1 files changed, 129 insertions, 0 deletions
diff --git a/src/VBox/GuestHost/OpenGL/util/timer.c b/src/VBox/GuestHost/OpenGL/util/timer.c
new file mode 100644
index 00000000..9ac8433c
--- /dev/null
+++ b/src/VBox/GuestHost/OpenGL/util/timer.c
@@ -0,0 +1,129 @@
+
+#ifndef WINDOWS
+#include <stddef.h>
+#include <fcntl.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#if defined( IRIX ) || defined( IRIX64 )
+#include <sys/syssgi.h>
+#endif
+#include <sys/errno.h>
+#include <unistd.h>
+#else
+#define WIN32_LEAN_AND_MEAN
+# ifdef VBOX
+#  include <iprt/win/windows.h>
+# else
+#include <windows.h>
+# endif
+#endif
+
+#include "cr_timer.h"
+#include "cr_mem.h"
+#include "cr_error.h"
+
+static double crTimerGetTime( CRTimer *t )
+{
+#if defined( IRIX ) || defined( IRIX64 )
+	if (t->iotimer_addr64) {
+		volatile iotimer64_t counter_value;
+		counter_value = *(t->iotimer_addr64);
+		return ((double) counter_value * .000000000001) * (double) t->cycleval;
+	}
+	else {
+		volatile iotimer32_t counter_value;
+		counter_value = *(t->iotimer_addr32);
+		return ((double) counter_value * .000000000001) * (double) t->cycleval;
+	}
+#elif defined( WINDOWS )
+	QueryPerformanceCounter( &t->performance_counter );
+	return ((double) t->performance_counter.QuadPart)*t->one_over_frequency;
+#elif defined( Linux ) || defined( FreeBSD ) || defined(DARWIN) || defined(AIX) || defined(SunOS) || defined(OSF1)
+	gettimeofday( &t->timeofday, NULL );	
+	return t->timeofday.tv_sec + t->timeofday.tv_usec / 1000000.0;
+#else
+#error TIMERS
+#endif
+}
+
+CRTimer *crTimerNewTimer( void )
+{
+	CRTimer *t = (CRTimer *) crAlloc( sizeof(*t) );
+#if defined(IRIX) || defined( IRIX64 )
+	__psunsigned_t phys_addr, raddr;
+	int poffmask = getpagesize() - 1;
+	int counterSize = syssgi(SGI_CYCLECNTR_SIZE);
+
+	phys_addr = syssgi(SGI_QUERY_CYCLECNTR, &(t->cycleval));
+	if (phys_addr == ENODEV) {
+		crError( "Sorry, this SGI doesn't support timers." );
+	}
+
+	raddr = phys_addr & ~poffmask;
+	t->fd = open("/dev/mmem", O_RDONLY);
+
+	if (counterSize == 64) {
+		t->iotimer_addr64 =
+			(volatile iotimer64_t *)mmap(0, poffmask, PROT_READ,
+																	 MAP_PRIVATE, t->fd, (off_t)raddr);
+		t->unmapLocation = (void *)t->iotimer_addr64;
+		t->unmapSize = poffmask;
+		t->iotimer_addr64 = (iotimer64_t *)((__psunsigned_t)t->iotimer_addr64 +
+				(phys_addr & poffmask));
+	}
+	else if (counterSize == 32) {
+		t->iotimer_addr32 = (volatile iotimer32_t *)mmap(0, poffmask, PROT_READ,
+				MAP_PRIVATE, t->fd,
+				(off_t)raddr);
+		t->unmapLocation = (void *)t->iotimer_addr32;
+		t->unmapSize = poffmask;
+		t->iotimer_addr32 = (iotimer32_t *)((__psunsigned_t)t->iotimer_addr32 +
+				(phys_addr & poffmask));
+	}
+	else {
+		crError( "Fatal timer init error" );
+	}
+#elif defined( WINDOWS )
+	QueryPerformanceFrequency( &t->performance_frequency );
+	t->one_over_frequency = 1.0/((double)t->performance_frequency.QuadPart);
+#endif
+	t->time0 = t->elapsed = 0;
+	t->running = 0;
+	return t;
+}
+
+void crDestroyTimer( CRTimer *t )
+{
+#if defined( IRIX ) || defined( IRIX64 )
+	close( t->fd );
+#endif
+	crFree( t );
+}
+
+void crStartTimer( CRTimer *t )
+{
+    t->running = 1;
+    t->time0 = crTimerGetTime( t );
+}
+
+void crStopTimer( CRTimer *t )
+{
+    t->running = 0;
+    t->elapsed += crTimerGetTime( t ) - t->time0;
+}
+
+void crResetTimer( CRTimer *t )
+{
+    t->running = 0;
+    t->elapsed = 0;
+}
+
+double crTimerTime( CRTimer *t )
+{
+	if (t->running) {
+		crStopTimer( t );
+		crStartTimer( t );
+	}
+	return t->elapsed;
+}