From e43a2cac32cb773994b11a3d964ec4acc372d273 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Wed, 26 Jul 2023 21:33:36 -0700
Subject: Added a profiler and investageted Server.

---
 src/unstable/profiler.cpp | 184 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 184 insertions(+)
 create mode 100644 src/unstable/profiler.cpp

(limited to 'src/unstable/profiler.cpp')

diff --git a/src/unstable/profiler.cpp b/src/unstable/profiler.cpp
new file mode 100644
index 0000000..1b176b9
--- /dev/null
+++ b/src/unstable/profiler.cpp
@@ -0,0 +1,184 @@
+#include "bu/profiler.h"
+#include "bu/mutexlocker.h"
+#include "bu/sio.h"
+
+#include <sys/time.h>
+
+Bu::Profiler::Profiler()
+{
+}
+
+Bu::Profiler::~Profiler()
+{
+    printReport();
+}
+
+uint64_t Bu::Profiler::getMicroTime()
+{
+    struct timeval tv;
+    gettimeofday( &tv, NULL );
+    return ((uint64_t)tv.tv_sec)*1000000 + ((uint64_t)tv.tv_usec);
+}
+
+void Bu::Profiler::startEvent( const Bu::Blob &bName )
+{
+    Bu::MutexLocker l( mLock );
+    if( hEvent.has( bName ) )
+    {
+        hEvent.get( bName ).append( Event() );
+    }
+    else
+    {
+        hEvent.insert( bName, EventList( Event() ) );
+    }
+}
+
+void Bu::Profiler::endEvent( const Bu::Blob &bName )
+{
+    Bu::MutexLocker l( mLock );
+    if( !hEvent.has( bName ) )
+        return;
+
+    if( hEvent.get( bName ).isEmpty() )
+        return;
+
+    hEvent.get( bName ).last().end();
+}
+
+void Bu::Profiler::printReport() const
+{
+    class Breakdown
+    {
+    public:
+        Breakdown( const Bu::Blob &bName ) :
+            bName( bName ), uCount( 0 ), uTotal( 0 ), uMin( 0 ), uMax( 0 ) { }
+        Breakdown( const Breakdown &rSrc ) :
+            bName( rSrc.bName ), uCount( rSrc.uCount ), uTotal( rSrc.uTotal ),
+            uMin( rSrc.uMin ), uMax( rSrc.uMax ) { }
+        ~Breakdown() { }
+
+        bool operator<( const Breakdown &rhs ) const
+        {
+            return uTotal > rhs.uTotal;
+        }
+        Breakdown &operator=( const Breakdown &rhs )
+        {
+            bName = rhs.bName;
+            uCount = rhs.uCount;
+            uTotal = rhs.uTotal;
+            uMin = rhs.uMin;
+            uMax = rhs.uMax;
+            return *this;
+        }
+        
+        void add( uint64_t uSpan )
+        {
+            if( uCount == 0 )
+            {
+                uMin = uMax = uSpan;
+            }
+            else
+            {
+                if( uMin > uSpan )
+                    uMin = uSpan;
+                if( uMax < uSpan )
+                    uMax = uSpan;
+
+            }
+            uCount++;
+            uTotal += uSpan;
+        }
+
+        Bu::Blob bName;
+        uint64_t uCount;
+        uint64_t uTotal;
+        uint64_t uMin;
+        uint64_t uMax;
+    };
+    Bu::MutexLocker l( mLock );
+
+    int iTitleLen = 0;
+    Bu::List<Breakdown> lBreakdown;
+    for( EventListHash::const_iterator iType = hEvent.begin(); iType; iType++ )
+    {
+        Breakdown b( iType.getKey() );
+        if( iTitleLen < b.bName.getSize() )
+            iTitleLen = b.bName.getSize();
+        for( EventList::const_iterator iEv = iType.getValue().begin();
+                iEv; iEv++ )
+        {
+            b.add( (*iEv).getSpan() );
+        }
+        lBreakdown.append( b );
+    }
+
+    lBreakdown.sort();
+
+    Bu::println("%1 %2 %3 %4 %5 %6")
+        .arg("Title",   Bu::Fmt(iTitleLen) )
+        .arg("Cnt",     Bu::Fmt(5) )
+        .arg("Total",   Bu::Fmt(9) )
+        .arg("Avg",     Bu::Fmt(9) )
+        .arg("Max",     Bu::Fmt(9) )
+        .arg("Min",     Bu::Fmt(9) );
+    for( Bu::List<Breakdown>::iterator i = lBreakdown.begin(); i; i++ )
+    {
+        Bu::println("%1 %2 %3.%4 %5.%6 %7.%8 %9.%10")
+            .arg( (*i).bName.getData(), Bu::Fmt(iTitleLen) )
+            .arg( (*i).uCount, Bu::Fmt(5) )
+            .arg( ((*i).uTotal/1000000), Bu::Fmt(5).right() )
+            .arg( ((*i).uTotal/1000)%1000, Bu::Fmt(3).fill('0').right() )
+            .arg( ((*i).uTotal/(*i).uCount)/1000000, Bu::Fmt(5).right() )
+            .arg( (((*i).uTotal/(*i).uCount)/1000)%1000, Bu::Fmt(3).right().fill('0') )
+            .arg( (*i).uMax/1000000, Bu::Fmt(5).right() )
+            .arg( ((*i).uMax/1000)%1000, Bu::Fmt(3).right().fill('0') )
+            .arg( (*i).uMin/1000000, Bu::Fmt(5).right() )
+            .arg( ((*i).uMin/1000)%1000, Bu::Fmt(3).right().fill('0') )
+            ;
+    }
+}
+
+Bu::Profiler::Event::Event() :
+    iStart( Bu::Profiler::getMicroTime() ),
+    iStop( 0 )
+{
+}
+
+Bu::Profiler::Event::Event( const Event &rSrc ) :
+    iStart( rSrc.iStart ),
+    iStop( rSrc.iStop )
+{
+}
+
+Bu::Profiler::Event::~Event()
+{
+}
+
+void Bu::Profiler::Event::end()
+{
+    if( iStop == 0 )
+        iStop = Bu::Profiler::getMicroTime();
+}
+
+bool Bu::Profiler::Event::hasEnded() const
+{
+    return iStop != 0;
+}
+
+uint64_t Bu::Profiler::Event::getStart() const
+{
+    return iStart;
+}
+
+uint64_t Bu::Profiler::Event::getEnd() const
+{
+    return iStop;
+}
+
+uint64_t Bu::Profiler::Event::getSpan() const
+{
+    if( iStop < iStart )
+        return 0;
+    return iStop-iStart;
+}
+
-- 
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