Bu::Conduit now works exactly as it was advertised some time ago, it uses

Bu::QueueBuf and creates a really slick blocking inter-thread I/O system.

5 files changed, 320 insertions, 7 deletions

diff --git a/src/conduit.cpp b/src/conduit.cpp
index bb99526..cfa93d8 100644
--- a/src/conduit.cpp
+++ b/src/conduit.cpp
@@ -5,3 +5,229 @@
  * terms of the license contained in the file LICENSE.
  */
 
+#include "bu/conduit.h"
+
+Bu::Conduit::Conduit( int iBlockSize ) :
+        qb( iBlockSize ),
+        bBlocking( true ),
+        bOpen( true )
+{
+}
+
+Bu::Conduit::~Conduit()
+{
+}
+
+void Bu::Conduit::close()
+{
+        im.lock();
+//      qb.close();
+        bOpen = false;
+        
+        cBlock.signal();
+        im.unlock();
+}
+
+#include <stdio.h>
+Bu::size Bu::Conduit::read( void *pBuf, Bu::size nBytes )
+{
+        if( !isOpen() )
+        {
+                return 0;
+        }
+        im.lock();
+        if( bBlocking )
+        {
+                im.unlock();
+                cBlock.lock();
+                for(;;)
+                {
+                        im.lock();
+                        if( qb.getSize() == 0 && bOpen == false )
+                        {
+                                im.unlock();
+                                cBlock.unlock();
+                                return 0;
+                        }
+                        else if( qb.getSize() > 0 )
+                        {
+                                im.unlock();
+                                break;
+                        }
+                        im.unlock();
+
+                        cBlock.wait();
+                }
+
+                im.lock();
+                Bu::size iRet = qb.read( pBuf, nBytes );
+                im.unlock();
+
+                cBlock.unlock();
+                return iRet;
+        }
+        else
+        {
+                Bu::size iRet = qb.read( pBuf, nBytes );
+                im.unlock();
+
+                return iRet;
+        }
+}
+
+Bu::size Bu::Conduit::peek( void *pBuf, Bu::size nBytes )
+{
+        im.lock();
+        Bu::size iRet = qb.peek( pBuf, nBytes );
+        im.unlock();
+
+        return iRet;
+}
+
+Bu::size Bu::Conduit::peek( void *pBuf, Bu::size nBytes, Bu::size nSkip )
+{
+        im.lock();
+        Bu::size iRet = qb.peek( pBuf, nBytes, nSkip );
+        im.unlock();
+
+        return iRet;
+}
+
+Bu::size Bu::Conduit::write( const void *pBuf, Bu::size nBytes )
+{
+        im.lock();
+        if( bOpen == false )
+        {
+                im.unlock();
+                return 0;
+        }
+        Bu::size sRet = qb.write( pBuf, nBytes );
+        cBlock.signal();
+        im.unlock();
+
+        return sRet;
+}
+
+Bu::size Bu::Conduit::tell()
+{
+        im.lock();
+        Bu::size sRet = qb.tell();
+        im.unlock();
+        return sRet;
+}
+
+void Bu::Conduit::seek( Bu::size offset )
+{
+}
+
+void Bu::Conduit::setPos( Bu::size pos )
+{
+}
+
+void Bu::Conduit::setPosEnd( Bu::size pos )
+{
+}
+
+bool Bu::Conduit::isEos()
+{
+        im.lock();
+        bool bRet = qb.isEos();
+        im.unlock();
+        return bRet;
+}
+
+bool Bu::Conduit::isOpen()
+{
+        im.lock();
+        bool bRet = bOpen || (qb.getSize() > 0);
+        im.unlock();
+        return bRet;
+}
+
+void Bu::Conduit::flush()
+{
+}
+
+bool Bu::Conduit::canRead()
+{
+        im.lock();
+        bool bRet = qb.canRead();
+        im.unlock();
+        return bRet;
+}
+
+bool Bu::Conduit::canWrite()
+{
+        im.lock();
+        bool bRet = qb.canWrite();
+        im.unlock();
+        return bRet;
+}
+
+bool Bu::Conduit::isReadable()
+{
+        im.lock();
+        bool bRet = qb.isReadable();
+        im.unlock();
+        return bRet;
+}
+
+bool Bu::Conduit::isWritable()
+{
+        im.lock();
+        bool bRet = qb.isWritable();
+        im.unlock();
+        return bRet;
+}
+
+bool Bu::Conduit::isSeekable()
+{
+        im.lock();
+        bool bRet = qb.isSeekable();
+        im.unlock();
+        return bRet;
+}
+
+bool Bu::Conduit::isBlocking()
+{
+        im.lock();
+        bool bRet = bBlocking;
+        im.unlock();
+        return bRet;
+}
+
+void Bu::Conduit::setBlocking( bool bBlocking )
+{
+        im.lock();
+        this->bBlocking = bBlocking;
+        im.unlock();
+}
+
+void Bu::Conduit::setSize( Bu::size iSize )
+{
+}
+
+Bu::size Bu::Conduit::getSize() const
+{
+        im.lock();
+        Bu::size sRet = qb.getSize();
+        im.unlock();
+        return sRet;
+}
+
+Bu::size Bu::Conduit::getBlockSize() const
+{
+        im.lock();
+        Bu::size sRet = qb.getBlockSize();
+        im.unlock();
+        return sRet;
+}
+
+Bu::String Bu::Conduit::getLocation() const
+{
+        im.lock();
+        Bu::String sRet = qb.getLocation();
+        im.unlock();
+        return sRet;
+}
+
diff --git a/src/conduit.h b/src/conduit.h
index cc88667..72b8d52 100644
--- a/src/conduit.h
+++ b/src/conduit.h
@@ -10,6 +10,9 @@
 
