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85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
#pragma once
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#include <wut.h>
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#include "threadqueue.h"
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/**
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* \defgroup coreinit_cond Condition Variable
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* \ingroup coreinit
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*
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* Standard condition variable implementation.
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*
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* Similar to <a href="http://en.cppreference.com/w/cpp/thread/condition_variable">std::condition_variable</a>.
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* @{
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct OSCondition OSCondition;
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typedef struct OSMutex OSMutex;
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#define OS_CONDITION_TAG 0x634E6456u
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struct OSCondition
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{
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//! Should always be set to the value OS_CONDITION_TAG.
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uint32_t tag;
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//! Name set by OSInitCondEx.
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const char *name;
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UNKNOWN(4);
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//! Queue of threads currently waiting on condition with OSWaitCond.
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OSThreadQueue queue;
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};
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CHECK_OFFSET(OSCondition, 0x00, tag);
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CHECK_OFFSET(OSCondition, 0x04, name);
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CHECK_OFFSET(OSCondition, 0x0c, queue);
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CHECK_SIZE(OSCondition, 0x1c);
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/**
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* Initialise a condition variable structure.
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*/
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void
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OSInitCond(OSCondition *condition);
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/**
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* Initialise a condition variable structure with a name.
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*/
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void
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OSInitCondEx(OSCondition *condition,
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const char *name);
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/**
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* Sleep the current thread until the condition variable has been signalled.
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*
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* The mutex must be locked when entering this function.
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* Will unlock the mutex and then sleep, reacquiring the mutex when woken.
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*
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* Similar to <a href="http://en.cppreference.com/w/cpp/thread/condition_variable/wait">std::condition_variable::wait</a>.
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*/
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void
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OSWaitCond(OSCondition *condition,
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OSMutex *mutex);
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/**
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* Will wake up any threads waiting on the condition with OSWaitCond.
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*
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* Similar to <a href="http://en.cppreference.com/w/cpp/thread/condition_variable/notify_all">std::condition_variable::notify_all</a>.
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*/
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void
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OSSignalCond(OSCondition *condition);
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#ifdef __cplusplus
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}
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#endif
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/** @} */
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