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1 /*
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2 * Copyright 2010 OpenSourceStewardshipFoundation
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3 *
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4 * Licensed under BSD
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <malloc.h>
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11 #include <inttypes.h>
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12 #include <sys/time.h>
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13
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14 #include "VMS.h"
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15 #include "ProcrContext.h"
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16 #include "Queue_impl/BlockingQueue.h"
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17 #include "Histogram/Histogram.h"
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18
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19 #include <unistd.h>
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20 #include <fcntl.h>
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21 #include <linux/types.h>
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22 #include <linux/perf_event.h>
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23 #include <errno.h>
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24 #include <sys/syscall.h>
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25 #include <linux/prctl.h>
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26
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27
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28 #define thdAttrs NULL
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29
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30 //===========================================================================
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31 void
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32 shutdownFn( void *dummy, VirtProcr *dummy2 );
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33
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34 SchedSlot **
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35 create_sched_slots();
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36
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37 void
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38 create_masterEnv();
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39
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40 void
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41 create_the_coreLoop_OS_threads();
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42
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43 MallocProlog *
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44 create_free_list();
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45
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46 void
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47 endOSThreadFn( void *initData, VirtProcr *animatingPr );
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48
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49 pthread_mutex_t suspendLock = PTHREAD_MUTEX_INITIALIZER;
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50 pthread_cond_t suspend_cond = PTHREAD_COND_INITIALIZER;
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51
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52 //===========================================================================
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53
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54 /*Setup has two phases:
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55 * 1) Semantic layer first calls init_VMS, which creates masterEnv, and puts
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56 * the master virt procr into the work-queue, ready for first "call"
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57 * 2) Semantic layer then does its own init, which creates the seed virt
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58 * procr inside the semantic layer, ready to schedule it when
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59 * asked by the first run of the masterLoop.
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60 *
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61 *This part is bit weird because VMS really wants to be "always there", and
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62 * have applications attach and detach.. for now, this VMS is part of
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63 * the app, so the VMS system starts up as part of running the app.
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64 *
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65 *The semantic layer is isolated from the VMS internals by making the
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66 * semantic layer do setup to a state that it's ready with its
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67 * initial virt procrs, ready to schedule them to slots when the masterLoop
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68 * asks. Without this pattern, the semantic layer's setup would
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69 * have to modify slots directly to assign the initial virt-procrs, and put
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70 * them into the readyToAnimateQ itself, breaking the isolation completely.
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71 *
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72 *
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73 *The semantic layer creates the initial virt procr(s), and adds its
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74 * own environment to masterEnv, and fills in the pointers to
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75 * the requestHandler and slaveScheduler plug-in functions
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76 */
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77
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78 /*This allocates VMS data structures, populates the master VMSProc,
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79 * and master environment, and returns the master environment to the semantic
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80 * layer.
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81 */
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82 void
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83 VMS__init()
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84 {
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85 create_masterEnv();
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86 create_the_coreLoop_OS_threads();
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87 }
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88
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89 #ifdef SEQUENTIAL
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90
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91 /*To initialize the sequential version, just don't create the threads
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92 */
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93 void
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94 VMS__init_Seq()
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95 {
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96 create_masterEnv();
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97 }
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98
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99 #endif
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100
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101 void
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102 create_masterEnv()
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103 { MasterEnv *masterEnv;
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104 VMSQueueStruc **readyToAnimateQs;
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105 int coreIdx;
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106 VirtProcr **masterVPs;
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107 SchedSlot ***allSchedSlots; //ptr to array of ptrs
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108
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109
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110 //Make the master env, which holds everything else
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111 _VMSMasterEnv = malloc( sizeof(MasterEnv) );
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112
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113 //Very first thing put into the master env is the free-list, seeded
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114 // with a massive initial chunk of memory.
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115 //After this, all other mallocs are VMS__malloc.
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116 _VMSMasterEnv->freeListHead = VMS_ext__create_free_list();
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117
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118
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119 //============================= MEASUREMENT STUFF ========================
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120 #ifdef MEAS__TIME_MALLOC
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121 _VMSMasterEnv->mallocTimeHist = makeFixedBinHistExt( 100, 0, 30,
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122 "malloc_time_hist");
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123 _VMSMasterEnv->freeTimeHist = makeFixedBinHistExt( 100, 0, 30,
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124 "free_time_hist");
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125 #endif
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126 #ifdef MEAS__TIME_PLUGIN
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127 _VMSMasterEnv->reqHdlrLowTimeHist = makeFixedBinHistExt( 100, 0, 200,
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128 "plugin_low_time_hist");
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129 _VMSMasterEnv->reqHdlrHighTimeHist = makeFixedBinHistExt( 100, 0, 200,
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130 "plugin_high_time_hist");
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131 #endif
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132 //========================================================================
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133
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134 //===================== Only VMS__malloc after this ====================
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135 masterEnv = (MasterEnv*)_VMSMasterEnv;
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136
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137 //Make a readyToAnimateQ for each core loop
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138 readyToAnimateQs = VMS__malloc( NUM_CORES * sizeof(VMSQueueStruc *) );
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139 masterVPs = VMS__malloc( NUM_CORES * sizeof(VirtProcr *) );
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140
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141 //One array for each core, 3 in array, core's masterVP scheds all
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142 allSchedSlots = VMS__malloc( NUM_CORES * sizeof(SchedSlot *) );
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143
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144 _VMSMasterEnv->numProcrsCreated = 0; //used by create procr
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145 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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146 {
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147 readyToAnimateQs[ coreIdx ] = makeVMSQ();
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148
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149 //Q: should give masterVP core-specific info as its init data?
