C++ (Cpp) unlink_free_heap_page Examples

Example #1

File: gc.c Project: anehing/mruby

struct RBasic*
mrb_obj_alloc(mrb_state *mrb, enum mrb_vtype ttype, struct RClass *cls)
{
  struct RBasic *p;
  static const RVALUE RVALUE_zero = { { { MRB_TT_FALSE } } };

#ifdef MRB_GC_STRESS
  mrb_full_gc(mrb);
#endif
  if (mrb->gc_threshold < mrb->live) {
    mrb_incremental_gc(mrb);
  }
  if (mrb->free_heaps == NULL) {
    add_heap(mrb);
  }

  p = mrb->free_heaps->freelist;
  mrb->free_heaps->freelist = ((struct free_obj*)p)->next;
  if (mrb->free_heaps->freelist == NULL) {
    unlink_free_heap_page(mrb, mrb->free_heaps);
  }

  mrb->live++;
  gc_protect(mrb, p);
  *(RVALUE *)p = RVALUE_zero;
  p->tt = ttype;
  p->c = cls;
  paint_partial_white(mrb, p);
  return p;
}

Example #2

File: gc.c Project: guanqun/mruby

struct RBasic*
mrb_obj_alloc(mrb_state *mrb, enum mrb_vtype ttype, struct RClass *cls)
{
  struct RBasic *p;

#ifdef MRB_GC_STRESS
  mrb_garbage_collect(mrb);
#endif
  if (mrb->gc_threshold < mrb->live) {
    mrb_incremental_gc(mrb);
  }
  if (mrb->free_heaps == NULL) {
    add_heap(mrb);
  }

  p = mrb->free_heaps->freelist;
  mrb->free_heaps->freelist = ((struct free_obj*)p)->next;
  if (mrb->free_heaps->freelist == NULL) {
    unlink_free_heap_page(mrb, mrb->free_heaps);
  }

  mrb->live++;
  gc_protect(mrb, p);
  memset(p, 0, sizeof(RVALUE));
  p->tt = ttype;
  p->c = cls;
  paint_partial_white(mrb, p);
  return p;
}

Example #3

File: gc.c Project: Zyxwvu/mruby

struct RBasic*
mrb_obj_alloc(mrb_state *mrb, enum mrb_vtype ttype, struct RClass *cls)
{
  struct RBasic *p;

  if (mrb->gc_threshold < mrb->live) {
    mrb_incremental_gc(mrb);
  }
  if (mrb->free_heaps == NULL) {
    add_heap(mrb);
  }

  p = mrb->free_heaps->freelist;
  mrb->free_heaps->freelist = ((struct free_obj*)p)->next;
  if (mrb->free_heaps->freelist == NULL) {
    unlink_free_heap_page(mrb, mrb->free_heaps);
  }

  mrb->live++;
  mrb->arena[mrb->arena_idx++] = p;
  memset(p, 0, sizeof(RVALUE));
  if (mrb->arena_idx >= MRB_ARENA_SIZE) {
    /* arena overflow error */
    mrb_raise(mrb, E_TYPE_ERROR, "arena overflow error");
  }
  p->tt = ttype;
  p->c = cls;
  paint_partial_white(mrb, p);
  return p;
}

Example #4

File: gc.c Project: Everysick/mruby

MRB_API struct RBasic*
mrb_obj_alloc(mrb_state *mrb, enum mrb_vtype ttype, struct RClass *cls)
{
  struct RBasic *p;
  static const RVALUE RVALUE_zero = { { { MRB_TT_FALSE } } };
  mrb_gc *gc = &mrb->gc;

  if (cls) {
    enum mrb_vtype tt;

    switch (cls->tt) {
    case MRB_TT_CLASS:
    case MRB_TT_SCLASS:
    case MRB_TT_MODULE:
    case MRB_TT_ENV:
      break;
    default:
      mrb_raise(mrb, E_TYPE_ERROR, "allocation failure");
    }
    tt = MRB_INSTANCE_TT(cls);
    if (tt != MRB_TT_FALSE &&
        ttype != MRB_TT_SCLASS &&
        ttype != MRB_TT_ICLASS &&
        ttype != MRB_TT_ENV &&
        ttype != tt) {
      mrb_raisef(mrb, E_TYPE_ERROR, "allocation failure of %S", mrb_obj_value(cls));
    }
  }

