import _thread as thread lock = thread.allocate_lock() lock1 = thread.allocate_lock() def get_1(): print(lock.locked()) print(lock1.locked()) lock.acquire() print(lock.locked()) print(lock1.locked()) lock.release() print(lock.locked()) print(lock1.locked()) get_1() #加个函...
_thread模块中其他的函数如下: (1)_thread.allocate_lock():创建并返回一个lckobj对象。lckobj对象有以下3个方法: lckobj.acquire([flag]):用来捕获一个lock。 lcjobj.release():释放lock。 lckobj.locked():若对象成功锁定,则返回True;否则返回False。 (2)_thread.exit():拋出一个SystemExit,以终止线程的执...
_thread.allocate_lock()返回一个新Lock对象,即为一个新锁 lock.acquire() 相当于P操作,得到一个锁, lock.release()相当于V操作,释放一个锁 代码如下: import _thread,time,random dish=0 lock = _thread.allocate_lock() def producerFunction(): '''如果投的筛子比0.2大,则向盘子中增加一个苹果''' g...
nsec, lock):7print'start loop', nloop,'at:', ctime()8sleep(nsec)9print'loop', nloop,'done at:', ctime()10lock.release()#释放锁1112defmain():13print'starting at:', ctime()14locks =[]15nloops =range(len(loops))1617foriinnloops:18lock = thread.allocate_lock()#分配 L...
_thread.allocate_lock() //分配锁对象 _thread.exit() //线程退出 lock.acquire(waitflag=1, timeout=-1) //获取锁对象 lock.locked() //如果获取了锁对象返回true,否则返回false lock.release() //释放锁 其他方法 _thread.LockType() //锁对象类型 ...
lock.release() #释放锁 def main(): print 'starting at:',strftime('%Y-%m-%d %H:%M:%S') locks = [] nloops = range(len(loops)) #[0, 1] for i in nloops: lock = thread.allocate_lock() #获取LockType锁对象 lock.acquire() #取得每个锁(相当于"把锁锁上") ...
首先创建一个锁的列表,通过使用thread.allocate_lock()函数得到锁对象,然后通过acquire()方法取得(每个锁)。取得锁效果相当于‘把锁锁上’。一旦锁被锁上后,就可以把它添加到锁列表lock()中。下一个循环用于派生线程,每个线程会调用loop()函数,并传递循环号、睡眠时间以及用于该线程的锁的这几个参数。那么为什么...
_thread.allocate_lock方法返回一个Lock对象。Lock对象有三个常见的方法:acquire,release,locked acquire方法用来获取一个线程锁。release方法用来释放线程锁。locked方法用于获取一个Lock对象是否被锁定。 来举个例子吧,还是参照上面那个例子,做一点点改进。
(6)_thread.allocate_lock 代码语言:javascript 复制 import_thread a_lock=_thread.allocate_lock()witha_lock:print("a_lock is locked while this executes") (7)_thread.get_ident (8)_thread.stack_size (9)_thread.TIMEOUT_MAX (10)lock.acquire(waitflag=1,timeout=-1) ...
def test_tstate_lock(self): @cpython_only def test_done_event(self): # Test an implementation detail of Thread objects. started = _thread.allocate_lock() finish = _thread.allocate_lock() @@ -759,30 +760,19 @@ def f(): started.release() finish.acquire() time.sleep(0.01) # The ...