コード例 #1
0
ファイル: DBGF.cpp プロジェクト: greg100795/virtualbox
/**
 * 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;
}
コード例 #2
0
/**
 * 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); });