ntel-gpu-tools/tests/gem_fd_exhaustion.c
Daniel Vetter e624fa8a2e tests: sprinkle igt logging
All the cases that simply dump some debug information and couldn't be
converted to some of the fancier macros.

Some information output removed when it's redundant with the subtest
status.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-05-14 00:36:04 +02:00

95 lines
2.6 KiB
C

/*
* Copyright © 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Daniel Vetter <daniel.vetter@ffwll.ch>
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <fcntl.h>
#include <limits.h>
#include "drmtest.h"
#include "ioctl_wrappers.h"
#include "igt_aux.h"
#define FD_ARR_SZ 100
int fd_arr[FD_ARR_SZ];
igt_simple_main
{
int fd, i;
struct rlimit rlim;
unsigned nofile_rlim;
FILE *file_max = fopen("/proc/sys/fs/file-max", "r");
igt_assert(fscanf(file_max, "%u", &nofile_rlim) == 1);
fclose(file_max);
igt_info("System limit for open files is %u\n", nofile_rlim);
igt_assert(getrlimit(RLIMIT_NOFILE, &rlim) == 0);
rlim.rlim_cur = nofile_rlim;
rlim.rlim_max = nofile_rlim;
igt_assert(setrlimit(RLIMIT_NOFILE, &rlim) == 0);
fd = drm_open_any();
igt_assert(open("/dev/null", O_RDONLY) >= 0);
igt_fork(n, 1) {
igt_drop_root();
for (i = 0; ; i++) {
int tmp_fd = open("/dev/null", O_RDONLY);
uint32_t handle;
if (tmp_fd >= 0 && i < FD_ARR_SZ)
fd_arr[i] = tmp_fd;
handle = __gem_create(fd, 4096);
if (handle)
gem_close(fd, handle);
if (tmp_fd < 0) {
/* Ensure we actually hit the failure path ... */
igt_assert(handle == 0);
igt_info("fd exhaustion after %i rounds.\n", i);
break;
}
}
/* The child will free all the fds when exiting, so no need to
* clean up to mess to ensure that the parent can at least run
* the exit handlers. */
}
igt_waitchildren();
close(fd);
}