NNG_CV_ALLOC(3supp)

NAME
nng_cv_alloc - allocate condition variable

SYNOPSIS

    #include <nng/nng.h>
    typedef struct nng_cv nng_cv;
    int nng_cv_alloc(nng_cv **cvp, nng_mtx *mtx);

DESCRIPTION

The nng_cv_alloc() function allocates a condition variable, using the mutex mtx, and returns it in cvp.

Every condition variable is associated with a mutex, which must be owned when a thread waits for the condition using nng_cv_wait() or nng_cv_until(). The mutex must also be owned when signaling the condition using the nng_cv_wake() or nng_cv_wake1() functions.

RETURN VALUES

This function returns 0 on success, and non-zero otherwise.

ERRORS

NNG_ENOMEM
    Insufficient free memory exists.

SEE ALSO

nng_cv_free(3supp), nng_cv_until(3supp), nng_cv_wait(3supp), nng_cv_wake(3supp), nng_cv_wake1(3supp), nng_mtx_alloc(3supp), nng_strerror(3), nng(7)