This commit was manufactured by cvs2svn to create branch 'captive'.

[reactos.git] / subsys / win32k / objects / semaphor.c

diff --git a/subsys/win32k/objects/semaphor.c b/subsys/win32k/objects/semaphor.c
new file mode 100644 (file)
index 0000000..cb6e1a1
--- /dev/null
+++ b/subsys/win32k/objects/semaphor.c
@@ -0,0 +1,90 @@
+
+#undef WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <stdlib.h>
+#include <win32k/bitmaps.h>
+#include <win32k/debug.h>
+#include <win32k/debug1.h>
+#include <debug.h>
+#include <ddk/winddi.h>
+#include "../eng/objects.h"
+#include <include/error.h>
+
+/*
+ * @implemented
+ */
+HSEMAPHORE
+STDCALL
+EngCreateSemaphore ( VOID )
+{
+  // www.osr.com/ddk/graphics/gdifncs_95lz.htm
+  PERESOURCE psem = ExAllocatePool ( NonPagedPool, sizeof(ERESOURCE) );
+  if ( !psem )
+    return NULL;
+  if ( !NT_SUCCESS(ExInitializeResourceLite ( psem )) )
+  {
+    ExFreePool ( psem );
+    return NULL;
+  }
+  return (HSEMAPHORE)psem;
+}
+
+/*
+ * @implemented
+ */
+VOID
+STDCALL
+EngAcquireSemaphore ( IN HSEMAPHORE hsem )
+{
+  // www.osr.com/ddk/graphics/gdifncs_14br.htm
+  ASSERT(hsem);
+  ExAcquireResourceExclusiveLite ( (PERESOURCE)hsem, TRUE );
+}
+
+/*
+ * @implemented
+ */
+VOID
+STDCALL
+EngReleaseSemaphore ( IN HSEMAPHORE hsem )
+{
+  // www.osr.com/ddk/graphics/gdifncs_5u3r.htm
+  ASSERT(hsem);
+  ExReleaseResourceLite ( (PERESOURCE)hsem );
+}
+
+/*
+ * @implemented
+ */
+VOID
+STDCALL
+EngDeleteSemaphore ( IN HSEMAPHORE hsem )
+{
+  // www.osr.com/ddk/graphics/gdifncs_13c7.htm
+  ASSERT ( hsem );
+  ExFreePool ( (PVOID)hsem );
+}
+
+/*
+ * @implemented
+ */
+BOOL
+STDCALL
+EngIsSemaphoreOwned ( IN HSEMAPHORE hsem )
+{
+  // www.osr.com/ddk/graphics/gdifncs_6wmf.htm
+  ASSERT(hsem);
+  return (((PERESOURCE)hsem)->ActiveCount > 0);
+}
+
+/*
+ * @implemented
+ */
+BOOL
+STDCALL
+EngIsSemaphoreOwnedByCurrentThread ( IN HSEMAPHORE hsem )
+{
+  // www.osr.com/ddk/graphics/gdifncs_9yxz.htm
+  ASSERT(hsem);
+  return ExIsResourceAcquiredExclusiveLite ( (PERESOURCE)hsem );
+}