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what exactly happens when we call pthread_mutex_init ?

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what exactly happens when we call pthread_mutex_init ?
posted Dec 3, 2014 by Bheemappa G

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Could not understand the intention of question so just posting the man page -
"The pthread_mutex_init() function initialises the mutex referenced by mutex with attributes specified by attr. If attr is NULL, the default mutex attributes are used; the effect is the same as passing the address of a default mutex attributes object. Upon successful initialisation, the state of the mutex becomes initialised and unlocked."

Please specify the query in more detail :)
commented Dec 3, 2014 by Salil Agrawal

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