thread3, will be released and it will start to execute its final stage and will call pthread_cond_signal(&cond2) and it will release the thread which is waiting on the condition of cond2, in this case, thread2. Now, the thread which was waiting on the condition of cond3, i.e. Once it finishes its final task, it will call pthread_cond_signal(&cond3). Once this function is called from the main thread, thread1, which was waiting on cond1, will be released and it will start executing further. main function every program has one main thread, in C/C++ this main thread is created automatically by the operating system once the control passes to the main method/function via the kernel) we are calling pthread_cond_signal(&cond1). To start the controlling process, we are releasing thread1 first. Hence, thread1 is being controlled from thread2. Here, we can allow thread1 to execute independently as its operation does not depend on any other thread, but, for example, for thread control, we are controlling all the threads here. As thread2 depends on the final outcome from thread3, thread3 controls the execution of thread2. That means that thread1 controls thread3. Hence, thread1, after inserting the data into a table, signals thread3 through the condition variable to go ahead with its final process. Suppose thread3 depends on the final output of thread1, which is going to be inserted in a table, and thread3 will read that information before creating its final result, and thread2 depends on the final outcome of thread3 to generate its final outcome. In the sections that are commented out, you can add your business logic which will execute in parallel mode. I am not adding any business logic here because this is just an example.
![pthread c sleep not declared pthread c sleep not declared](https://slidetodoc.com/presentation_image_h/e7fbe9fc414511fb2894de97dab13a21/image-27.jpg)
![pthread c sleep not declared pthread c sleep not declared](https://www.codegrepper.com/codeimages/how-to-sleep-in-c.png)
Here it locked mutex lock1 (so that other threads could not access the code) starts executing (code not added, just comments) and finally after completing its task waiting on cond1, likewise, the second thread locked mutex lock2, started executing its business logic, and, finally, waited on conditions from cond2 and the third thread locked mutex lock3, started executing its business logic and finally waited for the condition of cond3. With the below examples, you can schedule or control any number of threads in C and C++. In my first approach, I am using 3 mutexs and 3 condition variables. Compile++ thumb: webrtc <= event_timer_ĭ:/AS_Project/anyRTC-RTMP-OpenSource-master/Prj-Android/jni/toolchain/./././webrtc/system_wrappers/source/event_timer_: In constructor 'webrtc::EventTimerPosix::EventTimerPosix()':ĭ:/AS_Project/anyRTC-RTMP-OpenSource-master/Prj-Android/jni/toolchain/./././webrtc/system_wrappers/source/event_timer_posix.The first two examples are in C and the last one is in C++.
![pthread c sleep not declared pthread c sleep not declared](https://slidetodoc.com/presentation_image_h/e7fbe9fc414511fb2894de97dab13a21/image-7.jpg)
![pthread c sleep not declared pthread c sleep not declared](https://www.embedded.com/wp-content/uploads/contenteetimes-images-design-embedded-2014-0614-telemetrix-fig-3.jpg)
Try using LOCAL_STATIC_LIBRARIESĪndroid NDK: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of theĪndroid NDK: WARNING: Unsupported source file extensions in D:/AS_Project/anyRTC-RTMP-OpenSource-master/Prj-Android/jni/toolchain/./././webrtc/Android.mk for module webrtcĪndroid NDK: system_wrappers/source/trace_impl.h Error while executing process D:\PlatformSDKs\android-sdk-windows\ndk-bundle\ndk-build.cmd with arguments Īndroid NDK: WARNING:D:/AS_Project/anyRTC-RTMP-OpenSource-master/Prj-Android/jni/toolchain/./Android.mk:anyrtmp-jni: non-system libraries in linker flags: -lavformat -lavcodec -lavutilĪndroid NDK: This is likely to result in incorrect builds.