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150 masterVPs[ coreIdx ] = VMS__create_procr( (VirtProcrFnPtr)&masterLoop, (void*)masterEnv );
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151 masterVPs[ coreIdx ]->coreAnimatedBy = coreIdx;
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152 masterVPs[ coreIdx ]->isMasterVP = TRUE;
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153 allSchedSlots[ coreIdx ] = create_sched_slots(); //makes for one core
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154 _VMSMasterEnv->numMasterInARow[ coreIdx ] = 0;
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155 _VMSMasterEnv->workStealingGates[ coreIdx ] = NULL;
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156 }
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157 _VMSMasterEnv->readyToAnimateQs = readyToAnimateQs;
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158 _VMSMasterEnv->masterVPs = masterVPs;
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159 _VMSMasterEnv->masterLock = UNLOCKED;
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160 _VMSMasterEnv->allSchedSlots = allSchedSlots;
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161 _VMSMasterEnv->workStealingLock = UNLOCKED;
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162
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163
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164 //Aug 19, 2010: no longer need to place initial masterVP into queue
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165 // because coreLoop now controls -- animates its masterVP when no work
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166
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167
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168 //============================= MEASUREMENT STUFF ========================
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169 #ifdef STATS__TURN_ON_PROBES
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170 _VMSMasterEnv->dynIntervalProbesInfo =
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171 makePrivDynArrayOfSize( (void***)&(_VMSMasterEnv->intervalProbes), 200);
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172
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173 _VMSMasterEnv->probeNameHashTbl = makeHashTable( 1000, &VMS__free );
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174
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175 //put creation time directly into master env, for fast retrieval
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176 struct timeval timeStamp;
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177 gettimeofday( &(timeStamp), NULL);
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178 _VMSMasterEnv->createPtInSecs =
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179 timeStamp.tv_sec +(timeStamp.tv_usec/1000000.0);
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180 #endif
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181 #ifdef MEAS__TIME_MASTER_LOCK
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182 _VMSMasterEnv->masterLockLowTimeHist = makeFixedBinHist( 50, 0, 2,
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183 "master lock low time hist");
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184 _VMSMasterEnv->masterLockHighTimeHist = makeFixedBinHist( 50, 0, 100,
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185 "master lock high time hist");
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186 #endif
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187
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188 MakeTheMeasHists();
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189
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190
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191 #ifdef DETECT_LOOP_GRAPH
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192
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193 #endif
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194
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195 #ifdef MEAS__PERF_COUNTERS
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196 /*
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197 _VMSMasterEnv->counter_history = VMS__malloc(10*sizeof(void*));
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198 _VMSMasterEnv->counter_history_array_info = makePrivDynArrayInfoFrom((void***)&(_VMSMasterEnv->counter_history),10);
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199 */
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200 //printf("Creating HW counters...");
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201 /*
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202 FILE* output;
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203 int n;
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204 char filename[255];
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205 for(n=0;n<255;n++)
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206 {
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207 sprintf(filename, "./counters/Counters.%d.csv",n);
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208 output = fopen(filename,"r");
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209 if(output)
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210 {
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211 fclose(output);
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212 }else{
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213 break;
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214 }
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215 }
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216 printf("Saving Counter measurements to File: %s ...\n", filename);
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217 output = fopen(filename,"w+");
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218 _VMSMasterEnv->counteroutput = output;
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219 */
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220
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221 struct perf_event_attr hw_event;
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222 memset(&hw_event,0,sizeof(hw_event));
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223 hw_event.type = PERF_TYPE_HARDWARE;
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224 hw_event.size = sizeof(hw_event);
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225 hw_event.disabled = 1;
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226 hw_event.freq = 0;
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227 hw_event.inherit = 1; /* children inherit it */
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228 hw_event.pinned = 1; /* must always be on PMU */
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229 hw_event.exclusive = 0; /* only group on PMU */
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230 hw_event.exclude_user = 0; /* don't count user */
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231 hw_event.exclude_kernel = 1; /* ditto kernel */
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232 hw_event.exclude_hv = 1; /* ditto hypervisor */
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233 hw_event.exclude_idle = 0; /* don't count when idle */
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234 hw_event.mmap = 0; /* include mmap data */
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235 hw_event.comm = 0; /* include comm data */
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236
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237
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238 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
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239 {
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240 hw_event.config = 0x0000000000000000; //cycles
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241 _VMSMasterEnv->cycles_counter_fd[coreIdx] = syscall(__NR_perf_event_open, &hw_event,
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242 0,//pid_t pid,
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243 coreIdx,//int cpu,
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244 -1,//int group_fd,
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245 0//unsigned long flags
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246 );
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247 if (_VMSMasterEnv->cycles_counter_fd[coreIdx]<0){
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248 fprintf(stderr,"On core %d: ",coreIdx);
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249 perror("Failed to open cycles counter");
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250 }
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251 hw_event.config = 0x0000000000000001; //instrs
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252 _VMSMasterEnv->instrs_counter_fd[coreIdx] = syscall(__NR_perf_event_open, &hw_event,
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253 0,//pid_t pid,
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254 coreIdx,//int cpu,
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255 -1,//int group_fd,
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256 0//unsigned long flags
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257 );
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258 if (_VMSMasterEnv->instrs_counter_fd[coreIdx]<0){
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259 fprintf(stderr,"On core %d: ",coreIdx);
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260 perror("Failed to open instrs counter");
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261 }
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262 }
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263 prctl(PR_TASK_PERF_EVENTS_ENABLE);
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264 uint64 tmpc,tmpi;
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265 saveCyclesAndInstrs(0,tmpc,tmpi);
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266 printf("Start: cycles = %llu, instrs = %llu\n",tmpc,tmpi);
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267 #endif
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268
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269 //========================================================================
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270
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271 }
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272
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273 SchedSlot **
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274 create_sched_slots()
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275 { SchedSlot **schedSlots;
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276 int i;
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277
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278 schedSlots = VMS__malloc( NUM_SCHED_SLOTS * sizeof(SchedSlot *) );
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279
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280 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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281 {
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282 schedSlots[i] = VMS__malloc( sizeof(SchedSlot) );
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283
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284 //Set state to mean "handling requests done, slot needs filling"
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285 schedSlots[i]->workIsDone = FALSE;
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286 schedSlots[i]->needsProcrAssigned = TRUE;
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287 }
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288 return schedSlots;
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289 }
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290
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291
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292 void
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293 freeSchedSlots( SchedSlot **schedSlots )
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294 { int i;
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295 for( i = 0; i < NUM_SCHED_SLOTS; i++ )
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296 {
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297 VMS__free( schedSlots[i] );
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298 }
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299 VMS__free( schedSlots );
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300 }
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301
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302
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303 void
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304 create_the_coreLoop_OS_threads()
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305 {
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306 //========================================================================
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307 // Create the Threads
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308 int coreIdx, retCode;
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309
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310 //Need the threads to be created suspended, and wait for a signal
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311 // before proceeding -- gives time after creating to initialize other
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312 // stuff before the coreLoops set off.
