Nevermind about the Myriad bug. It was really obvious, I was accidentally

adding all pre-allocated blocks to the header stream instead of just allocating
them.  This caused some oddness, as you can probably imagine.

There's a good way to go before Myriad is as cool as it could be, but it's
already much more efficient and all around better than nids.  I'll have to write
a program to convert nids cache stores to myriad cache stores, but that should
be fairly minor.

1 files changed, 36 insertions, 27 deletions

diff --git a/src/myriad.cpp b/src/myriad.cpp
index 77b481d..a95e885 100644
--- a/src/myriad.cpp
+++ b/src/myriad.cpp
@@ -28,7 +28,8 @@ Bu::Myriad::Myriad( Bu::Stream &sStore ) :
         sStore( sStore ),
         iBlockSize( 0 ),
         iBlocks( 0 ),
-        iUsed( 0 )
+        iUsed( 0 ),
+        bHeaderChanged( false )
 {
 }
 
@@ -86,8 +87,8 @@ void Bu::Myriad::initialize()
         sStore.read( &iStreams, 4 );
 
         iBlocks = iSize/iBlockSize;
-        sio << "Myriad: iSize=" << iSize << ", iBlockSize=" << iBlockSize
-                << ", iBlocks=" << iBlocks << ", iStreams=" << iStreams << sio.nl;
+        //sio << "Myriad: iSize=" << iSize << ", iBlockSize=" << iBlockSize
+        //      << ", iBlocks=" << iBlocks << ", iStreams=" << iStreams << sio.nl;
 
         int iHeaderSize = 14 + 8 + 4;
         int iHeaderBlocks = 0; //blkDiv( iHeaderSize+4, iBlockSize );
@@ -98,8 +99,8 @@ void Bu::Myriad::initialize()
                 iHeaderSize = 14 + 8 + 4*iHeaderBlocks;
         }
 
-        sio << "Myriad: iHeaderSize=" << iHeaderSize
-                << ", iHeaderBlocks=" << iHeaderBlocks << sio.nl;
+        //sio << "Myriad: iHeaderSize=" << iHeaderSize
+        //      << ", iHeaderBlocks=" << iHeaderBlocks << sio.nl;
 
         Stream *pFakeHdr = new Stream;
         pFakeHdr->iId = 0;
@@ -121,26 +122,26 @@ void Bu::Myriad::initialize()
                 pIn->read( &s.iId, 4 );
                 pIn->read( &s.iSize, 4 );
                 int iSBlocks = blkDiv(s.iSize, iBlockSize);
-                sio << "Myriad: - Stream::iId=" << s.iId
-                        << ", Stream::iSize=" << s.iSize
-                        << ", Stream::aBlocks=" << iSBlocks
-                        << ", pIn->tell()=" << pIn->tell() << sio.nl;
+        //      sio << "Myriad: - Stream::iId=" << s.iId
+        //              << ", Stream::iSize=" << s.iSize
+        //              << ", Stream::aBlocks=" << iSBlocks
+        //              << ", pIn->tell()=" << pIn->tell() << sio.nl;
                 for( int k = 0; k < iSBlocks; k++ )
                 {
                         int iBId;
                         pIn->read( &iBId, 4 );
-                        sio << "Myriad:   - iBId=" << iBId
-                                << ", iStartPos=" << iBId*iBlockSize
-                                << ", pIn->tell()=" << pIn->tell() << sio.nl;
+        //              sio << "Myriad:   - iBId=" << iBId
+        //                      << ", iStartPos=" << iBId*iBlockSize
+        //                      << ", pIn->tell()=" << pIn->tell() << sio.nl;
                         s.aBlocks.append( iBId );
                         bsBlockUsed.setBit( iBId );
                         if( (j == 0 && k == iHeaderBlocks-1) )
                         {
-                                sio << "Myriad:   - End of prepartition, unlocking skipping."
-                                        << sio.nl;
+        //                      sio << "Myriad:   - End of prepartition, unlocking skipping."
+        //                              << sio.nl;
                                 bCanSkip = true;
                                 MyriadStream *pTmp = new MyriadStream( *this, aStreams[0] );
-                                sio << "Myriad    - Position = " << pIn->tell() << sio.nl;
+        //                      sio << "Myriad    - Position = " << pIn->tell() << sio.nl;
                                 pTmp->setPos( pIn->tell() );
                                 delete pIn;
                                 delete pFakeHdr;
@@ -150,7 +151,7 @@ void Bu::Myriad::initialize()
         }
         delete pIn;
 
