Ejemplo n.º 1
0
MIterCtx::~MIterCtx() {
    m_mArray->~MutableArrayIter();
    smart_free(m_mArray);
    tvRefcountedDecRef(&m_key);
    tvRefcountedDecRef(&m_val);
    if (m_ref) decRefRef(const_cast<RefData*>(m_ref));
}
Ejemplo n.º 2
0
MIterCtx::~MIterCtx() {
  m_mArray->~MutableArrayIter();
  smart_free(m_mArray);
  tvRefcountedDecRef(&m_key);
  tvRefcountedDecRef(&m_val);
  if (m_ref && m_ref->decRefCount() == 0) {
    const_cast<RefData*>(m_ref)->release();
  }
}
Ejemplo n.º 3
0
c_Continuation::~c_Continuation() {
  tvRefcountedDecRef(m_key);
  tvRefcountedDecRef(m_value);

  // Free locals, but don't trigger the EventHook for FunctionExit
  // since the continuation function has already been exited. We
  // don't want redundant calls.
  ActRec* ar = actRec();
  frame_free_locals_inl_no_hook<false>(ar, ar->m_func->numLocals());
}
Ejemplo n.º 4
0
Generator::~Generator() {
  if (LIKELY(getState() == State::Done)) {
    return;
  }

  assert(getState() != State::Running);
  tvRefcountedDecRef(m_key);
  tvRefcountedDecRef(m_value);

  // Free locals, but don't trigger the EventHook for FunctionReturn since
  // the generator has already been exited. We don't want redundant calls.
  ActRec* ar = actRec();
  frame_free_locals_inl_no_hook<false>(ar, ar->func()->numLocals());
}
Ejemplo n.º 5
0
c_Generator::~c_Generator() {
  if (LIKELY(getState() == Done)) {
    return;
  }

  tvRefcountedDecRef(m_key);
  tvRefcountedDecRef(m_value);

  // Free locals, but don't trigger the EventHook for FunctionReturn
  // since the generator has already been exited. We
  // don't want redundant calls.
  ActRec* ar = actRec();
  frame_free_locals_inl_no_hook<false>(ar, ar->m_func->numLocals());
}
Ejemplo n.º 6
0
void nativeDataInstanceDtor(ObjectData* obj, const Class* cls) {
  assert(!cls->preClass()->builtinObjSize());
  assert(!cls->preClass()->builtinODOffset());
  obj->~ObjectData();

  auto const nProps = size_t{cls->numDeclProperties()};
  auto prop = reinterpret_cast<TypedValue*>(obj + 1);
  auto const stop = prop + nProps;
  for (; prop != stop; ++prop) {
    tvRefcountedDecRef(prop);
  }

  auto ndi = cls->getNativeDataInfo();
  assert(ndi);
  if (ndi->destroy) {
    ndi->destroy(obj);
  }
  if (ndi->sweep) {
    removeSweepNode(getSweepNode(obj));
  }

  size_t nativeDataSize = alignTypedValue(ndi->sz + sizeof(SweepNode));
  size_t size = ObjectData::sizeForNProps(nProps) + nativeDataSize;
  void *ptr = obj;
  ptr = static_cast<char*>(ptr) - nativeDataSize;

  if (LIKELY(size <= kMaxSmartSize)) {
    return MM().smartFreeSizeLogged(ptr, size);
  }
  MM().smartFreeSizeBigLogged(ptr, size);
}
Ejemplo n.º 7
0
ALWAYS_INLINE
void BaseMap::setImpl(StringData* key, const TypedValue* val) {
  if (!raw) {
    mutate();
  }
  assert(val->m_type != KindOfRef);
  assert(canMutateBuffer());
retry:
  strhash_t h = key->hash();
  auto* p = findForInsert(key, h);
  assert(p);
  if (validPos(*p)) {
    auto& e = data()[*p];
    TypedValue old = e.data;
    cellDup(*val, e.data);
    tvRefcountedDecRef(old);
    return;
  }
  if (UNLIKELY(isFull())) {
    makeRoom();
    goto retry;
  }
  if (!raw) {
    ++m_version;
  }
  auto& e = allocElm(p);
  cellDup(*val, e.data);
  e.setStrKey(key, h);
  updateIntLikeStrKeys(key);
}
Ejemplo n.º 8
0
ALWAYS_INLINE
void BaseMap::setImpl(int64_t h, const TypedValue* val) {
  if (!raw) {
    mutate();
  }
  assert(val->m_type != KindOfRef);
  assert(canMutateBuffer());
retry:
  auto p = findForInsert(h);
  assert(p);
  if (validPos(*p)) {
    auto& e = data()[*p];
    TypedValue old = e.data;
    cellDup(*val, e.data);
    tvRefcountedDecRef(old);
    return;
  }
  if (UNLIKELY(isFull())) {
    makeRoom();
    goto retry;
  }
  if (!raw) {
    ++m_version;
  }
  auto& e = allocElm(p);
  cellDup(*val, e.data);
  e.setIntKey(h);
  updateNextKI(h);
}
Ejemplo n.º 9
0
void trimExtraArgs(ActRec* ar) {
  assert(!ar->hasInvName());

