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Return the
thread identifier
of the current thread. This is a nonzero integer. Its value has
no direct meaning; it is intended as a magic cookie to be used e.g. to index a dictionary of
thread-specific data. Thread identifiers may be recycled when a thread exits and another
thread is created.
_thread.stack_size([size])
Return the thread stack size (in bytes) used when creating new threads. The optional size
argument specifies the stack size to be used for subsequently created threads, and must be
0
(use platform or configured default) or a positive integer value of at least
4096
(4KiB).
4KiB is currently the minimum supported stack size value to guarantee sufficient stack space
for the interpreter itself.
Objects
_thread.LockType
This is the type of lock objects.
class Lock – used for synchronisation between threads
Methods
Lock objects have the following methods:
lock.acquire(waitflag=1, timeout=-1)
Without any optional argument, this method acquires the lock unconditionally, if necessary
waiting until it is released by another thread (only one thread at a time can acquire a lock —
that’s their reason for existence).
If the integer
waitflag
argument is present, the action depends on its value: if it is zero, the
lock is only acquired if it can be acquired immediately without waiting, while if it is nonzero,
the lock is acquired unconditionally as above.
If the floating-point timeout argument is present and positive, it specifies the maximum wait
time in seconds before returning. A negative timeout argument specifies an unbounded wait.
You cannot specify a timeout if
waitflag
is zero.
The return value is
True
if the lock is acquired successfully,
False
if not.
lock.release()
Releases the lock. The lock must have been acquired earlier, but not necessarily by the
same thread.
5.3.19 _thread
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