int vboxUhgsmiTst(PVBOXUHGSMI pUhgsmi, uint32_t cbBuf, uint32_t cNumCals, uint64_t * pTimeMs)
{
PVBOXUHGSMI_BUFFER pBuf;
int rc = pUhgsmi->pfnBufferCreate(pUhgsmi, cbBuf, VBOXUHGSMI_SYNCHOBJECT_TYPE_EVENT, NULL, &pBuf);
AssertRC(rc);
if (RT_SUCCESS(rc))
{
uint64_t TimeMs = VBOXDISPPROFILE_GET_TIME_MILLI();
do
{
VBOXUHGSMI_BUFFER_LOCK_FLAGS fFlags;
fFlags.Value = 0;
fFlags.bLockEntire = 1;
fFlags.bDiscard = 1;
void *pvLock;
rc = pBuf->pfnLock(pBuf, 0, cbBuf, fFlags, &pvLock);
AssertRC(rc);
if (!RT_SUCCESS(rc))
break;
rc = pBuf->pfnUnlock(pBuf);
AssertRC(rc);
if (!RT_SUCCESS(rc))
break;
VBOXUHGSMI_BUFFER_SUBMIT SubmitData;
SubmitData.pBuf = pBuf;
SubmitData.fFlags.Value = 0;
SubmitData.fFlags.bDoNotRetire = 1;
SubmitData.fFlags.bEntireBuffer = 1;
rc = pUhgsmi->pfnBufferSubmitAsynch(pUhgsmi, &SubmitData, 1);
AssertRC(rc);
if (!RT_SUCCESS(rc))
break;
DWORD dw = WaitForSingleObject(pBuf->hSynch, INFINITE);
Assert(dw == WAIT_OBJECT_0);
if (dw)
break;
} while (--cNumCals);
TimeMs = VBOXDISPPROFILE_GET_TIME_MILLI() - TimeMs;
*pTimeMs = TimeMs;
pBuf->pfnDestroy(pBuf);
}
return rc;
}
/* Same as crVBoxHGCMWriteExact, but combined with read of writeback data.
* This halves the number of HGCM calls we do,
* most likely crVBoxHGCMPollHost shouldn't be called at all now.
*/
static void
_crVBoxHGSMIWriteReadExact(CRConnection *conn, PCRVBOXHGSMI_CLIENT pClient, void *buf, uint32_t offBuffer, unsigned int len, bool bIsBuffer)
{
CRVBOXHGSMIWRITEREAD *parms = (CRVBOXHGSMIWRITEREAD*)_crVBoxHGSMICmdBufferLock(pClient, sizeof (*parms));
int rc;
VBOXUHGSMI_BUFFER_SUBMIT aSubmit[3];
PVBOXUHGSMI_BUFFER pBuf = NULL;
VBOXUHGSMI_BUFFER_LOCK_FLAGS fFlags;
// uint32_t cbBuffer;
parms->hdr.result = VERR_WRONG_ORDER;
parms->hdr.u32ClientID = conn->u32ClientID;
parms->hdr.u32Function = SHCRGL_GUEST_FN_WRITE_READ;
// parms->hdr.u32Reserved = 0;
parms->iBuffer = 1;
CRASSERT(!conn->pBuffer); //make sure there's no data to process
parms->iWriteback = 2;
parms->cbWriteback = 0;
_crVBoxHGSMICmdBufferUnlock(pClient);
if (!bIsBuffer)
{
void *pvBuf;
pBuf = _crVBoxHGSMIBufAlloc(pClient, len);
Assert(pBuf);
if (!pBuf)
return;
Assert(!offBuffer);
offBuffer = 0;
fFlags.Value = 0;
fFlags.bDiscard = 1;
fFlags.bWriteOnly = 1;
rc = pBuf->pfnLock(pBuf, 0, len, fFlags, &pvBuf);
AssertRC(rc);
if (RT_SUCCESS(rc))
{
memcpy(pvBuf, buf, len);
rc = pBuf->pfnUnlock(pBuf);
AssertRC(rc);
CRASSERT(RT_SUCCESS(rc));
}
else
{
_crVBoxHGSMIBufFree(pClient, pBuf);
return;
}
}
else
{
pBuf = (PVBOXUHGSMI_BUFFER)buf;
}
do
{
PVBOXUHGSMI_BUFFER pRecvBuffer = _crVBoxHGSMIRecvBufGet(pClient);
Assert(pRecvBuffer);
if (!pRecvBuffer)
return;
_crVBoxHGSMIFillCmd(&aSubmit[0], pClient, sizeof (*parms));
aSubmit[1].pBuf = pBuf;
aSubmit[1].offData = offBuffer;
aSubmit[1].cbData = len;
aSubmit[1].fFlags.Value = 0;
aSubmit[1].fFlags.bHostReadOnly = 1;
aSubmit[2].pBuf = pRecvBuffer;
aSubmit[2].offData = 0;
aSubmit[2].cbData = pRecvBuffer->cbBuffer;
aSubmit[2].fFlags.Value = 0;
rc = pClient->pHgsmi->pfnBufferSubmitAsynch(pClient->pHgsmi, aSubmit, 3);
AssertRC(rc);
if (RT_FAILURE(rc))
{
crWarning("pfnBufferSubmitAsynch failed with %d \n", rc);
break;
}
_crVBoxHGSMIWaitCmd(pClient);
parms = (CRVBOXHGSMIWRITEREAD *)_crVBoxHGSMICmdBufferLockRo(pClient, sizeof (*parms));
Assert(parms);
if (parms)
{
uint32_t cbWriteback = parms->cbWriteback;
rc = parms->hdr.result;
_crVBoxHGSMICmdBufferUnlock(pClient);
#ifdef DEBUG
parms = NULL;
#endif
if (RT_SUCCESS(rc))
{
if (cbWriteback)
{
void *pvData = _crVBoxHGSMIRecvBufData(pClient, cbWriteback);
Assert(pvData);
if (pvData)
{
conn->pBuffer = pvData;
conn->cbBuffer = cbWriteback;
_crVBoxHGSMIReceiveMessage(conn, pClient);
}
}
}
else if (VERR_BUFFER_OVERFLOW == rc)
{
PVBOXUHGSMI_BUFFER pOldBuf = pClient->pHGBuffer;
Assert(!pClient->pvHGBuffer);
CRASSERT(cbWriteback>pClient->pHGBuffer->cbBuffer);
crDebug("Reallocating host buffer from %d to %d bytes", conn->cbHostBufferAllocated, cbWriteback);
rc = pClient->pHgsmi->pfnBufferCreate(pClient->pHgsmi, CRVBOXHGSMI_PAGE_ALIGN(cbWriteback),
VBOXUHGSMI_SYNCHOBJECT_TYPE_NONE, NULL, &pClient->pHGBuffer);
AssertRC(rc);
CRASSERT(RT_SUCCESS(rc));
if (RT_SUCCESS(rc))
{
rc = pOldBuf->pfnDestroy(pOldBuf);
CRASSERT(RT_SUCCESS(rc));
_crVBoxHGSMIReadExact(conn, pClient/*, cbWriteback*/);
}
}
else
{
crWarning("SHCRGL_GUEST_FN_WRITE_READ (%i) failed with %x \n", len, rc);
}
}
else
{
crWarning("_crVBoxHGSMICmdBufferLockRo failed\n");
break;
}
} while (0);
if (!bIsBuffer)
_crVBoxHGSMIBufFree(pClient, pBuf);
}