IABSD.fr/xenocara/lib/libdrm/tests/nouveau/threaded.c

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• Author : jsg
  Date : 2022-04-29 10:11:42
  Hash : 17634269
  Message : Import libdrm 2.4.110

• lib/libdrm/tests/nouveau/threaded.c

• /*
   * Copyright © 2015 Canonical Ltd. (Maarten Lankhorst)
   *
   * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
   */
  
  #include <sys/ioctl.h>
  #include <dlfcn.h>
  #include <fcntl.h>
  #include <stdio.h>
  #include <unistd.h>
  #include <errno.h>
  #include <pthread.h>
  
  #include "xf86drm.h"
  #include "nouveau.h"
  
  static __typeof__(ioctl) *old_ioctl;
  static int failed;
  
  static int import_fd;
  
  #if defined(__GLIBC__) || defined(__FreeBSD__)
  int ioctl(int fd, unsigned long request, ...)
  #else
  int ioctl(int fd, int request, ...)
  #endif
  {
  	va_list va;
  	int ret;
  	void *arg;
  
  	va_start(va, request);
  	arg = va_arg(va, void *);
  	ret = old_ioctl(fd, request, arg);
  	va_end(va);
  
  	if (ret < 0 && request == DRM_IOCTL_GEM_CLOSE && errno == EINVAL)
  		failed = 1;
  
  	return ret;
  }
  
  static void *
  openclose(void *dev)
  {
  	struct nouveau_device *nvdev = dev;
  	struct nouveau_bo *bo = NULL;
  	int i;
  
  	for (i = 0; i < 100000; ++i) {
  		if (!nouveau_bo_prime_handle_ref(nvdev, import_fd, &bo))
  			nouveau_bo_ref(NULL, &bo);
  	}
  	return NULL;
  }
  
  int main(int argc, char *argv[])
  {
  	drmVersionPtr version;
  	const char *device = NULL;
  	int err, fd, fd2;
  	struct nouveau_device *nvdev, *nvdev2;
  	struct nouveau_bo *bo;
  	pthread_t t1, t2;
  
  	old_ioctl = dlsym(RTLD_NEXT, "ioctl");
  
  	if (argc < 2) {
  		fd = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
  		if (fd >= 0)
  			fd2 = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
  	} else {
  		device = argv[1];
  
  		fd = open(device, O_RDWR);
  		if (fd >= 0)
  			fd2 = open(device, O_RDWR);
  		else
  			fd2 = fd = -errno;
  	}
  
  	if (fd < 0) {
  		fprintf(stderr, "Opening nouveau render node failed with %i\n", fd);
  		return device ? -fd : 77;
  	}
  
  	if (fd2 < 0) {
  		fprintf(stderr, "Opening second nouveau render node failed with %i\n", -errno);
  		return errno;
  	}
  
  	version = drmGetVersion(fd);
  	if (version) {
  		printf("Version: %d.%d.%d\n", version->version_major,
  		       version->version_minor, version->version_patchlevel);
  		printf("  Name: %s\n", version->name);
  		printf("  Date: %s\n", version->date);
  		printf("  Description: %s\n", version->desc);
  
  		drmFreeVersion(version);
  	}
  
  	err = nouveau_device_wrap(fd, 0, &nvdev);
  	if (!err)
  		err = nouveau_device_wrap(fd2, 0, &nvdev2);
  	if (err < 0)
  		return 1;
  
  	err = nouveau_bo_new(nvdev2, NOUVEAU_BO_GART, 0, 4096, NULL, &bo);
  	if (!err)
  		err = nouveau_bo_set_prime(bo, &import_fd);
  
  	if (!err) {
  		pthread_create(&t1, NULL, openclose, nvdev);
  		pthread_create(&t2, NULL, openclose, nvdev);
  	}
  
  	pthread_join(t1, NULL);
  	pthread_join(t2, NULL);
  
  	close(import_fd);
  	nouveau_bo_ref(NULL, &bo);
  
  	nouveau_device_del(&nvdev2);
  	nouveau_device_del(&nvdev);
  	if (device) {
  		close(fd2);
  		close(fd);
  	} else {
  		drmClose(fd2);
  		drmClose(fd);
  	}
  
  	if (failed)
  		fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed with EINVAL,\n"
  				"race in opening/closing bo is likely.\n");
  
  	return failed;
  }