#pthread programming

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Why do we need pthread_join?

In simple words pthread_join makes the calling thread wait till the newly created thread returns. How this helps? Let’s take an example as below:

#include #include #include #include /* Prototypes */ void * thread_func1(void *); void * thread_func2(void *); void manipVal(int); int var = 0; pthread_mutex_t m; void * thread_func1(void *arg) { printf("Hello World again\n"); } void * thread_func2(void…

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Difference between re-entrancy and thread-safety

Thread-safety of a function refers to the fact whether a function can be safely called from multiple threads simultaneously. Safety here means that even if multiple threads are executing the function simultaneously the data integrity is intact and is not intermingled.

To ensure thread-safety we can use tools like pthread-mutex, condition variables etc. Let’s take a look at the below program:

#inc…

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