53 lines
1.4 KiB
Plaintext
53 lines
1.4 KiB
Plaintext
from stdint import *
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from win32.win32base import *
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from win32.win32sync import (
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CRITICAL_SECTION,
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CONDITION_VARIABLE,
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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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class Condition:
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"""Windows condition variable backed primitive, internally bundled with CRITICAL_SECTION.
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Usage:
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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: CONDITION_VARIABLE
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cs: CRITICAL_SECTION
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def __init__(self):
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InitializeCriticalSection(&self.cs)
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InitializeConditionVariable(&self.cond_var)
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def wait(self, timeout_ms: ULONG = INFINITE) -> BOOL:
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return SleepConditionVariableCS(&self.cond_var, &self.cs, timeout_ms)
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def notify(self):
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WakeConditionVariable(&self.cond_var)
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def notify_all(self):
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WakeAllConditionVariable(&self.cond_var)
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def acquire(self):
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EnterCriticalSection(&self.cs)
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def release(self):
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LeaveCriticalSection(&self.cs)
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def __enter__(self) -> Condition*:
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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(&self.cs)
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