Sergei G / JobScheduler

job scheduler works with run once and run periodic schedules. Stop logic is not fully thought through.

Dependencies:   LinkedList

Dependents:   JobSchedulerDemo Borsch

scheduler.cpp@5:d8f69ac330f2, 2017-07-11 (annotated)

Committer:
sgnezdov
Date:
Tue Jul 11 22:35:33 2017 +0000
Revision:
5:d8f69ac330f2
Parent:
4:78bcd5a675e1
Child:
6:5baa0e4ec500
fixing job running bugs

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sgnezdov 0:806403f3d0d1 1 #include "scheduler.h"
sgnezdov 0:806403f3d0d1 2
sgnezdov 3:f08f55827736 3 Timeout WakeOnce;
sgnezdov 3:f08f55827736 4
sgnezdov 0:806403f3d0d1 5 void update(void *target) {
sgnezdov 0:806403f3d0d1 6 };
sgnezdov 0:806403f3d0d1 7
sgnezdov 0:806403f3d0d1 8 namespace JobScheduler {
sgnezdov 1:ec6a1d054065 9
sgnezdov 3:f08f55827736 10 const ActionType JobAddAT(1);
sgnezdov 3:f08f55827736 11 const ActionType JobRunAT(3);
sgnezdov 3:f08f55827736 12
sgnezdov 2:9bf5366ad5a2 13 bool descendingTimeline(Appointment *a1, Appointment *a2)
sgnezdov 2:9bf5366ad5a2 14 {
sgnezdov 2:9bf5366ad5a2 15 bool rv = a1->GetTime() <= a2->GetTime();
sgnezdov 2:9bf5366ad5a2 16 //printf("(%d %d:%d)", *d1, *d2, rv);
sgnezdov 2:9bf5366ad5a2 17 return rv;
sgnezdov 2:9bf5366ad5a2 18 };
sgnezdov 3:f08f55827736 19
sgnezdov 2:9bf5366ad5a2 20 /**
sgnezdov 2:9bf5366ad5a2 21 JobAddReq adds new job to the scheduler.
sgnezdov 2:9bf5366ad5a2 22 */
sgnezdov 1:ec6a1d054065 23 struct JobAddReq: Action {
sgnezdov 2:9bf5366ad5a2 24 Appointment *apt;
sgnezdov 1:ec6a1d054065 25 Response<JobID> response;
sgnezdov 2:9bf5366ad5a2 26 JobAddReq(Appointment *a) : Action(JobAddAT), apt(a), response(NoError, 0) {}
sgnezdov 1:ec6a1d054065 27 };
sgnezdov 0:806403f3d0d1 28
sgnezdov 3:f08f55827736 29 struct JobRunReq: Action {
sgnezdov 3:f08f55827736 30 JobRunReq() : Action(JobRunAT) {}
sgnezdov 3:f08f55827736 31 };
sgnezdov 5:d8f69ac330f2 32
sgnezdov 0:806403f3d0d1 33 Scheduler::Scheduler(JobService *jobService)
sgnezdov 2:9bf5366ad5a2 34 : _jobService(jobService), _nextJobID(1) { }
sgnezdov 0:806403f3d0d1 35
sgnezdov 0:806403f3d0d1 36 void Scheduler::updateAdapter(void *thisPointer) {
sgnezdov 0:806403f3d0d1 37 Scheduler *self = static_cast<Scheduler*>(thisPointer);
sgnezdov 0:806403f3d0d1 38 self->updateHandler();
sgnezdov 0:806403f3d0d1 39 }
sgnezdov 4:78bcd5a675e1 40
sgnezdov 4:78bcd5a675e1 41 void Scheduler::runAdapter(void *thisPointer) {
sgnezdov 4:78bcd5a675e1 42 Scheduler *self = static_cast<Scheduler*>(thisPointer);
sgnezdov 4:78bcd5a675e1 43 self->runHandler();
sgnezdov 4:78bcd5a675e1 44 }
sgnezdov 0:806403f3d0d1 45
sgnezdov 0:806403f3d0d1 46 void Scheduler::Start() {
sgnezdov 0:806403f3d0d1 47 _updater.start(callback(Scheduler::updateAdapter, this));
sgnezdov 4:78bcd5a675e1 48 _runner.start(callback(Scheduler::runAdapter, this));
sgnezdov 0:806403f3d0d1 49 }
sgnezdov 0:806403f3d0d1 50
sgnezdov 0:806403f3d0d1 51 void Scheduler::Stop() {
sgnezdov 0:806403f3d0d1 52 // it is not thread-safe, but impact is non-existent.
