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66 lines
2.0 KiB
66 lines
2.0 KiB
2 years ago
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#ifndef WIN32COND_H
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#define WIN32COND_H
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/**
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* pthread_cond API for Win32
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*
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* ACE(TM), TAO(TM), CIAO(TM), DAnCE>(TM), and CoSMIC(TM) (henceforth
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* referred to as "DOC software") are copyrighted by Douglas C. Schmidt
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* and his research group at Washington University, University of California,
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* Irvine, and Vanderbilt University, Copyright (c) 1993-2009, all rights
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* reserved.
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*
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* Since DOC software is open-source, freely available software, you are free
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* to use, modify, copy, and distribute--perpetually and irrevocably--the DOC
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* software source code and object code produced from the source, as well as
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* copy and distribute modified versions of this software. You must, however,
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* include this copyright statement along with any code built using DOC
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* software that you release.
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*
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* No copyright statement needs to be provided if you just ship binary
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* executables of your software products.
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*
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* See "Strategies for Implementing POSIX Condition Variables on Win32" at
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* http://www.cs.wustl.edu/~schmidt/win32-cv-1.html
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*/
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#include <windows.h>
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typedef struct
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{
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long waiters_count_;
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// Number of waiting threads.
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CRITICAL_SECTION waiters_count_lock_;
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// Serialize access to <waiters_count_>.
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HANDLE sema_;
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// Semaphore used to queue up threads waiting for the condition to
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// become signaled.
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HANDLE waiters_done_;
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// An auto-reset event used by the broadcast/signal thread to wait
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// for all the waiting thread(s) to wake up and be released from the
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// semaphore.
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size_t was_broadcast_;
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// Keeps track of whether we were broadcasting or signaling. This
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// allows us to optimize the code if we're just signaling.
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} win32_cond_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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int win32_cond_init(win32_cond_t *cv);
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int win32_cond_destroy(win32_cond_t *cv);
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int win32_cond_wait(win32_cond_t *cv, HANDLE *external_mutex);
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int win32_cond_signal(win32_cond_t *cv);
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int win32_cond_broadcast(win32_cond_t *cv);
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#ifdef __cplusplus
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}
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#endif
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#endif
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