 #include "bu/stream.h"
 #include "bu/string.h"
+#include "bu/queuebuf.h"
+#include "bu/itomutex.h"
+#include "bu/itocondition.h"
 
 namespace Bu
 {
@@ -20,6 +23,41 @@ namespace Bu
          */
         class Conduit : public Stream
         {
+        public:
+                Conduit( int iBlockSize=256 );
+                virtual ~Conduit();
+
+                virtual void close();
+                virtual Bu::size read( void *pBuf, Bu::size nBytes );
+                virtual Bu::size peek( void *pBuf, Bu::size nBytes );
+                virtual Bu::size peek( void *pBuf, Bu::size nBytes, Bu::size nSkip );
+                virtual Bu::size write( const void *pBuf, Bu::size nBytes );
+                virtual Bu::size tell();
+                virtual void seek( Bu::size offset );
+                virtual void setPos( Bu::size pos );
+                virtual void setPosEnd( Bu::size pos );
+                virtual bool isEos();
+                virtual bool isOpen();
+                virtual void flush();
+                virtual bool canRead();
+                virtual bool canWrite();
+                virtual bool isReadable();
+                virtual bool isWritable();
+                virtual bool isSeekable();
+                virtual bool isBlocking();
+                virtual void setBlocking( bool bBlocking=true );
+                virtual void setSize( Bu::size iSize );
+
+                virtual size getSize() const;
+                virtual size getBlockSize() const;
+                virtual Bu::String getLocation() const;
+
+        private:
+                QueueBuf qb;
+                mutable ItoMutex im;
+                ItoCondition cBlock;
+                bool bBlocking;
+                bool bOpen;
         };
 }
 
diff --git a/src/queuebuf.cpp b/src/queuebuf.cpp
index 69abf4b..98d8ee0 100644
--- a/src/queuebuf.cpp
+++ b/src/queuebuf.cpp
@@ -24,11 +24,6 @@ Bu::QueueBuf::~QueueBuf()
                 delete[] *i;
 }
 
-int Bu::QueueBuf::getSize()
-{
-        return iTotalSize;
-}
-
 void Bu::QueueBuf::close()
 {
         for( BlockList::iterator i = lBlocks.begin(); i; i++ )
diff --git a/src/queuebuf.h b/src/queuebuf.h
index 84b50e1..929ca35 100644
--- a/src/queuebuf.h
+++ b/src/queuebuf.h
@@ -24,8 +24,6 @@ namespace Bu
                 QueueBuf( int iBlockSize=256 );
                 virtual ~QueueBuf();
 
-                int getSize();
-
                 virtual void close();
                 virtual Bu::size read( void *pBuf, Bu::size nBytes );
                 virtual Bu::size peek( void *pBuf, Bu::size nBytes );
diff --git a/src/tests/conduit.cpp b/src/tests/conduit.cpp
new file mode 100644
index 0000000..d8d9e03
--- /dev/null
+++ b/src/tests/conduit.cpp
@@ -0,0 +1,56 @@
+#include "bu/conduit.h"
+#include "bu/sio.h"
+#include "bu/ito.h"
+
+using namespace Bu;
+
+class Reader : public Bu::Ito
+{
+public:
+        Reader( Bu::Conduit &rCond ) :
+                rCond( rCond )
+        {
+        }
+
+        virtual ~Reader()
+        {
+        }
+
+protected:
+        virtual void run()
+        {
+                while( rCond.isOpen() )
+                {
+                        char buf[1025];
+
+                        sio << "Reading..." << sio.flush;
+                        Bu::size iRead = rCond.read( buf, 1024 );
+                        buf[iRead] = '\0';
+                        sio << "got " << iRead << " >" << buf << "<" << sio.nl;
+                }
+
+                sio << "Conduit closed, exting thread." << sio.nl;
+        }
+
+private:
+        Bu::Conduit &rCond;
+};
+
+int main()
+{
+        Conduit c;
+        Reader r( c );
+        r.start();
+
+        sleep( 3 );
+        c.write("Hi there", 8 );
+        sleep( 3 );
+        c.write("Goodbye, soon.", 14 );
+        sleep( 3 );
+        c.write("...NOW!", 9 );
+        c.close();
+        sleep( 3 );
+
+        return 0;
+}
+