TinyThreads

TinyThreads is POSIX threads (pthreads) compatible tiny multi-threading library for 32-bit microcontrollers.

Currently, following processors are supported:

• Intel(Altera) Nios II
• Xilinx Zynq-7000 (Cortex-A9)
• Microchip PIC32 (MIPS32 Architecture)

マニュアル / Manuals

See TinyThreads wiki.

ライセンス / License

The MIT License

対応している機能 / Supported features

ほとんどの機能は <pthread.h> ヘッダファイルで提供されます。
Most features are provided in <pthread.h> header file.

スレッド操作とスケジューリング / Thread operation and scheduling

Interface	Name	Conforming to	Remarks
Type	pthread_t	POSIX.1-2001
Function	pthread_create()	POSIX.1-2001
Function	pthread_exit()	POSIX.1-2001
Function	pthread_join()	POSIX.1-2001
Function	pthread_detach()	POSIX.1-2001
Function	pthread_self()	POSIX.1-2001
Function	pthread_equal()	POSIX.1-2001
Type	pthread_attr_t	POSIX.1-2001
Function	pthread_attr_init()	POSIX.1-2001
Function	pthread_attr_destroy()	POSIX.1-2001
Function	pthread_attr_setdetachstate()	POSIX.1-2001
Function	pthread_attr_getdetachstate()	POSIX.1-2001
Function	pthread_attr_setschedparam()	POSIX.1-2001
Function	pthread_attr_getschedparam()	POSIX.1-2001
Function	pthread_attr_setschedpolicy()	POSIX.1-2001
Function	pthread_attr_getschedpolicy()	POSIX.1-2001
Function	pthread_attr_setstack()	POSIX.1-2001
Function	pthread_attr_getstack()	POSIX.1-2001
Function	pthread_attr_setstacksize()	POSIX.1-2001
Function	pthread_attr_getstacksize()	POSIX.1-2001
Function	sched_get_priority_max()	POSIX.1-2001	<sched.h>
Function	sched_get_priority_min()	POSIX.1-2001	<sched.h>
Function	shced_yield()	POSIX.1-2001	<sched.h>

ミューテックス / Mutex

Interface	Name	Conforming to	Remarks
Type	pthread_mutex_t	POSIX.1-2001
Macro	PTHREAD_MUTEX_INITIALIZER	POSIX.1-2001
Function	pthread_mutex_destroy()	POSIX.1-2001
Function	pthread_mutex_init()	POSIX.1-2001
Function	pthread_mutex_lock()	POSIX.1-2001
Function	pthread_mutex_trylock()	POSIX.1-2001
Function	pthread_mutex_unlock()	POSIX.1-2001

セマフォ / Semaphore

Interface	Name	Conforming to	Remarks
Type	sem_t	POSIX.1-2001	<semaphore.h>
Function	sem_destroy()	POSIX.1-2001	<semaphore.h>
Function	sem_init()	POSIX.1-2001	<semaphore.h>
Function	sem_post()	POSIX.1-2001	<semaphore.h> Can be used in ISR
Function	sem_wait()	POSIX.1-2001	<semaphore.h>
Function	sem_trywait()	POSIX.1-2001	<semaphore.h>

条件付き変数 / Conditional variables

Interface	Name	Conforming to	Remarks
Type	pthread_cond_t	POSIX.1-2001
Macro	PTHREAD_COND_INITIALIZER	POSIX.1-2001
Function	pthread_cond_destroy()	POSIX.1-2001
Function	pthread_cond_init()	POSIX.1-2001
Function	pthread_cond_broadcast()	POSIX.1-2001
Function	pthread_cond_signal()	POSIX.1-2001
Function	pthread_cond_wait()	POSIX.1-2001

1回きりの初期化 / Once control

Interface	Name	Conforming to	Remarks
Type	pthread_once_t	POSIX.1-2001
Macro	PTHREAD_ONCE_INIT	POSIX.1-2001
Function	pthread_once()	POSIX.1-2001

pthreads以外の機能 / Features outside of pthreads

以下のAPIは、本来pthreadsのカバーする範囲ではありませんが、マルチスレッド環境に対して効率的な実装をTinyThreadsが提供できるものです。 The following APIs are outside of pthreads but TinyThreads can provide a more effective implementation for multi-threading environment.

Interface	Name	Conforming to	Remarks
Function	sleep()	POSIX.1-2001	<unistd.h>
Function	usleep()	POSIX.1-2001	<unistd.h>

削除されている機能 / Dropped features

以下に挙げる機能はTinyThreadsが目指す「小さなマルチスレッド環境」に不要と判断され、 削除された機能です。原則として、将来も対応する予定はありません。
The features below are dropped because they are not useful in "tiny" multi-threading environment. As a general rule, they have never been supported in the future.

• pthread_atfork()
• pthread_cancel()
• pthread_key*()
• pthread_getspecific()
• pthread_setspecific()
• sem_open()
• sem_unlink()