  sync_regstate_to_caller(ar);
  const Func* f = ar->m_func;
  int numParams = f->numParams();
  int numArgs = ar->numArgs();
  assert(numArgs > numParams);
  int numExtra = numArgs - numParams;

  TRACE(1, "trimExtraArgs: %d args, function %s takes only %d, ar %p\n",
        numArgs, f->name()->data(), numParams, ar);

  if (f->attrs() & AttrMayUseVV) {
    assert(!ar->hasExtraArgs());
    ar->setExtraArgs(ExtraArgs::allocateCopy(
      (TypedValue*)(uintptr_t(ar) - numArgs * sizeof(TypedValue)),
      numArgs - numParams));
  } else {
    // Function is not marked as "MayUseVV", so discard the extra arguments
    TypedValue* tv = (TypedValue*)(uintptr_t(ar) - numArgs*sizeof(TypedValue));
    for (int i = 0; i < numExtra; ++i) {
      tvRefcountedDecRef(tv);
      ++tv;
    }
    ar->setNumArgs(numParams);
  }

  // Only go back to dirty in a non-exception case.  (Same reason as
  // above.)
  tl_regState = VMRegState::DIRTY;
}
Ejemplo n.º 10
0
void chainFaultObjects(ObjectData* top, ObjectData* prev) {
  static const StaticString nProp("previous");
  bool visible, accessible, unset;
  while (true) {
    TypedValue* top_tv = top->getProp(
      SystemLib::s_ExceptionClass,
      nProp.get(),
      visible, accessible, unset
    );
    assert(visible && accessible && !unset);
    if (top_tv->m_type != KindOfObject ||
        !top_tv->m_data.pobj->instanceof(
                                SystemLib::s_ExceptionClass)) {
      // Since we are overwriting, decref.
      tvRefcountedDecRef(top_tv);
      // Objects held in m_faults are not refcounted, therefore
      // we need to increase the ref count here.
      top_tv->m_type = KindOfObject;
      top_tv->m_data.pobj = prev;
      prev->incRefCount();
      break;
    }
    top = top_tv->m_data.pobj;
  }
}
Ejemplo n.º 11
0
BaseVector::~BaseVector() {
  for (uint i = 0; i < m_size; ++i) {
    tvRefcountedDecRef(&m_data[i]);
  }

  freeData();
}
Ejemplo n.º 12
0
int shuffleArgsForMagicCall(ActRec* ar) {
  if (!ar->hasInvName()) {
    return 0;
  }
  const Func* f UNUSED = ar->m_func;
  f->validate();
  assert(f->name()->isame(s_call.get())
         || f->name()->isame(s_callStatic.get()));
  assert(f->numParams() == 2);
  assert(ar->hasInvName());
  StringData* invName = ar->getInvName();
  assert(invName);
  ar->setVarEnv(nullptr);
  int nargs = ar->numArgs();

  // We need to make an array containing all the arguments passed by the
  // caller and put it where the second argument is
  PackedArrayInit aInit(nargs);
  for (int i = 0; i < nargs; ++i) {
    auto const tv = reinterpret_cast<TypedValue*>(
      uintptr_t(ar) - (i+1) * sizeof(TypedValue)
    );
    aInit.append(tvAsCVarRef(tv));
    tvRefcountedDecRef(tv);
  }

