Reorganisation of the source tree

Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.

The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level.  The build system now makes no
pretense at being multi-project, it is just the GHC build system.

No doubt this will break many things, and there will be a period of
instability while we fix the dependencies.  A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.

1 files changed, 101 insertions, 0 deletions

diff --git a/rts/win32/GetTime.c b/rts/win32/GetTime.c
new file mode 100644
index 0000000000..584b994d53
--- /dev/null
+++ b/rts/win32/GetTime.c
@@ -0,0 +1,101 @@
+/* -----------------------------------------------------------------------------
+ *
+ * (c) The GHC Team 2005
+ *
+ * Machine-dependent time measurement functions
+ *
+ * ---------------------------------------------------------------------------*/
+
+#include "Rts.h"
+#include "GetTime.h"
+
+#include <windows.h>
+
+#ifdef HAVE_TIME_H
+# include <time.h>
+#endif
+
+#define HNS_PER_SEC 10000000LL /* FILETIMES are in units of 100ns */
+/* Convert FILETIMEs into secs */
+
+static INLINE_ME Ticks
+fileTimeToTicks(FILETIME ft)
+{
+    Ticks t;
+    t = ((Ticks)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
+    t = (t * TICKS_PER_SECOND) / HNS_PER_SEC;
+    return t;
+}    
+
+static int is_win9x = -1;
+
+static INLINE_ME rtsBool
+isWin9x(void)
+{
+    if (is_win9x < 0) {
+	/* figure out whether we're on a Win9x box or not. */
+	OSVERSIONINFO oi;
+	BOOL b;
+	
+	/* Need to init the size field first.*/
+	oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+	b = GetVersionEx(&oi);
+      
+	is_win9x = ( (b && (oi.dwPlatformId & VER_PLATFORM_WIN32_WINDOWS)) ? 1 : 0);
+    }
+    return is_win9x;
+}
+
+
+void
+getProcessTimes(Ticks *user, Ticks *elapsed)
+{
+    *user    = getProcessCPUTime();
+    *elapsed = getProcessElapsedTime();
+}
+
+Ticks
+getProcessCPUTime(void)
+{
+    FILETIME creationTime, exitTime, userTime, kernelTime = {0,0};
+
+    if (isWin9x()) return getProcessElapsedTime();
+
+    if (!GetProcessTimes(GetCurrentProcess(), &creationTime,
+			 &exitTime, &kernelTime, &userTime)) {
+	return 0;
+    }
+
+    return fileTimeToTicks(userTime);
+}
+
+Ticks
+getProcessElapsedTime(void)
+{
+    FILETIME system_time;
+    GetSystemTimeAsFileTime(&system_time);
+    return fileTimeToTicks(system_time);
+}
+
+Ticks
+getThreadCPUTime(void)
+{
+    FILETIME creationTime, exitTime, userTime, kernelTime = {0,0};
+
+    if (isWin9x()) return getProcessCPUTime();
+
+    if (!GetThreadTimes(GetCurrentThread(), &creationTime,
+			&exitTime, &kernelTime, &userTime)) {
+	return 0;
+    }
+
+    return fileTimeToTicks(userTime);
+}
+
+nat
+getPageFaults(void)
+{
+  /* ToDo (on NT): better, get this via the performance data
+     that's stored in the registry. */
+    return 0;
+}