From: Howard Chu <hyc@openldap.org>
Date: Sat, 24 Aug 2002 05:39:43 +0000 (+0000)
Subject: Added thread-pool getkey/setkey functions
X-Git-Tag: NO_SLAP_OP_BLOCKS~1189
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=8c30114d847ff034dd9e9382d88e276fa7f82833;p=openldap

Added thread-pool getkey/setkey functions
---

diff --git a/include/ldap_pvt_thread.h b/include/ldap_pvt_thread.h
index 3179f138c2..4989cb4b73 100644
--- a/include/ldap_pvt_thread.h
+++ b/include/ldap_pvt_thread.h
@@ -141,6 +141,9 @@ ldap_pvt_thread_rdwr_active LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));
 
 typedef ldap_int_thread_pool_t ldap_pvt_thread_pool_t;
 
+typedef void * (ldap_pvt_thread_start_t) LDAP_P((void *ctx, void *arg));
+typedef void (ldap_pvt_thread_pool_keyfree_t) LDAP_P((void *key, void *data));
+
 LDAP_F( int )
 ldap_pvt_thread_pool_init LDAP_P((
 	ldap_pvt_thread_pool_t *pool_out,
@@ -150,7 +153,7 @@ ldap_pvt_thread_pool_init LDAP_P((
 LDAP_F( int )
 ldap_pvt_thread_pool_submit LDAP_P((
 	ldap_pvt_thread_pool_t *pool,
-	void *(*start_routine)( void * ),
+	ldap_pvt_thread_start_t *start,
 	void *arg ));
 
 LDAP_F( int )
@@ -167,6 +170,20 @@ ldap_pvt_thread_pool_destroy LDAP_P((
 	ldap_pvt_thread_pool_t *pool,
 	int run_pending ));
 
+LDAP_F( int )
+ldap_pvt_thread_pool_getkey LDAP_P((
+	void *ctx,
+	void *key,
+	void **data,
+	ldap_pvt_thread_pool_keyfree_t **kfree ));
+
+LDAP_F( int )
+ldap_pvt_thread_pool_setkey LDAP_P((
+	void *ctx,
+	void *key,
+	void *data,
+	ldap_pvt_thread_pool_keyfree_t *kfree ));
+
 
 LDAP_END_DECL
 
diff --git a/libraries/libldap_r/thr_stub.c b/libraries/libldap_r/thr_stub.c
index eacdd5ea44..28e3e32670 100644
--- a/libraries/libldap_r/thr_stub.c
+++ b/libraries/libldap_r/thr_stub.c
@@ -154,9 +154,9 @@ ldap_pvt_thread_pool_init (
 int
 ldap_pvt_thread_pool_submit (
 	ldap_pvt_thread_pool_t *pool,
-	void *(*start_routine)( void * ), void *arg )
+	ldap_pvt_thread_start_t *start_routine, void *arg )
 {
-	(start_routine)(arg);
+	(start_routine)(NULL, arg);
 	return(0);
 }
 
@@ -180,4 +180,15 @@ ldap_pvt_thread_pool_destroy (
 	return(0);
 }
 
+int ldap_pvt_thread_pool_getkey (
+	void *ctx, void *key, void **data, void **kfree )
+{
+	return(0);
+}
+
+int ldap_pvt_thread_pool_setkey (
+	void *ctx, void *key, void *data, void *kfree )
+{
+	return(0);
+}
 #endif /* NO_THREADS */
diff --git a/libraries/libldap_r/tpool.c b/libraries/libldap_r/tpool.c
index d48a8e9370..4665f35a51 100644
--- a/libraries/libldap_r/tpool.c
+++ b/libraries/libldap_r/tpool.c
@@ -17,6 +17,7 @@
 #include <ac/stdlib.h>
 #include <ac/string.h>
 #include <ac/time.h>
+#include <ac/errno.h>
 
 #include "ldap-int.h"
 #include "ldap_pvt_thread.h"
@@ -30,13 +31,25 @@ enum ldap_int_thread_pool_state {
 	LDAP_INT_THREAD_POOL_STOPPING
 };
 