  // Put invName in the slot for first argument
  setArgInActRec(ar, 0, uint64_t(invName), KindOfString);
  // Put argArray in the slot for second argument
  auto const argArray = aInit.toArray().detach();
  setArgInActRec(ar, 1, uint64_t(argArray), KindOfArray);
  // Fix up ActRec's numArgs
  ar->initNumArgs(2);
  return 1;
}
Ejemplo n.º 13
0
bool objOffsetIsset(TypedValue& tvRef, ObjectData* base, const Variant& offset,
                    bool validate /* = true */) {
  auto exists = objOffsetExists(base, offset);

  // Unless we called ArrayObject::offsetExists, there's nothing more to do
  if (exists != OffsetExistsResult::IssetIfNonNull) {
    return (int)exists;
  }

  // For ArrayObject::offsetExists, we need to check the value at `offset`.
  // If it's null, then we return false.
  TypedValue tvResult;
  tvWriteUninit(&tvResult);

  // We can't call the offsetGet method on `base` because users aren't
  // expecting offsetGet to be called for `isset(...)` expressions, so call
  // the method on the base ArrayObject class.
  auto const method =
    SystemLib::s_ArrayObjectClass->lookupMethod(s_offsetGet.get());
  assert(method != nullptr);
  g_context->invokeFuncFew(&tvResult, method, base, nullptr, 1,
                           offset.asCell());
  auto const result = !IS_NULL_TYPE(tvResult.m_type);
  tvRefcountedDecRef(&tvResult);
  return result;
}
Ejemplo n.º 14
0
void BaseVector::mapwithkey(BaseVector* bvec, CVarRef callback) {
  CallCtx ctx;
  vm_decode_function(callback, nullptr, false, ctx);
  if (!ctx.func) {
    Object e(SystemLib::AllocInvalidArgumentExceptionObject(
      "Parameter must be a valid callback"));
    throw e;
  }
  uint sz = m_size;
  bvec->reserve(sz);
  for (uint i = 0; i < sz; ++i) {
    TypedValue* tv = &bvec->m_data[i];
    int32_t version = m_version;
    TypedValue args[2] = {
      make_tv<KindOfInt64>(i),
      m_data[i]
    };
    g_vmContext->invokeFuncFew(tv, ctx, 2, args);
    if (UNLIKELY(version != m_version)) {
      tvRefcountedDecRef(tv);
      throw_collection_modified();
    }
    ++bvec->m_size;
  }
}
Ejemplo n.º 15
0
void EventHook::onFunctionReturn(ActRec* ar, TypedValue retval) {
  // The locals are already gone. Null out everything.
  ar->setThisOrClassAllowNull(nullptr);
  ar->setLocalsDecRefd();
  ar->setVarEnv(nullptr);

  try {
    ssize_t flags = CheckSurprise();
    onFunctionExit(ar, &retval, nullptr, flags);

    // Async profiler
    if ((flags & AsyncEventHookFlag) &&
        ar->func()->isAsyncFunction() && ar->resumed()) {
      auto session = AsioSession::Get();
      // Return @ resumed execution => AsyncFunctionWaitHandle succeeded.
      if (session->hasOnResumableSuccessCallback()) {
        auto afwh = frame_afwh(ar);
        session->onResumableSuccess(afwh, cellAsCVarRef(retval));
      }
    }
  } catch (...) {
    /*
     * We're responsible for freeing the return value if we exit with an
     * exception.  See irgen-ret.
     */
    tvRefcountedDecRef(retval);
    throw;
  }
}
Ejemplo n.º 16
0
void chainFaultObjects(ObjectData* top, ObjectData* prev) {
  while (true) {
    auto const lookup = top->getProp(
      top->instanceof(SystemLib::s_ExceptionClass)
        ? SystemLib::s_ExceptionClass
        : SystemLib::s_ErrorClass,
      s_previous.get()
    );
    auto const top_tv = lookup.prop;
    assert(top_tv != nullptr);

