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