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313 _VMSMasterEnv->setupComplete = 0;
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314
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315 //Make the threads that animate the core loops
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316 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
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Me@53
|
317 { coreLoopThdParams[coreIdx] = VMS__malloc( sizeof(ThdParams) );
|
|
Me@28
|
318 coreLoopThdParams[coreIdx]->coreNum = coreIdx;
|
|
Me@28
|
319
|
|
Me@28
|
320 retCode =
|
|
Me@28
|
321 pthread_create( &(coreLoopThdHandles[coreIdx]),
|
|
Me@28
|
322 thdAttrs,
|
|
Me@28
|
323 &coreLoop,
|
|
Me@28
|
324 (void *)(coreLoopThdParams[coreIdx]) );
|
|
Me@50
|
325 if(retCode){printf("ERROR creating thread: %d\n", retCode); exit(1);}
|
|
Me@28
|
326 }
|
|
Me@28
|
327 }
|
|
Me@28
|
328
|
|
Me@0
|
329 /*Semantic layer calls this when it want the system to start running..
|
|
Me@0
|
330 *
|
|
Me@24
|
331 *This starts the core loops running then waits for them to exit.
|
|
Me@0
|
332 */
|
|
Me@12
|
333 void
|
|
Me@24
|
334 VMS__start_the_work_then_wait_until_done()
|
|
Me@12
|
335 { int coreIdx;
|
|
Me@24
|
336 //Start the core loops running
|
|
Me@25
|
337
|
|
Me@25
|
338 //tell the core loop threads that setup is complete
|
|
Me@25
|
339 //get lock, to lock out any threads still starting up -- they'll see
|
|
Me@25
|
340 // that setupComplete is true before entering while loop, and so never
|
|
Me@25
|
341 // wait on the condition
|
|
Me@26
|
342 pthread_mutex_lock( &suspendLock );
|
|
Me@25
|
343 _VMSMasterEnv->setupComplete = 1;
|
|
Me@26
|
344 pthread_mutex_unlock( &suspendLock );
|
|
Me@26
|
345 pthread_cond_broadcast( &suspend_cond );
|
|
Me@25
|
346
|
|
Me@25
|
347
|
|
Me@24
|
348 //wait for all to complete
|
|
Me@8
|
349 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@8
|
350 {
|
|
Me@25
|
351 pthread_join( coreLoopThdHandles[coreIdx], NULL );
|
|
Me@24
|
352 }
|
|
Me@25
|
353
|
|
Me@24
|
354 //NOTE: do not clean up VMS env here -- semantic layer has to have
|
|
Me@24
|
355 // a chance to clean up its environment first, then do a call to free
|
|
Me@24
|
356 // the Master env and rest of VMS locations
|
|
Me@8
|
357 }
|
|
Me@0
|
358
|
|
msach@70
|
359 #ifdef SEQUENTIAL
|
|
Me@28
|
360 /*Only difference between version with an OS thread pinned to each core and
|
|
Me@28
|
361 * the sequential version of VMS is VMS__init_Seq, this, and coreLoop_Seq.
|
|
Me@28
|
362 */
|
|
Me@28
|
363 void
|
|
Me@28
|
364 VMS__start_the_work_then_wait_until_done_Seq()
|
|
Me@28
|
365 {
|
|
Me@28
|
366 //Instead of un-suspending threads, just call the one and only
|
|
Me@28
|
367 // core loop (sequential version), in the main thread.
|
|
Me@28
|
368 coreLoop_Seq( NULL );
|
|
msach@75
|
369 flushRegisters();
|
|
Me@28
|
370
|
|
Me@28
|
371 }
|
|
msach@70
|
372 #endif
|
|
Me@28
|
373
|
|
Me@50
|
374 inline VirtProcr *
|
|
Me@50
|
375 VMS__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
376 { VirtProcr *newPr;
|
|
msach@76
|
377 void *stackLocs;
|
|
Me@50
|
378
|
|
Me@50
|
379 newPr = VMS__malloc( sizeof(VirtProcr) );
|
|
Me@50
|
380 stackLocs = VMS__malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
381 if( stackLocs == 0 )
|
|
Me@50
|
382 { perror("VMS__malloc stack"); exit(1); }
|
|
Me@50
|
383
|
|
msach@69
|
384 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
385 }
|
|
Me@50
|
386
|
|
Me@50
|
387 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
388 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
389 * a VMS virtual processor.
|
|
Me@50
|
390 */
|
|
Me@50
|
391 inline VirtProcr *
|
|
Me@50
|
392 VMS_ext__create_procr( VirtProcrFnPtr fnPtr, void *initialData )
|
|
Me@50
|
393 { VirtProcr *newPr;
|
|
Me@50
|
394 char *stackLocs;
|
|
Me@50
|
395
|
|
Me@50
|
396 newPr = malloc( sizeof(VirtProcr) );
|
|
Me@50
|
397 stackLocs = malloc( VIRT_PROCR_STACK_SIZE );
|
|
Me@50
|
398 if( stackLocs == 0 )
|
|
Me@50
|
399 { perror("malloc stack"); exit(1); }
|
|
Me@50
|
400
|
|
msach@69
|
401 return create_procr_helper( newPr, fnPtr, initialData, stackLocs );
|
|
Me@50
|
402 }
|
|
Me@50
|
403
|
|
Me@8
|
404
|
|
Me@64
|
405 /*Anticipating multi-tasking
|
|
Me@64
|
406 */
|
|
Me@64
|
407 void *
|
|
Me@64
|
408 VMS__give_sem_env_for( VirtProcr *animPr )
|
|
Me@64
|
409 {
|
|
Me@64
|
410 return _VMSMasterEnv->semanticEnv;
|
|
Me@64
|
411 }
|
|
Me@64
|
412 //===========================================================================
|
|
Me@26
|
413 /*there is a label inside this function -- save the addr of this label in
|
|
Me@0
|
414 * the callingPr struc, as the pick-up point from which to start the next
|
|
Me@0
|
415 * work-unit for that procr. If turns out have to save registers, then
|
|
Me@0
|
416 * save them in the procr struc too. Then do assembly jump to the CoreLoop's
|
|
Me@0
|
417 * "done with work-unit" label. The procr struc is in the request in the
|
|
Me@0
|
418 * slave that animated the just-ended work-unit, so all the state is saved
|
|
Me@0
|
419 * there, and will get passed along, inside the request handler, to the
|
|
Me@0
|
420 * next work-unit for that procr.
