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/*
* Copyright (C) 2014 René Kijewski <rene.kijewski@fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup pthread
* @{
* @file
* @brief Thread cancellation features.
* @note None of these functions are implemented, yet.
* @note Do not include this header file directly, but pthread.h.
*/
#ifndef SYS__POSIX__PTHREAD_CANCELLCATION__H
#define SYS__POSIX__PTHREAD_CANCELLCATION__H
#ifdef __cplusplus
extern "C" {
#endif
#define PTHREAD_CANCEL_DISABLE 0
#define PTHREAD_CANCEL_ENABLE 1
#define PTHREAD_CANCEL_DEFERRED 0
#define PTHREAD_CANCEL_ASYNCHRONOUS 1
/**
* @brief Thread exit status after a canceled thread has terminated.
*/
#define PTHREAD_CANCELED ((void *) -2)
/**
* @brief Cancellation point are not supported, yet.
* @param[in] state Unused
* @param[out] oldstate Unused
* @returns `-1`, this invocation fails
*/
int pthread_setcancelstate(int state, int *oldstate);
/**
* @brief Cancellation point are not supported, yet.
* @param[in] type Unused
* @param[out] oldtype Unused
* @returns `-1`, this invocation fails
*/
int pthread_setcanceltype(int type, int *oldtype);
/**
* @brief Tells a pthread that it should exit.
* @note Cancellation points are not supported, yet.
* @details A pthread `th` can call pthread_testcancel().
* If pthread_cancel(th) was called before, it will exit then.
* @param[in] th Pthread to tell that it should cancel.
* @returns `-1`, this invocation fails
*/
int pthread_cancel(pthread_t th);
/**
* @brief Exit the current pthread if pthread_cancel() was called for this thread before.
* @details If pthread_cancel() called before, the current thread exits with with the code #PTHREAD_CANCELED.
*/
void pthread_testcancel(void);
#ifdef __cplusplus
}
#endif
#endif /* SYS__POSIX__PTHREAD_CANCELLCATION__H */
/**
* @}
*/
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