1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.hardware.tests.foo@1.0; 18 19 //import IFoo; 20 21 interface IFooCallback { 22 //heyItsMe(IFoo cb); 23 heyItsYou(IFooCallback cb); 24 heyItsYouIsntIt(IFooCallback cb) generates (bool yesOrNo); 25 oneway heyItsTheMeaningOfLife(uint8_t tmol); 26 27 // The next two methods are for instrumentation purposes. 28 29 // Block the caller for up to ns nanosesonds and return the number 30 // of nanoseconds it took to invoke each of the three methods 31 // above, both from the point of view of the caller (callerBlockedNs) and 32 // from the point of view of IFooCallback itself (timeNs). timeNs measures 33 // how long a method's body took to execute, regardless of whether the 34 // method was oneway or two-way. callerBlockedNs reflects the amount of 35 // time the caller was blocked before the method returned. For two-way 36 // methods, callerBlockedNs should be slightly higher than timeNs. For 37 // one-way calls, callerBlockedNs will be very low, and unrelated to 38 // timeNs. 39 40 struct InvokeInfo { 41 bool invoked; 42 int64_t callerBlockedNs; 43 int64_t timeNs; 44 }; 45 reportResults(int64_t ns) generates (int64_t leftNs, InvokeInfo[3] invokeInfo); 46 47 // This method is used by the caller of IFooCallback to tell IFooCallback 48 // how long the three methods above took, from the point of view of that 49 // caller. IFooCallback adds this information to the one reported by 50 // reportResults in InvokeInfo. 51 52 youBlockedMeFor(int64_t[3] callerBlockedInfo); 53 }; 54