|
|
Me@0
|
421 */
|
|
Me@8
|
422 void
|
|
Me@38
|
423 VMS__suspend_procr( VirtProcr *animatingPr )
|
|
Me@55
|
424 {
|
|
Me@30
|
425
|
|
Me@30
|
426 //The request to master will cause this suspended virt procr to get
|
|
Me@30
|
427 // scheduled again at some future point -- to resume, core loop jumps
|
|
Me@30
|
428 // to the resume point (below), which causes restore of saved regs and
|
|
Me@30
|
429 // "return" from this call.
|
|
msach@71
|
430 //animatingPr->nextInstrPt = &&ResumePt;
|
|
Me@30
|
431
|
|
Me@30
|
432 //return ownership of the virt procr and sched slot to Master virt pr
|
|
Me@38
|
433 animatingPr->schedSlot->workIsDone = TRUE;
|
|
Me@1
|
434
|
|
Me@41
|
435 //=========================== Measurement stuff ========================
|
|
Me@38
|
436 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
437 //record time stamp: compare to time-stamp recorded below
|
|
Me@38
|
438 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
|
|
Me@38
|
439 #endif
|
|
nengel@186
|
440 #ifdef MEAS__PERF_COUNTERS
|
|
nengel@186
|
441 //start work
|
|
nengel@186
|
442 uint64 cycles,instrs;
|
|
nengel@186
|
443 saveCyclesAndInstrs(animatingPr->coreAnimatedBy,cycles, instrs);
|
|
nengel@193
|
444 (*(_VMSMasterEnv->counterHandler))(HwResponderInvocation_start,animatingPr->procrID,animatingPr->numTimesScheduled,animatingPr,cycles,instrs);
|
|
nengel@186
|
445 #endif
|
|
Me@41
|
446 //=======================================================================
|
|
Me@30
|
447
|
|
msach@71
|
448 switchToCoreLoop(animatingPr);
|
|
msach@71
|
449 flushRegisters();
|
|
Me@55
|
450
|
|
Me@55
|
451 //=======================================================================
|
|
Me@30
|
452
|
|
Me@38
|
453 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@41
|
454 //NOTE: only take low part of count -- do sanity check when take diff
|
|
Me@38
|
455 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
|
|
Me@38
|
456 #endif
|
|
Me@30
|
457
|
|
Me@0
|
458 return;
|
|
Me@0
|
459 }
|
|
Me@0
|
460
|
|
Me@22
|
461
|
|
Me@22
|
462
|
|
Me@50
|
463 /*For this implementation of VMS, it may not make much sense to have the
|
|
Me@50
|
464 * system of requests for creating a new processor done this way.. but over
|
|
Me@50
|
465 * the scope of single-master, multi-master, mult-tasking, OS-implementing,
|
|
Me@50
|
466 * distributed-memory, and so on, this gives VMS implementation a chance to
|
|
Me@50
|
467 * do stuff before suspend, in the AppVP, and in the Master before the plugin
|
|
Me@50
|
468 * is called, as well as in the lang-lib before this is called, and in the
|
|
Me@50
|
469 * plugin. So, this gives both VMS and language implementations a chance to
|
|
Me@50
|
470 * intercept at various points and do order-dependent stuff.
|
|
Me@50
|
471 *Having a standard VMSNewPrReqData struc allows the language to create and
|
|
Me@50
|
472 * free the struc, while VMS knows how to get the newPr if it wants it, and
|
|
Me@50
|
473 * it lets the lang have lang-specific data related to creation transported
|
|
Me@50
|
474 * to the plugin.
|
|
Me@50
|
475 */
|
|
Me@50
|
476 void
|
|
Me@50
|
477 VMS__send_create_procr_req( void *semReqData, VirtProcr *reqstingPr )
|
|
Me@50
|
478 { VMSReqst req;
|
|
Me@50
|
479
|
|
Me@50
|
480 req.reqType = createReq;
|
|
Me@50
|
481 req.semReqData = semReqData;
|
|
Me@50
|
482 req.nextReqst = reqstingPr->requests;
|
|
Me@50
|
483 reqstingPr->requests = &req;
|
|
Me@50
|
484
|
|
Me@50
|
485 VMS__suspend_procr( reqstingPr );
|
|
Me@50
|
486 }
|
|
Me@50
|
487
|
|
Me@22
|
488
|
|
Me@38
|
489 /*
|
|
Me@22
|
490 *This adds a request to dissipate, then suspends the processor so that the
|
|
Me@22
|
491 * request handler will receive the request. The request handler is what
|
|
Me@22
|
492 * does the work of freeing memory and removing the processor from the
|
|
Me@22
|
493 * semantic environment's data structures.
|
|
Me@22
|
494 *The request handler also is what figures out when to shutdown the VMS
|
|
Me@22
|
495 * system -- which causes all the core loop threads to die, and returns from
|
|
Me@22
|
496 * the call that started up VMS to perform the work.