    assert(top_tv->m_type != KindOfUninit && lookup.accessible);
    if (top_tv->m_type != KindOfObject ||
        !top_tv->m_data.pobj->instanceof(SystemLib::s_ThrowableClass)) {
      // Since we are overwriting, decref.
      tvRefcountedDecRef(top_tv);
      // Objects held in m_faults are not refcounted, therefore we need to
      // increase the ref count here.
      top_tv->m_type = KindOfObject;
      top_tv->m_data.pobj = prev;
      prev->incRefCount();
      break;
    }
    top = top_tv->m_data.pobj;
  }
}
Ejemplo n.º 17
0
void nativeDataInstanceDtor(ObjectData* obj, const Class* cls) {
  assert(!cls->preClass()->builtinObjSize());
  assert(!cls->preClass()->builtinODOffset());
  obj->~ObjectData();

  auto const nProps = size_t{cls->numDeclProperties()};
  auto prop = reinterpret_cast<TypedValue*>(obj + 1);
  auto const stop = prop + nProps;
  for (; prop != stop; ++prop) {
    tvRefcountedDecRef(prop);
  }

  auto ndi = cls->getNativeDataInfo();
  if (ndi->destroy) {
    ndi->destroy(obj);
  }
  auto node = getNativeNode(obj, ndi);
  if (ndi->sweep) {
    MM().removeNativeObject(node);
  }

  size_t size = ObjectData::sizeForNProps(nProps) + ndsize(obj, ndi);
  if (LIKELY(size <= kMaxSmallSize)) {
    return MM().freeSmallSize(node, size);
  }
  MM().freeBigSize(node, size);
}
Ejemplo n.º 18
0
c_GenericContinuation::~c_GenericContinuation() {
  if (hhvm && m_locals != NULL) {
    for (int i = 0; i < m_nLocals; ++i) {
      tvRefcountedDecRef(&m_locals[i]);
    }
  }
  c_GenericContinuation::sweep();
}
Ejemplo n.º 19
0
void objOffsetUnset(ObjectData* base, const Variant& offset) {
  objArrayAccess(base);
  assert(!base->isCollection());
  const Func* method = base->methodNamed(s_offsetUnset.get());
  assert(method != nullptr);
  TypedValue tv;
  tvWriteUninit(&tv);
  g_context->invokeFuncFew(&tv, method, base, nullptr, 1, offset.asCell());
  tvRefcountedDecRef(&tv);
}
Ejemplo n.º 20
0
ALWAYS_INLINE APCLocalArray::~APCLocalArray() {
  if (m_localCache) {
    for (TypedValue* tv = m_localCache, *end = tv + m_arr->capacity();
         tv < end; ++tv) {
      tvRefcountedDecRef(tv);
    }
    smart_free(m_localCache);
  }
  m_arr->getHandle()->unreference();
}
Ejemplo n.º 21
0
/*
 * Cold path helper for AddNewElemC delegates to the ArrayData::append
 * virtual method.
 */
static NEVER_INLINE
ArrayData* genericAddNewElemC(ArrayData* a, TypedValue value) {
  ArrayData* r = a->append(tvAsCVarRef(&value), a->getCount() != 1);
  if (UNLIKELY(r != a)) {
    r->incRefCount();
    decRefArr(a);
  }
  tvRefcountedDecRef(value);
  return r;
}
Ejemplo n.º 22
0
ALWAYS_INLINE SharedMap::~SharedMap() {
  if (m_localCache) {
    for (TypedValue* tv = m_localCache, *end = tv + m_arr->arrCap();
         tv < end; ++tv) {
      tvRefcountedDecRef(tv);
    }
    smart_free(m_localCache);
  }
  m_arr->decRef();
}
Ejemplo n.º 23
0
ObjectData* colAddNewElemCHelper(ObjectData* coll, TypedValue value) {
  if (coll->isCollection()) {
    collectionInitAppend(coll, &value);
    // decref the value as the collection helper incref'ed it
    tvRefcountedDecRef(&value);
  } else {
    raise_error("ColAddNewElemC: $2 must be a collection");
  }
  return coll;
}
Ejemplo n.º 24
0
HOT_FUNC
SharedMap::~SharedMap() {
  if (m_localCache) {
    for (TypedValue* tv = m_localCache, *end = tv + size();
         tv < end; ++tv) {
      tvRefcountedDecRef(tv);
    }
    smart_free(m_localCache);
  }
}
Ejemplo n.º 25
0
/**
 * Delegate the responsibility for freeing the buffer to the
 * frozen copy, if it exists.
 */
BaseVector::~BaseVector() {
  if (m_frozenCopy.isNull() && m_data) {
    for (uint i = 0; i < m_size; ++i) {
      tvRefcountedDecRef(&m_data[i]);
    }

