Changeset 4407 for trunk/src/kernel32/cpu.cpp

Timestamp:

Oct 3, 2000, 7:28:32 PM (25 years ago)

Author:

sandervl

Message:

misc updates + fixes

File:

• trunk/src/kernel32/cpu.cpp (modified) (2 diffs)

trunk/src/kernel32/cpu.cpp

@@ -1 @@
-/* $Id: cpu.cpp,v 1.10 2000-08-23 18:03:33 sandervl Exp $ */
+/* $Id: cpu.cpp,v 1.11 2000-10-03 17:28:29 sandervl Exp $ */
 /*
  * Odin win32 CPU apis
@@ -139 +139 @@
                         GetCPUVendorString(buf);
                         RegSetValueExA(xhkey,"VendorIdentifier",0,REG_SZ,(LPBYTE)buf,strlen(buf));
-                }
-
+#ifdef __WIN32OS2__
+                        if(i==0) {
+                                DWORD mhz;
+                                features = GetCPUFeatures();
+                                if(features & CPUID_TIME_STAMP_COUNTER) {
+                                        LARGE_INTEGER tsc1, tsc2, freq, time1, time2;
+                                        double clockticks, millisec, frequency, tmp, tmp1, mhertz;
+
+                                        QueryPerformanceFrequency(&freq);
+
+                                        GetTSC((LONG *)&tsc1.LowPart, &tsc1.HighPart);
+                                        QueryPerformanceCounter(&time1);
+
+                                        Sleep(32);      //sleep for about 32 ms
+                                        
+                                        GetTSC((LONG *)&tsc2.LowPart, &tsc2.HighPart);
+                                        QueryPerformanceCounter(&time2);
+                                        tmp  = (double)time2.LowPart + (double)time2.HighPart*4.0*1024.0*1024.0;
+                                        tmp1 = (double)time1.LowPart + (double)time1.HighPart*4.0*1024.0*1024.0;
+                                        millisec = tmp - tmp1;
+                                        frequency= (double)freq.LowPart;
+                                        frequency= frequency / 1000.0;
+                                        millisec = millisec / frequency;
+
+                                        tmp  = (double)tsc2.LowPart + (double)tsc2.HighPart*4.0*1024.0*1024.0;
+                                        tmp1 = (double)tsc1.LowPart + (double)tsc1.HighPart*4.0*1024.0*1024.0;
+                                        clockticks = tmp - tmp1;
+
+                                        tmp = 1000 / millisec;
+                                        clockticks = clockticks * tmp;  //ticks per second
+                                        mhertz = clockticks / 1000000.0;
+                                        mhz = (DWORD)mhertz;
+                                }
+                                else    mhz = 100;
+                                RegSetValueExA(xhkey,"~Mhz",0,REG_DWORD, (LPBYTE)&mhz, sizeof(DWORD));
+                        }
+#endif
+                }
 //TODO: FPU fdiv bug
 #if 0