|
|
Me@22
|
497 *
|
|
Me@22
|
498 *This form is a bit misleading to understand if one is trying to figure out
|
|
Me@22
|
499 * how VMS works -- it looks like a normal function call, but inside it
|
|
Me@22
|
500 * sends a request to the request handler and suspends the processor, which
|
|
Me@22
|
501 * jumps out of the VMS__dissipate_procr function, and out of all nestings
|
|
Me@22
|
502 * above it, transferring the work of dissipating to the request handler,
|
|
Me@22
|
503 * which then does the actual work -- causing the processor that animated
|
|
Me@22
|
504 * the call of this function to disappear and the "hanging" state of this
|
|
Me@22
|
505 * function to just poof into thin air -- the virtual processor's trace
|
|
Me@22
|
506 * never returns from this call, but instead the virtual processor's trace
|
|
Me@22
|
507 * gets suspended in this call and all the virt processor's state disap-
|
|
Me@22
|
508 * pears -- making that suspend the last thing in the virt procr's trace.
|
|
Me@8
|
509 */
|
|
Me@8
|
510 void
|
|
Me@53
|
511 VMS__send_dissipate_req( VirtProcr *procrToDissipate )
|
|
Me@50
|
512 { VMSReqst req;
|
|
Me@22
|
513
|
|
Me@50
|
514 req.reqType = dissipate;
|
|
Me@50
|
515 req.nextReqst = procrToDissipate->requests;
|
|
Me@50
|
516 procrToDissipate->requests = &req;
|
|
Me@50
|
517
|
|
Me@22
|
518 VMS__suspend_procr( procrToDissipate );
|
|
Me@50
|
519 }
|
|
Me@50
|
520
|
|
Me@50
|
521
|
|
Me@50
|
522 /* "ext" designates that it's for use outside the VMS system -- should only
|
|
Me@50
|
523 * be called from main thread or other thread -- never from code animated by
|
|
Me@50
|
524 * a VMS virtual processor.
|
|
Me@50
|
525 *
|
|
Me@50
|
526 *Use this version to dissipate VPs created outside the VMS system.
|
|
Me@50
|
527 */
|
|
Me@50
|
528 void
|
|
Me@50
|
529 VMS_ext__dissipate_procr( VirtProcr *procrToDissipate )
|
|
Me@50
|
530 {
|
|
Me@50
|
531 //NOTE: initialData was given to the processor, so should either have
|
|
Me@50
|
532 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@50
|
533 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@50
|
534 // itself
|
|
Me@50
|
535 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
536 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
537 free( procrToDissipate->startOfStack );
|
|
Me@50
|
538 free( procrToDissipate );
|
|
Me@50
|
539 }
|
|
Me@50
|
540
|
|
Me@22
|
541
|
|
Me@22
|
542
|
|
Me@53
|
543 /*This call's name indicates that request is malloc'd -- so req handler
|
|
Me@53
|
544 * has to free any extra requests tacked on before a send, using this.
|
|
Me@53
|
545 *
|
|
Me@53
|
546 * This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@53
|
547 * request data-struct that is mallocd. The sem request doesn't need to
|
|
Me@53
|
548 * be malloc'd if this is called inside the same call chain before the
|
|
Me@53
|
549 * send of the last request is called.
|
|
Me@53
|
550 *
|
|
Me@53
|
551 *The request handler has to call VMS__free_VMSReq for any of these
|
|
Me@22
|
552 */
|
|
Me@22
|
553 inline void
|
|
Me@53
|
554 VMS__add_sem_request_in_mallocd_VMSReqst( void *semReqData,
|
|
Me@53
|
555 VirtProcr *callingPr )
|
|
Me@53
|
556 { VMSReqst *req;
|
|
Me@22
|
557
|
|
Me@53
|
558 req = VMS__malloc( sizeof(VMSReqst) );
|
|
Me@53
|
559 req->reqType = semantic;
|
|
Me@53
|
560 req->semReqData = semReqData;
|
|
Me@53
|
561 req->nextReqst = callingPr->requests;
|
|
Me@53
|
562 callingPr->requests = req;
|
|
Me@22
|
563 }
|
|
Me@22
|
564
|
|
Me@50
|
565 /*This inserts the semantic-layer's request data into standard VMS carrier
|
|
Me@50
|
566 * request data-struct is allocated on stack of this call & ptr to it sent
|
|
Me@50
|
567 * to plugin
|
|
Me@50
|
568 *Then it does suspend, to cause request to be sent.
|
|
Me@50
|
569 */
|
|
Me@50
|
570 inline void
|
|
Me@50
|
571 VMS__send_sem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
572 { VMSReqst req;
|
|
Me@22
|
573
|
|
Me@50
|
574 req.reqType = semantic;
|
|
Me@50
|
575 req.semReqData = semReqData;
|
|
Me@50
|
576 req.nextReqst = callingPr->requests;
|
|
Me@50
|
577 callingPr->requests = &req;
|
|
Me@50
|
578
|
|
Me@50
|
579 VMS__suspend_procr( callingPr );
|
|
Me@50
|
580 }
|
|
Me@50
|
581
|
|
Me@50
|
582
|
|
Me@50
|
583 inline void
|
|
Me@50
|
584 VMS__send_VMSSem_request( void *semReqData, VirtProcr *callingPr )
|
|
Me@50
|
585 { VMSReqst req;
|
|
Me@50
|
586
|
|
Me@50
|
587 req.reqType = VMSSemantic;
|
|
Me@50
|
588 req.semReqData = semReqData;
|
|
Me@50
|
589 req.nextReqst = callingPr->requests; //gab any other preceeding
|
|
Me@50
|
590 callingPr->requests = &req;
|
|
Me@50
|
591
|
|
Me@50
|
592 VMS__suspend_procr( callingPr );
|
|
Me@50
|
593 }
|
|
Me@50
|
594
|
|
Me@50
|
595
|
|
Me@50
|
596 /*
|
|
Me@38
|
597 */
|
|
Me@24
|
598 VMSReqst *
|
|
Me@50
|
599 VMS__take_next_request_out_of( VirtProcr *procrWithReq )
|
|
Me@31
|
600 { VMSReqst *req;
|
|
Me@31
|
601
|
|
Me@31
|
602 req = procrWithReq->requests;
|
|
Me@38
|
603 if( req == NULL ) return NULL;
|
|
Me@31
|
604
|
|
Me@31
|
605 procrWithReq->requests = procrWithReq->requests->nextReqst;
|
|
Me@50
|
606 return req;
|
|
Me@24
|
607 }
|
|
Me@22
|
608
|
|
Me@24
|
609
|
|
Me@24
|
610 inline void *
|
|
Me@24
|
611 VMS__take_sem_reqst_from( VMSReqst *req )
|
|
Me@24
|
612 {
|
|
Me@24
|
613 return req->semReqData;
|
|
Me@24
|
614 }
|
|
Me@24
|
615
|
|
Me@24
|
616
|
|
Me@24
|
617
|
|
Me@50
|
618 /* This is for OS requests and VMS infrastructure requests, such as to create
|
|
Me@50
|
619 * a probe -- a probe is inside the heart of VMS-core, it's not part of any
|
|
Me@50
|
620 * language -- but it's also a semantic thing that's triggered from and used
|
|
Me@50
|
621 * in the application.. so it crosses abstractions.. so, need some special
|
|
Me@50
|
622 * pattern here for handling such requests.
