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// Copyright (c) rAthena Project (www.rathena.org) - Licensed under GNU GPL
// For more information, see LICENCE in the main folder
#pragma once
#ifndef _rA_THREAD_H_
#define _rA_THREAD_H_
#include "../common/cbasetypes.h"
typedef struct rAthread *rAthread;
typedef void *(*rAthreadProc)(void *);
typedef enum RATHREAD_PRIO {
RAT_PRIO_LOW = 0,
RAT_PRIO_NORMAL,
RAT_PRIO_HIGH
} RATHREAD_PRIO;
/**
* Creates a new Thread
*
* @param entyPoint - entryProc,
* @param param - general purpose parameter, would be given as parameter to the thread's entrypoint.
*
* @return not NULL if success
*/
rAthread rathread_create(rAthreadProc entryPoint, void *param);
/**
* Creates a new Thread (with more creation options)
*
* @param entyPoint - entryProc,
* @param param - general purpose parameter, would be given as parameter to the thread's entrypoint
* @param szStack - stack Size in bytes
* @param prio - Priority of the Thread @ OS Scheduler..
*
* @return not NULL if success
*/
rAthread rathread_createEx(rAthreadProc entryPoint, void *param, size_t szStack, RATHREAD_PRIO prio);
/**
* Destroys the given Thread immediatly
*
* @note The Handle gets invalid after call! dont use it afterwards.
*
* @param handle - thread to destroy.
*/
void rathread_destroy(rAthread handle);
/**
* Returns the thread handle of the thread calling this function
*
* @note this wont work @ programms main thread
* @note the underlying implementation might not perform very well, cache the value received!
*
* @return not NULL if success
*/
rAthread rathread_self();
/**
* Returns own thrad id (TID)
*
* @note this is an unique identifier for the calling thread, and
* depends on platfrom / compiler, and may not be the systems Thread ID!
*
* @return -1 when fails, otherwise >= 0
*/
int rathread_get_tid();
/**
* Waits for the given thread to terminate
*
* @param handle - thread to wait (join) for
* @param out_Exitcode - [OPTIONAL] - if given => Exitcode (value) of the given thread - if it's terminated
*
* @return true - if the given thread has been terminated.
*/
bool rathread_wait(rAthread handle, void* *out_exitCode);
/**
* Sets the given PRIORITY @ OS Task Scheduler
*
* @param handle - thread to set prio for
* @param rio - the priority (RAT_PRIO_LOW ... )
*/
void rathread_prio_set(rAthread handle, RATHREAD_PRIO prio);
/**
* Gets the current Prio of the given trhead
*
* @param handle - the thread to get the prio for.
*/
RATHREAD_PRIO rathread_prio_get(rAthread handle);
/**
* Tells the OS scheduler to yield the execution of the calling thread
*
* @note: this will not "pause" the thread,
* it just allows the OS to spent the remaining time
* of the slice to another thread.
*/
void rathread_yield();
void rathread_init();
void rathread_final();
#endif
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