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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://chibios-gfx.com/license.html
*/
/**
* @file src/gqueue/gqueue.c
* @brief GQUEUE source file.
*/
#include "gfx.h"
#if GFX_USE_GQUEUE
#if GQUEUE_NEED_ASYNC
void gfxQueueASyncInit(gfxQueueASync *pqueue) {
pqueue->head = pqueue->tail = 0;
}
gfxQueueASyncItem *gfxQueueASyncGet(gfxQueueASync *pqueue) {
gfxQueueASyncItem *pi;
if (!pqueue->head) return 0;
gfxSystemLock();
if ((pi = pqueue->head))
pqueue->head = pi->next;
pi->next = 0;
gfxSystemUnlock();
return pi;
}
void gfxQueueASyncPut(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem) {
pitem->next = 0;
gfxSystemLock();
if (!pqueue->head) {
pqueue->head = pqueue->tail = pitem;
} else {
pqueue->tail->next = pitem;
pqueue->tail = pitem;
}
gfxSystemUnlock();
}
void gfxQueueASyncPush(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem) {
gfxSystemLock();
pitem->next = pqueue->head;
pqueue->head = pitem;
if (!pitem->next)
pqueue->tail = pitem;
gfxSystemUnlock();
}
void gfxQueueASyncRemove(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem) {
gfxQueueASyncItem *pi;
if (!pitem) return;
gfxSystemLock();
if (pqueue->head) {
if (pqueue->head == pitem) {
pqueue->head = pitem->next;
pitem->next = 0;
} else {
for(pi = pqueue->head; pi->next; pi = pi->next) {
if (pi->next == pitem) {
pi->next = pitem->next;
if (pqueue->tail == pitem)
pqueue->tail = pi;
pitem->next = 0;
break;
}
}
}
}
gfxSystemUnlock();
}
bool_t gfxQueueASyncIsEmpty(gfxQueueASync *pqueue) {
return pqueue->head == NULL;
}
bool_t gfxQueueASyncIsIn(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem) {
gfxQueueASyncItem *pi;
gfxSystemLock();
for(pi = pqueue->head; pi; pi = pi->next) {
if (pi == pitem) {
gfxSystemUnlock();
return TRUE;
}
}
gfxSystemUnlock();
return FALSE;
}
#endif
#if GQUEUE_NEED_GSYNC
void gfxQueueGSyncInit(gfxQueueGSync *pqueue) {
pqueue->head = pqueue->tail = 0;
gfxSemInit(&pqueue->sem, 0, MAX_SEMAPHORE_COUNT);
}
gfxQueueGSyncItem *gfxQueueGSyncGet(gfxQueueGSync *pqueue, delaytime_t ms) {
gfxQueueGSyncItem *pi;
if (!gfxSemWait(&pqueue->sem, ms)) return 0;
gfxSystemLock();
pi = pqueue->head;
pqueue->head = pi->next;
pi->next = 0;
gfxSytemUnlock();
return pi;
}
void gfxQueueGSyncPut(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem) {
pitem->next = 0;
gfxSystemLock();
if (!pqueue->head) {
pqueue->head = pqueue->tail = pitem;
} else {
pqueue->tail->next = pitem;
pqueue->tail = pitem;
}
gfxSystemUnlock();
gfxSemSignal(&pqueue->sem);
}
void gfxQueueGSyncPush(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem) {
gfxSystemLock();
pitem->next = pqueue->head;
pqueue->head = pitem;
if (!pitem->next)
pqueue->tail = pitem;
gfxSystemUnlock();
gfxSemSignal(&pqueue->sem);
}
void gfxQueueGSyncRemove(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem) {
gfxQueueGSyncItem *pi;
if (!pitem) return;
gfxSystemLock();
if (pqueue->head) {
if (pqueue->head == pitem) {
pqueue->head = pitem->next;
pitem->next = 0;
} else {
for(pi = pqueue->head; pi->next; pi = pi->next) {
if (pi->next == pitem) {
pi->next = pitem->next;
if (pqueue->tail == pitem)
pqueue->tail = pi;
pitem->next = 0;
break;
}
}
}
}
gfxSystemUnlock();
}
bool_t gfxQueueGSyncIsEmpty(gfxQueueGSync *pqueue) {
return pqueue->head == NULL;
}
bool_t gfxQueueGSyncIsIn(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem) {
gfxQueueGSyncItem *pi;
gfxSystemLock();
for(pi = pqueue->head; pi; pi = pi->next) {
if (pi == pitem) {
gfxSystemUnlock();
return TRUE;
}
}
gfxSystemUnlock();
return FALSE;
}
#endif
#if GQUEUE_NEED_FSYNC
void gfxQueueFSyncInit(gfxQueueFSync *pqueue) {
pqueue->head = pqueue->tail = 0;
gfxSemInit(&pqueue->sem, 0, MAX_SEMAPHORE_COUNT);
}
gfxQueueFSyncItem *gfxQueueFSyncGet(gfxQueueFSync *pqueue, delaytime_t ms) {
gfxQueueFSyncItem *pi;
if (!gfxSemWait(&pqueue->sem, ms)) return 0;
gfxSystemLock();
pi = pqueue->head;
pqueue->head = pi->next;
pi->next = 0;
gfxSytemUnlock();
gfxSemSignalI(&pi->sem);
gfxSemDestroy(&pi->sem);
return pi;
}
bool_t gfxQueueFSyncPut(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem, delaytime_t ms) {
gfxSemInit(&pitem->sem, 0, 1);
pitem->next = 0;
gfxSystemLock();
if (!pqueue->head) {
pqueue->head = pqueue->tail = pitem;
} else {
pqueue->tail->next = pitem;
pqueue->tail = pitem;
}
gfxSystemUnlock();
gfxSemSignal(&pqueue->sem);
return gfxSemWait(&pitem->sem, ms);
}
bool_t gfxQueueFSyncPush(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem, delaytime_t ms) {
gfxSemInit(&pitem->sem, 0, 1);
gfxSystemLock();
pitem->next = pqueue->head;
pqueue->head = pitem;
if (!pitem->next)
pqueue->tail = pitem;
gfxSystemUnlock();
gfxSemSignal(&pqueue->sem);
return gfxSemWait(&pitem->sem, ms);
}
void gfxQueueFSyncRemove(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem) {
gfxQueueFSyncItem *pi;
if (!pitem) return;
gfxSystemLock();
if (pqueue->head) {
if (pqueue->head == pitem) {
pqueue->head = pitem->next;
found:
pitem->next = 0;
gfxSystemUnlock();
gfxSemSignal(&pitem->sem);
gfxSemDestroy(&pitem->sem);
return;
}
for(pi = pqueue->head; pi->next; pi = pi->next) {
if (pi->next == pitem) {
pi->next = pitem->next;
if (pqueue->tail == pitem)
pqueue->tail = pi;
goto found;
}
}
}
gfxSystemUnlock();
}
bool_t gfxQueueFSyncIsEmpty(gfxQueueFSync *pqueue) {
return pqueue->head == NULL;
}
bool_t gfxQueueFSyncIsIn(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem) {
gfxQueueASyncItem *pi;
gfxSystemLock();
for(pi = pqueue->head; pi; pi = pi->next) {
if (pi == pitem) {
gfxSystemUnlock();
return TRUE;
}
}
gfxSystemUnlock();
return FALSE;
}
#endif
#endif /* GFX_USE_GQUEUE */
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