pi mutex interface

Signed-off-by: liuchungang <liuchungang@hisilicon.com>

bundle.json

@@ -63,7 +63,8 @@
                     "header": {
                         "header_base": "//foundation/resourceschedule/qos_manager/interfaces/inner_api/",
                         "header_files": [
-                            "qos.h"
+                            "qos.h",
+                            "pi_mutex.h"
                         ]
                     },
                     "name": "//foundation/resourceschedule/qos_manager/qos:qos"

interfaces/inner_api/pi_mutex.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef QOS_PI_MUETX_H
+#define QOS_PI_MUETX_H
+
+#include <pthread.h>
+#include <mutex>
+#include <type_traits>
+
+namespace OHOS {
+namespace QOS {
+class PiMutex : public std::mutex {
+public:
+    PiMutex()
+    {
+        if constexpr (std::is_same_v<std::mutex::native_handle_type, pthread_mutex_t*>) {
+            std::mutex::native_handle_type handle = std::mutex::native_handle();
+            pthread_mutexattr_t attr;
+            pthread_mutexattr_init(&attr);
+            pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
+            pthread_mutex_init(handle, &attr);
+        }
+    }
+
+    ~PiMutex() = default;
+
+    PiMutex(const PiMutex&) = delete;
+    PiMutex& operator=(const PiMutex&) = delete;
+};
+} // namespace QOS
+} // namespace OHOS
+
+#endif // QOS_PI_MUETX_H