diff --git a/src/include/ordq.h b/src/include/ordq.h
index f064de1..a6efa6b 100644
--- a/src/include/ordq.h
+++ b/src/include/ordq.h
@@ -14,7 +14,7 @@ typedef struct _ordq_item {
     void*              data;
 } ordq_item_t;
 
-typedef int (*ordq_cmp_fn_t)(ordkey_t, ordkey_t);
+typedef int (*ordq_cmp_fn_t)(void*, ordkey_t, ordkey_t);
 typedef void (*ordq_data_killer_t)(void*);
 
 typedef struct {
@@ -22,6 +22,7 @@ typedef struct {
     ordq_item_t*       head;
     ordq_data_killer_t killer;
     ordq_cmp_fn_t      cmp;
+    void*              ctx;
 } ordq_t;
 
 #define mk_ordkey(k) (ordkey_t)((long)(k))
@@ -31,5 +32,6 @@ extern void         ordq_fini(ordq_t* q);
 extern int          ordq_put(ordq_t*, ordkey_t, void*);
 extern ordq_item_t* ordq_get(ordq_t*);
 extern ordq_item_t* ordq_peek(ordq_t*);
+extern void         ordq_set_ctx(ordq_t*, void*);
 
 #endif
diff --git a/src/lib/ordq.c b/src/lib/ordq.c
index a930a3b..877c823 100644
--- a/src/lib/ordq.c
+++ b/src/lib/ordq.c
@@ -16,6 +16,7 @@ int ordq_init(ordq_t* q, ordq_data_killer_t killer, ordq_cmp_fn_t cmp)
     q->head   = NULL;
     q->killer = killer;
     q->cmp    = cmp;
+    q->ctx    = NULL;
 
     return 0;
 }
@@ -25,7 +26,7 @@ static int ordq_put_(ordq_t* q, ordq_item_t* it)
     ordq_item_t** p = &(q->head);
 
     while ((*p) != NULL) {
-        if (q->cmp((*p)->key, it->key) > 0) {
+        if (q->cmp(q->ctx, (*p)->key, it->key) > 0) {
             /* we found the location to insert */
             break;
         }
@@ -105,3 +106,14 @@ ordq_item_t* ordq_peek(ordq_t* q)
 
     return it;
 }
+
+void ordq_set_ctx(ordq_t* q, void* ctx)
+{
+    if (q == NULL) {
+        return;
+    }
+
+    mylock_lock(&(q->lock));
+    q->ctx = ctx;
+    mylock_unlock(&(q->lock));
+}
diff --git a/src/lib/testsuite/test_ordq.c b/src/lib/testsuite/test_ordq.c
index 64b459e..ff2d8f7 100644
--- a/src/lib/testsuite/test_ordq.c
+++ b/src/lib/testsuite/test_ordq.c
@@ -7,7 +7,7 @@
 #include "unity.h"
 #include "utils.h"
 
-static int long_cmp(ordkey_t k1, ordkey_t k2)
+static int long_cmp(void* ctx, ordkey_t k1, ordkey_t k2)
 {
     if ((long)k1 < (long)k2) {
         return -1;
diff --git a/src/scheduler/include/scheduler.h b/src/scheduler/include/scheduler.h
index 377887b..3b6372c 100644
--- a/src/scheduler/include/scheduler.h
+++ b/src/scheduler/include/scheduler.h
@@ -6,6 +6,7 @@
 
 #include "client.h"
 #include "xce/types.h"
+#include "mylock.h"
 #include "xlist.h"
 
 typedef enum {