From cb10422980a9b9796fbe79ab3964d4c2701ba983 Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Tue, 18 Nov 2003 20:08:30 +0000
Subject: [PATCH] Initialize error log worker.

svn path=/trunk/; revision=6690
---
 reactos/ntoskrnl/io/errlog.c | 107 ++++++++++++++++++++++++++++++++---
 reactos/ntoskrnl/io/iomgr.c  |   3 +-
 2 files changed, 101 insertions(+), 9 deletions(-)

diff --git a/reactos/ntoskrnl/io/errlog.c b/reactos/ntoskrnl/io/errlog.c
index 1f02ef65f28..d31514480f0 100644
--- a/reactos/ntoskrnl/io/errlog.c
+++ b/reactos/ntoskrnl/io/errlog.c
@@ -1,4 +1,4 @@
-/* $Id: errlog.c,v 1.11 2003/08/14 18:30:28 silverblade Exp $
+/* $Id: errlog.c,v 1.12 2003/11/18 20:08:30 ekohl Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -41,6 +41,7 @@ typedef struct _IO_ERROR_LOG_PACKET
 
 typedef struct _ERROR_LOG_ENTRY
 {
+  LIST_ENTRY Entry;
   ULONG EntrySize;
 } ERROR_LOG_ENTRY, *PERROR_LOG_ENTRY;
 
@@ -50,6 +51,11 @@ typedef struct _ERROR_LOG_ENTRY
 static KSPIN_LOCK IopAllocationLock;
 static ULONG IopTotalLogSize;
 
+static KSPIN_LOCK IopLogListLock;
+static LIST_ENTRY IopLogListHead;
+
+static BOOLEAN IopLogWorkerRunning = FALSE;
+
 
 /* FUNCTIONS *****************************************************************/
 
@@ -59,10 +65,76 @@ IopInitErrorLog (VOID)
   IopTotalLogSize = 0;
   KeInitializeSpinLock (&IopAllocationLock);
 
+  KeInitializeSpinLock (&IopLogListLock);
+  InitializeListHead (&IopLogListHead);
+
   return STATUS_SUCCESS;
 }
 
 
+static VOID STDCALL
+IopLogWorker (PVOID Parameter)
+{
+  PERROR_LOG_ENTRY LogEntry;
+  KIRQL Irql;
+
+  DPRINT1 ("IopLogWorker() called\n");
+
+  /* Release the work item */
+  ExFreePool (Parameter);
+
+
+  /* FIXME: Open the error log port */
+
+
+  while (TRUE)
+    {
+      /* Remove last entry from the list */
+      KeAcquireSpinLock (&IopLogListLock,
+			 &Irql);
+
+      if (!IsListEmpty(&IopLogListHead))
+	{
+	  LogEntry = CONTAINING_RECORD (IopLogListHead.Blink,
+					ERROR_LOG_ENTRY,
+					Entry);
+	  RemoveEntryList (&LogEntry->Entry);
+	}
+      else
+	{
+	  LogEntry = NULL;
+	}
+
+      KeReleaseSpinLock (&IopLogListLock,
+			 Irql);
+
+      if (LogEntry == NULL)
+	{
+	  DPRINT1 ("No message in log list\n");
+	  break;
+	}
+
+
+
+      /* FIXME: Send the error message to the log port */
+
+
+
+      /* Release error log entry */
+      KeAcquireSpinLock (&IopAllocationLock,
+			 &Irql);
+
+      IopTotalLogSize -= LogEntry->EntrySize;
+      ExFreePool (LogEntry);
+
+      KeReleaseSpinLock (&IopAllocationLock,
+			 Irql);
+    }
+
+  DPRINT1 ("IopLogWorker() done\n");
+}
+
+
 /*
  * @implemented
  */
@@ -111,11 +183,12 @@ IoAllocateErrorLogEntry (IN PVOID IoObject,
 
 
 /*
- * @unimplemented
+ * @implemented
  */
 VOID STDCALL
 IoWriteErrorLogEntry (IN PVOID ElEntry)
 {
+  PWORK_QUEUE_ITEM LogWorkItem;
   PERROR_LOG_ENTRY LogEntry;
   KIRQL Irql;
 
@@ -124,18 +197,36 @@ IoWriteErrorLogEntry (IN PVOID ElEntry)
   LogEntry = (PERROR_LOG_ENTRY)((ULONG_PTR)ElEntry - sizeof(ERROR_LOG_ENTRY));
 
 
-  /* FIXME: Write log entry to the error log port or keep it in a list */
+  /* FIXME: Get logging time */
 
 
-  /* Release error log entry */
-  KeAcquireSpinLock (&IopAllocationLock,
+  KeAcquireSpinLock (&IopLogListLock,
 		     &Irql);
 
-  IopTotalLogSize -= LogEntry->EntrySize;
-  ExFreePool (LogEntry);
+  InsertHeadList (&IopLogListHead,
+		  &LogEntry->Entry);
 
-  KeReleaseSpinLock (&IopAllocationLock,
+  if (IopLogWorkerRunning == FALSE)
+    {
+      LogWorkItem = ExAllocatePool (NonPagedPool,
+				    sizeof(WORK_QUEUE_ITEM));
+      if (LogWorkItem != NULL)
+	{
+	  ExInitializeWorkItem (LogWorkItem,
+				IopLogWorker,
+				LogWorkItem);
+
+	  ExQueueWorkItem (LogWorkItem,
+			   DelayedWorkQueue);
+
+	  IopLogWorkerRunning = TRUE;
+	}
+    }
+
+  KeReleaseSpinLock (&IopLogListLock,
 		     Irql);
+
+  DPRINT1 ("IoWriteErrorLogEntry() done\n");
 }
 
 /* EOF */
diff --git a/reactos/ntoskrnl/io/iomgr.c b/reactos/ntoskrnl/io/iomgr.c
index 94cc7449fb8..cfb8d8e4b57 100644
--- a/reactos/ntoskrnl/io/iomgr.c
+++ b/reactos/ntoskrnl/io/iomgr.c
@@ -1,4 +1,4 @@
-/* $Id: iomgr.c,v 1.43 2003/11/17 02:12:51 hyperion Exp $
+/* $Id: iomgr.c,v 1.44 2003/11/18 20:08:30 ekohl Exp $
  *
  * COPYRIGHT:            See COPYING in the top level directory
  * PROJECT:              ReactOS kernel
@@ -343,6 +343,7 @@ IoInit (VOID)
   IoInitFileSystemImplementation();
   IoInitVpbImplementation();
   IoInitShutdownNotification();
+  IopInitErrorLog();
 
   /*
    * Create link from '\DosDevices' to '\??' directory