rbo.h 1.8 KB

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  1. /*
  2. * Copyright © 2011 Red Hat
  3. *
  4. * Permission is hereby granted, free of charge, to any person obtaining a
  5. * copy of this software and associated documentation files (the "Software"),
  6. * to deal in the Software without restriction, including without limitation
  7. * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8. * and/or sell copies of the Software, and to permit persons to whom the
  9. * Software is furnished to do so, subject to the following conditions:
  10. *
  11. * The above copyright notice and this permission notice (including the next
  12. * paragraph) shall be included in all copies or substantial portions of the
  13. * Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  18. * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21. * IN THE SOFTWARE.
  22. *
  23. * Authors:
  24. * Jerome Glisse <j.glisse@gmail.com>
  25. */
  26. #ifndef RBO_H
  27. #define RBO_H
  28. #include "util_double_list.h"
  29. struct rbo {
  30. struct list_head list;
  31. int fd;
  32. unsigned refcount;
  33. unsigned mapcount;
  34. unsigned handle;
  35. unsigned size;
  36. unsigned alignment;
  37. void *data;
  38. };
  39. struct rbo *rbo(int fd, unsigned handle, unsigned size,
  40. unsigned alignment, void *ptr);
  41. int rbo_map(struct rbo *bo);
  42. void rbo_unmap(struct rbo *bo);
  43. struct rbo *rbo_incref(struct rbo *bo);
  44. struct rbo *rbo_decref(struct rbo *bo);
  45. int rbo_wait(struct rbo *bo);
  46. #endif