fun tryAcquire()

in kotlinx-coroutines-core/common/src/sync/Semaphore.kt [151:168]

• 11 lines of code
• 5 McCabe index (conditional complexity)

    fun tryAcquire(): Boolean {
        while (true) {
            // Get the current number of available permits.
            val p = _availablePermits.value
            // Is the number of available permits greater
            // than the maximal one because of an incorrect
            // `release()` call without a preceding `acquire()`?
            // Change it to `permits` and start from the beginning.
            if (p > permits) {
                coerceAvailablePermitsAtMaximum()
                continue
            }
            // Try to decrement the number of available
            // permits if it is greater than zero.
            if (p <= 0) return false
            if (_availablePermits.compareAndSet(p, p - 1)) return true
        }
    }