sgnezdov 0:806403f3d0d1 53 _quit = true;
sgnezdov 0:806403f3d0d1 54 }
sgnezdov 0:806403f3d0d1 55
sgnezdov 0:806403f3d0d1 56 void Scheduler::WaitToStop() {
sgnezdov 0:806403f3d0d1 57 _updater.join();
sgnezdov 4:78bcd5a675e1 58 _runner.join();
sgnezdov 0:806403f3d0d1 59 }
sgnezdov 0:806403f3d0d1 60
sgnezdov 2:9bf5366ad5a2 61 Response<JobID> Scheduler::JobAdd(JobTypeID jobTID, ISchedule *schedule, IJobData *data) {
sgnezdov 2:9bf5366ad5a2 62 Appointment *apt = new Appointment(jobTID, schedule, data, time_t(0));
sgnezdov 2:9bf5366ad5a2 63 if (NULL == apt) {
sgnezdov 2:9bf5366ad5a2 64 printf("[Scheduler::JobAdd] failed to allocate appointment\n");
sgnezdov 2:9bf5366ad5a2 65 return Response<JobID>(1, 0);
sgnezdov 2:9bf5366ad5a2 66 }
sgnezdov 5:d8f69ac330f2 67 return this->reschedule(apt);
sgnezdov 5:d8f69ac330f2 68 }
sgnezdov 5:d8f69ac330f2 69
sgnezdov 5:d8f69ac330f2 70 Response<JobID> Scheduler::reschedule(Appointment *apt) {
sgnezdov 2:9bf5366ad5a2 71 JobAddReq req(apt);
sgnezdov 5:d8f69ac330f2 72 printf("[Scheduler::reschedule] put\n");
sgnezdov 4:78bcd5a675e1 73 _updates.put(&req);
sgnezdov 5:d8f69ac330f2 74 printf("[Scheduler::reschedule] get\n");
sgnezdov 0:806403f3d0d1 75 // default is wait forever
sgnezdov 1:ec6a1d054065 76 osEvent evt = req.resQueue.get();
sgnezdov 0:806403f3d0d1 77 if (evt.status == osEventMessage) {
sgnezdov 2:9bf5366ad5a2 78 if (evt.value.p != NULL) {
sgnezdov 5:d8f69ac330f2 79 printf("[Scheduler::reschedule] completed ok\n");
sgnezdov 2:9bf5366ad5a2 80 } else {
sgnezdov 5:d8f69ac330f2 81 printf("[Scheduler::reschedule] NOT added (C1)\n");
sgnezdov 2:9bf5366ad5a2 82 }
sgnezdov 2:9bf5366ad5a2 83 } else {
sgnezdov 2:9bf5366ad5a2 84 // not sure what condition is
sgnezdov 5:d8f69ac330f2 85 printf("[Scheduler::reschedule] NOT added (C2)\n");
sgnezdov 2:9bf5366ad5a2 86 delete apt;
sgnezdov 2:9bf5366ad5a2 87 apt = NULL;
sgnezdov 0:806403f3d0d1 88 }
sgnezdov 2:9bf5366ad5a2 89 // yes, return a copy of the structure
sgnezdov 5:d8f69ac330f2 90 return req.response;
sgnezdov 0:806403f3d0d1 91 }
sgnezdov 0:806403f3d0d1 92
sgnezdov 2:9bf5366ad5a2 93 void Scheduler::JobRemove(JobID jobID) {
sgnezdov 0:806403f3d0d1 94 }
sgnezdov 3:f08f55827736 95
sgnezdov 3:f08f55827736 96 static JobRunReq jobRunReq;
sgnezdov 3:f08f55827736 97 void Scheduler::onWakeOnce()
sgnezdov 3:f08f55827736 98 {
sgnezdov 4:78bcd5a675e1 99 _updates.put(&jobRunReq);
sgnezdov 3:f08f55827736 100 }
sgnezdov 0:806403f3d0d1 101
sgnezdov 0:806403f3d0d1 102 void Scheduler::updateHandler() {
sgnezdov 0:806403f3d0d1 103 while (!_quit) {
sgnezdov 0:806403f3d0d1 104 printf("[Scheduler::updateHandler] waiting for action\n");
sgnezdov 0:806403f3d0d1 105 // wait forever ...
