Fix the order of callback by performFunctionInCocosThread and add unit-test for it.

native/cocos/base/Scheduler.cpp

@@ -360,9 +360,7 @@ void Scheduler::runFunctionsToBePerformedInCocosThread() {
         }
 
         std::lock_guard<std::mutex> lk(_performMutex);
-        for (; iter != temp.end(); ++iter) {
-            _functionsToPerform.emplace_back(std::move(*iter));
-        }
+        _functionsToPerform.insert(_functionsToPerform.begin(), std::make_move_iterator(iter), std::make_move_iterator(temp.end()));
     }
 }
 

native/tests/unit-test/src/scheduler_test.cpp

@@ -0,0 +1,65 @@
+/****************************************************************************
+ Copyright (c) 2014-2016 Chukong Technologies Inc.
+ Copyright (c) 2017-2023 Xiamen Yaji Software Co., Ltd.
+
+ http://www.cocos.com
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights to
+ use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ of the Software, and to permit persons to whom the Software is furnished to do so,
+ subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+****************************************************************************/
+#include <vector>
+
+#include "base/Scheduler.h"
+#include "utils.h"
+
+using namespace cc;
+
+TEST(schedulerTest, performInCocosThreadOrder) {
+    auto scheduler = std::make_shared<Scheduler>();
+
+    std::vector<int> orderResult;
+
+    for (int i = 0; i < 10; ++i) {
+        auto task = [&orderResult, i, &scheduler](){
+            orderResult.emplace_back(i);
+
+            if (i == 5) {
+                scheduler->performFunctionInCocosThread([&orderResult](){
+                    orderResult.emplace_back(10);
+                });
+
+                scheduler->performFunctionInCocosThread([&orderResult](){
+                    orderResult.emplace_back(11);
+                });
+
+                scheduler->performFunctionInCocosThread([&orderResult](){
+                    orderResult.emplace_back(12);
+                });
+
+                usleep(100 * 1000);
+            }
+        };
+        scheduler->performFunctionInCocosThread(task);
+    }
+
+    scheduler->runFunctionsToBePerformedInCocosThread();
+    scheduler->runFunctionsToBePerformedInCocosThread();
+
+    const std::vector<int> expectedResult{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12};
+    EXPECT_EQ(orderResult, expectedResult);
+}