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