support passing args to request handle for elimination of global var

src/lib/client.c

@@ -76,7 +76,8 @@ void xcecli_ctx_fini(xcecli_ctx_t c)
     free(ctx);
 }
 
-int xcecli_set_handler(xcecli_ctx_t c, xce_request_handler_t handler)
+int xcecli_set_handler(xcecli_ctx_t c, xce_request_handler_t handler,
+                       void* args)
 {
     api_ctx_t* ctx = (api_ctx_t*)c;
 
@@ -84,7 +85,7 @@ int xcecli_set_handler(xcecli_ctx_t c, xce_request_handler_t handler)
         return -EINVAL;
     }
 
-    return xce_ctx_set_handler(&(ctx->ctx), handler);
+    return xce_ctx_set_handler(&(ctx->ctx), handler, args);
 }
 
 int xcecli_wakeup(xcecli_ctx_t c, int status)

src/lib/xcectx.c

@@ -107,7 +107,7 @@ static int vtask_entry(vtask_t* task)
         }
 
         if (callnext) {
-            rc = (ctx->handler)(&request);
+            rc = (ctx->handler)(&request, ctx->handler_args);
         }
     }
 
@@ -198,13 +198,16 @@ void xce_ctx_fini(xce_ctx_t* ctx)
     return;
 }
 
-int xce_ctx_set_handler(xce_ctx_t* ctx, xce_request_handler_t handler)
+int xce_ctx_set_handler(xce_ctx_t* ctx, xce_request_handler_t handler,
+                        void* args)
 {
     if ((ctx == NULL) || (handler == NULL)) {
         return -EINVAL;
     }
 
-    ctx->handler = handler;
+    ctx->handler      = handler;
+    ctx->handler_args = args;
+
     return 0;
 }