|
|
Me@52
|
623 * Doing this just like it were a second language sharing VMS-core.
|
|
Me@52
|
624 *
|
|
Me@50
|
625 * This is called from the language's request handler when it sees a request
|
|
Me@50
|
626 * of type VMSSemReq
|
|
Me@52
|
627 *
|
|
Me@52
|
628 * TODO: Later change this, to give probes their own separate plugin & have
|
|
Me@52
|
629 * VMS-core steer the request to appropriate plugin
|
|
Me@52
|
630 * Do the same for OS calls -- look later at it..
|
|
Me@50
|
631 */
|
|
Me@50
|
632 void inline
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|
Me@50
|
633 VMS__handle_VMSSemReq( VMSReqst *req, VirtProcr *requestingPr, void *semEnv,
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|
Me@50
|
634 ResumePrFnPtr resumePrFnPtr )
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|
Me@50
|
635 { VMSSemReq *semReq;
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|
Me@50
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636 IntervalProbe *newProbe;
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|
Me@24
|
637
|
|
Me@50
|
638 semReq = req->semReqData;
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Me@24
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639
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Me@50
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640 newProbe = VMS__malloc( sizeof(IntervalProbe) );
|
|
Me@65
|
641 newProbe->nameStr = VMS__strDup( semReq->nameStr );
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|
Me@50
|
642 newProbe->hist = NULL;
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|
Me@50
|
643 newProbe->schedChoiceWasRecorded = FALSE;
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|
Me@53
|
644
|
|
Me@53
|
645 //This runs in masterVP, so no race-condition worries
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Me@50
|
646 newProbe->probeID =
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|
Me@50
|
647 addToDynArray( newProbe, _VMSMasterEnv->dynIntervalProbesInfo );
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Me@50
|
648
|
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Me@53
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649 requestingPr->dataRetFromReq = newProbe;
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|
Me@50
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650
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|
Me@50
|
651 (*resumePrFnPtr)( requestingPr, semEnv );
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|
Me@22
|
652 }
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Me@22
|
653
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Me@22
|
654
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|
Me@22
|
655
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|
Me@24
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656 /*This must be called by the request handler plugin -- it cannot be called
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|
Me@24
|
657 * from the semantic library "dissipate processor" function -- instead, the
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|
Me@50
|
658 * semantic layer has to generate a request, and the plug-in calls this
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|
Me@24
|
659 * function.
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Me@24
|
660 *The reason is that this frees the virtual processor's stack -- which is
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|
Me@24
|
661 * still in use inside semantic library calls!
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|
Me@24
|
662 *
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|
Me@24
|
663 *This frees or recycles all the state owned by and comprising the VMS
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|
Me@24
|
664 * portion of the animating virtual procr. The request handler must first
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|
Me@24
|
665 * free any semantic data created for the processor that didn't use the
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|
Me@24
|
666 * VMS_malloc mechanism. Then it calls this, which first asks the malloc
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|
Me@24
|
667 * system to disown any state that did use VMS_malloc, and then frees the
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|
Me@24
|
668 * statck and the processor-struct itself.
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|
Me@24
|
669 *If the dissipated processor is the sole (remaining) owner of VMS__malloc'd
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|
Me@24
|
670 * state, then that state gets freed (or sent to recycling) as a side-effect
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|
Me@24
|
671 * of dis-owning it.
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|
Me@24
|
672 */
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|
Me@24
|
673 void
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|
Me@53
|
674 VMS__dissipate_procr( VirtProcr *animatingPr )
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|
Me@24
|
675 {
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|
Me@24
|
676 //dis-own all locations owned by this processor, causing to be freed
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|
Me@24
|
677 // any locations that it is (was) sole owner of
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|
Me@29
|
678 //TODO: implement VMS__malloc system, including "give up ownership"
|
|
Me@24
|
679
|
|
Me@24
|
680
|
|
Me@24
|
681 //NOTE: initialData was given to the processor, so should either have
|
|
Me@24
|
682 // been alloc'd with VMS__malloc, or freed by the level above animPr.
|
|
Me@24
|
683 //So, all that's left to free here is the stack and the VirtProcr struc
|
|
Me@24
|
684 // itself
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|
Me@50
|
685 //Note, should not stack-allocate initial data -- no guarantee, in
|
|
Me@50
|
686 // general that creating processor will outlive ones it creates.
|
|
Me@50
|
687 VMS__free( animatingPr->startOfStack );
|
|
Me@50
|
688 VMS__free( animatingPr );
|
|
Me@24
|
689 }
|
|
Me@24
|
690
|
|
Me@24
|
691
|
|
Me@53
|
692 //TODO: look at architecting cleanest separation between request handler
|
|
Me@29
|
693 // and master loop, for dissipate, create, shutdown, and other non-semantic
|
|
Me@29
|
694 // requests. Issue is chain: one removes requests from AppVP, one dispatches
|
|
Me@29
|
695 // on type of request, and one handles each type.. but some types require
|
|
Me@29
|
696 // action from both request handler and master loop -- maybe just give the
|
|
Me@29
|
697 // request handler calls like: VMS__handle_X_request_type
|
|
Me@24
|
698
|
|
Me@29
|
699
|
|
Me@29
|
700 /*This is called by the semantic layer's request handler when it decides its
|
|
Me@29
|
701 * time to shut down the VMS system. Calling this causes the core loop OS
|
|
Me@29
|
702 * threads to exit, which unblocks the entry-point function that started up
|
|
Me@29
|
703 * VMS, and allows it to grab the result and return to the original single-
|
|
Me@29
|
704 * threaded application.
