0915487329
By passing strings instead of const char pointers to the task control functions, we can safely make copies of them knowing that the contents won't disappear.
95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) 2018 MariaDB Corporation Ab
|
|
*
|
|
* Use of this software is governed by the Business Source License included
|
|
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
|
|
*
|
|
* Change Date: 2022-01-01
|
|
*
|
|
* On the date above, in accordance with the Business Source License, use
|
|
* of this software will be governed by version 2 or later of the General
|
|
* Public License.
|
|
*/
|
|
#pragma once
|
|
|
|
#include <maxscale/ccdefs.hh>
|
|
|
|
#include <maxbase/worker.hh>
|
|
#include <maxscale/housekeeper.h>
|
|
|
|
namespace maxscale
|
|
{
|
|
|
|
class MainWorker : public mxb::Worker
|
|
{
|
|
MainWorker(const MainWorker&) = delete;
|
|
MainWorker& operator=(const MainWorker&) = delete;
|
|
|
|
public:
|
|
/**
|
|
* Construct the main worker.
|
|
*
|
|
* @note There can be exactly one instance of @c MainWorker.
|
|
*/
|
|
MainWorker();
|
|
|
|
~MainWorker();
|
|
|
|
/**
|
|
* Does the main worker exist. It is only at startup and shutdown that this
|
|
* function may return false. When MaxScale is running normally, it will
|
|
* always return true.
|
|
*
|
|
* @return True, if the main worker has been created, false otherwise.
|
|
*/
|
|
static bool created();
|
|
|
|
/**
|
|
* Returns the main worker.
|
|
*
|
|
* @return The main worker.
|
|
*/
|
|
static MainWorker& get();
|
|
|
|
void add_task(const std::string& name, TASKFN func, void* pData, int frequency);
|
|
void remove_task(const std::string& name);
|
|
|
|
void show_tasks(DCB* pDcb) const;
|
|
json_t* tasks_to_json(const char* zhost) const;
|
|
|
|
static int64_t ticks();
|
|
|
|
private:
|
|
bool pre_run() override;
|
|
void post_run() override;
|
|
void epoll_tick() override;
|
|
|
|
struct Task
|
|
{
|
|
public:
|
|
Task(const char* zName, TASKFN func, void* pData, int frequency)
|
|
: name(zName)
|
|
, func(func)
|
|
, pData(pData)
|
|
, frequency(frequency)
|
|
, nextdue(time(0) + frequency)
|
|
, id(0)
|
|
{
|
|
};
|
|
|
|
std::string name;
|
|
TASKFN func;
|
|
void* pData;
|
|
int frequency;
|
|
time_t nextdue;
|
|
uint32_t id;
|
|
};
|
|
|
|
bool call_task(Worker::Call::action_t action, Task* pTask);
|
|
static bool inc_ticks(Worker::Call::action_t action);
|
|
|
|
std::map<std::string, Task> m_tasks_by_name;
|
|
};
|
|
|
|
}
|