#Array pthread c iso
After I implemented the changes you suggested, I get now again an error:įefat.c: In function ' int fefat(void*)':įefat.c:20:34: error: ISO C++ forbids casting to an array type 'FatCase* 'įefat.c:20:34: error: array must be initialized with a brace-enclosed initializer This example uses a data structure that contains multiple arrays of data.
2012 / includeBut this has no direct bearing on the problem at hand.Īs far as I understand my problem I am not able to send the start address of my array as a void pointer via pthread_create to my thread function in a way, that I later can cast it back to my array in the thread function. Threads A, B, and C are created by the main thread. / A Pthreads version of a program to sum up the elements of an array. In your case, the stuff is your 2D array. If you use a thread class, you contain the stuff lying around and it get's declared where it's needed. Without careful management, the thread's stuff get's mixed with the other stuff and it gets confusin very quickly. As you've discovered, a thread often needs "stuff" to work with.
There's also the general point that you shouldn't be using thread functions, but thread classes. Having said that, it should be clear that you need to pass fc to pthread_create. It's a similar layout to argv that's passed into main. Have you thought about the layout of your 2D array? It's not really a 2D array at all it's an array of array pointers, so the memory layout isn't contiguous.
Image includeIt saves a lot of guessing on the reader's part. Program to find the maximum and minimum element in an array using threads. Second, if you use variables in presenting a problem, it's often helpful to show the type. In this example, we assume that the shared buffer buffer is just an array of. Write a program with one thread function define an array with 5 elements as a global variable. using namespace std // maximum size of matrix. CPP Program to multiply two matrix using pthreads. The second parameter is used to set some attributes for the new thread. The first parameter is used by pthreadcreate() to supply the program with information about the thread. Compile in linux using following code: g++ -pthread programname.cpp. A few notes should be mentioned about this program: Note that the main program is also a thread, so it executes the doloop() function in parallel to the thread it creates.
#Array pthread c full
When you could easily publishe the full error and indicate what line number it occurred on. In GNU/Linux, the pthread functions are not included in the standard C. NOTE It is advised to execute the program in linux based system. First, as a rule, it's not as helpful to write Error conversion from FatCase** to.
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