diff options
Diffstat (limited to 'libgloss/sparc_leon/kernel_mutex.c')
-rw-r--r-- | libgloss/sparc_leon/kernel_mutex.c | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/libgloss/sparc_leon/kernel_mutex.c b/libgloss/sparc_leon/kernel_mutex.c deleted file mode 100644 index a81344932..000000000 --- a/libgloss/sparc_leon/kernel_mutex.c +++ /dev/null @@ -1,107 +0,0 @@ -/* - * Copyright (c) 2011 Aeroflex Gaisler - * - * BSD license: - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - - -#include <asm-leon/queue.h> -/*#include <sys/fsu_pthread_queue.h>*/ -#include <asm-leon/contextswitch.h> -#include <asm-leon/leonbare_kernel.h> -#include <asm-leon/leonbare_debug.h> -#include <asm-leon/stack.h> -#include <asm-leon/leonstack.h> -#include <asm-leon/irq.h> - -leonbare_mutex_t -leonbare_mutex_init (leonbare_mutex_t m) -{ - m->mx_owner_cnt = 0; - m->mx_owner = 0; - LBTAILQ_INIT (&(m->mx_threads)); - - LEONBARE_PROTECT_KERNEL_START (); - { - LBTAILQ_INSERT_TAIL (LEONBARE_KR_ALLM, m, mx_allm); - } - LEONBARE_PROTECT_KERNEL_END (); - -} - -int -_self__leonbare_mutex_lock (leonbare_mutex_t m, int wait) -{ - int ret = LEONBARE_MUTEX_LOCK_OK; - leonbare_thread_t c; - - LEONBARE_PROTECT_MUTEXSTRUCT_START (m); - while (1) - { - if (LEONBARE_MUTEX_OWNER_GET (m) == 0) - { - LEONBARE_MUTEX_OWNER_SET (m, LEONBARE_KR_CURRENT); - LEONBARE_MUTEX_OWNER_CNT_SET (m, 0); - LBTAILQ_INSERT_TAIL (&c->th_mutex_locked, m, mx_locked); - ret = LEONBARE_MUTEX_LOCK_OK; - break; - } - else if (m->mx_owner == LEONBARE_KR_CURRENT) - { - m->mx_owner_cnt++; - ret = LEONBARE_MUTEX_LOCK_OK; - break; - } - LBTAILQ_INSERT_TAIL (&m->mx_threads, c, th_mutex); - current_suspend (); - } - LEONBARE_PROTECT_MUTEXSTRUCT_END (m); - return ret; -} - -int -leonbare_mutex_unlock (leonbare_mutex_t m) -{ - int ret = LEONBARE_MUTEX_UNLOCK_ERROR; - leonbare_thread_t c, h; - - LEONBARE_PROTECT_MUTEXSTRUCT_START (m); - { - c = LEONBARE_KR_CURRENT; - if (m->mx_owner != c) - { - ret = LEONBARE_MUTEX_UNLOCK_OK; - } - else if (m->mx_owner == c && m->mx_owner_cnt) - { - m->mx_owner_cnt--; - ret = LEONBARE_MUTEX_UNLOCK_OK; - } - else if ((h = LBTAILQ_FIRST (&m->mx_threads))) - { - LBTAILQ_REMOVE (&m->mx_threads, h, th_mutex); - leonbare_thread_resume (h); - ret = LEONBARE_MUTEX_UNLOCK_OK; - } - } - LEONBARE_PROTECT_MUTEXSTRUCT_END (m); - return ret; -} |