Initial community commit

Src/Winamp/TIMING.cpp

@@ -0,0 +1,77 @@
+/** (c) Nullsoft, Inc.         C O N F I D E N T I A L
+ ** Filename: 
+ ** Project:
+ ** Description:
+ ** Author:
+ ** Created:
+ **/
+
+#include "main.h"
+#include "timing.h"
+
+#ifdef TIMING
+#ifndef __alpha
+
+
+static struct {
+	unsigned int st_time[2];
+	unsigned int cycles;
+	unsigned int calls;
+} timingInfo[64];
+
+static int timingEnters;
+
+static void rdtsc(unsigned int t[2])
+{
+	__asm 
+	{
+		mov esi, t
+		_emit 0xf
+		_emit 0x31
+		mov [esi], eax
+		mov [esi+4], edx
+	}
+}
+	
+void _timingInit()
+{
+	memset(timingInfo,0,sizeof(timingInfo));
+}
+
+void _timingEnter(int which)
+{
+//   if (!timingEnters++) __asm cli
+   rdtsc(timingInfo[which].st_time);
+}
+
+void _timingLeave(int which)
+{
+   unsigned int t[2];
+   rdtsc(t);
+//   if (!--timingEnters) __asm sti
+   if (t[1]==timingInfo[which].st_time[1])
+   {
+	   timingInfo[which].cycles += t[0]-timingInfo[which].st_time[0];
+   }
+   else
+   {
+	   timingInfo[which].cycles += t[0]+(0xffffffff-timingInfo[which].st_time[0]);
+   }
+   timingInfo[which].calls++;
+}
+
+void _timingPrint()
+{
+	int x;
+	FILE *fp = fopen("C:\\timings.txt","a+t");
+	for (x = 0; x < sizeof(timingInfo)/sizeof(timingInfo[0]); x ++)
+	{
+		if (timingInfo[x].calls)
+			fprintf(fp,"%d: %d calls, %d clocks/call\n",x,timingInfo[x].calls,timingInfo[x].cycles/timingInfo[x].calls);
+	}
+	_timingInit();
+	fclose(fp);
+}
+
+#endif
+#endif