+typedef struct ldap_int_thread_key_s {
+	void *ltk_key;
+	void *ltk_data;
+	ldap_pvt_thread_pool_keyfree_t *ltk_free;
+} ldap_int_thread_key_t;
+
+/* Max number of thread-specific keys we store per thread.
+ * We don't expect to use many...
+ */
+#define	MAXKEYS	32
+
 typedef struct ldap_int_thread_ctx_s {
 	union {
 	LDAP_STAILQ_ENTRY(ldap_int_thread_ctx_s) q;
 	LDAP_SLIST_ENTRY(ldap_int_thread_ctx_s) l;
 	} ltc_next;
-	void *(*ltc_start_routine)( void *);
+	ldap_pvt_thread_start_t *ltc_start_routine;
 	void *ltc_arg;
+	ldap_int_thread_key_t ltc_key[MAXKEYS];
 } ldap_int_thread_ctx_t;
 
 struct ldap_int_thread_pool_s {
@@ -151,7 +164,7 @@ ldap_pvt_thread_pool_init (
 int
 ldap_pvt_thread_pool_submit (
 	ldap_pvt_thread_pool_t *tpool,
-	void *(*start_routine)( void * ), void *arg )
+	ldap_pvt_thread_start_t *start_routine, void *arg )
 {
 	struct ldap_int_thread_pool_s *pool;
 	ldap_int_thread_ctx_t *ctx;
@@ -178,12 +191,16 @@ ldap_pvt_thread_pool_submit (
 	if (ctx) {
 		LDAP_SLIST_REMOVE_HEAD(&pool->ltp_free_list, ltc_next.l);
 	} else {
+		int i;
 		ctx = (ldap_int_thread_ctx_t *) LDAP_MALLOC(
 			sizeof(ldap_int_thread_ctx_t));
 		if (ctx == NULL) {
 			ldap_pvt_thread_mutex_unlock(&pool->ltp_mutex);
 			return(-1);
 		}
+		for ( i=0; i<MAXKEYS; i++ ) {
+			ctx->ltc_key[i].ltk_key = NULL;
+		}
 	}
 
 	ctx->ltc_start_routine = start_routine;
@@ -286,6 +303,17 @@ ldap_pvt_thread_pool_backload ( ldap_pvt_thread_pool_t *tpool )
 	return(count);
 }
 
+static void ldap_int_thread_pool_keyfree( ldap_int_thread_ctx_t *ctx )
+{
+	int i;
+	for ( i=0; i<MAXKEYS && ctx->ltc_key[i].ltk_key; i++ ) {
+		if (ctx->ltc_key[i].ltk_free)
+			ctx->ltc_key[i].ltk_free(
+				ctx->ltc_key[i].ltk_key,
+				ctx->ltc_key[i].ltk_data );
+	}
+}
+
 int
 ldap_pvt_thread_pool_destroy ( ldap_pvt_thread_pool_t *tpool, int run_pending )
 {
@@ -334,12 +362,14 @@ ldap_pvt_thread_pool_destroy ( ldap_pvt_thread_pool_t *tpool, int run_pending )
 	while ((ctx = LDAP_STAILQ_FIRST(&pool->ltp_pending_list)) != NULL)
 	{
 		LDAP_STAILQ_REMOVE_HEAD(&pool->ltp_pending_list, ltc_next.q);
+		ldap_int_thread_pool_keyfree( ctx );
 		LDAP_FREE(ctx);
 	}
 
 	while ((ctx = LDAP_SLIST_FIRST(&pool->ltp_free_list)) != NULL)
 	{
 		LDAP_SLIST_REMOVE_HEAD(&pool->ltp_free_list, ltc_next.l);
+		ldap_int_thread_pool_keyfree( ctx );
 		LDAP_FREE(ctx);
 	}
 
@@ -398,7 +428,7 @@ ldap_int_thread_pool_wrapper (
 		pool->ltp_active_count++;
 		ldap_pvt_thread_mutex_unlock(&pool->ltp_mutex);
 
