54 lines
1.4 KiB
Python
54 lines
1.4 KiB
Python
import t, c
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from stdint import *
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from w32.win32base import *
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from w32.win32sync import (
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CRITICAL_SECTION,
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InitializeCriticalSection, EnterCriticalSection, LeaveCriticalSection, DeleteCriticalSection,
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InitializeConditionVariable, SleepConditionVariableCS,
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WakeConditionVariable, WakeAllConditionVariable
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)
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@t.Object
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class Condition:
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"""基于 Windows 条件变量的条件变量，内部包含 CRITICAL_SECTION。
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用法:
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cond: Condition = Condition()
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with cond:
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while not ready:
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cond.wait()
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cond.notify()
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"""
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cond_var: VOIDPTR
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cs: CRITICAL_SECTION
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def __init__(self):
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InitializeCriticalSection(c.Addr(self.cs))
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InitializeConditionVariable(c.Addr(self.cond_var))
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def wait(self, timeout_ms: ULONG = INFINITE) -> BOOL:
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return SleepConditionVariableCS(c.Addr(self.cond_var), c.Addr(self.cs), timeout_ms)
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def notify(self):
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WakeConditionVariable(c.Addr(self.cond_var))
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def notify_all(self):
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WakeAllConditionVariable(c.Addr(self.cond_var))
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def acquire(self):
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EnterCriticalSection(c.Addr(self.cs))
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def release(self):
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LeaveCriticalSection(c.Addr(self.cs))
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def __enter__(self) -> 'Condition' | t.CPtr:
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self.acquire()
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return self
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def __exit__(self):
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self.release()
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def delete(self):
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DeleteCriticalSection(c.Addr(self.cs))
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