unlockShared

Function parameters

Parameters

rwl:*DefaultRwLock

Single-threaded applications use this for deadlock checks in

Types

SingleThreadedRwLock: Single-threaded applications use this for deadlock checks in
PthreadRwLock
DefaultRwLock

Attempts to obtain exclusive lock ownership.

Functions

tryLock: Attempts to obtain exclusive lock ownership.
lock: Blocks until exclusive lock ownership is acquired.
unlock: Releases a held exclusive lock.
tryLockShared: Attempts to obtain shared lock ownership.
lockShared: Obtains shared lock ownership.
unlockShared: Releases a held shared lock.

Source

Implementation

pub fn unlockShared(rwl: *DefaultRwLock) void {
    const state = @atomicRmw(usize, &rwl.state, .Sub, READER, .seq_cst);

    if ((state & READER_MASK == READER) and (state & IS_WRITING != 0))
        rwl.semaphore.post();
}