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Diffstat (limited to 'lib/util/smb_threads.h')
-rw-r--r--lib/util/smb_threads.h84
1 files changed, 52 insertions, 32 deletions
diff --git a/lib/util/smb_threads.h b/lib/util/smb_threads.h
index 2ca163be9a..945e93803a 100644
--- a/lib/util/smb_threads.h
+++ b/lib/util/smb_threads.h
@@ -36,10 +36,10 @@ struct smb_thread_functions {
const char *location);
/* Thread local storage. */
- int (*create_tls)(const char *keyname,
+ int (*create_tls_once)(const char *keyname,
void **ppkey,
const char *location);
- void (*destroy_tls)(void *pkey,
+ void (*destroy_tls_once)(void **pkey,
const char *location);
int (*set_tls)(void *pkey, const void *pval, const char *location);
void *(*get_tls)(void *pkey, const char *location);
@@ -53,49 +53,69 @@ extern const struct smb_thread_functions *global_tfp;
\
static int smb_create_mutex_pthread(const char *lockname, void **pplock, const char *location) \
{ \
- pthread_mutex_t *pmut = (pthread_mutex_t *)malloc(sizeof(pthread_mutex_t)); \
- if (!pmut) { \
- return ENOMEM; \
- } \
- pthread_mutex_init(pmut, NULL); \
- *pplock = (void *)pmut; \
- return 0; \
+ pthread_mutex_t *pmut = (pthread_mutex_t *)malloc(sizeof(pthread_mutex_t)); \
+ if (!pmut) { \
+ return ENOMEM; \
+ } \
+ pthread_mutex_init(pmut, NULL); \
+ *pplock = (void *)pmut; \
+ return 0; \
} \
\
static void smb_destroy_mutex_pthread(void *plock, const char *location) \
{ \
- pthread_mutex_destroy((pthread_mutex_t *)plock); \
+ pthread_mutex_destroy((pthread_mutex_t *)plock); \
free(plock); \
} \
\
static int smb_lock_pthread(void *plock, enum smb_thread_lock_type lock_type, const char *location) \
{ \
- if (lock_type == SMB_THREAD_UNLOCK) { \
- return pthread_mutex_unlock((pthread_mutex_t *)plock); \
- } else { \
- return pthread_mutex_lock((pthread_mutex_t *)plock); \
- } \
+ if (lock_type == SMB_THREAD_UNLOCK) { \
+ return pthread_mutex_unlock((pthread_mutex_t *)plock); \
+ } else { \
+ return pthread_mutex_lock((pthread_mutex_t *)plock); \
+ } \
} \
\
-static int smb_create_tls_pthread(const char *keyname, void **ppkey, const char *location) \
+static pthread_mutex_t create_tls_mutex = PTHREAD_MUTEX_INITIALIZER; \
+ \
+static int smb_create_tls_once_pthread(const char *keyname, void **ppkey, const char *location) \
{ \
- int ret; \
- pthread_key_t *pkey = (pthread_key_t *)malloc(sizeof(pthread_key_t)); \
- if (!pkey) { \
- return ENOMEM; \
- } \
- ret = pthread_key_create(pkey, NULL); \
- if (ret) { \
- return ret; \
- } \
- *ppkey = (void *)pkey; \
- return 0; \
+ int ret; \
+ pthread_key_t *pkey; \
+ ret = pthread_mutex_lock(&create_tls_mutex); \
+ if (ret) { \
+ return ret; \
+ } \
+ if (*ppkey) { \
+ pthread_mutex_unlock(&create_tls_mutex); \
+ return 0; \
+ } \
+ pkey = (pthread_key_t *)malloc(sizeof(pthread_key_t)); \
+ if (!pkey) { \
+ pthread_mutex_unlock(&create_tls_mutex); \
+ return ENOMEM; \
+ } \
+ ret = pthread_key_create(pkey, NULL); \
+ if (ret) { \
+ free(pkey); \
+ pthread_mutex_unlock(&create_tls_mutex); \
+ return ret; \
+ } \
+ *ppkey = (void *)pkey; \
+ pthread_mutex_unlock(&create_tls_mutex); \
+ return 0; \
} \
\
-static void smb_destroy_tls_pthread(void *pkey, const char *location) \
+static void smb_destroy_tls_once_pthread(void **ppkey, const char *location) \
{ \
- pthread_key_delete(*(pthread_key_t *)pkey); \
- free(pkey); \
+ pthread_mutex_lock(&create_tls_mutex); \
+ if (*ppkey) { \
+ pthread_key_delete(*(pthread_key_t *)ppkey); \
+ free(*ppkey); \
+ *ppkey = NULL; \
+ } \
+ pthread_mutex_unlock(&create_tls_mutex); \
} \
\
static int smb_set_tls_pthread(void *pkey, const void *pval, const char *location) \
@@ -112,8 +132,8 @@ static const struct smb_thread_functions (tf) = { \
smb_create_mutex_pthread, \
smb_destroy_mutex_pthread, \
smb_lock_pthread, \
- smb_create_tls_pthread, \
- smb_destroy_tls_pthread, \
+ smb_create_tls_once_pthread, \
+ smb_destroy_tls_once_pthread, \
smb_set_tls_pthread, \
smb_get_tls_pthread }