forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
129 lines
5.0 KiB
129 lines
5.0 KiB
/* |
|
Copyright (c) 2012, Broadcom Europe Ltd |
|
All rights reserved. |
|
|
|
Redistribution and use in source and binary forms, with or without |
|
modification, are permitted provided that the following conditions are met: |
|
* Redistributions of source code must retain the above copyright |
|
notice, this list of conditions and the following disclaimer. |
|
* Redistributions in binary form must reproduce the above copyright |
|
notice, this list of conditions and the following disclaimer in the |
|
documentation and/or other materials provided with the distribution. |
|
* Neither the name of the copyright holder nor the |
|
names of its contributors may be used to endorse or promote products |
|
derived from this software without specific prior written permission. |
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
|
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY |
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
*/ |
|
|
|
/*============================================================================= |
|
VideoCore OS Abstraction Layer - low level thread support |
|
=============================================================================*/ |
|
|
|
#ifndef VCOS_LOWLEVEL_THREAD_H |
|
#define VCOS_LOWLEVEL_THREAD_H |
|
|
|
#ifdef __cplusplus |
|
extern "C" { |
|
#endif |
|
|
|
#include "interface/vcos/vcos_types.h" |
|
#ifndef VCOS_PLATFORM_H |
|
#include "vcos.h" |
|
#endif |
|
|
|
/** |
|
* \file |
|
* |
|
* This defines a low level thread API that is supported by *some* operating systems |
|
* and can be used to construct the regular "joinable thread" API on those operating |
|
* systems. |
|
* |
|
* Most clients will not need to use this code. |
|
* |
|
* \sa vcos_joinable_thread.h |
|
*/ |
|
|
|
/** |
|
* \brief Create a thread. |
|
* |
|
* This creates a thread which can be stopped either by returning from the |
|
* entry point function or by calling vcos_llthread_exit from within the entry |
|
* point function. The thread must be cleaned up by calling |
|
* vcos_llthread_delete. vcos_llthread_delete may or may not terminate the |
|
* thread. |
|
* |
|
* The preemptible parameter familiar from Nucleus is removed, as it is unused in |
|
* VideoCore code. Affinity is added, since we do use this. |
|
* |
|
* @param thread Filled in with thread instance |
|
* @param name An optional name for the thread. "" may be used (but |
|
* a name will aid in debugging). |
|
* @param entry Entry point |
|
* @param arg A single argument passed to the entry point function |
|
* @param stack Pointer to stack address |
|
* @param stacksz Size of stack in bytes |
|
* @param priority Priority of task, between VCOS_PRI_LOW and VCOS_PRI_HIGH |
|
* @param affinity CPU affinity |
|
* |
|
* @sa vcos_llthread_terminate vcos_llthread_delete |
|
*/ |
|
VCOSPRE_ VCOS_STATUS_T VCOSPOST_ vcos_llthread_create(VCOS_LLTHREAD_T *thread, |
|
const char *name, |
|
VCOS_LLTHREAD_ENTRY_FN_T entry, |
|
void *arg, |
|
void *stack, |
|
VCOS_UNSIGNED stacksz, |
|
VCOS_UNSIGNED priority, |
|
VCOS_UNSIGNED affinity, |
|
VCOS_UNSIGNED timeslice, |
|
VCOS_UNSIGNED autostart); |
|
|
|
/** |
|
* \brief Exits the current thread. |
|
*/ |
|
VCOSPRE_ void VCOSPOST_ vcos_llthread_exit(void); |
|
|
|
/** |
|
* \brief Delete a thread. This must be called to cleanup after |
|
* vcos_llthread_create. This may or may not terminate the thread. |
|
* It does not clean up any resources that may have been |
|
* allocated by the thread. |
|
*/ |
|
VCOSPRE_ void VCOSPOST_ vcos_llthread_delete(VCOS_LLTHREAD_T *thread); |
|
|
|
/** |
|
* \brief Return current lowlevel thread pointer. |
|
*/ |
|
VCOS_INLINE_DECL |
|
VCOS_LLTHREAD_T *vcos_llthread_current(void); |
|
|
|
/** |
|
* Resume a thread. |
|
*/ |
|
VCOS_INLINE_DECL |
|
void vcos_llthread_resume(VCOS_LLTHREAD_T *thread); |
|
|
|
VCOSPRE_ int VCOSPOST_ vcos_llthread_running(VCOS_LLTHREAD_T *thread); |
|
|
|
/** |
|
* \brief Create a VCOS_LLTHREAD_T for the current thread. This is so we can |
|
* have VCOS_LLTHREAD_Ts even for threads not originally created by VCOS (eg |
|
* the thread that calls vcos_init). |
|
*/ |
|
extern VCOS_STATUS_T _vcos_llthread_create_attach(VCOS_LLTHREAD_T *thread); |
|
|
|
#ifdef __cplusplus |
|
} |
|
#endif |
|
#endif |
|
|
|
|