OS stopwatch API

cmake/aurora_os.cmake

@@ -8,6 +8,7 @@ add_library(aurora_os STATIC lib/dolphin/os/OSInit.cpp
         lib/dolphin/os/OSAlloc.cpp
         lib/dolphin/os/OSAddress.cpp
         lib/dolphin/os/OSReport.cpp
+        lib/dolphin/os/OSStopwatch.cpp
         lib/dolphin/AR.cpp)
 add_library(aurora::os ALIAS aurora_os)
 set_target_properties(aurora_os PROPERTIES FOLDER "aurora")

include/dolphin/os.h

@@ -48,6 +48,7 @@ extern "C" {
 #include <dolphin/os/OSSemaphore.h>
 #include <dolphin/os/OSUtf.h>
 #include <dolphin/os/OSTimer.h>
+#include <dolphin/os/OSStopwatch.h>
 
 // private macro, maybe shouldn't be defined here?
 #define OFFSET(addr, align) (((u32)(addr) & ((align)-1)))
@@ -156,24 +157,6 @@ typedef struct OSBootInfo_s {
     u32 FSTMaxLength;
 } OSBootInfo;
 
-typedef struct OSStopwatch {
-    char* name;
-    u32 hits;
-    OSTime total;
-    OSTime min;
-    OSTime max;
-    OSTime last;
-    BOOL running;
-    u32 _padding;
-} OSStopwatch;
-
-void OSInitStopwatch(OSStopwatch* sw, char* name);
-void OSStartStopwatch(OSStopwatch* sw);
-void OSStopStopwatch(OSStopwatch* sw);
-OSTime OSCheckStopwatch(OSStopwatch* sw);
-void OSResetStopwatch(OSStopwatch* sw);
-void OSDumpStopwatch(OSStopwatch* sw);
-
 OSTick OSGetTick(void);
 /**
  * Get the current time, in ticks since GCN epoch (2000-01-01 00:00:00 UTC).

include/dolphin/os/OSStopwatch.h

@@ -0,0 +1,33 @@
+#ifndef _DOLPHIN_OSSTOPWATCH_H_
+#define _DOLPHIN_OSSTOPWATCH_H_
+
+#include <dolphin/types.h>
+#include <dolphin/os/OSTime.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct OSStopwatch {
+    char* name;
+    u32 hits;
+    OSTime total;
+    OSTime min;
+    OSTime max;
+    OSTime last;
+    BOOL running;
+    u32 _padding;
+} OSStopwatch;
+
+void OSInitStopwatch(OSStopwatch* sw, char* name);
+void OSStartStopwatch(OSStopwatch* sw);
+void OSStopStopwatch(OSStopwatch* sw);
+OSTime OSCheckStopwatch(OSStopwatch* sw);
+void OSResetStopwatch(OSStopwatch* sw);
+void OSDumpStopwatch(OSStopwatch* sw);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _DOLPHIN_OSSTOPWATCH_H_

lib/dolphin/os/OSStopwatch.cpp

@@ -0,0 +1,51 @@
+#include <dolphin/os.h>
+
+void OSInitStopwatch(OSStopwatch* sw, char* name) {
+  sw->name = name;
+  sw->total = 0;
+  sw->hits = 0;
+  sw->min = 0x00000000FFFFFFFF;
+  sw->max = 0;
+}
+
+void OSStartStopwatch(OSStopwatch* sw) {
+  sw->running = TRUE;
+  sw->last = OSGetTime();
+}
+
+void OSStopStopwatch(OSStopwatch* sw) {
+  if (!sw->running) {
+    return;
+  }
+
+  const OSTime interval = OSGetTime() - sw->last;
+  sw->total += interval;
+  sw->running = FALSE;
+  sw->hits++;
+  if (sw->max < interval) {
+    sw->max = interval;
+  }
+  if (interval < sw->min) {
+    sw->min = interval;
+  }
+}
+
+OSTime OSCheckStopwatch(OSStopwatch* sw) {
+  OSTime currTotal = sw->total;
+  if (sw->running) {
+    currTotal += OSGetTime() - sw->last;
+  }
+  return currTotal;
+}
+
+void OSResetStopwatch(OSStopwatch* sw) { OSInitStopwatch(sw, sw->name); }
+
+void OSDumpStopwatch(OSStopwatch* sw) {
+  OSReport("Stopwatch [%s]\t:\n", sw->name);
+  OSReport("\tTotal= %lld us\n", static_cast<long long>(OSTicksToMicroseconds(sw->total)));
+  OSReport("\tHits = %u \n", sw->hits);
+  OSReport("\tMin  = %lld us\n", static_cast<long long>(OSTicksToMicroseconds(sw->min)));
+  OSReport("\tMax  = %lld us\n", static_cast<long long>(OSTicksToMicroseconds(sw->max)));
+  const OSTime mean = sw->hits != 0 ? sw->total / sw->hits : 0;
+  OSReport("\tMean = %lld us\n", static_cast<long long>(OSTicksToMicroseconds(mean)));
+}