Adelsbach Enhanced Threading Library

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Enhanced Threading Library > rwmtx_rdlock (3)
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rwmtx_rdlock(3) Library Functions Manual rwmtx_rdlock(3)

rwmtx_rdlockacquire a read lock

library “threads”
#include <threadse.h>

int
rwmtx_rdlock(rwmtx_t *rw);

The function () will acquire a read lock on the given read/write lock rw. If a write lock is acquired on the lock, the thread will be stalled until the read lock can be acquired.

A thread can hold multiple read locks at the same time, rwmtx_unlock(3) must be called for each acquired lock.

Upon success rwmtx_rdlock() will return thrd_success. In case of error thrd_error will be returned.

rwmtx_init(3) rwmtx_destroy(3) rwmtx_wrlock(3) rwmtx_tryrdlock(3) rwmtx_trywrlock(3) rwmtx_timedrdlock(3) rwmtx_timedwrlock(3) rwmtx_unlock(3)

The rwmtx_rdlock() function first appeared in the Adelsbach Enhanced Threading Library.

Jan Adelsbach <jan@jadelsbach.de>

May 9, 2020 Debian