#ifdef MRB_GC_STRESS
  mrb_full_gc(mrb);
#endif
  if (gc->threshold < gc->live) {
    mrb_incremental_gc(mrb);
  }
  if (gc->free_heaps == NULL) {
    add_heap(mrb, gc);
  }

  p = gc->free_heaps->freelist;
  gc->free_heaps->freelist = ((struct free_obj*)p)->next;
  if (gc->free_heaps->freelist == NULL) {
    unlink_free_heap_page(gc, gc->free_heaps);
  }

  gc->live++;
  gc_protect(mrb, gc, p);
  *(RVALUE *)p = RVALUE_zero;
  p->tt = ttype;
  p->c = cls;
  paint_partial_white(gc, p);
  return p;
}

Example #5

File: gc.c Project: AndreOF/ArangoDB

static size_t
incremental_sweep_phase(mrb_state *mrb, size_t limit)
{
  struct heap_page *page = mrb->sweeps;
  size_t tried_sweep = 0;

  while (page && (tried_sweep < limit)) {
    RVALUE *p = page->objects;
    RVALUE *e = p + MRB_HEAP_PAGE_SIZE;
    size_t freed = 0;
    int dead_slot = 1;
    int full = (page->freelist == NULL);

    while (p<e) {
      if (is_dead(mrb, &p->as.basic)) {
        if (p->as.basic.tt != MRB_TT_FREE) {
          obj_free(mrb, &p->as.basic);
          p->as.free.next = page->freelist;
          page->freelist = (struct RBasic*)p;
          freed++;
        }
      }
      else {
        paint_partial_white(mrb, &p->as.basic); /* next gc target */
        dead_slot = 0;
      }
      p++;
    }

    /* free dead slot */
    if (dead_slot && freed < MRB_HEAP_PAGE_SIZE) {
      struct heap_page *next = page->next;

      unlink_heap_page(mrb, page);
      unlink_free_heap_page(mrb, page);
      mrb_free(mrb, page);
      page = next;
    }
    else {
      if (full && freed > 0) {
        link_free_heap_page(mrb, page);
      }
      page = page->next;
    }
    tried_sweep += MRB_HEAP_PAGE_SIZE;
    mrb->live -= freed;
    mrb->gc_live_after_mark -= freed;
  }
  mrb->sweeps = page;
  return tried_sweep;
}

Example #6

File: gc.c Project: anehing/mruby

static size_t
incremental_sweep_phase(mrb_state *mrb, size_t limit)
{
  struct heap_page *page = mrb->sweeps;
  size_t tried_sweep = 0;

  while (page && (tried_sweep < limit)) {
    RVALUE *p = page->objects;
    RVALUE *e = p + MRB_HEAP_PAGE_SIZE;
    size_t freed = 0;
    mrb_bool dead_slot = TRUE;
    int full = (page->freelist == NULL);

    if (is_minor_gc(mrb) && page->old) {
      /* skip a slot which doesn't contain any young object */
      p = e;
      dead_slot = FALSE;
    }
    while (p<e) {
      if (is_dead(mrb, &p->as.basic)) {
        if (p->as.basic.tt != MRB_TT_FREE) {
          obj_free(mrb, &p->as.basic);
          p->as.free.next = page->freelist;
          page->freelist = (struct RBasic*)p;
          freed++;
        }
      }
      else {
        if (!is_generational(mrb))
          paint_partial_white(mrb, &p->as.basic); /* next gc target */
        dead_slot = 0;
      }
      p++;
    }

    /* free dead slot */
    if (dead_slot && freed < MRB_HEAP_PAGE_SIZE) {
      struct heap_page *next = page->next;

      unlink_heap_page(mrb, page);
      unlink_free_heap_page(mrb, page);
      mrb_free(mrb, page);
      page = next;
    }
    else {
      if (full && freed > 0) {
        link_free_heap_page(mrb, page);
      }
      if (page->freelist == NULL && is_minor_gc(mrb))
        page->old = TRUE;
      else
        page->old = FALSE;
      page = page->next;
    }
    tried_sweep += MRB_HEAP_PAGE_SIZE;
    mrb->live -= freed;
    mrb->gc_live_after_mark -= freed;
  }
  mrb->sweeps = page;
  return tried_sweep;
}