|
|
Me@22
|
705 *
|
|
Me@29
|
706 *The _VMSMasterEnv is needed by this shut down function, so the create-seed-
|
|
Me@29
|
707 * and-wait function has to free a bunch of stuff after it detects the
|
|
Me@29
|
708 * threads have all died: the masterEnv, the thread-related locations,
|
|
Me@29
|
709 * masterVP any AppVPs that might still be allocated and sitting in the
|
|
Me@29
|
710 * semantic environment, or have been orphaned in the _VMSWorkQ.
|
|
Me@29
|
711 *
|
|
Me@53
|
712 *NOTE: the semantic plug-in is expected to use VMS__malloc to get all the
|
|
Me@29
|
713 * locations it needs, and give ownership to masterVP. Then, they will be
|
|
Me@53
|
714 * automatically freed.
|
|
Me@22
|
715 *
|
|
Me@29
|
716 *In here,create one core-loop shut-down processor for each core loop and put
|
|
Me@31
|
717 * them all directly into the readyToAnimateQ.
|
|
Me@29
|
718 *Note, this function can ONLY be called after the semantic environment no
|
|
Me@29
|
719 * longer cares if AppVPs get animated after the point this is called. In
|
|
Me@29
|
720 * other words, this can be used as an abort, or else it should only be
|
|
Me@29
|
721 * called when all AppVPs have finished dissipate requests -- only at that
|
|
Me@29
|
722 * point is it sure that all results have completed.
|
|
Me@22
|
723 */
|
|
Me@22
|
724 void
|
|
Me@53
|
725 VMS__shutdown()
|
|
Me@8
|
726 { int coreIdx;
|
|
Me@14
|
727 VirtProcr *shutDownPr;
|
|
Me@22
|
728
|
|
Me@29
|
729 //create the shutdown processors, one for each core loop -- put them
|
|
Me@31
|
730 // directly into the Q -- each core will die when gets one
|
|
Me@8
|
731 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@50
|
732 { //Note, this is running in the master
|
|
Me@29
|
733 shutDownPr = VMS__create_procr( &endOSThreadFn, NULL );
|
|
nengel@193
|
734 shutDownPr->isShutdownVP = TRUE;
|
|
Me@55
|
735 writeVMSQ( shutDownPr, _VMSMasterEnv->readyToAnimateQs[coreIdx] );
|
|
Me@8
|
736 }
|
|
Nina@109
|
737 #ifdef MEAS__PERF_COUNTERS
|
|
Nina@109
|
738 uint64 tmpc,tmpi;
|
|
Nina@109
|
739 saveCyclesAndInstrs(0,tmpc,tmpi);
|
|
Nina@130
|
740 printf("End: cycles = %llu, instrs = %llu\n",tmpc,tmpi);
|
|
Nina@109
|
741 prctl(PR_TASK_PERF_EVENTS_DISABLE);
|
|
Nina@109
|
742 /*
|
|
Nina@109
|
743 for( coreIdx=0; coreIdx < NUM_CORES; coreIdx++ ){
|
|
Nina@109
|
744 close(_VMSMasterEnv->cycles_counter_fd[coreIdx]);
|
|
Nina@109
|
745 close(_VMSMasterEnv->instrs_counter_fd[coreIdx]);
|
|
Nina@109
|
746 }
|
|
Nina@109
|
747 */
|
|
Nina@109
|
748 #endif
|
|
Me@12
|
749 }
|
|
Me@12
|
750
|
|
Me@12
|
751
|
|
Me@29
|
752 /*Am trying to be cute, avoiding IF statement in coreLoop that checks for
|
|
Me@29
|
753 * a special shutdown procr. Ended up with extra-complex shutdown sequence.
|
|
Me@29
|
754 *This function has the sole purpose of setting the stack and framePtr
|
|
Me@29
|
755 * to the coreLoop's stack and framePtr.. it does that then jumps to the
|
|
Me@29
|
756 * core loop's shutdown point -- might be able to just call Pthread_exit
|
|
Me@30
|
757 * from here, but am going back to the pthread's stack and setting everything
|
|
Me@29
|
758 * up just as if it never jumped out, before calling pthread_exit.
|
|
Me@29
|
759 *The end-point of core loop will free the stack and so forth of the
|
|
Me@29
|
760 * processor that animates this function, (this fn is transfering the
|
|
Me@29
|
761 * animator of the AppVP that is in turn animating this function over
|
|
Me@29
|
762 * to core loop function -- note that this slices out a level of virtual
|
|
Me@29
|
763 * processors).
