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timediff.h 1.9 KB

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  1. #ifndef HEADER_CURL_TIMEDIFF_H
  2. #define HEADER_CURL_TIMEDIFF_H
  3. /***************************************************************************
  4. * _ _ ____ _
  5. * Project ___| | | | _ \| |
  6. * / __| | | | |_) | |
  7. * | (__| |_| | _ <| |___
  8. * \___|\___/|_| \_\_____|
  9. *
  10. * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
  11. *
  12. * This software is licensed as described in the file COPYING, which
  13. * you should have received as part of this distribution. The terms
  14. * are also available at https://curl.se/docs/copyright.html.
  15. *
  16. * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  17. * copies of the Software, and permit persons to whom the Software is
  18. * furnished to do so, under the terms of the COPYING file.
  19. *
  20. * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21. * KIND, either express or implied.
  22. *
  23. * SPDX-License-Identifier: curl
  24. *
  25. ***************************************************************************/
  26. #include "curl_setup.h"
  27. /* Use a larger type even for 32 bit time_t systems so that we can keep
  28. microsecond accuracy in it */
  29. typedef curl_off_t timediff_t;
  30. #define CURL_FORMAT_TIMEDIFF_T CURL_FORMAT_CURL_OFF_T
  31. #define TIMEDIFF_T_MAX CURL_OFF_T_MAX
  32. #define TIMEDIFF_T_MIN CURL_OFF_T_MIN
  33. /*
  34. * Converts number of milliseconds into a timeval structure.
  35. *
  36. * Return values:
  37. * NULL IF tv is NULL or ms < 0 (eg. no timeout -> blocking select)
  38. * tv with 0 in both fields IF ms == 0 (eg. 0ms timeout -> polling select)
  39. * tv with converted fields IF ms > 0 (eg. >0ms timeout -> waiting select)
  40. */
  41. struct timeval *curlx_mstotv(struct timeval *tv, timediff_t ms);
  42. /*
  43. * Converts a timeval structure into number of milliseconds.
  44. */
  45. timediff_t curlx_tvtoms(struct timeval *tv);
  46. #endif /* HEADER_CURL_TIMEDIFF_H */