From f90fc6a679fe64c73bd4b403c2a4cbadde37c9ad Mon Sep 17 00:00:00 2001
From: Adi Oanca <adioanca@nowhere.fake>
Date: Sun, 31 Aug 2003 17:21:49 +0000
Subject: [PATCH] PortLink now uses a fixed buffer. Its base class is....
 BSession...

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4424 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 headers/private/app/PortLink.h | 118 ++++++++++++---------------------
 1 file changed, 44 insertions(+), 74 deletions(-)

diff --git a/headers/private/app/PortLink.h b/headers/private/app/PortLink.h
index 7fc1b811f8..5bedb4c404 100644
--- a/headers/private/app/PortLink.h
+++ b/headers/private/app/PortLink.h
@@ -1,88 +1,58 @@
-#ifndef _PORTLINK_H_
-#define _PORTLINK_H_
+#ifndef _PORTLINK_H
+#define _PORTLINK_H
 
-#include <Errors.h>
+
+#include <BeBuild.h>
 #include <OS.h>
-#include <SupportDefs.h>
-#include <Rect.h>
-#include <List.h>
+
+#include "Session.h"
 
 class PortMessage;
 
-/*!
-	\class PortLinkData PortLink.cpp
-	\brief Internal data storage class
-	
-	PortLinkData objects serve to hold attached data whilst it is waiting to be Flattened() 
-	and then Flushed(). There is no need for this to be used outside the PortLink class. 
-*/
-class PortLinkData
-{
+class PortLink : public BSession{
 public:
-	PortLinkData(void);
-	~PortLinkData(void);
-	status_t Set(const void *data, size_t size);
-	char *buffer;
-	size_t buffersize;
-};
-
-
-class PortLink
-{
-public:
-	class ReplyData
-	{
-		public:
-			ReplyData(void) { code=0; buffersize=0; buffer=NULL; }
-			~ReplyData(void) { if(buffer) delete buffer; }
-		int32 code;
-		ssize_t buffersize;
-		int8 *buffer;
-	};
-	PortLink(port_id port);
-	PortLink(const PortLink &link);
-	~PortLink(void);
-	void SetOpCode(int32 code);
-	void SetPort(port_id port);
-	port_id GetPort(void);
-	status_t Flush(bigtime_t timeout=B_INFINITE_TIMEOUT);
-	int8* FlushWithReply(int32 *code, status_t *status, ssize_t *buffersize,
-		bigtime_t timeout=B_INFINITE_TIMEOUT);
-	status_t FlushWithReply(PortLink::ReplyData *data,bigtime_t timeout=B_INFINITE_TIMEOUT);
-	status_t FlushWithReply(PortMessage *msg,bigtime_t timeout=B_INFINITE_TIMEOUT);
-	
-	status_t Attach(const void *data, size_t size);
-	template <class Type> status_t Attach(Type data)
+		class ReplyData
 		{
-			int32 size=sizeof(Type);
+			public:
+				ReplyData(void) { code=0; buffersize=0; buffer=NULL; }
+				~ReplyData(void) { if(buffer) delete buffer; }
+				
+			int32		code;
+			ssize_t		buffersize;
+			int8		*buffer;
+		};
+		
+					PortLink( port_id port );
+					PortLink( const PortLink &link );
+	virtual			~PortLink() { }
 
-		#ifdef CAPACITY_CHECKING
-			if(bufferlength+size>capacity)
-				return B_NO_MEMORY;
-		#endif
+		void		SetOpCode( int32 code );
+		void		SetPort( port_id port );
+		port_id		GetPort();
+		status_t	Flush( bigtime_t timeout = B_INFINITE_TIMEOUT );
+		int8*		FlushWithReply( int32 *code, status_t *status, ssize_t *buffersize,
+						bigtime_t timeout=B_INFINITE_TIMEOUT );
+		status_t	FlushWithReply( PortLink::ReplyData *data,bigtime_t timeout=B_INFINITE_TIMEOUT );
+		status_t	FlushWithReply( PortMessage *msg,bigtime_t timeout=B_INFINITE_TIMEOUT );
 	
-			// create a new storage object and stash the data
-			PortLinkData *pld=new PortLinkData;
-			if(pld->Set(&data,size)==B_OK)
-			{
-				attachlist->AddItem(pld);
-				bufferlength+=size;
+		status_t	Attach(const void *data, size_t size);
+		void		MakeEmpty();
+		template <class Type> status_t Attach(Type data)
+		{
+			int32 size	= sizeof(Type);
+
+			if (4096 - fSendPosition > size){
+				memcpy(fSendBuffer + fSendPosition, &data, size);
+				fSendPosition += size;
+				return B_OK;
 			}
-			else
-			{
-				delete pld;
-				return B_ERROR;
-			}
-			return B_OK;
+			return B_NO_MEMORY;
 		}
-	void MakeEmpty(void);
-protected:	
-	void FlattenData(int8 **buffer,int32 *size);
-	port_id target, replyport;
-	int32 opcode;
-	uint32 bufferlength,capacity;
-	bool port_ok;
-	BList *attachlist;
+		
+private:
+		bool	port_ok;
 };
 
+//extern _IMPEXP_BE _PortLink_ *main_session;
+
 #endif