Mutex

Mutex structure. Uses CRITICAL_SECTION under Windows, pthread_mutex_t under Posix

struct Mutex {

version(Windows)

CRITICAL_SECTION _mutex;

version(!Windows && Posix)

pthread_mutex_t _mutex;

}

Members

Functions

destroy int destroy(): Destroy the mutex
init int init(): Initialize the mutex
lock int lock(): Enter critical section. If the mutex is already locked, block the thread until it becomes available
tryLock int tryLock(): Try to enter critical section. Return immediately if the mutex is already locked
unlock int unlock(): Leave critical section

Variables

_mutex CRITICAL_SECTION _mutex;: Undocumented in source.
_mutex pthread_mutex_t _mutex;: Undocumented in source.

Examples

import dlib.core.memory;
import dlib.core.thread;

int x = 0;
Mutex mutex;
mutex.init();

void add()
{
    mutex.lock();
    int local = x;
    local = local + 1;
    x = local;
    mutex.unlock();
}

void sub()
{
    mutex.lock();
    int local = x;
    local = local - 1;
    x = local;
    mutex.unlock();
}

Thread[100] threads;

foreach(i; 0..threads.length/2)
{
    threads[i] = New!Thread(&add);
    threads[i].start();
}

foreach(i; threads.length/2..threads.length)
{
    threads[i] = New!Thread(&sub);
    threads[i].start();
}

foreach(t; threads)
{
    t.join();
}

assert(x == 0);

Mutex

Members

Functions

Variables

Examples

Meta

Source