| /trunk/kernel/generic/include/synch/futex.h |
|---|
| 0,0 → 1,62 |
| /* |
| * Copyright (C) 2006 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __FUTEX_H__ |
| #define __FUTEX_H__ |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <synch/waitq.h> |
| #include <genarch/mm/page_ht.h> |
| #include <genarch/mm/page_pt.h> |
| /** Kernel-side futex structure. */ |
| struct futex { |
| uintptr_t paddr; /**< Physical address of the status variable. */ |
| waitq_t wq; /**< Wait queue for threads waiting for futex availability. */ |
| link_t ht_link; /**< Futex hash table link. */ |
| count_t refcount; /**< Number of tasks that reference this futex. */ |
| }; |
| extern void futex_init(void); |
| extern unative_t sys_futex_sleep_timeout(uintptr_t uaddr, uint32_t usec, int flags); |
| extern unative_t sys_futex_wakeup(uintptr_t uaddr); |
| extern void futex_cleanup(void); |
| #endif |
| /** @} |
| */ |
| /trunk/kernel/generic/include/synch/condvar.h |
|---|
| 0,0 → 1,61 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __CONDVAR_H__ |
| #define __CONDVAR_H__ |
| #include <arch/types.h> |
| #include <synch/waitq.h> |
| #include <typedefs.h> |
| #include <synch/synch.h> |
| struct condvar { |
| waitq_t wq; |
| }; |
| #define condvar_wait(cv,mtx) \ |
| _condvar_wait_timeout((cv),(mtx),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| #define condvar_wait_timeout(cv,mtx,usec) \ |
| _condvar_wait_timeout((cv),(mtx),(usec),SYNCH_FLAGS_NONE) |
| extern void condvar_initialize(condvar_t *cv); |
| extern void condvar_signal(condvar_t *cv); |
| extern void condvar_broadcast(condvar_t *cv); |
| extern int _condvar_wait_timeout(condvar_t *cv, mutex_t *mtx, uint32_t usec, int flags); |
| #endif |
| /** @} |
| */ |
| /trunk/kernel/generic/include/synch/rwlock.h |
|---|
| 0,0 → 1,80 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __RWLOCK_H__ |
| #define __RWLOCK_H__ |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <synch/mutex.h> |
| #include <synch/synch.h> |
| #include <synch/spinlock.h> |
| enum rwlock_type { |
| RWLOCK_NONE, |
| RWLOCK_READER, |
| RWLOCK_WRITER |
| }; |
| struct rwlock { |
| SPINLOCK_DECLARE(lock); |
| mutex_t exclusive; /**< Mutex for writers, readers can bypass it if readers_in is positive. */ |
| count_t readers_in; /**< Number of readers in critical section. */ |
| }; |
| #define rwlock_write_lock(rwl) \ |
| _rwlock_write_lock_timeout((rwl),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| #define rwlock_read_lock(rwl) \ |
| _rwlock_read_lock_timeout((rwl),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| #define rwlock_write_trylock(rwl) \ |
| _rwlock_write_lock_timeout((rwl),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NON_BLOCKING) |
| #define rwlock_read_trylock(rwl) \ |
| _rwlock_read_lock_timeout((rwl),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NON_BLOCKING) |
| #define rwlock_write_lock_timeout(rwl,usec) \ |
| _rwlock_write_lock_timeout((rwl),(usec),SYNCH_FLAGS_NONE) |
| #define rwlock_read_lock_timeout(rwl,usec) \ |
| _rwlock_read_lock_timeout((rwl),(usec),SYNCH_FLAGS_NONE) |
| extern void rwlock_initialize(rwlock_t *rwl); |
| extern void rwlock_read_unlock(rwlock_t *rwl); |
| extern void rwlock_write_unlock(rwlock_t *rwl); |
| extern int _rwlock_read_lock_timeout(rwlock_t *rwl, uint32_t usec, int flags); |