-		(ctx->ltc_start_routine)(ctx->ltc_arg);
+		ctx->ltc_start_routine(ctx, ctx->ltc_arg);
 
 		ldap_pvt_thread_mutex_lock(&pool->ltp_mutex);
 		LDAP_SLIST_INSERT_HEAD(&pool->ltp_free_list, ctx, ltc_next.l);
@@ -417,7 +447,51 @@ ldap_int_thread_pool_wrapper (
 	pool->ltp_open_count--;
 	ldap_pvt_thread_mutex_unlock(&pool->ltp_mutex);
 
+
 	ldap_pvt_thread_exit(NULL);
 	return(NULL);
 }
+
+int ldap_pvt_thread_pool_getkey(
+	void *xctx,
+	void *key,
+	void **data,
+	ldap_pvt_thread_pool_keyfree_t **kfree )
+{
+	ldap_int_thread_ctx_t *ctx = xctx;
+	int i;
+
+	if ( !ctx || !data ) return EINVAL;
+
+	for ( i=0; i<MAXKEYS && ctx->ltc_key[i].ltk_key; i++ ) {
+		if ( ctx->ltc_key[i].ltk_key == key ) {
+			*data = ctx->ltc_key[i].ltk_data;
+			if ( kfree ) *kfree = ctx->ltc_key[i].ltk_free;
+			return 0;
+		}
+	}
+	return ENOENT;
+}
+
+int ldap_pvt_thread_pool_setkey(
+	void *xctx,
+	void *key,
+	void *data,
+	ldap_pvt_thread_pool_keyfree_t *kfree )
+{
+	ldap_int_thread_ctx_t *ctx = xctx;
+	int i;
+
+	if ( !ctx || !key ) return EINVAL;
+
+	for ( i=0; i<MAXKEYS; i++ ) {
+		if ( !ctx->ltc_key[i].ltk_key || ctx->ltc_key[i].ltk_key == key ) {
+			ctx->ltc_key[i].ltk_key = key;
+			ctx->ltc_key[i].ltk_data = data;
+			ctx->ltc_key[i].ltk_free = kfree;
+			return 0;
+		}
+	}
+	return ENOMEM;
+}
 #endif /* LDAP_HAVE_THREAD_POOL */
diff --git a/servers/slapd/connection.c b/servers/slapd/connection.c
index 8570a4a163..7e99f261b2 100644
--- a/servers/slapd/connection.c
+++ b/servers/slapd/connection.c
@@ -60,6 +60,8 @@ static int connection_resched( Connection *conn );
 static void connection_abandon( Connection *conn );
 static void connection_destroy( Connection *c );
 
+static ldap_pvt_thread_start_t connection_operation;
+
 struct co_arg {
 	Connection	*co_conn;
 	Operation	*co_op;
@@ -904,7 +906,7 @@ void connection_done( Connection *c )
 #endif /* !SLAPD_MONITOR */
 
 static void *
-connection_operation( void *arg_v )
+connection_operation( void *ctx, void *arg_v )
 {
 	int rc;
 	struct co_arg	*arg = arg_v;
@@ -918,6 +920,8 @@ connection_operation( void *arg_v )
 	num_ops_initiated++;
 	ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
 
+	arg->co_op->o_threadctx = ctx;
+
 	if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
 #ifdef NEW_LOGGING
 		LDAP_LOG( CONNECTION, ERR, 
diff --git a/servers/slapd/slap.h b/servers/slapd/slap.h
index 8ad39c3272..94f95bf11c 100644
--- a/servers/slapd/slap.h
+++ b/servers/slapd/slap.h
@@ -1542,6 +1542,7 @@ typedef struct slap_op {
 	slap_callback	*o_callback;	/* callback pointers */
 	LDAPControl	**o_ctrls;	 /* controls */
 
+	void	*o_threadctx;		/* thread pool thread context */
 	void	*o_private;	/* anything the backend needs */
 
 	LDAP_STAILQ_ENTRY(slap_op)	o_next;	/* next operation in list	  */