Migrate KE subsystem to C++

xtoskrnl/ke/semphore.cc

@@ -0,0 +1,94 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/ke/semphore.cc
+ * DESCRIPTION:     Semaphores support
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.hh>
+
+
+namespace KE
+{
+
+/**
+ * Initializes a kernel semaphore object.
+ *
+ * @param Semaphore
+ *        Supplies a pointer to a semaphore object.
+ *
+ * @param Count
+ *        Specifies the initial count value of the semaphore.
+ *
+ * @param Limit
+ *        Specifies a maximum count value of the semaphore.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since NT 3.5
+ */
+XTAPI
+VOID
+Semaphore::InitializeSemaphore(IN PKSEMAPHORE Semaphore,
+                               IN LONG Count,
+                               IN LONG Limit)
+{
+    /* Initialize semaphore header and limit */
+    Semaphore->Header.Type = SemaphoreObject;
+    Semaphore->Header.SignalState = Count;
+    Semaphore->Limit = Limit;
+
+    /* Initialize semaphore wait list */
+    RtlInitializeListHead(&Semaphore->Header.WaitListHead);
+}
+
+/**
+ * Reads semaphore's current signal state.
+ *
+ * @param Semaphore
+ *        Supplies a pointer to a semaphore object.
+ *
+ * @return This routine returns the current signal state of the semaphore.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+LONG
+Semaphore::ReadState(IN PKSEMAPHORE Semaphore)
+{
+    /* Return semaphore's signal state */
+    return Semaphore->Header.SignalState;
+}
+
+/**
+ * Releases a semaphore.
+ *
+ * @param Semaphore
+ *        Supplies a pointer to a semaphore object.
+ *
+ * @param Increment
+ *        Specifies the priority increment value of the semaphore.
+ *
+ * @param Adjustment
+ *        Specifies adjustment value added to the semaphore's initial count value.
+ *
+ * @param Wait
+ *        Determines whether release of the semaphore will be followed by a kernel wait routine call or not.
+ *
+ * @return This routine returns a previous signal state of the semaphore.
+ *
+ * @since NT 3.5
+ */
+XTAPI
+LONG
+Semaphore::ReleaseSemaphore(IN PKSEMAPHORE Semaphore,
+                            IN KPRIORITY Increment,
+                            IN LONG Adjustment,
+                            IN BOOLEAN Wait)
+{
+    UNIMPLEMENTED;
+    return 0;
+}
+
+} /* namespace */