Initial kernel events support

sdk/xtdk/kefuncs.h

@@ -16,6 +16,10 @@
 
 
 /* Kernel services routines forward references */
+XTAPI
+VOID
+KeClearEvent(IN PKEVENT Event);
+
 XTAPI
 VOID
 KeInitializeApc(IN PKAPC Apc,
@@ -27,6 +31,12 @@ KeInitializeApc(IN PKAPC Apc,
                 IN KPROCESSOR_MODE ApcMode,
                 IN PVOID Context);
 
+XTAPI
+VOID
+KeInitializeEvent(OUT PKEVENT Event,
+                  IN KEVENT_TYPE EventType,
+                  IN BOOLEAN InitialState);
+
 XTAPI
 VOID
 KeInitializeSemaphore(IN PKSEMAPHORE Semaphore,
@@ -57,6 +67,12 @@ KeReleaseSemaphore(IN PKSEMAPHORE Semaphore,
                    IN LONG Adjustment,
                    IN BOOLEAN Wait);
 
+XTAPI
+LONG
+KeSetEvent(IN PKEVENT Event,
+           IN KPRIORITY Increment,
+           IN BOOLEAN Wait);
+
 XTAPI
 VOID
 KeStartXtSystem(IN PKERNEL_INITIALIZATION_BLOCK Parameters);

sdk/xtdk/ketypes.h

@@ -84,6 +84,13 @@ typedef enum _KDPC_IMPORTANCE
     MediumHighImportance
 } KDPC_IMPORTANCE, *PKDPC_IMPORTANCE;
 
+/* Event types list */
+typedef enum _KEVENT_TYPE
+{
+    NotificationEvent,
+    SynchronizationEvent
+} KEVENT_TYPE, *PKEVENT_TYPE;
+
 /* Kernel objects */
 typedef enum _KOBJECTS
 {
@@ -226,6 +233,12 @@ typedef struct _KDPC_DATA
     ULONG DpcCount;
 } KDPC_DATA, *PKDPC_DATA;
 
+/* Event object structure definition */
+typedef struct _KEVENT
+{
+    DISPATCHER_HEADER Header;
+} KEVENT, *PKEVENT;
+
 /* Exception registration record  structure definition */
 typedef struct _EXCEPTION_REGISTRATION_RECORD
 {

sdk/xtdk/xtstruct.h

@@ -40,6 +40,7 @@ typedef enum _EFI_UART_STOP_BITS_TYPE EFI_UART_STOP_BITS_TYPE, *PEFI_UART_STOP_B
 typedef enum _EFI_UNIVERSA_GRAPHICS_BLT_OPERATION EFI_UNIVERSA_GRAPHICS_BLT_OPERATION, *PEFI_UNIVERSA_GRAPHICS_BLT_OPERATION;
 typedef enum _KAPC_ENVIRONMENT KAPC_ENVIRONMENT, *PKAPC_ENVIRONMENT;
 typedef enum _KDPC_IMPORTANCE KDPC_IMPORTANCE, *PKDPC_IMPORTANCE;
+typedef enum _KEVENT_TYPE KEVENT_TYPE, *PKEVENT_TYPE;
 typedef enum _KOBJECTS KOBJECTS, *PKOBJECTS;
 typedef enum _KPROCESS_STATE KPROCESS_STATE, *PKPROCESS_STATE;
 typedef enum _KTHREAD_STATE KTHREAD_STATE, *PKTHREAD_STATE;
@@ -204,6 +205,7 @@ typedef struct _KAPC_STATE KAPC_STATE, *PKAPC_STATE;
 typedef struct _KDPC KDPC, *PKDPC;
 typedef struct _KDPC_DATA KDPC_DATA, *PKDPC_DATA;
 typedef struct _KERNEL_INITIALIZATION_BLOCK KERNEL_INITIALIZATION_BLOCK, *PKERNEL_INITIALIZATION_BLOCK;
+typedef struct _KEVENT KEVENT, *PKEVENT;
 typedef struct _KGATE KGATE, *PKGATE;
 typedef struct _KPROCESS KPROCESS, *PKPROCESS;
 typedef struct _KQUEUE KQUEUE, *PKQUEUE;

xtoskrnl/CMakeLists.txt

@@ -18,6 +18,7 @@ list(APPEND XTOSKRNL_SOURCE
     ${XTOSKRNL_SOURCE_DIR}/hl/${ARCH}/ioport.c
     ${XTOSKRNL_SOURCE_DIR}/ke/apc.c
     ${XTOSKRNL_SOURCE_DIR}/ke/dpc.c
+    ${XTOSKRNL_SOURCE_DIR}/ke/event.c
     ${XTOSKRNL_SOURCE_DIR}/ke/globals.c
     ${XTOSKRNL_SOURCE_DIR}/ke/kprocess.c
     ${XTOSKRNL_SOURCE_DIR}/ke/krnlinit.c

xtoskrnl/ke/event.c

@@ -0,0 +1,85 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/ke/event.c
+ * DESCRIPTION:     Kernel events support
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.h>
+
+
+/**
+ * Clears the signal state of the event.
+ *
+ * @param Event
+ *        Supplies a pointer to the event object.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since NT 3.5
+ */
+XTAPI
+VOID
+KeClearEvent(IN PKEVENT Event)
+{
+    /* Clear event's signal state */
+    Event->Header.SignalState = FALSE;
+}
+
+/**
+ * Initializes a kernel event.
+ *
+ * @param Event
+ *        Supplies a pointer to the event object.
+ *
+ * @param EventType
+ *        Specifies an event type.
+ *
+ * @param InitialState
+ *        Specifies the initial signal state of the event.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since NT 3.5
+ */
+XTAPI
+VOID
+KeInitializeEvent(OUT PKEVENT Event,
+                  IN KEVENT_TYPE EventType,
+                  IN BOOLEAN InitialState)
+{
+    /* Initialize event dispatcher header */
+    Event->Header.Type = EventType;
+    Event->Header.SignalState = InitialState;
+
+    /* Initialize event wait list */
+    RtlInitializeListHead(&Event->Header.WaitListHead);
+}
+
+/**
+ * Sets new signal state and satisfy waits if possible.
+ *
+ * @param Event
+ *        Supplies a pointer to the event object.
+ *
+ * @param Increment
+ *        Specifies an event priority boost value.
+ *
+ * @param Wait
+ *        Specifies whether to call kernel wait routines or not.
+ *
+ * @return This routine returns the previous signal state of the event.
+ *
+ * @since NT 3.5
+ */
+XTAPI
+LONG
+KeSetEvent(IN PKEVENT Event,
+           IN KPRIORITY Increment,
+           IN BOOLEAN Wait)
+{
+    UNIMPLEMENTED;
+
+    return 0;
+}