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- /*
- * Copyright [2021] JD.com, Inc.
- *
- * Licensed 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.
- *
- */
- #ifndef __H_WATCHDOG_UNIT_H__
- #define __H_WATCHDOG_UNIT_H__
- #include <stdlib.h>
- #include <string.h>
- #include <map>
- class WatchDogUnit;
- class WatchDogObject
- {
- protected:
- friend class WatchDogUnit;
- WatchDogUnit *watchdog_object_owner_;
- int watchdog_object_pid_;
- char watchdog_object_name_[16];
- public:
- WatchDogObject(void) : watchdog_object_owner_(NULL), watchdog_object_pid_(0) { watchdog_object_name_[0] = '0'; }
- WatchDogObject(WatchDogUnit *u) : watchdog_object_owner_(u), watchdog_object_pid_(0) { watchdog_object_name_[0] = '0'; }
- WatchDogObject(WatchDogUnit *u, const char *n) : watchdog_object_owner_(u), watchdog_object_pid_(0)
- {
- strncpy(watchdog_object_name_, n, sizeof(watchdog_object_name_));
- }
- WatchDogObject(WatchDogUnit *u, const char *n, int i) : watchdog_object_owner_(u), watchdog_object_pid_(i)
- {
- strncpy(watchdog_object_name_, n, sizeof(watchdog_object_name_));
- }
- virtual ~WatchDogObject();
- virtual void exited_notify(int retval);
- virtual void killed_notify(int signo, int coredumped);
- const char *Name() const { return watchdog_object_name_; }
- int get_watchdog_pid() const { return watchdog_object_pid_; }
- int attach_watch_dog(WatchDogUnit *o = 0);
- void report_kill_alarm(int signo, int coredumped);
- };
- class WatchDogUnit
- {
- private:
- friend class WatchDogObject;
- typedef std::map<int, WatchDogObject *> pidmap_t;
- int pid_count_;
- pidmap_t pid_map_watchdog_object_;
- private:
- int attach_process(WatchDogObject *);
- public:
- WatchDogUnit();
- virtual ~WatchDogUnit();
- /* return #pid monitored */
- int check_watchdog();
- int kill_allwatchdog();
- int force_kill_allwatchdog();
- int get_process_count() const { return pid_count_; }
- };
- #endif
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