/**
* Sets the VMM Debug Command variable.
*
* @returns Previous command.
* @param pVM Pointer to the VM.
* @param enmCmd The command.
*/
DECLINLINE(DBGFCMD) dbgfR3SetCmd(PVM pVM, DBGFCMD enmCmd)
{
DBGFCMD rc;
if (enmCmd == DBGFCMD_NO_COMMAND)
{
Log2(("DBGF: Setting command to %d (DBGFCMD_NO_COMMAND)\n", enmCmd));
rc = (DBGFCMD)ASMAtomicXchgU32((uint32_t volatile *)(void *)&pVM->dbgf.s.enmVMMCmd, enmCmd);
VM_FF_CLEAR(pVM, VM_FF_DBGF);
}
else
{
Log2(("DBGF: Setting command to %d\n", enmCmd));
AssertMsg(pVM->dbgf.s.enmVMMCmd == DBGFCMD_NO_COMMAND, ("enmCmd=%d enmVMMCmd=%d\n", enmCmd, pVM->dbgf.s.enmVMMCmd));
rc = (DBGFCMD)ASMAtomicXchgU32((uint32_t volatile *)(void *)&pVM->dbgf.s.enmVMMCmd, enmCmd);
VM_FF_SET(pVM, VM_FF_DBGF);
VMR3NotifyGlobalFFU(pVM->pUVM, 0 /* didn't notify REM */);
}
return rc;
}
/**
* Queue an item.
* The item must have been obtained using PDMQueueAlloc(). Once the item
* have been passed to this function it must not be touched!
*
* @param pQueue The queue handle.
* @param pItem The item to insert.
* @thread Any thread.
*/
VMMDECL(void) PDMQueueInsert(PPDMQUEUE pQueue, PPDMQUEUEITEMCORE pItem)
{
Assert(VALID_PTR(pQueue) && pQueue->CTX_SUFF(pVM));
Assert(VALID_PTR(pItem));
#if 0 /* the paranoid android version: */
void *pvNext;
do
{
pvNext = ASMAtomicUoReadPtr((void * volatile *)&pQueue->CTX_SUFF(pPending));
ASMAtomicUoWritePtr((void * volatile *)&pItem->CTX_SUFF(pNext), pvNext);
} while (!ASMAtomicCmpXchgPtr(&pQueue->CTX_SUFF(pPending), pItem, pvNext));
#else
PPDMQUEUEITEMCORE pNext;
do
{
pNext = pQueue->CTX_SUFF(pPending);
pItem->CTX_SUFF(pNext) = pNext;
} while (!ASMAtomicCmpXchgPtr(&pQueue->CTX_SUFF(pPending), pItem, pNext));
#endif
if (!pQueue->pTimer)
{
PVM pVM = pQueue->CTX_SUFF(pVM);
Log2(("PDMQueueInsert: VM_FF_PDM_QUEUES %d -> 1\n", VM_FF_ISSET(pVM, VM_FF_PDM_QUEUES)));
VM_FF_SET(pVM, VM_FF_PDM_QUEUES);
ASMAtomicBitSet(&pVM->pdm.s.fQueueFlushing, PDM_QUEUE_FLUSH_FLAG_PENDING_BIT);
#ifdef IN_RING3
# ifdef VBOX_WITH_REM
REMR3NotifyQueuePending(pVM); /** @todo r=bird: we can remove REMR3NotifyQueuePending and let VMR3NotifyFF do the work. */
# endif
VMR3NotifyGlobalFFU(pVM->pUVM, VMNOTIFYFF_FLAGS_DONE_REM);
#endif
}
STAM_REL_COUNTER_INC(&pQueue->StatInsert);
STAM_STATS({ ASMAtomicIncU32(&pQueue->cStatPending); });