Robust/src/Runtime/bamboo/pmc_garbage.c

   1 #include "multicoregc.h"
   2 #include "multicoreruntime.h"
   3 #include "pmc_garbage.h"
   4 #include "runtime_arch.h"
   5
   6 struct pmc_heap * pmc_heapptr;
   7 struct pmc_queue * pmc_localqueue;
   8 volatile bool gcflag;
   9
  10 void incrementthreads() {
  11   tmc_spin_mutex_lock(&pmc_heapptr->lock);
  12   pmc_heapptr->numthreads++;
  13   tmc_spin_mutex_unlock(&pmc_heapptr->lock);
  14 }
  15
  16 void decrementthreads() {
  17   tmc_spin_mutex_lock(&pmc_heapptr->lock);
  18   pmc_heapptr->numthreads--;
  19   tmc_spin_mutex_unlock(&pmc_heapptr->lock);
  20 }
  21
  22 void * pmc_unitend(unsigned int index) {
  23   return gcbaseva+(index+1)*NUMPMCUNITS;
  24 }
  25
  26 void pmc_onceInit() {
  27   pmc_localqueue=&pmc_heapptr->regions[BAMBOO_NUM_OF_CORE].markqueue;
  28   pmc_queueinit(pmc_localqueue);
  29   tmc_spin_barrier_init(&pmc_heapptr->barrier, NUMCORES4GC);
  30   for(int i=0;i<NUMPMCUNITS;i++) {
  31     pmc_heapptr->units[i].endptr=pmc_unitend(i);
  32   }
  33 }
  34
  35 void pmc_init() {
  36   if (BAMBOO_NUM_OF_CORE==STARTUPCORE) {
  37     pmc_heapptr->numthreads=NUMCORES4GC;
  38   }
  39   tmc_spin_barrier_wait(&pmc_heapptr->barrier);
  40 }
  41
  42 void gc(struct garbagelist *gl) {
  43   pmc_init();
  44   //mark live objects
  45   pmc_mark(gl);
  46   //count live objects per unit
  47   pmc_count();
  48   tmc_spin_barrier_wait(&pmc_heapptr->barrier);
  49   //divide up work
  50   if (BAMBOO_NUM_OF_CORE==STARTUPCORE) {
  51     pmc_processunits();
  52   }
  53   tmc_spin_barrier_wait(&pmc_heapptr->barrier);
  54   //set up forwarding pointers
  55   pmc_doforward();
  56   tmc_spin_barrier_wait(&pmc_heapptr->barrier);
  57   //update pointers
  58   pmc_doreferenceupdate();
  59   tmc_spin_barrier_wait(&pmc_heapptr->barrier);
  60   //compact data
  61   pmc_docompact();
  62   tmc_spin_barrier_wait(&pmc_heapptr->barrier);
  63 }
  64
  65 void gettype_size(void * ptr, int * ttype, unsigned int * tsize) {
  66   int type = ((int *)ptr)[0];
  67   if(type < NUMCLASSES) {
  68     // a normal object
  69     *tsize = classsize[type];
  70     *ttype = type;
  71   } else {
  72     // an array
  73     struct ArrayObject *ao=(struct ArrayObject *)ptr;
  74     unsigned int elementsize=classsize[type];
  75     unsigned int length=ao->___length___;
  76     *tsize = sizeof(struct ArrayObject)+length*elementsize;
  77     *ttype = type;
  78   }
  79 }