    smart_free(m_data);
    m_data = nullptr;
  }
}
Ejemplo n.º 26
0
ALWAYS_INLINE
TypedValue& getDefaultIfNullCell(TypedValue* tv, TypedValue& def) {
  if (UNLIKELY(nullptr == tv)) {
    // refcount is already correct since def was never decrefed
    return def;
  }
  tvRefcountedDecRef(&def);
  TypedValue* ret = tvToCell(tv);
  tvRefcountedIncRef(ret);
  return *ret;
}
Ejemplo n.º 27
0
AutoloadHandler::Result AutoloadHandler::loadFromMap(const String& name,
                                                     const String& kind,
                                                     bool toLower,
                                                     const T &checkExists) {
  assert(!m_map.isNull());
  while (true) {
    const Variant& type_map = m_map.get()->get(kind);
    auto const typeMapCell = type_map.asCell();
    if (typeMapCell->m_type != KindOfArray) return Failure;
    String canonicalName = toLower ? f_strtolower(name) : name;
    const Variant& file = typeMapCell->m_data.parr->get(canonicalName);
    bool ok = false;
    if (file.isString()) {
      String fName = file.toCStrRef().get();
      if (fName.get()->data()[0] != '/') {
        if (!m_map_root.empty()) {
          fName = m_map_root + fName;
        }
      }
      try {
        JIT::VMRegAnchor _;
        bool initial;
        auto const ec = g_context.getNoCheck();
        Unit* u = ec->evalInclude(fName.get(), nullptr, &initial);
        if (u) {
          if (initial) {
            TypedValue retval;
            ec->invokeFunc(&retval, u->getMain(), init_null_variant,
                           nullptr, nullptr, nullptr, nullptr,
                           ExecutionContext::InvokePseudoMain);
            tvRefcountedDecRef(&retval);
          }
          ok = true;
        }
      } catch (...) {}
    }
    if (ok && checkExists(name)) {
      return Success;
    }
    const Variant& func = m_map.get()->get(s_failure);
    if (func.isNull()) return Failure;
    // can throw, otherwise
    //  - true means the map was updated. try again
    //  - false means we should stop applying autoloaders (only affects classes)
    //  - anything else means keep going
    Variant action = vm_call_user_func(func, make_packed_array(kind, name));
    auto const actionCell = action.asCell();
    if (actionCell->m_type == KindOfBoolean) {
      if (actionCell->m_data.num) continue;
      return StopAutoloading;
    }
    return ContinueAutoloading;
  }
}
Ejemplo n.º 28
0
void objOffsetUnset(ObjectData* base, CVarRef offset) {
  objArrayAccess(base);
  static StringData* sd__offsetUnset
    = StringData::GetStaticString("offsetUnset");
  assert(!base->isCollection());
  const Func* method = base->methodNamed(sd__offsetUnset);
  assert(method != nullptr);
  TypedValue tv;
  tvWriteUninit(&tv);
  base->invokeUserMethod(&tv, method, CREATE_VECTOR1(offset));
  tvRefcountedDecRef(&tv);
}
Ejemplo n.º 29
0
NameValueTable::~NameValueTable() {
  if (leaked()) return;
  for (Elm* elm = &m_table[m_tabMask]; elm != &m_table[-1]; --elm) {
    if (elm->m_name) {
      decRefStr(const_cast<StringData*>(elm->m_name));
      if (elm->m_tv.m_type != kNamedLocalDataType) {
        tvRefcountedDecRef(elm->m_tv);
      }
    }
  }
  req::free(m_table);
}
Ejemplo n.º 30
0
ALWAYS_INLINE
APCLocalArray::~APCLocalArray() {
  if (m_localCache) {
    for (TypedValue* tv = m_localCache, *end = tv + m_arr->capacity();
         tv < end; ++tv) {
      tvRefcountedDecRef(tv);
    }
    req::free(m_localCache);
  }
  m_arr->unreference();
  MM().removeApcArray(this);
}