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1 /*
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2 * File: requests.h
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3 * Author: msach
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4 *
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5 * Created on September 16, 2011, 3:11 PM
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6 */
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7
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8 #ifndef REQUESTS_H
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9 #define REQUESTS_H
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10
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11 #include "ProcrContext.h"
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12
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13 typedef struct _InterMasterReqst InterMasterReqst;
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14
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15 //============= Requests ===========
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16 //
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17
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18 //VMS Request is the carrier for Slave to Master requests
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19 // it has an embedded sub-type request that is pulled out
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20 // inside the plugin's request handler
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21 enum VMSReqstType //For Slave->Master requests
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22 {
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23 semantic = 1, //avoid starting enums at 0, for debug reasons
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24 createReq,
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25 dissipate,
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26 VMSSemantic //goes with VMSSemReqst below
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27 };
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28
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29 struct _VMSReqst
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30 {
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31 enum VMSReqstType reqType;//used for dissipate and in future for IO requests
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32 void *semReqData;
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33
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34 VMSReqst *nextReqst;
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35 };
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36 //VMSReqst
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37
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38 //This is a sub-type of Slave->Master requests.
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39 // It's for Slaves to invoke built-in VMS-core functions that have language-like
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40 // behavior.
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41 enum VMSSemReqstType //These are equivalent to semantic requests, but for
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42 { // VMS's services available directly to app, like OS
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43 createProbe = 1, // and probe services -- like a VMS-wide built-in lang
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44 openFile,
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45 otherIO
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46 };
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47
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48 typedef struct
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49 { enum VMSSemReqstType reqType;
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50 VirtProcr *requestingPr;
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51 char *nameStr; //for create probe
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52 }
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53 VMSSemReq;
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54
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55 //These are for Master to Master requests
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56 // They get re-cast to the appropriate sub-type of request
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57 enum InterMasterReqstType //For Master->Master
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58 {
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59 destVMSCore = 1, //avoid starting enums at 0, for debug reasons
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60 destPlugin
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61 };
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62
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63 struct _InterMasterReqst //Doing a trick to save space & time -- allocate
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64 { // space for a sub-type then cast first as InterMaster then as sub-type
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65 enum InterMasterReqstType reqType;
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66 InterMasterReqst *nextReqst;
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67 };
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68 //InterMasterReqst (defined above in typedef block)
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69
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70
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71 //These are a sub-type of InterMaster requests. The inter-master req gets
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72 // re-cast to be of this type, after checking
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73 //This ones for requests between internals of VMS-core.. such as malloc
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74 enum InterVMSCoreReqType
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75 {
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76 transfer_free_ptr = 1 //avoid starting enums at 0, for debug reasons
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77 };
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78
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79 //Doing a trick to save space & time -- allocate space
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80 // for this, cast first as InterMaster then as this
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81 typedef struct
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82 {
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83 enum InterMasterReqstType reqType; //duplicate InterMasterReqst at top
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84 InterMasterReqst *nextReqst;
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85
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86 enum InterVMSCoreReqType secondReqType;
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87 void *freePtr; //pile up fields, add as needed
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88 } InterVMSCoreReqst;
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89
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90 //This is for requests between plugins on different cores
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91 // Here, after casting, the pluginReq is extracted and handed to plugin
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92 //Doing a trick to save space & time -- allocate space
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93 // for this, cast first as InterMaster then as this
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94 typedef struct
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95 {
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96 enum InterMasterReqstType reqType; //copy InterMasterReqst at top
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97 InterMasterReqst *nextReqst;
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98
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99 void *pluginReq; //plugin will cast to approp type
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100 } InterPluginReqst;
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101
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102 #endif /* REQUESTS_H */
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103
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