mirror of
https://github.com/tiagovignatti/intel-gpu-tools.git
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dfe942edec
This reverts commit bd927662fcfb1443c5982fb04cc694f78e1c8d53. It's bogus. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
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* Copyright (c) 2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*/
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#include <sys/ioctl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <pthread.h>
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#include "drmtest.h"
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#include "i915_drm.h"
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#include "intel_bufmgr.h"
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/* Testcase: check for flink/open vs. gem close races
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*
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* The gem flink open ioctl had a little race with gem close which could result
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* in the flink name and corresponding reference getting leaked.
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*/
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/* We want lockless and I'm to lazy to dig out an atomic libarary. On x86 this
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* works, too. */
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volatile int pls_die = 0;
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int fd;
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static void *thread_fn(void *p)
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{
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struct drm_gem_open open_struct;
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int ret;
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while (!pls_die) {
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memset(&open_struct, 0, sizeof(open_struct));
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open_struct.name = 1;
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ret = ioctl(fd, DRM_IOCTL_GEM_OPEN, &open_struct);
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if (ret == 0)
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gem_close(fd, open_struct.handle);
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else
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assert(errno == ENOENT);
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}
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return (void *)0;
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}
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int main(int argc, char **argv)
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{
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int num_threads;
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pthread_t *threads;
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int r, i;
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void *status;
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drmtest_skip_on_simulation();
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num_threads = sysconf(_SC_NPROCESSORS_ONLN) - 1;
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if (!num_threads)
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num_threads = 1;
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threads = calloc(num_threads, sizeof(pthread_t));
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fd = drm_open_any();
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assert(fd >= 0);
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for (i = 0; i < num_threads; i++) {
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r = pthread_create(&threads[i], NULL, thread_fn, NULL);
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assert(r == 0);
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}
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for (i = 0; i < 1000000; i++) {
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uint32_t handle;
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handle = gem_create(fd, 4096);
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gem_flink(fd, handle);
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gem_close(fd, handle);
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}
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pls_die = 1;
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for (i = 0; i < num_threads; i++) {
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pthread_join(threads[i], &status);
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assert(status == 0);
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}
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fd = drm_open_any();
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assert(fd >= 0);
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close(fd);
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return 0;
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}
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