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,
 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 )
        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
 
 
 #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"
        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 {
 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;
        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;
        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 )
 {
        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);
        }
 
                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);
        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 */