-        sio << "Myriad: Blocks used: " << bsBlockUsed.toString() << sio.nl;
+        //sio << "Myriad: Blocks used: " << bsBlockUsed.toString() << sio.nl;
 }
 
 void Bu::Myriad::initialize( int iBlockSize, int iPreAllocate )
@@ -171,8 +172,8 @@ void Bu::Myriad::initialize( int iBlockSize, int iPreAllocate )
 
         iPreAllocate += iHeaderBlocks;
 
-        sio << "Myriad: iHeaderSize=" << iHeaderSize << ", iBlockSize="
-                << iBlockSize << ", iHeaderBlocks=" << iHeaderBlocks << sio.nl;
+        //sio << "Myriad: iHeaderSize=" << iHeaderSize << ", iBlockSize="
+        //      << iBlockSize << ", iHeaderBlocks=" << iHeaderBlocks << sio.nl;
         
         bsBlockUsed.setSize( iPreAllocate, true );
 
@@ -181,7 +182,6 @@ void Bu::Myriad::initialize( int iBlockSize, int iPreAllocate )
         for( int j = 0; j < iPreAllocate; j++ )
         {
                 sStore.write( pBlock, iBlockSize );
-                pStr->aBlocks.append( j );
         }
         delete[] (char *)pBlock;
 
@@ -228,23 +228,26 @@ void Bu::Myriad::initialize( int iBlockSize, int iPreAllocate )
 
         aStreams.append( pStr );
 
-        sio << bsBlockUsed.toString() << sio.nl;
+        //sio << bsBlockUsed.toString() << " - " << pStr->aBlocks << sio.nl;
 
+        bHeaderChanged = true;
         //hStreams.insert( 0, BlockArray( 0 ) );
 }
 
 void Bu::Myriad::updateHeader()
 {
+        if( bHeaderChanged == false )
+                return;
         if( !sStore.canWrite() )
                 return;
 
         char cBuf;
         int iBuf;
 
-        for( StreamArray::iterator i = aStreams.begin(); i; i++ )
-        {
-                sio << "Myriad: Stream " << Fmt(4) << (*i)->iId << ": " << (*i)->aBlocks << sio.nl;
-        }
+        //for( StreamArray::iterator i = aStreams.begin(); i; i++ )
+        //{
+        //      sio << "Myriad: Stream " << Fmt(4) << (*i)->iId << ": " << (*i)->aBlocks << sio.nl;
+        //}
 
         // Compute the new size of the header.
         int iHeaderSize = 14 + 8*aStreams.getSize();
@@ -301,14 +304,16 @@ void Bu::Myriad::updateHeader()
                         sHdr.write( &(*i)->aBlocks[j], 4 );
                 }
         }
+        
+        bHeaderChanged = false;
 }
 
 int Bu::Myriad::createStream( int iPreAllocate )
 {
         Stream *pStr = new Stream();
         pStr->iId = aStreams.last()->iId+1;
-        sio << "Myriad: New stream id=" << pStr->iId << ", iPreAllocate="
-                << iPreAllocate << sio.nl;
+        //sio << "Myriad: New stream id=" << pStr->iId << ", iPreAllocate="
+        //      << iPreAllocate << sio.nl;
         pStr->iSize = 0;
         aStreams.append( pStr );
 
@@ -320,11 +325,15 @@ int Bu::Myriad::createStream( int iPreAllocate )
                 bsBlockUsed.setBit( iFreeBlock );
         }
 
+        bHeaderChanged = true;
+
         return pStr->iId;
 }
 
 int Bu::Myriad::findEmptyBlock()
 {
+        bHeaderChanged = true;
+
         for( int j = 0; j < bsBlockUsed.getSize(); j++ )
         {
                 if( bsBlockUsed.getBit( j ) == false )
@@ -349,7 +358,7 @@ void Bu::Myriad::deleteStream( int /*iID*/ )
 
 Bu::MyriadStream Bu::Myriad::openStream( int iId )
 {
-        sio << "Myriad:  Request to open stream: " << iId << sio.nl;
+        //sio << "Myriad:  Request to open stream: " << iId << sio.nl;
         return MyriadStream( *this, findStream( iId ) );
 }