769c053d7c
Eliminates the warning. Test: treehugger Bug: 123758136 Change-Id: Ibe50261efc18d659a10129977342bc765a9ba9d5
58 lines
2.2 KiB
C++
58 lines
2.2 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HARDWARE_GNSS_THREADCREATIONWRAPPER_H
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#define ANDROID_HARDWARE_GNSS_THREADCREATIONWRAPPER_H
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#include <log/log.h>
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#include <pthread.h>
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#include <vector>
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typedef void (*threadEntryFunc)(void* ret);
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/*
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* This class facilitates createThreadCb methods in various GNSS interfaces to wrap
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* pthread_create() from libc since its function signature differs from what is required by the
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* conventional GNSS HAL. The arguments passed to pthread_create() need to be on heap and not on
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* the stack of createThreadCb.
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*/
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struct ThreadFuncArgs {
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ThreadFuncArgs(void (*start)(void*), void* arg) : fptr(start), args(arg) {}
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/* pointer to the function of type void()(void*) that needs to be wrapped */
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threadEntryFunc fptr;
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/* argument for fptr to be called with */
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void* args;
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};
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/*
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* This method is simply a wrapper. It is required since pthread_create() requires an entry
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* function pointer of type void*()(void*) and the GNSS hal requires as input a function pointer of
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* type void()(void*).
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*/
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void* threadFunc(void* arg);
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/*
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* This method is called by createThreadCb with a pointer to the vector that
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* holds the pointers to the thread arguments. The arg and start parameters are
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* first used to create a ThreadFuncArgs object which is then saved in the
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* listArgs parameters. The created ThreadFuncArgs object is then used to invoke
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* threadFunc() method which in-turn invokes pthread_create.
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*/
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pthread_t createPthread(const char* name, void (*start)(void*), void* arg,
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std::vector<std::unique_ptr<ThreadFuncArgs>> * listArgs);
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#endif
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