+libcaptive/ex/work.c

 - +ExQueueWorkItem()

diff --git a/src/libcaptive/ex/work.c b/src/libcaptive/ex/work.c
new file mode 100644 (file)
index 0000000..bf64179
--- /dev/null
+++ b/src/libcaptive/ex/work.c
@@ -0,0 +1,80 @@
+/* $Id$
+ * reactos WORK_QUEUE_ITEM handling by libcaptive
+ * Copyright (C) 2003 Jan Kratochvil <project-captive@jankratochvil.net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; exactly version 2 of June 1991 is required
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "config.h"
+
+#include "reactos/ddk/exfuncs.h"       /* self */
+#include <glib/gmessages.h>
+#include "reactos/ddk/extypes.h"       /* for WORK_QUEUE_ITEM */
+#include <glib/gmain.h>
+
+
+static gboolean ExQueueWorkItem_idlefunc(WORK_QUEUE_ITEM *WorkItem /* data */)
+{
+       g_return_val_if_fail(WorkItem!=NULL,FALSE);     /* false=>remove-me */
+       g_return_val_if_fail(WorkItem->Routine!=NULL,FALSE);    /* false=>remove-me */
+
+       /* typedef VOID STDCALL_FUNC (*PWORKER_THREAD_ROUTINE)(PVOID Parameter); */
+
+       (*WorkItem->Routine)(WorkItem->Context);
+       WorkItem->Routine=NULL; /* request is no longer pending */
+       return FALSE;   /* remove-me */
+}
+
+/**
+ * ExQueueWorkItem:
+ * @WorkItem: Initialized structure of #WORK_QUEUE_ITEM to be initialize.
+ * %NULL value is forbidden.
+ * @QueueType: Queue priority.
+ *
+ * Inserts a work item in a queue for one of the system worker threads to
+ * process. It will be processed through g_idle_add_full() with priority
+ * range %G_PRIORITY_DEFAULT+10 ... %G_PRIORITY_DEFAULT+30.
+ *
+ * FIXME: @WorkItem is required by libcaptive to remain valid until invocation.
+ * Is it legal?
+ */
+VOID ExQueueWorkItem(PWORK_QUEUE_ITEM WorkItem,WORK_QUEUE_TYPE QueueType)
+{
+gint priority;
+
+       g_return_if_fail(WorkItem!=NULL);
+       g_return_if_fail(WorkItem->Routine!=NULL);
+
+       switch (QueueType) {
+               case DelayedWorkQueue:
+                       priority=G_PRIORITY_DEFAULT+30; /* positive towards G_PRIORITY_HIGH_IDLE */
+                       break;
+               case CriticalWorkQueue:
+                       priority=G_PRIORITY_DEFAULT+20; /* positive towards G_PRIORITY_HIGH_IDLE */
+                       break;
+               case HyperCriticalWorkQueue:
+                       priority=G_PRIORITY_DEFAULT+10; /* positive towards G_PRIORITY_HIGH_IDLE */
+                       break;
+               default:
+                       g_assert_not_reached();
+                       priority=G_PRIORITY_DEFAULT;
+               }
+
+       g_idle_add_full(
+                       priority,       /* priority */
+                       (GSourceFunc)ExQueueWorkItem_idlefunc,  /* function */
+                       WorkItem,       /* data */
+                       NULL);  /* notify */
+}