| extern int _rwlock_write_lock_timeout(rwlock_t *rwl, uint32_t usec, int flags); |
| #endif |
| /** @} |
| */ |
| /trunk/kernel/generic/include/synch/mutex.h |
|---|
| 0,0 → 1,64 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __MUTEX_H__ |
| #define __MUTEX_H__ |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <synch/semaphore.h> |
| #include <synch/synch.h> |
| struct mutex { |
| semaphore_t sem; |
| }; |
| #define mutex_lock(mtx) \ |
| _mutex_lock_timeout((mtx),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| #define mutex_trylock(mtx) \ |
| _mutex_lock_timeout((mtx),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NON_BLOCKING) |
| #define mutex_lock_timeout(mtx,usec) \ |
| _mutex_lock_timeout((mtx),(usec),SYNCH_FLAGS_NON_BLOCKING) |
| #define mutex_lock_active(mtx) \ |
| while (mutex_trylock((mtx)) != ESYNCH_OK_ATOMIC) |
| extern void mutex_initialize(mutex_t *mtx); |
| extern int _mutex_lock_timeout(mutex_t *mtx, uint32_t usec, int flags); |
| extern void mutex_unlock(mutex_t *mtx); |
| #endif |
| /** @} |
| */ |
| /trunk/kernel/generic/include/synch/semaphore.h |
|---|
| 0,0 → 1,64 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __SEMAPHORE_H__ |
| #define __SEMAPHORE_H__ |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <synch/waitq.h> |
| #include <synch/synch.h> |
| struct semaphore |
| { |
| waitq_t wq; |
| }; |
| #define semaphore_down(s) \ |
| _semaphore_down_timeout((s),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| #define semaphore_trydown(s) \ |
| _semaphore_down_timeout((s),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NON_BLOCKING) |
| #define semaphore_down_timeout(s,usec) \ |
| _semaphore_down_timeout((s),(usec),SYNCH_FLAGS_NONE) |
| extern void semaphore_initialize(semaphore_t *s, int val); |
| extern int _semaphore_down_timeout(semaphore_t *s, uint32_t usec, int flags); |
| extern void semaphore_up(semaphore_t *s); |
| #endif |
| /** @} |
| */ |
| /trunk/kernel/generic/include/synch/waitq.h |
|---|
| 0,0 → 1,76 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __WAITQ_H__ |
| #define __WAITQ_H__ |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <synch/spinlock.h> |
| #include <synch/synch.h> |
| #include <adt/list.h> |
| #define WAKEUP_FIRST 0 |
| #define WAKEUP_ALL 1 |
| /** Wait queue structure. */ |
| struct waitq { |
| /** Lock protecting wait queue structure. |
| * |
| * Must be acquired before T.lock for each T of type thread_t. |
| */ |
| SPINLOCK_DECLARE(lock); |
| int missed_wakeups; /**< Number of waitq_wakeup() calls that didn't find a thread to wake up. */ |
| link_t head; /**< List of sleeping threads for wich there was no missed_wakeup. */ |
| }; |
| #define waitq_sleep(wq) \ |
| waitq_sleep_timeout((wq),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| extern void waitq_initialize(waitq_t *wq); |
| extern int waitq_sleep_timeout(waitq_t *wq, uint32_t usec, int flags); |
| extern ipl_t waitq_sleep_prepare(waitq_t *wq); |
| extern int waitq_sleep_timeout_unsafe(waitq_t *wq, uint32_t usec, int flags); |
| extern void waitq_sleep_finish(waitq_t *wq, int rc, ipl_t ipl); |
| extern void waitq_wakeup(waitq_t *wq, bool all); |
| extern void _waitq_wakeup_unsafe(waitq_t *wq, bool all); |
| extern void waitq_interrupt_sleep(thread_t *t); |