|
|
Me@29
|
764 */
|
|
Me@29
|
765 void
|
|
Me@29
|
766 endOSThreadFn( void *initData, VirtProcr *animatingPr )
|
|
msach@71
|
767 {
|
|
msach@75
|
768 #ifdef SEQUENTIAL
|
|
msach@75
|
769 asmTerminateCoreLoopSeq(animatingPr);
|
|
msach@75
|
770 #else
|
|
msach@71
|
771 asmTerminateCoreLoop(animatingPr);
|
|
msach@75
|
772 #endif
|
|
Me@30
|
773 }
|
|
Me@29
|
774
|
|
Me@29
|
775
|
|
Me@53
|
776 /*This is called from the startup & shutdown
|
|
Me@24
|
777 */
|
|
Me@24
|
778 void
|
|
Me@53
|
779 VMS__cleanup_at_end_of_shutdown()
|
|
Me@31
|
780 {
|
|
msach@78
|
781 //unused
|
|
msach@78
|
782 //VMSQueueStruc **readyToAnimateQs;
|
|
msach@78
|
783 //int coreIdx;
|
|
msach@78
|
784 //VirtProcr **masterVPs;
|
|
msach@78
|
785 //SchedSlot ***allSchedSlots; //ptr to array of ptrs
|
|
Me@31
|
786
|
|
Me@65
|
787 //Before getting rid of everything, print out any measurements made
|
|
Nina@109
|
788 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&printHist );
|
|
Nina@109
|
789 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, (DynArrayFnPtr)&saveHistToFile);
|
|
nengel@182
|
790 //forAllInDynArrayDo( _VMSMasterEnv->measHistsInfo, &freeHist );
|
|
Nina@167
|
791
|
|
nengel@177
|
792
|
|
Me@65
|
793 #ifdef MEAS__TIME_PLUGIN
|
|
Me@68
|
794 printHist( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
msach@84
|
795 saveHistToFile( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
796 printHist( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
msach@79
|
797 saveHistToFile( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@68
|
798 freeHistExt( _VMSMasterEnv->reqHdlrLowTimeHist );
|
|
Me@68
|
799 freeHistExt( _VMSMasterEnv->reqHdlrHighTimeHist );
|
|
Me@65
|
800 #endif
|
|
Me@65
|
801 #ifdef MEAS__TIME_MALLOC
|
|
Me@65
|
802 printHist( _VMSMasterEnv->mallocTimeHist );
|
|
msach@79
|
803 saveHistToFile( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
804 printHist( _VMSMasterEnv->freeTimeHist );
|
|
msach@79
|
805 saveHistToFile( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
806 freeHistExt( _VMSMasterEnv->mallocTimeHist );
|
|
Me@65
|
807 freeHistExt( _VMSMasterEnv->freeTimeHist );
|
|
Me@65
|
808 #endif
|
|
Me@65
|
809 #ifdef MEAS__TIME_MASTER_LOCK
|
|
Me@65
|
810 printHist( _VMSMasterEnv->masterLockLowTimeHist );
|
|
Me@65
|
811 printHist( _VMSMasterEnv->masterLockHighTimeHist );
|
|
Me@65
|
812 #endif
|
|
Me@65
|
813 #ifdef MEAS__TIME_MASTER
|
|
Me@65
|
814 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
815 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
816 {
|
|
Me@65
|
817 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
818 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
819 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
820
|
|
Me@65
|
821 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
822 }
|
|
Me@65
|
823 #endif
|
|
Me@65
|
824 #ifdef MEAS__TIME_STAMP_SUSP
|
|
Me@65
|
825 printHist( _VMSMasterEnv->pluginTimeHist );
|
|
Me@65
|
826 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@65
|
827 {
|
|
Me@65
|
828 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@65
|
829 //master VPs were created external to VMS, so use external free
|
|
Me@65
|
830 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@65
|
831
|
|
Me@65
|
832 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@65
|
833 }
|
|
Me@65
|
834 #endif
|
|
Me@65
|
835
|
|
Me@53
|
836 //All the environment data has been allocated with VMS__malloc, so just
|
|
Me@53
|
837 // free its internal big-chunk and all inside it disappear.
|
|
Me@53
|
838 /*
|
|
Me@31
|
839 readyToAnimateQs = _VMSMasterEnv->readyToAnimateQs;
|
|
Me@31
|
840 masterVPs = _VMSMasterEnv->masterVPs;
|
|
Me@31
|
841 allSchedSlots = _VMSMasterEnv->allSchedSlots;
|
|
Me@31
|
842
|
|
Me@31
|
843 for( coreIdx = 0; coreIdx < NUM_CORES; coreIdx++ )
|
|
Me@24
|
844 {
|
|
Me@55
|
845 freeVMSQ( readyToAnimateQs[ coreIdx ] );
|
|
Me@50
|
846 //master VPs were created external to VMS, so use external free
|
|
Me@53
|
847 VMS__dissipate_procr( masterVPs[ coreIdx ] );
|
|
Me@31
|
848
|
|
Me@31
|
849 freeSchedSlots( allSchedSlots[ coreIdx ] );
|
|
Me@24
|
850 }
|
|
Me@31
|
851
|
|
Me@53
|
852 VMS__free( _VMSMasterEnv->readyToAnimateQs );
|
|
Me@53
|
853 VMS__free( _VMSMasterEnv->masterVPs );
|
|
Me@53
|
854 VMS__free( _VMSMasterEnv->allSchedSlots );
|
|
Me@50
|
855
|
|
Me@50
|
856 //============================= MEASUREMENT STUFF ========================
|
|
Me@50
|
857 #ifdef STATS__TURN_ON_PROBES
|
|
Me@53
|
858 freeDynArrayDeep( _VMSMasterEnv->dynIntervalProbesInfo, &VMS__free_probe);
|
|
Me@50
|
859 #endif
|
|
Me@50
|
860 //========================================================================
|
|
Me@53
|
861 */
|
|
Me@53
|
862 //These are the only two that use system free
|
|
Me@53
|
863 VMS_ext__free_free_list( _VMSMasterEnv->freeListHead );
|
|
Me@53
|
864 free( (void *)_VMSMasterEnv );
|
|
Me@24
|
865 }
|
|
Me@24
|
866
|
|
Me@54
|
867
|
|
Me@54
|
868 //================================
|
|
Me@54
|
869
|
|
Me@54
|
870
|
|
Me@54
|
871 /*Later, improve this -- for now, just exits the application after printing
|
|
Me@54
|
872 * the error message.
|
|
Me@54
|
873 */
|
|
Me@54
|
874 void
|
|
Me@54
|
875 VMS__throw_exception( char *msgStr, VirtProcr *reqstPr, VMSExcp *excpData )
|
|
Me@54
|
876 {
|
|
msach@69
|
877 printf("%s",msgStr);
|
|
Me@54
|
878 fflush(stdin);
|
|
Me@54
|
879 exit(1);
|
|
Me@54
|
880 }
|
|
Me@54
|
881
|
