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New gqueue calls to allow inserting an object into the queue at an arbitrary location.

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This commit is contained in:
inmarket 2014-05-09 21:31:16 +10:00
parent cf5867b33d
commit c475d69a9c
2 changed files with 100 additions and 0 deletions
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75
src/gqueue/gqueue.c
View file

@ -87,6 +87,30 @@ void _gqueueDeinit(void)
pqueue->tail = pitem;
}
void gfxQueueASyncInsert(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem, gfxQueueASyncItem *pafter) {
gfxSystemLock();
gfxQueueASyncInsertI(pqueue, pitem, pafter);
gfxSystemUnlock();
}
void gfxQueueASyncInsertI(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem, gfxQueueASyncItem *pafter) {
if (!pitem) return; // Safety
if (pafter && gfxQueueASyncIsInI(pqueue, pafter)) {
pitem->next = pafter->next;
pafter->next = pitem;
if (pqueue->tail == pafter)
pqueue->tail = pitem;
} else {
pitem->next = 0;
if (!pqueue->head) {
pqueue->head = pqueue->tail = pitem;
} else {
pqueue->tail->next = pitem;
pqueue->tail = pitem;
}
}
}
void gfxQueueASyncRemove(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem) {
gfxSystemLock();
gfxQueueASyncRemoveI(pqueue, pitem);
@ -201,6 +225,30 @@ void _gqueueDeinit(void)
gfxSemSignalI(&pqueue->sem);
}
void gfxQueueGSyncInsert(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem, gfxQueueASyncItem *pafter) {
gfxSystemLock();
gfxQueueGSyncInsertI(pqueue, pitem, pafter);
gfxSystemUnlock();
}
void gfxQueueGSyncInsertI(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem, gfxQueueASyncItem *pafter) {
if (!pitem) return; // Safety
if (pafter && gfxQueueGSyncIsInI(pqueue, pafter)) {
pitem->next = pafter->next;
pafter->next = pitem;
if (pqueue->tail == pafter)
pqueue->tail = pitem;
} else {
pitem->next = 0;
if (!pqueue->head) {
pqueue->head = pqueue->tail = pitem;
} else {
pqueue->tail->next = pitem;
pqueue->tail = pitem;
}
}
}
void gfxQueueGSyncRemove(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem) {
gfxSystemLock();
gfxQueueGSyncRemoveI(pqueue, pitem);
@ -312,6 +360,33 @@ void _gqueueDeinit(void)
return gfxSemWait(&pitem->sem, ms);
}
bool_t gfxQueueFSyncInsert(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem, gfxQueueASyncItem *pafter, delaytime_t ms) {
if (!pitem) return; // Safety
gfxSemInit(&pitem->sem, 0, 1);
gfxSystemLock();
if (pafter && gfxQueueGSyncIsInI(pqueue, pafter)) {
pitem->next = pafter->next;
pafter->next = pitem;
if (pqueue->tail == pafter)
pqueue->tail = pitem;
} else {
pitem->next = 0;
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);
}
void gfxQueueFSyncRemove(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem) {
gfxQueueFSyncItem *pi;

25
src/gqueue/sys_defs.h
View file

@ -198,6 +198,31 @@ void gfxQueueGSyncPushI(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem);
bool_t gfxQueueFSyncPush(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem, delaytime_t ms);
/* @} */
/**
* @brief Insert an item on the queue after the specified item.
* @return none for ASync and GSync queues; For FSync queues - FALSE on timeout, otherwise TRUE
*
* @param[in] pqueue A pointer to the queue
* @param[in] pitem A pointer to the queue item
* @param[in] pafter A pointer to the queue item this new item must be inserted after. If NULL or
* pafter can't be found in the queue, it puts the new item at the end of the queue.
* @param[in] ms The maxmimum time to wait for an item to be removed from the queue (only for FSync queues)
*
* @note FSync: Use a delay time of TIME_IMMEDIATE if you don't want to wait until the
* item is removed from the queue. Note that even if the timeout occurs - the item
* remains in the queue.
* @note The routines ending in "I" are interrupt/system/iclass level routines.
*
* @api
* @{
*/
void gfxQueueASyncInsert(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem, gfxQueueASyncItem *pafter);
void gfxQueueASyncInsertI(gfxQueueASync *pqueue, gfxQueueASyncItem *pitem, gfxQueueASyncItem *pafter);
void gfxQueueGSyncInsert(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem, gfxQueueASyncItem *pafter);
void gfxQueueGSyncInsertI(gfxQueueGSync *pqueue, gfxQueueGSyncItem *pitem, gfxQueueASyncItem *pafter);
bool_t gfxQueueFSyncInsert(gfxQueueFSync *pqueue, gfxQueueFSyncItem *pitem, gfxQueueASyncItem *pafter, delaytime_t ms);
/* @} */
/**
* @brief Remove an item from the queue.
* @note Removes the specified item from the queue where-ever it is in the queue