tests/msgq/1.0/ITestMsgQ.hal

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * 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.
 */

package android.hardware.tests.msgq@1.0;

interface ITestMsgQ {
    /*
     * This method requests the service to set up Synchronous read/write
     * wait-free FMQ with the client as reader.
     * @return ret Will be 0 if the setup is successful.
     * @return mqDesc This structure describes the FMQ that was
     * set up by the service. Client can use it to set up the FMQ at its end.
     */
    configureFmqSyncReadWrite()
        generates(int32_t ret, MQDescriptorSync mqDesc);

    /*
     * This method request the service to write into the FMQ.
     * @param count Number to messages to write.
     * @ret Number of messages succesfully written.
     */
    requestWrite(int32_t count) generates(int32_t ret);

    /*
     * This method request the service to read from the FMQ.
     * @param count Number to messages to read.
     * @ret Number of messages succesfully read.
     */
    requestRead(int32_t count) generates(int32_t ret);
};