external/bsd/bind/dist/lib/isc/win32/thread.c

   1 /*      $NetBSD: thread.c,v 1.4 2014/12/10 04:38:01 christos Exp $      */
   2
   3 /*
   4  * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
   5  * Copyright (C) 1998-2001  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19
  20 /* Id: thread.c,v 1.24 2007/06/19 23:47:19 tbox Exp  */
  21
  22 #include <config.h>
  23
  24 #include <process.h>
  25
  26 #include <isc/thread.h>
  27
  28 isc_result_t
  29 isc_thread_create(isc_threadfunc_t start, isc_threadarg_t arg,
  30                   isc_thread_t *threadp)
  31 {
  32         isc_thread_t thread;
  33         unsigned int id;
  34
  35         thread = (isc_thread_t)_beginthreadex(NULL, 0, start, arg, 0, &id);
  36         if (thread == NULL) {
  37                 /* XXX */
  38                 return (ISC_R_UNEXPECTED);
  39         }
  40
  41         *threadp = thread;
  42
  43         return (ISC_R_SUCCESS);
  44 }
  45
  46 isc_result_t
  47 isc_thread_join(isc_thread_t thread, isc_threadresult_t *rp) {
  48         DWORD result;
  49
  50         result = WaitForSingleObject(thread, INFINITE);
  51         if (result != WAIT_OBJECT_0) {
  52                 /* XXX */
  53                 return (ISC_R_UNEXPECTED);
  54         }
  55         if (rp != NULL && !GetExitCodeThread(thread, rp)) {
  56                 /* XXX */
  57                 return (ISC_R_UNEXPECTED);
  58         }
  59         (void)CloseHandle(thread);
  60
  61         return (ISC_R_SUCCESS);
  62 }
  63
  64 void
  65 isc_thread_setconcurrency(unsigned int level) {
  66         /*
  67          * This is unnecessary on Win32 systems, but is here so that the
  68          * call exists
  69          */
  70 }
  71
  72 void *
  73 isc_thread_key_getspecific(isc_thread_key_t key) {
  74         return(TlsGetValue(key));
  75 }
  76
  77 int
  78 isc_thread_key_setspecific(isc_thread_key_t key, void *value) {
  79         return (TlsSetValue(key, value) ? 0 : GetLastError());
  80 }
  81
  82 int
  83 isc_thread_key_create(isc_thread_key_t *key, void (*func)(void *)) {
  84         *key = TlsAlloc();
  85
  86         return ((*key != -1) ? 0 : GetLastError());
  87 }
  88
  89 int
  90 isc_thread_key_delete(isc_thread_key_t key) {
  91         return (TlsFree(key) ? 0 : GetLastError());
  92 }