[janderwald] 40375: - Check if allocation of work item succeeded - Thanks Ged, aicom - Fix leaking of a work item on close event / irp stream run out

Author: janderwald
Date: Sun Apr  5 20:39:51 2009
New Revision: 40375

URL: http://svn.reactos.org/svn/reactos?rev=40375&view=rev
Log:
- Check if allocation of work item succeeded - Thanks Ged, aicom
- Fix leaking of a work item on close event / irp stream run out

Modified:
    trunk/reactos/drivers/wdm/audio/backpln/portcls/adapter.c
    trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.c

Modified: trunk/reactos/drivers/wdm/audio/backpln/portcls/adapter.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/wdm/audio/backpln/…
==============================================================================
--- trunk/reactos/drivers/wdm/audio/backpln/portcls/adapter.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/wdm/audio/backpln/portcls/adapter.c [iso-8859-1] Sun Apr  5
20:39:51 2009
@@ -135,6 +135,13 @@
     /* allocate create item */
     portcls_ext->CreateItems = AllocateItem(NonPagedPool, MaxObjects *
sizeof(KSOBJECT_CREATE_ITEM), TAG_PORTCLASS);
 
+    if (!portcls_ext->CreateItems)
+    {
+        /* not enough resources */
+        IoDeleteDevice(fdo);
+        return STATUS_INSUFFICIENT_RESOURCES;
+    }
+
     /* store the physical device object */
     portcls_ext->PhysicalDeviceObject = PhysicalDeviceObject;
     /* set up the start device function */
@@ -152,6 +159,17 @@
     /* allocate work item */
     portcls_ext->WorkItem = IoAllocateWorkItem(fdo);
 
+    if (!portcls_ext->WorkItem)
+    {
+        /* not enough resources */
+        FreeItem(portcls_ext->CreateItems, TAG_PORTCLASS);
+        /* delete created fdo */
+        IoDeleteDevice(fdo);
+        /* return error code */
+        return STATUS_INSUFFICIENT_RESOURCES;
+    }
+
+
     /* allocate the device header */
     status = KsAllocateDeviceHeader(&portcls_ext->KsDeviceHeader, MaxObjects,
portcls_ext->CreateItems);
     /* did we succeed */
@@ -159,6 +177,8 @@
     {
         /* free previously allocated create items */
         FreeItem(portcls_ext->CreateItems, TAG_PORTCLASS);
+        /* free allocated work item */
+        IoFreeWorkItem(portcls_ext->WorkItem);
         /* delete created fdo */
         IoDeleteDevice(fdo);
         /* return error code */
@@ -180,6 +200,8 @@
         KsFreeDeviceHeader(portcls_ext->KsDeviceHeader);
         /* free previously allocated create items */
         FreeItem(portcls_ext->CreateItems, TAG_PORTCLASS);
+        /* free allocated work item */
+        IoFreeWorkItem(portcls_ext->WorkItem);
         /* delete created fdo */
         IoDeleteDevice(fdo);
         /* return error code */

Modified: trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/wdm/audio/backpln/…
==============================================================================
--- trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.c [iso-8859-1]
(original)
+++ trunk/reactos/drivers/wdm/audio/backpln/portcls/pin_wavecyclic.c [iso-8859-1] Sun Apr 
5 20:39:51 2009
@@ -215,20 +215,20 @@
     IN PVOID  SystemArgument1,
     IN PVOID  SystemArgument2)
 {
+   PDEVICE_OBJECT DeviceObject;
+   PPCLASS_DEVICE_EXTENSION DeviceExtension;
    IPortPinWaveCyclicImpl * This = (IPortPinWaveCyclicImpl*)DeferredContext;
-   PIO_WORKITEM WorkItem;
 
     if (This->IrpQueue->lpVtbl->NumMappings(This->IrpQueue))
         return;
 
-    WorkItem = IoAllocateWorkItem(GetDeviceObject(This->Port));
-    if (!WorkItem)
-        return;
-
-    IoQueueWorkItem(WorkItem, StopStreamWorkerRoutine, DelayedWorkQueue, (PVOID)This);
-}
-
-
+    /* Get device object */
+    DeviceObject = GetDeviceObject(This->Port);
+    /* Get device extension */
+    DeviceExtension = (PPCLASS_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
+    /* queue the work item */
+    IoQueueWorkItem(DeviceExtension->WorkItem, StopStreamWorkerRoutine,
DelayedWorkQueue, (PVOID)This);
+}
 
 static
 VOID
@@ -248,7 +248,6 @@
         KeInsertQueueDpc(&This->Dpc, NULL, NULL);
         return;
     }
-
 
     Status = This->Stream->lpVtbl->GetPosition(This->Stream, &Position);
     DPRINT("Position %u Buffer %p BufferSize %u ActiveIrpOffset %u\n",
Position, Buffer, This->CommonBufferSize, BufferSize);
@@ -692,23 +691,26 @@
     IN PDEVICE_OBJECT DeviceObject,
     IN PIRP Irp)
 {
-    PIO_WORKITEM WorkItem;
-
+    PPCLASS_DEVICE_EXTENSION DeviceExtension;
     IPortPinWaveCyclicImpl * This = (IPortPinWaveCyclicImpl*)iface;
 
     if (This->Stream)
     {
-        WorkItem = IoAllocateWorkItem(DeviceObject);
-        if (WorkItem)
+        if (Irp)
         {
-            if (Irp)
-            {
-                This->CloseIrp = Irp;
-                IoMarkIrpPending(Irp);
-                Irp->IoStatus.Information = 0;
-                Irp->IoStatus.Status = STATUS_PENDING;
-            }
-            IoQueueWorkItem(WorkItem, CloseStreamRoutine, DelayedWorkQueue,
(PVOID)This);
+            This->CloseIrp = Irp;
+            IoMarkIrpPending(Irp);
+            Irp->IoStatus.Information = 0;
+            Irp->IoStatus.Status = STATUS_PENDING;
+        }
+        /* Get device extension */
+        DeviceExtension = (PPCLASS_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
+        /* defer work item */
+        IoQueueWorkItem(DeviceExtension->WorkItem, CloseStreamRoutine,
DelayedWorkQueue, (PVOID)This);
+
+        if (Irp)
+        {
+            /* The WaveCyclic filter passes close request with NULL / IRP */
             return STATUS_PENDING;
         }
     }