Exemple #1
0
// Rewrites the dispatch tables into machine code offsets.
static void patchdispatch(jitcompiler *jc) {
  upb_inttable_iter i;
  upb_inttable_begin(&i, &jc->group->methods);
  for (; !upb_inttable_done(&i); upb_inttable_next(&i)) {
    upb_pbdecodermethod *method = upb_value_getptr(upb_inttable_iter_value(&i));
    method->is_native_ = true;

    upb_inttable *dispatch = &method->dispatch;
    upb_inttable_iter i2;
    upb_inttable_begin(&i2, dispatch);
    for (; !upb_inttable_done(&i2); upb_inttable_next(&i2)) {
      uintptr_t key = upb_inttable_iter_key(&i2);
      if (key == 0) continue;
      uint64_t val = upb_value_getuint64(upb_inttable_iter_value(&i2));
      uint64_t newval;
      if (key <= UPB_MAX_FIELDNUMBER) {
        // Primary slot.
        uint64_t oldofs = val >> 16;
        uint64_t newofs = dispatchofs(jc, method, oldofs);
        newval = (val & 0xffff) | (newofs << 16);
        assert((int64_t)newval > 0);
      } else {
        // Secondary slot.  Since we have 64 bits for the value, we use an
        // absolute offset.
        newval = (uint64_t)(jc->group->jit_code + nativeofs(jc, method, val));
      }
      bool ok = upb_inttable_replace(dispatch, key, upb_value_uint64(newval));
      UPB_ASSERT_VAR(ok, ok);
    }
Exemple #2
0
// Populates the given UPB_CTYPE_INT32 inttable with counts of ref2's that
// originate from the given owner.
static void getref2s(const upb_refcounted *owner, upb_inttable *tab) {
  upb_lock();
  upb_inttable_iter i;
  upb_inttable_begin(&i, owner->ref2s);
  for(; !upb_inttable_done(&i); upb_inttable_next(&i)) {
    upb_refcounted *to = (upb_refcounted*)upb_inttable_iter_key(&i);

    // To get the count we need to look in the target's table.
    upb_value v;
    bool found = upb_inttable_lookupptr(to->refs, owner, &v);
    assert(found);
    trackedref *ref = upb_value_getptr(v);
    upb_value count = upb_value_int32(ref->count);

    bool ok = upb_inttable_insertptr(tab, to, count);
    CHECK_OOM(ok);
  }
  upb_unlock();
}