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src/os/unix/ngx_thread_id.c - nginx

Functions defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #include <ngx_config.h>
  9. #include <ngx_core.h>
  10. #include <ngx_thread_pool.h>


  13. #if (NGX_LINUX)

  15. /*
  16. * Linux thread id is a pid of thread created by clone(2),
  17. * glibc does not provide a wrapper for gettid().
  18. */

  20. ngx_tid_t
  21. ‌ngx_thread_tid(void)
  22. {
  23.     return syscall(SYS_gettid);
  24. }

  26. #elif (NGX_FREEBSD) && (__FreeBSD_version >= 900031)

  28. #include <pthread_np.h>

  30. ngx_tid_t
  31. ‌ngx_thread_tid(void)
  32. {
  33.     return pthread_getthreadid_np();
  34. }

  36. #elif (NGX_DARWIN)

  38. /*
  39. * MacOSX thread has two thread ids:
  40. *
  41. * 1) MacOSX 10.6 (Snow Leoprad) has pthread_threadid_np() returning
  42. *    an uint64_t value, which is obtained using the __thread_selfid()
  43. *    syscall.  It is a number above 300,000.
  44. */

  46. ngx_tid_t
  47. ‌ngx_thread_tid(void)
  48. {
  49.     uint64_t  tid;

  51.     (void) pthread_threadid_np(NULL, &tid);
  52.     return tid;
  53. }

  55. /*
  56. * 2) Kernel thread mach_port_t returned by pthread_mach_thread_np().
  57. *    It is a number in range 100-100,000.
  58. *
  59. * return pthread_mach_thread_np(pthread_self());
  60. */

  62. #else

  64. ngx_tid_t
  65. ‌ngx_thread_tid(void)
  66. {
  67.     return (uint64_t) (uintptr_t) pthread_self();
  68. }

  70. #endif

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