thread.c revision 290001 
1/*
2 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1998-2001  Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* $Id: thread.c,v 1.24 2007/06/19 23:47:19 tbox Exp $ */
19
20#include <config.h>
21
22#include <process.h>
23
24#include <isc/thread.h>
25
26isc_result_t
27isc_thread_create(isc_threadfunc_t start, isc_threadarg_t arg,
28		  isc_thread_t *threadp)
29{
30	isc_thread_t thread;
31	unsigned int id;
32
33	thread = (isc_thread_t)_beginthreadex(NULL, 0, start, arg, 0, &id);
34	if (thread == NULL) {
35		/* XXX */
36		return (ISC_R_UNEXPECTED);
37	}
38
39	*threadp = thread;
40
41	return (ISC_R_SUCCESS);
42}
43
44isc_result_t
45isc_thread_join(isc_thread_t thread, isc_threadresult_t *rp) {
46	DWORD result;
47	DWORD threadrc;
48
49	result = WaitForSingleObject(thread, INFINITE);
50	if (result != WAIT_OBJECT_0) {
51		/* XXX */
52		return (ISC_R_UNEXPECTED);
53	}
54	if (rp != NULL) {
55		if(!GetExitCodeThread(thread, &threadrc)) {
56			/* XXX */
57			return (ISC_R_UNEXPECTED);
58		}
59		*rp = threadrc;
60	}
61	(void)CloseHandle(thread);
62
63	return (ISC_R_SUCCESS);
64}
65
66void
67isc_thread_setconcurrency(unsigned int level) {
68	/*
69	 * This is unnecessary on Win32 systems, but is here so that the
70	 * call exists
71	 */
72}
73
74void *
75isc_thread_key_getspecific(isc_thread_key_t key) {
76	return(TlsGetValue(key));
77}
78
79int
80isc_thread_key_setspecific(isc_thread_key_t key, void *value) {
81	return (TlsSetValue(key, value) ? 0 : GetLastError());
82}
83
84int
85isc_thread_key_create(isc_thread_key_t *key, void (*func)(void *)) {
86	*key = TlsAlloc();
87
88	return ((*key != -1) ? 0 : GetLastError());
89}
90
91int
92isc_thread_key_delete(isc_thread_key_t key) {
93	return (TlsFree(key) ? 0 : GetLastError());
94}
95