1#include <sys/cdefs.h>
2__FBSDID("$FreeBSD: head/lib/libc/resolv/mtctxres.c 156956 2006-03-21 15:37:16Z ume $");
3
4#include <port_before.h>
5#ifdef DO_PTHREADS
6#include <pthread.h>
7#ifdef _LIBC
8#include <pthread_np.h>
9#endif
10#endif
11#include <errno.h>
12#include <netdb.h>
13#include <stdlib.h>
14#include <string.h>
15#include <resolv_mt.h>
16#include <port_after.h>
17
18#ifdef DO_PTHREADS
19static pthread_key_t key;
20static int mt_key_initialized = 0;
21
22static int __res_init_ctx(void);
23static void __res_destroy_ctx(void *);

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40 int pthread_keycreate_ret;
41
42 pthread_keycreate_ret = pthread_key_create(&key, __res_destroy_ctx);
43 if (pthread_keycreate_ret == 0)
44 mt_key_initialized = 1;
45}
46#endif
47
48#ifndef _LIBC
49/*
50 * To support binaries that used the private MT-safe interface in
51 * Solaris 8, we still need to provide the __res_enable_mt()
52 * and __res_disable_mt() entry points. They're do-nothing routines.
53 */
54int
55__res_enable_mt(void) {
56 return (-1);
57}
58
59int
60__res_disable_mt(void) {
61 return (0);
62}
63#endif
64
65#ifdef DO_PTHREADS
66static int
67__res_init_ctx(void) {
68
69 mtctxres_t *mt;
70 int ret;
71

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101}
102#endif
103
104mtctxres_t *
105___mtctxres(void) {
106#ifdef DO_PTHREADS
107 mtctxres_t *mt;
108
109#ifdef _LIBC
110 if (pthread_main_np() != 0)
111 return (&sharedctx);
112#endif
113
114 /*
115 * This if clause should only be executed if we are linking
116 * statically. When linked dynamically _mtctxres_init() should
117 * be called at binding time due the #pragma above.
118 */
119 if (!mt_key_initialized) {
120 static pthread_mutex_t keylock = PTHREAD_MUTEX_INITIALIZER;
121 pthread_mutex_lock(&keylock);

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