private-lib-event-libs-libuv.h 2.8 KB

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  1. /*
  2. * libwebsockets - small server side websockets and web server implementation
  3. *
  4. * Copyright (C) 2010 - 2019 Andy Green <[email protected]>
  5. *
  6. * Permission is hereby granted, free of charge, to any person obtaining a copy
  7. * of this software and associated documentation files (the "Software"), to
  8. * deal in the Software without restriction, including without limitation the
  9. * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  10. * sell copies of the Software, and to permit persons to whom the Software is
  11. * furnished to do so, subject to the following conditions:
  12. *
  13. * The above copyright notice and this permission notice shall be included in
  14. * all copies or substantial portions of the Software.
  15. *
  16. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22. * IN THE SOFTWARE.
  23. */
  24. #include <uv.h>
  25. /*
  26. * libuv's async destroy cb means that asking to close something doesn't mean
  27. * you can destroy it or parent things until after the close completes.
  28. *
  29. * So we must reference-count creation and close completions with libuv.
  30. *
  31. * All "static" (per-pt or per-context) uv handles must
  32. *
  33. * - have their .data set to point to the context
  34. *
  35. * - contribute to context->uv_count_static_asset_handles
  36. * counting
  37. */
  38. #define LWS_UV_REFCOUNT_STATIC_HANDLE_NEW(_x, _ctx) \
  39. { uv_handle_t *_uht = (uv_handle_t *)(_x); _uht->data = _ctx; \
  40. _ctx->count_event_loop_static_asset_handles++; }
  41. #define LWS_UV_REFCOUNT_STATIC_HANDLE_TO_CONTEXT(_x) \
  42. ((struct lws_context *)((uv_handle_t *)((_x)->data)))
  43. #define LWS_UV_REFCOUNT_STATIC_HANDLE_DESTROYED(_x) \
  44. (--(LWS_UV_REFCOUNT_STATIC_HANDLE_TO_CONTEXT(_x)-> \
  45. count_event_loop_static_asset_handles))
  46. struct lws_signal_watcher_libuv {
  47. uv_signal_t watcher;
  48. struct lws_context *context;
  49. };
  50. struct lws_pt_eventlibs_libuv {
  51. uv_loop_t *io_loop;
  52. struct lws_context_per_thread *pt;
  53. uv_signal_t signals[8];
  54. uv_timer_t sultimer;
  55. uv_idle_t idle;
  56. struct lws_signal_watcher_libuv w_sigint;
  57. };
  58. struct lws_context_eventlibs_libuv {
  59. uv_loop_t loop;
  60. };
  61. struct lws_io_watcher_libuv {
  62. uv_poll_t *pwatcher;
  63. struct lws_context *context;
  64. uint8_t actual_events;
  65. };
  66. struct lws_wsi_eventlibs_libuv {
  67. struct lws_io_watcher_libuv w_read;
  68. };
  69. uv_loop_t *
  70. lws_uv_getloop(struct lws_context *context, int tsi);
  71. int
  72. lws_uv_plugins_init(struct lws_context *context, const char * const *d);
  73. int
  74. lws_uv_plugins_destroy(struct lws_context *context);