59 lines
2.4 KiB
C++
59 lines
2.4 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing,
|
|
// software distributed under the License is distributed on an
|
|
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the License for the
|
|
// specific language governing permissions and limitations
|
|
// under the License.
|
|
|
|
#pragma once
|
|
|
|
#include <memory>
|
|
|
|
namespace doris {
|
|
|
|
// This class act as a super class of all context like things such as
|
|
// plan fragment executor or pipelinefragmentcontext or pipelinexfragmentcontext
|
|
class TaskExecutionContext : public std::enable_shared_from_this<TaskExecutionContext> {
|
|
public:
|
|
TaskExecutionContext() = default;
|
|
virtual ~TaskExecutionContext() = default;
|
|
};
|
|
|
|
using TaskExecutionContextSPtr = std::shared_ptr<TaskExecutionContext>;
|
|
|
|
// Task Execution Context maybe plan fragment executor or pipelinefragmentcontext or pipelinexfragmentcontext
|
|
// In multi thread scenario, the object is created in main thread (such as FragmentExecThread), but the object
|
|
// maybe used in other thread(such as scanner thread, brpc->sender queue). If the main thread stopped and destroy
|
|
// the object, then the other thread may core. So the other thread must lock the context to ensure the object exists.
|
|
struct HasTaskExecutionCtx {
|
|
using Weak = typename TaskExecutionContextSPtr::weak_type;
|
|
|
|
HasTaskExecutionCtx(TaskExecutionContextSPtr task_exec_ctx) : task_exec_ctx_(task_exec_ctx) {}
|
|
|
|
// Init task ctx from state, the state has to own a method named get_task_execution_context()
|
|
// like runtime state
|
|
template <typename T>
|
|
HasTaskExecutionCtx(T* state) : task_exec_ctx_(state->get_task_execution_context()) {}
|
|
|
|
virtual ~HasTaskExecutionCtx() = default;
|
|
|
|
public:
|
|
inline TaskExecutionContextSPtr task_exec_ctx() const { return task_exec_ctx_.lock(); }
|
|
inline Weak weak_task_exec_ctx() const { return task_exec_ctx_; }
|
|
|
|
private:
|
|
Weak task_exec_ctx_;
|
|
};
|
|
|
|
} // namespace doris
|