Changeset 1537 in vbox for trunk/src/VBox/Runtime

Timestamp:

Mar 16, 2007 5:02:13 PM (18 years ago)

Author:

vboxsync

Message:

min/max.

File:

• trunk/src/VBox/Runtime/testcase/tstTimer.cpp (modified) (4 diffs)

trunk/src/VBox/Runtime/testcase/tstTimer.cpp

@@ -36 +36 @@
 *******************************************************************************/
 static volatile unsigned gcTicks;
+static volatile uint64_t gu64Min;
+static volatile uint64_t gu64Max;
+static volatile uint64_t gu64Prev;
 
 static DECLCALLBACK(void) TimerCallback(PRTTIMER pTimer, void *pvUser)
 {
     gcTicks++;
+
+    const uint64_t u64Now = RTTimeNanoTS();
+    if (gu64Prev)
+    {
+        const uint64_t u64Delta = u64Now - gu64Prev;
+        if (u64Delta < gu64Min)
+            gu64Min = u64Delta;
+        if (u64Delta > gu64Max)
+            gu64Max = u64Delta;
+    }
+    gu64Prev = u64Now;
 }
 
@@ -125 +139 @@
         gcTicks = 0;
         PRTTIMER pTimer;
+        gu64Max = 0;
+        gu64Min = UINT64_MAX;
+        gu64Prev = 0;
         rc = RTTimerCreate(&pTimer, aTests[i].uMilliesInterval, TimerCallback, NULL);
         if (RT_FAILURE(rc))
@@ -134 +151 @@
 
         /*
-         * Sleep for a while and then kill it.
+         * Active waiting for 2 seconds and then destroy it.
          */
         uint64_t uTSBegin = RTTimeNanoTS();
-#if 1
         while (RTTimeNanoTS() - uTSBegin < (uint64_t)aTests[i].uMilliesWait * 1000000)
             /* nothing */;
-
-#else
-        rc = RTThreadSleep(aTests[i].uMilliesWait);
-#endif
         uint64_t uTSEnd = RTTimeNanoTS();
         uint64_t uTSDiff = uTSEnd - uTSBegin;
@@ -170 +182 @@
         if (gcTicks < aTests[i].cLower)
         {
-            RTPrintf("tstTimer: FAILURE - Too few ticks gcTicks=%d (expected %d-%d)\n", gcTicks, aTests[i].cUpper, aTests[i].cLower);
+            RTPrintf("tstTimer: FAILURE - Too few ticks gcTicks=%d (expected %d-%d)", gcTicks, aTests[i].cUpper, aTests[i].cLower);
             cErrors++;
         }
         else if (gcTicks > aTests[i].cUpper)
         {
-            RTPrintf("tstTimer: FAILURE - Too many ticks gcTicks=%d (expected %d-%d)\n", gcTicks, aTests[i].cUpper, aTests[i].cLower);
+            RTPrintf("tstTimer: FAILURE - Too many ticks gcTicks=%d (expected %d-%d)", gcTicks, aTests[i].cUpper, aTests[i].cLower);
             cErrors++;
         }
         else
-            RTPrintf("tstTimer: OK      - gcTicks=%d\n",  gcTicks);
+            RTPrintf("tstTimer: OK      - gcTicks=%d",  gcTicks);
+        RTPrintf(" min=%RU64 max=%RU64\n", gu64Min, gu64Max);
     }