Changeset 10944 in vbox for trunk/src/VBox/Runtime/testcase

Timestamp:

Jul 29, 2008 6:08:58 PM (17 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

33809

Message:

iprt: RTTimerLR - low resolution timer API (< 10 Hz).

Location:

trunk/src/VBox/Runtime/testcase

Files:

• Makefile.kmk (modified) (2 diffs)
• tstTimerLR.cpp (copied) (copied from trunk/src/VBox/Runtime/testcase/tstTimer.cpp ) (7 diffs)

trunk/src/VBox/Runtime/testcase/Makefile.kmk

@@ -87 +87 @@
         tstTime-4 \
         tstTimer \
+        tstTimerLR \
         tstTimeSpec \
         tstTSC \
@@ -297 +298 @@
 tstTimer_SOURCES = tstTimer.cpp
 
+tstTimerLR_SOURCES = tstTimerLR.cpp
+
 tstTimeSpec_SOURCES = tstTimeSpec.cpp
 

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

@@ -1 +1 @@
 /* $Id$ */
 /** @file
- * IPRT Testcase - Timers.
+ * IPRT Testcase - Low Resolution Timers.
  */
 
 /*
- * Copyright (C) 2006-2007 Sun Microsystems, Inc.
+ * Copyright (C) 2006-2008 Sun Microsystems, Inc.
  *
  * This file is part of VirtualBox Open Source Edition (OSE), as
@@ -49 +49 @@
 static volatile uint64_t gu64Prev;
 
-static DECLCALLBACK(void) TimerCallback(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
+static DECLCALLBACK(void) TimerLRCallback(RTTIMERLR hTimerLR, void *pvUser, uint64_t iTick)
 {
     gcTicks++;
@@ -126 +126 @@
     } aTests[] =
     {
-        { 32, 2000, 0, 0 },
-        { 20, 2000, 0, 0 },
-        { 10, 2000, 0, 0 },
-        { 8,  2000, 0, 0 },
-        { 2,  2000, 0, 0 },
-        { 1,  2000, 0, 0 }
+        { 1000, 2500, 3,   3 }, /* (keep in mind the immediate first tick) */
+        {  250, 2000, 6,  10 },
+        {  100, 2000, 17, 23 },
     };
 
@@ -137 +134 @@
     for (i = 0; i < ELEMENTS(aTests); i++)
     {
-        aTests[i].cLower = (aTests[i].uMilliesWait - aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
-        aTests[i].cUpper = (aTests[i].uMilliesWait + aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
+        //aTests[i].cLower = (aTests[i].uMilliesWait - aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
+        //aTests[i].cUpper = (aTests[i].uMilliesWait + aTests[i].uMilliesWait / 10) / aTests[i].uMilliesInterval;
 
         RTPrintf("\n"
@@ -148 +145 @@
          */
         gcTicks = 0;
-        PRTTIMER pTimer;
+        RTTIMERLR hTimerLR;
         gu64Max = 0;
         gu64Min = UINT64_MAX;
         gu64Prev = 0;
-        rc = RTTimerCreate(&pTimer, aTests[i].uMilliesInterval, TimerCallback, NULL);
+        rc = RTTimerLRCreateEx(&hTimerLR, aTests[i].uMilliesInterval * (uint64_t)1000000, 0, TimerLRCallback, NULL);
         if (RT_FAILURE(rc))
         {
-            RTPrintf("RTTimerCreate(,%d,) -> %d\n", aTests[i].uMilliesInterval, rc);
+            RTPrintf("RTTimerLRCreateEX(,%u*1M,,,) -> %d\n", aTests[i].uMilliesInterval, rc);
             cErrors++;
             continue;
@@ -161 +158 @@
 
         /*
-         * Active waiting for 2 seconds and then destroy it.
+         * Start the timer an actively wait for it for the period requested.
          */
         uint64_t uTSBegin = RTTimeNanoTS();
+        rc = RTTimerLRStart(hTimerLR, 0);
+        if (RT_FAILURE(rc))
+        {
+            RTPrintf("tstTimer: FAILURE - RTTimerLRStart() -> %Rrc\n", rc);
+            cErrors++;
+        }
+
         while (RTTimeNanoTS() - uTSBegin < (uint64_t)aTests[i].uMilliesWait * 1000000)
             /* nothing */;
+
+        /* don't stop it, destroy it because there are potential races in destroying an active timer. */
+        rc = RTTimerLRDestroy(hTimerLR);
+        if (RT_FAILURE(rc))
+        {
+            RTPrintf("tstTimer: FAILURE - RTTimerLRDestroy() -> %d gcTicks=%d\n", rc, gcTicks);
+            cErrors++;
+        }
+
         uint64_t uTSEnd = RTTimeNanoTS();
         uint64_t uTSDiff = uTSEnd - uTSBegin;
         RTPrintf("uTS=%RI64 (%RU64 - %RU64)\n", uTSDiff, uTSBegin, uTSEnd);
-        if (RT_FAILURE(rc))
-            RTPrintf("warning: RTThreadSleep ended prematurely with %d\n", rc);
-        rc = RTTimerDestroy(pTimer);
-        if (RT_FAILURE(rc))
-        {
-            RTPrintf("tstTimer: FAILURE - RTTimerDestroy() -> %d gcTicks=%d\n", rc, gcTicks);
-            cErrors++;
-            continue;
-        }
+
+        /* Check that it really stopped. */
         unsigned cTicks = gcTicks;
-        RTThreadSleep(100);
+        RTThreadSleep(aTests[i].uMilliesInterval * 2);
         if (gcTicks != cTicks)
         {
-            RTPrintf("tstTimer: FAILURE - RTTimerDestroy() didn't really stop the timer! gcTicks=%d cTicks=%d\n", gcTicks, cTicks);
+            RTPrintf("tstTimer: FAILURE - RTTimerLRDestroy() didn't really stop the timer! gcTicks=%d cTicks=%d\n", gcTicks, cTicks);
             cErrors++;
             continue;
@@ -204 +210 @@
         RTPrintf(" min=%RU64 max=%RU64\n", gu64Min, gu64Max);
     }
+
+    /*
+     * Test multiple timers running at once.
+     */
+    /** @todo multiple LR timer testcase. */
 
     /*