msach@134: /* 
msach@134:  * File:   requests.h
msach@134:  * Author: msach
msach@134:  *
msach@134:  * Created on September 16, 2011, 3:11 PM
msach@134:  */
msach@134: 
msach@134: #ifndef REQUESTS_H
msach@134: #define	REQUESTS_H
msach@134: 
msach@134: #include "ProcrContext.h"
msach@134: 
msach@134: typedef struct _InterMasterReqst InterMasterReqst;
msach@134: 
msach@134: //============= Requests ===========
msach@134: //
msach@134: 
msach@134: //VMS Request is the carrier for Slave to Master requests
msach@134: // it has an embedded sub-type request that is pulled out
msach@134: // inside the plugin's request handler
msach@134: enum VMSReqstType   //For Slave->Master requests
msach@134:  { 
msach@134:    semantic = 1,    //avoid starting enums at 0, for debug reasons
msach@134:    createReq,
msach@134:    dissipate,
msach@134:    VMSSemantic      //goes with VMSSemReqst below
msach@134:  };
msach@134: 
msach@134: struct _VMSReqst
msach@134:  {
msach@134:    enum VMSReqstType  reqType;//used for dissipate and in future for IO requests
msach@134:    void              *semReqData;
msach@134: 
msach@134:    VMSReqst *nextReqst;
msach@134:  };
msach@134: //VMSReqst
msach@134: 
msach@134: //This is a sub-type of Slave->Master requests.
msach@134: // It's for Slaves to invoke built-in VMS-core functions that have language-like
msach@134: // behavior.
msach@134: enum VMSSemReqstType   //These are equivalent to semantic requests, but for
msach@134:  {                     // VMS's services available directly to app, like OS
msach@134:    createProbe = 1,    // and probe services -- like a VMS-wide built-in lang
msach@134:    openFile,
msach@134:    otherIO
msach@134:  };
msach@134: 
msach@134: typedef struct
msach@134:  { enum VMSSemReqstType reqType;
msach@134:    VirtProcr           *requestingPr;
msach@134:    char                *nameStr;  //for create probe
msach@134:  }
msach@134: VMSSemReq;
msach@134: 
msach@134: //These are for Master to Master requests
msach@134: // They get re-cast to the appropriate sub-type of request
msach@134: enum InterMasterReqstType    //For Master->Master
msach@134:  {
msach@134:    destVMSCore = 1,          //avoid starting enums at 0, for debug reasons
msach@134:    destPlugin
msach@134:  };
msach@134: 
msach@134: struct _InterMasterReqst //Doing a trick to save space & time -- allocate
msach@134:  {  // space for a sub-type then cast first as InterMaster then as sub-type
msach@134:    enum InterMasterReqstType  reqType;
msach@134:    InterMasterReqst *nextReqst;
msach@134:  };
msach@134: //InterMasterReqst  (defined above in typedef block)
msach@134: 
msach@134: 
msach@134: //These are a sub-type of InterMaster requests.  The inter-master req gets
msach@134: // re-cast to be of this type, after checking
msach@134: //This ones for requests between internals of VMS-core.. such as malloc
msach@134: enum InterVMSCoreReqType   
msach@134:  {
msach@134:    transfer_free_ptr = 1     //avoid starting enums at 0, for debug reasons
msach@134:  };
msach@134: 
msach@134: //Doing a trick to save space & time -- allocate space
msach@134: // for this, cast first as InterMaster then as this
msach@134: typedef struct  
msach@134:  {
msach@134:    enum InterMasterReqstType  reqType;  //duplicate InterMasterReqst at top
msach@134:    InterMasterReqst *nextReqst;
msach@134:    
msach@134:    enum InterVMSCoreReqType  secondReqType;
msach@134:    void                     *freePtr;  //pile up fields, add as needed
msach@134:  } InterVMSCoreReqst;
msach@134: 
msach@134: //This is for requests between plugins on different cores
msach@134: // Here, after casting, the pluginReq is extracted and handed to plugin
msach@134: //Doing a trick to save space & time -- allocate space
msach@134: // for this, cast first as InterMaster then as this
msach@134: typedef struct  
msach@134:  {
msach@134:    enum InterMasterReqstType  reqType;  //copy InterMasterReqst at top
msach@134:    InterMasterReqst          *nextReqst;
msach@134:    
msach@134:    void                      *pluginReq; //plugin will cast to approp type
msach@134:  } InterPluginReqst;
msach@134: 
msach@134: #endif	/* REQUESTS_H */
msach@134: