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comparison VMS.c @ 41:cf3e9238aeb0

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Measure suspend and master times works -- refactored
author Me
date Sat, 11 Sep 2010 04:40:12 -0700
parents 1df8d7f2c9b1
children 72373405c816 8f7141a9272e
comparison
equal deleted inserted replaced
17:765ef4a5f6ed 18:aa82127c7e20
125 //Just allocate a massive chunk of memory and roll own malloc/free and 125 //Just allocate a massive chunk of memory and roll own malloc/free and
126 // make app use VMS__malloc_to, which will suspend and perform malloc 126 // make app use VMS__malloc_to, which will suspend and perform malloc
127 // in the master, taking from this massive chunk. 127 // in the master, taking from this massive chunk.
128 128
129 // initFreeList(); 129 // initFreeList();
130
131 //============================= MEASUREMENT STUFF ========================
132 #ifdef MEAS__TIME_STAMP_SUSP
133 //RDTSC may run out of order, and so measure a time-span different
134 // from the desired time-span -- got some weird changes in suspend
135 // hist when added Master hist
136 _VMSMasterEnv->measSuspHist = makeHistogram( 25, 110, 1300 );
137 #endif
138
139 #ifdef MEAS__TIME_MASTER
140 _VMSMasterEnv->measMasterHist = makeHistogram( 25, 500, 800 );
141 #endif
142 //========================================================================
143 130
144 } 131 }
145 132
146 /* 133 /*
147 void 134 void
369 /* outputs */ : "=g" (stackPtrAddr), "=g" (framePtrAddr) \ 356 /* outputs */ : "=g" (stackPtrAddr), "=g" (framePtrAddr) \
370 /* inputs */ : \ 357 /* inputs */ : \
371 /* clobber */ : "%eax" \ 358 /* clobber */ : "%eax" \
372 ); 359 );
373 360
361 //=========================== Measurement stuff ========================
374 #ifdef MEAS__TIME_STAMP_SUSP 362 #ifdef MEAS__TIME_STAMP_SUSP
375 //record time stamp: compare to time-stamp recorded below, at resume 363 //record time stamp: compare to time-stamp recorded below
376 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow ); 364 saveLowTimeStampCountInto( animatingPr->preSuspTSCLow );
377 #endif 365 #endif
366 //=======================================================================
378 367
379 //restore coreloop's frame ptr, then jump back to "start" of core loop 368 //restore coreloop's frame ptr, then jump back to "start" of core loop
380 //Note, GCC compiles to assembly that saves esp and ebp in the stack 369 //Note, GCC compiles to assembly that saves esp and ebp in the stack
381 // frame -- so have to explicitly do assembly that saves to memory 370 // frame -- so have to explicitly do assembly that saves to memory
382 asm volatile("movl %0, %%eax; \ 371 asm volatile("movl %0, %%eax; \
390 // live vars that are in regs on stack before this 379 // live vars that are in regs on stack before this
391 // assembly, so that stack pointer is correct, before jmp 380 // assembly, so that stack pointer is correct, before jmp
392 381
393 ResumePt: 382 ResumePt:
394 #ifdef MEAS__TIME_STAMP_SUSP 383 #ifdef MEAS__TIME_STAMP_SUSP
384 //NOTE: only take low part of count -- do sanity check when take diff
395 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow ); 385 saveLowTimeStampCountInto( animatingPr->postSuspTSCLow );
396 //Take difference between the pre-suspend and post-suspend times
397 // and do sanity check to see if rollover happened between
398 int diff = animatingPr->postSuspTSCLow - animatingPr->preSuspTSCLow;
399 if( diff > 1000000 ) diff = 0;
400 addToHist( diff, _VMSMasterEnv->measSuspHist );
401
402 #endif 386 #endif
403 387
404 return; 388 return;
405 } 389 }
406 390