| #endif |
| /** @} |
| */ |
| /trunk/kernel/generic/include/synch/spinlock.h |
|---|
| 0,0 → 1,121 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __SPINLOCK_H__ |
| #define __SPINLOCK_H__ |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <preemption.h> |
| #include <atomic.h> |
| #include <debug.h> |
| #ifdef CONFIG_SMP |
| struct spinlock { |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| char *name; |
| #endif |
| atomic_t val; |
| }; |
| /* |
| * SPINLOCK_DECLARE is to be used for dynamically allocated spinlocks, |
| * where the lock gets initialized in run time. |
| */ |
| #define SPINLOCK_DECLARE(slname) spinlock_t slname |
| /* |
| * SPINLOCK_INITIALIZE is to be used for statically allocated spinlocks. |
| * It declares and initializes the lock. |
| */ |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| #define SPINLOCK_INITIALIZE(slname) \ |
| spinlock_t slname = { \ |
| .name = #slname, \ |
| .val = { 0 } \ |
| } |
| #else |
| #define SPINLOCK_INITIALIZE(slname) \ |
| spinlock_t slname = { \ |
| .val = { 0 } \ |
| } |
| #endif |
| extern void spinlock_initialize(spinlock_t *sl, char *name); |
| extern int spinlock_trylock(spinlock_t *sl); |
| extern void spinlock_lock_debug(spinlock_t *sl); |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| # define spinlock_lock(x) spinlock_lock_debug(x) |
| #else |
| # define spinlock_lock(x) atomic_lock_arch(&(x)->val) |
| #endif |
| /** Unlock spinlock |
| * |
| * Unlock spinlock. |
| * |
| * @param sl Pointer to spinlock_t structure. |
| */ |
| static inline void spinlock_unlock(spinlock_t *sl) |
| { |
| ASSERT(atomic_get(&sl->val) != 0); |
| /* |
| * Prevent critical section code from bleeding out this way down. |
| */ |
| CS_LEAVE_BARRIER(); |
| atomic_set(&sl->val,0); |
| preemption_enable(); |
| } |
| #else |
| /* On UP systems, spinlocks are effectively left out. */ |
| #define SPINLOCK_DECLARE(name) |
| #define SPINLOCK_INITIALIZE(name) |
| #define spinlock_initialize(x,name) |
| #define spinlock_lock(x) preemption_disable() |
| #define spinlock_trylock(x) (preemption_disable(), 1) |
| #define spinlock_unlock(x) preemption_enable() |
| #endif |
| #endif |
| /** @} |
| */ |
| /trunk/kernel/generic/include/synch/synch.h |
|---|
| 0,0 → 1,57 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| /** @addtogroup sync |
| * @{ |
| */ |
| /** @file |
| */ |
| #ifndef __SYNCH_H__ |
| #define __SYNCH_H__ |
| #define SYNCH_NO_TIMEOUT 0 /**< Request with no timeout. */ |
| #define SYNCH_FLAGS_NONE 0 /**< No flags specified. */ |
| #define SYNCH_FLAGS_NON_BLOCKING (1<<0) /**< Non-blocking operation request. */ |
| #define SYNCH_FLAGS_INTERRUPTIBLE (1<<1) /**< Interruptible operation. */ |
| #define ESYNCH_WOULD_BLOCK 1 /**< Could not satisfy the request without going to sleep. */ |
| #define ESYNCH_TIMEOUT 2 /**< Timeout occurred. */ |
| #define ESYNCH_INTERRUPTED 4 /**< Sleep was interrupted. */ |
| #define ESYNCH_OK_ATOMIC 8 /**< Operation succeeded without sleeping. */ |
| #define ESYNCH_OK_BLOCKED 16 /**< Operation succeeded and did sleep. */ |
| #define SYNCH_FAILED(rc) ((rc) & (ESYNCH_WOULD_BLOCK | ESYNCH_TIMEOUT | ESYNCH_INTERRUPTED)) |
| #define SYNCH_OK(rc) ((rc) & (ESYNCH_OK_ATOMIC | ESYNCH_OK_BLOCKED)) |
| #endif |
| /** @} |
| */ |