1 files changed, 62 insertions, 0 deletions
diff --git a/Src/Wasabi/api/timer/timeslicer.cpp b/Src/Wasabi/api/timer/timeslicer.cpp
new file mode 100644
index 00000000..04d37421
--- /dev/null
+++ b/Src/Wasabi/api/timer/timeslicer.cpp
@@ -0,0 +1,62 @@
+#include "precomp.h"
+#include "timeslicer.h"
+
+#define TIMER_SLICE 0x7816
+
+TimeSlicer::TimeSlicer(int percent_cpu_usage/* =50 */, int slice_duration/* =-1 */) {
+  max_cpu_usage = MIN((float)percent_cpu_usage, 99.0f) / 100.0f;
+  duration = slice_duration;
+  started = 0;
+  slicecount = 0;
+  firstslicetime = -1;
+}
+
+TimeSlicer::~TimeSlicer() {
+}
+
+void TimeSlicer::startSlicer() {
+  if (started) return;
+  started = 1;
+  timerclient_setTimer(TIMER_SLICE, duration);
+  onSlicerStart();
+  timerclient_timerCallback(TIMER_SLICE);
+}
+
+void TimeSlicer::stopSlicer() {
+  if (!started) return;
+  started = 0;
+  timerclient_killTimer(TIMER_SLICE);
+  onSlicerStop();
+  firstslicetime = -1;
+}
+
+void TimeSlicer::onSlicerStop() {
+}
+
+void TimeSlicer::onSlicerStart() {
+}
+
+int TimeSlicer::isSlicerStarted() {
+  return started;
+}
+
+void TimeSlicer::timerclient_timerCallback(int id) {
+  if (id == TIMER_SLICE) {
+    DWORD now = Std::getTickCount();
+    runSlice(now, now + (int)((float)duration * max_cpu_usage));
+  } else
+    TimerClient::timerclient_timerCallback(id);
+}
+
+void TimeSlicer::runSlice(DWORD start, DWORD stopwhen) {
+  DWORD now = Std::getTickCount();
+  slicecount = 0;
+  onBeginSliceBatch();
+  if (slicecount == 0 && firstslicetime != -1) stopwhen = now + firstslicetime;
+  while (Std::getTickCount() < stopwhen) {
+    onSlice();
+    slicecount++;
+    if (!started) break;	// got aborted
+  }
+  onEndSliceBatch();
+}