sgnezdov 4:78bcd5a675e1 106 osEvent evt = _updates.get();
sgnezdov 0:806403f3d0d1 107 if (evt.status == osEventMessage) {
sgnezdov 0:806403f3d0d1 108 printf("[Scheduler::updateHandler] process action\n");
sgnezdov 0:806403f3d0d1 109 this->process((Action*)evt.value.p);
sgnezdov 0:806403f3d0d1 110 } else {
sgnezdov 0:806403f3d0d1 111 printf("[Scheduler::updateHandler] NOT osEventMessage\n");
sgnezdov 0:806403f3d0d1 112 }
sgnezdov 0:806403f3d0d1 113 }
sgnezdov 0:806403f3d0d1 114 }
sgnezdov 3:f08f55827736 115
sgnezdov 0:806403f3d0d1 116 void Scheduler::process(Action *action)
sgnezdov 0:806403f3d0d1 117 {
sgnezdov 3:f08f55827736 118 time_t now = time(NULL); // now in seconds
sgnezdov 1:ec6a1d054065 119 switch(action->type) {
sgnezdov 1:ec6a1d054065 120 case JobAddAT: {
sgnezdov 5:d8f69ac330f2 121 printf("[Scheduler::process] JobAddAT\n");
sgnezdov 1:ec6a1d054065 122 JobAddReq *req = static_cast<JobAddReq*>(action);
sgnezdov 2:9bf5366ad5a2 123 Job *job = req->apt->GetJob();
sgnezdov 2:9bf5366ad5a2 124 if (job->GetID() == 0) {
sgnezdov 2:9bf5366ad5a2 125 // assign job its ID
sgnezdov 2:9bf5366ad5a2 126 job->Init(_nextJobID++);
sgnezdov 2:9bf5366ad5a2 127 }
sgnezdov 3:f08f55827736 128 // set next appointment time
sgnezdov 3:f08f55827736 129 req->apt->SetTime(job->GetSchedule()->NextRunTime(now));
sgnezdov 2:9bf5366ad5a2 130 node<Appointment> *tmp = _timeline.insertOrdered(req->apt, descendingTimeline);
sgnezdov 2:9bf5366ad5a2 131 if (NULL == tmp) {
sgnezdov 2:9bf5366ad5a2 132 printf("[Scheduler::process] timeline insert failed\n");
sgnezdov 2:9bf5366ad5a2 133 action->resQueue.put(NULL);
sgnezdov 3:f08f55827736 134 // internal state has not changed
sgnezdov 2:9bf5366ad5a2 135 return;
sgnezdov 2:9bf5366ad5a2 136 }
sgnezdov 3:f08f55827736 137 req->response.data = job->GetID();
sgnezdov 2:9bf5366ad5a2 138 //printf("[Scheduler::process] simulate error\n");
sgnezdov 2:9bf5366ad5a2 139 //action->resQueue.put(NULL);
sgnezdov 1:ec6a1d054065 140 action->resQueue.put(&req->response);
sgnezdov 1:ec6a1d054065 141 break;
sgnezdov 1:ec6a1d054065 142 }
sgnezdov 3:f08f55827736 143 case JobRunAT: {
sgnezdov 5:d8f69ac330f2 144 printf("[Scheduler::process] JobRunAT\n");
sgnezdov 3:f08f55827736 145 // execute job run logic after switch
sgnezdov 3:f08f55827736 146 break;
sgnezdov 3:f08f55827736 147 }
sgnezdov 1:ec6a1d054065 148 default:
sgnezdov 1:ec6a1d054065 149 printf("[Scheduler::process] unknown action type\n");
