diff --git a/HISTORY b/HISTORY
index e915ad3..144f5d2 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,5 +1,5 @@
 
-Version 1.54  2021-09-13
+Version 1.54  2021-09-22
   * fast_allocator.[hc]: correct reclaim_interval logic
   * shared_func.[hc]: add functions getFileContentEx1 and getFileContent1
   * fc_queue.[hc]: add function fc_queue_timedpeek
diff --git a/src/fast_mblock.h b/src/fast_mblock.h
index fac9720..d3f220a 100644
--- a/src/fast_mblock.h
+++ b/src/fast_mblock.h
@@ -24,7 +24,6 @@
 #include <pthread.h>
 #include "common_define.h"
 #include "fc_memory.h"
-#include "chain.h"
 #include "logger.h"
 
 #define FAST_MBLOCK_NAME_SIZE 32
@@ -304,6 +303,14 @@ static inline int fast_mblock_free_object(struct fast_mblock_man *mblock,
     return fast_mblock_free(mblock, fast_mblock_to_node_ptr(object));
 }
 
+/**
+free objects (put objects to the mblock)
+parameters:
+	mblock: the mblock pointer
+	objs:  the object array to free
+    count: the count of the object array
+return none
+*/
 void fast_mblock_free_objects(struct fast_mblock_man *mblock,
         void **objs, const int count);
 
diff --git a/src/fc_queue.c b/src/fc_queue.c
index 00c1eac..a5a307d 100644
--- a/src/fc_queue.c
+++ b/src/fc_queue.c
@@ -206,6 +206,26 @@ void *fc_queue_timedpeek(struct fc_queue *queue,
     return data;
 }
 
+int fc_queue_alloc_chain(struct fc_queue *queue, struct fast_mblock_man
+        *mblock, const int count, struct fc_queue_info *chain)
+{
+    struct fast_mblock_node *node;
+
+    if ((node=fast_mblock_batch_alloc(mblock, count)) == NULL) {
+        chain->head = chain->tail = NULL;
+        return ENOMEM;
+    }
+
+    chain->head = chain->tail = node->data;
+    while ((node=node->next) != NULL) {
+        FC_QUEUE_NEXT_PTR(queue, chain->tail) = node->data;
+        chain->tail = node->data;
+    }
+    FC_QUEUE_NEXT_PTR(queue, chain->tail) = NULL;
+
+    return 0;
+}
+
 int fc_queue_free_chain(struct fc_queue *queue, struct fast_mblock_man
         *mblock, struct fc_queue_info *qinfo)
 {
diff --git a/src/fc_queue.h b/src/fc_queue.h
index b0bdee4..ee588ec 100644
--- a/src/fc_queue.h
+++ b/src/fc_queue.h
@@ -173,6 +173,9 @@ void *fc_queue_timedpeek(struct fc_queue *queue,
 #define fc_queue_timedpeek_us(queue, timeout_us) \
     fc_queue_timedpeek(queue, timeout_us, FC_TIME_UNIT_USECOND)
 
+int fc_queue_alloc_chain(struct fc_queue *queue, struct fast_mblock_man
+        *mblock, const int count, struct fc_queue_info *chain);
+
 int fc_queue_free_chain(struct fc_queue *queue, struct fast_mblock_man
         *mblock, struct fc_queue_info *qinfo);
 
diff --git a/src/sorted_queue.c b/src/sorted_queue.c
index d29ff64..cf72d69 100644
--- a/src/sorted_queue.c
+++ b/src/sorted_queue.c
@@ -75,7 +75,9 @@ void *sorted_queue_pop_ex(struct sorted_queue *sq,
 
     PTHREAD_MUTEX_LOCK(&sq->queue.lc_pair.lock);
     do {
-        if (sq->queue.head == NULL) {
+        if (sq->queue.head == NULL || sq->compare_func(
+                    sq->queue.head, less_equal) > 0)
+        {
             if (!blocked) {
                 data = NULL;
                 break;