Ejemplos de AsioSession::getCurrentWaitHandleDepth en C++ (Cpp)

Ejemplo n.º 1

Archivo: continuation_wait_handle.cpp Proyecto: gilshwartz/hiphop-php

void c_ContinuationWaitHandle::Create(c_Continuation* continuation) {
  assert(continuation);
  assert(continuation->m_waitHandle.isNull());

  AsioSession* session = AsioSession::Get();
  uint16_t depth = session->getCurrentWaitHandleDepth();
  if (UNLIKELY(depth >= MAX_DEPTH)) {
    Object e(SystemLib::AllocInvalidOperationExceptionObject(
        "Asio stack overflow"));
    throw e;
  }

  if (UNLIKELY(continuation->started())) {
    Object e(SystemLib::AllocInvalidOperationExceptionObject(
      continuation->running()
      ? "Encountered an attempt to start currently running continuation"
      : "Encountered an attempt to start tainted continuation"));
    throw e;
  }

  continuation->m_waitHandle = NEWOBJ(c_ContinuationWaitHandle)();
  continuation->m_waitHandle->initialize(continuation, depth + 1);

  // needs to be called after continuation->m_waitHandle is set
  if (UNLIKELY(session->hasOnContinuationCreateCallback())) {
    session->onContinuationCreate(continuation->m_waitHandle.get());
  }
}

Ejemplo n.º 2

Archivo: async_function_wait_handle.cpp Proyecto: nkhuyu/hhvm

void c_AsyncFunctionWaitHandle::Create(c_Continuation* continuation) {
  assert(continuation);
  assert(continuation->m_label > 0);
  assert(continuation->m_waitHandle.isNull());

  AsioSession* session = AsioSession::Get();
  uint16_t depth = session->getCurrentWaitHandleDepth();
  if (UNLIKELY(depth >= MAX_DEPTH)) {
    Object e(SystemLib::AllocInvalidOperationExceptionObject(
        "Asio stack overflow"));
    throw e;
  }

  Cell* value = tvAssertCell(continuation->m_value.asTypedValue());
  assert(dynamic_cast<c_WaitableWaitHandle*>(c_WaitHandle::fromCell(value)));
  auto child = static_cast<c_WaitableWaitHandle*>(value->m_data.pobj);
  assert(!child->isFinished());

  // import child into the current context, detect cross-context cycles
  if (session->isInContext()) {
    child->enterContext(session->getCurrentContextIdx());
  }

  continuation->m_waitHandle = NEWOBJ(c_AsyncFunctionWaitHandle)();
  continuation->m_waitHandle->initialize(continuation, child, depth + 1);

  // needs to be called after continuation->m_waitHandle is set
  if (UNLIKELY(session->hasOnAsyncFunctionCreateCallback())) {
    session->onAsyncFunctionCreate(continuation->m_waitHandle.get());
  }
}

Ejemplo n.º 3

Archivo: continuation_wait_handle.cpp Proyecto: ChrisOHu/hiphop-php

Object c_ContinuationWaitHandle::ti_start(const char* cls, CObjRef continuation) {
  AsioSession* session = AsioSession::Get();
  if (UNLIKELY(!continuation.instanceof(SystemLib::s_ContinuationClass))) {
    Object e(SystemLib::AllocInvalidArgumentExceptionObject(
        "Expected continuation to be an instance of Continuation"));
    throw e;
  }

  uint16_t depth = session->getCurrentWaitHandleDepth();
  if (UNLIKELY(depth >= MAX_DEPTH)) {
    Object e(SystemLib::AllocInvalidOperationExceptionObject(
        "Asio stack overflow"));
    throw e;
  }

  c_Continuation* cont = static_cast<c_Continuation*>(continuation.get());
  if (!cont->m_waitHandle.isNull()) {
    if (session->isInContext()) {
      // throws if cross-context cycle found
      cont->m_waitHandle->enterContext(session->getCurrentContextIdx());
    }
    return cont->m_waitHandle;
  }

  if (UNLIKELY(cont->m_index != -1)) {
    assert(cont->m_running);
    Object e(SystemLib::AllocInvalidOperationExceptionObject(
        "Encountered an attempt to start currently running continuation"));
    throw e;
  }

  p_ContinuationWaitHandle wh = NEWOBJ(c_ContinuationWaitHandle)();
  wh->start(cont, depth + 1);
  if (UNLIKELY(session->hasOnStartedCallback())) {
    session->onStarted(wh);
  }
  return wh;
}