sgnezdov 1:ec6a1d054065 150 action->resQueue.put(NULL);
sgnezdov 1:ec6a1d054065 151 }
sgnezdov 3:f08f55827736 152 node<Appointment> *wakeNode = _timeline.pop(1);
sgnezdov 3:f08f55827736 153 Appointment *wakeApt = wakeNode->data;
sgnezdov 3:f08f55827736 154 Job* wakeJob = wakeApt->GetJob();
sgnezdov 5:d8f69ac330f2 155 if (now < wakeApt->GetTime()) {
sgnezdov 3:f08f55827736 156 // request wake up
sgnezdov 5:d8f69ac330f2 157 time_t sleepTime = wakeApt->GetTime() - now;
sgnezdov 3:f08f55827736 158 printf("[Scheduler::process] job %d wake up in %d seconds\n", wakeJob->GetID(), sleepTime);
sgnezdov 3:f08f55827736 159 WakeOnce.attach(callback(this, &Scheduler::onWakeOnce), sleepTime);
sgnezdov 3:f08f55827736 160 } else {
sgnezdov 3:f08f55827736 161 // process job
sgnezdov 5:d8f69ac330f2 162 printf("[Scheduler::process] job ID %d ready to run\n", wakeJob->GetID());
sgnezdov 3:f08f55827736 163 _timeline.remove(1);
sgnezdov 4:78bcd5a675e1 164 _runs.put(wakeApt);
sgnezdov 3:f08f55827736 165 }
sgnezdov 4:78bcd5a675e1 166 }
sgnezdov 4:78bcd5a675e1 167
sgnezdov 4:78bcd5a675e1 168 void Scheduler::runHandler() {
sgnezdov 4:78bcd5a675e1 169 while (!_quit) {
sgnezdov 4:78bcd5a675e1 170 printf("[Scheduler::runHandler] waiting for action\n");
sgnezdov 4:78bcd5a675e1 171 // wait forever ...
sgnezdov 4:78bcd5a675e1 172 osEvent evt = _runs.get();
sgnezdov 4:78bcd5a675e1 173 if (evt.status == osEventMessage) {
sgnezdov 4:78bcd5a675e1 174 printf("[Scheduler::runHandler] run action\n");
sgnezdov 4:78bcd5a675e1 175 Appointment *apt = (Appointment*)evt.value.p;
sgnezdov 5:d8f69ac330f2 176 Job *job = apt->GetJob();
sgnezdov 5:d8f69ac330f2 177 jobFunc *f = _jobService->GetJob(job->GetTypeID());
sgnezdov 5:d8f69ac330f2 178 if (f == NULL) {
sgnezdov 5:d8f69ac330f2 179 printf("[Scheduler::runHandler] NO FUNC for job type id %d\n", job->GetTypeID());
sgnezdov 5:d8f69ac330f2 180 // NO reschedule
sgnezdov 5:d8f69ac330f2 181 delete apt;
sgnezdov 5:d8f69ac330f2 182 continue;
sgnezdov 5:d8f69ac330f2 183 }
sgnezdov 5:d8f69ac330f2 184 printf("Job Started\n");
sgnezdov 5:d8f69ac330f2 185 f();
sgnezdov 5:d8f69ac330f2 186 printf("Job Finished\n");
sgnezdov 5:d8f69ac330f2 187 this->reschedule(apt);
sgnezdov 4:78bcd5a675e1 188 } else {
sgnezdov 4:78bcd5a675e1 189 printf("[Scheduler::runHandler] NOT osEventMessage\n");
sgnezdov 4:78bcd5a675e1 190 }
sgnezdov 4:78bcd5a675e1 191 }
sgnezdov 4:78bcd5a675e1 192 }
sgnezdov 3:f08f55827736 193
sgnezdov 0:806403f3d0d1 194
sgnezdov 0:806403f3d0d1 195 }