) child_clock,
- dead.tv_sec, dead.tv_nsec);
- result = 1;
- }
- else
- {
- if (errno != EINVAL)
- result = 1;
- printf ("clock_getres on reaped PID %d clock %lx => %s\n",
- child, (unsigned long int) child_clock, strerror (errno));
- }
-
- return result;
-
- done:
- {
- if (kill (child, SIGKILL) != 0 && errno != ESRCH)
- {
- perror ("kill");
- return 2;
- }
- int x;
- if (waitpid (child, &x, 0) != child && errno != ECHILD)
- {
- perror ("waitpid");
- return 2;
- }
- }
-
- return result;
-}
-
-
-#define TIMEOUT 5
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 19:50:37 +0000