job scheduler works with run once and run periodic schedules. Stop logic is not fully thought through.
Dependents: JobSchedulerDemo Borsch
scheduler.cpp@13:6be67ee77861, 2017-08-02 (annotated)
- Committer:
- sgnezdov
- Date:
- Wed Aug 02 19:31:28 2017 +0000
- Revision:
- 13:6be67ee77861
- Parent:
- 12:684ddfc57199
- Child:
- 14:a30cc783ae89
added JobList method to be implemented
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
sgnezdov | 0:806403f3d0d1 | 1 | #include "scheduler.h" |
sgnezdov | 0:806403f3d0d1 | 2 | |
sgnezdov | 9:ee21cd055a97 | 3 | #include "mbed-trace/mbed_trace.h" |
sgnezdov | 9:ee21cd055a97 | 4 | #define TRACE_GROUP "schd" |
sgnezdov | 9:ee21cd055a97 | 5 | |
sgnezdov | 3:f08f55827736 | 6 | Timeout WakeOnce; |
sgnezdov | 3:f08f55827736 | 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 | 7:98c8b2eabea3 | 12 | const ActionType JobQuitAT(4); |
sgnezdov | 3:f08f55827736 | 13 | |
sgnezdov | 2:9bf5366ad5a2 | 14 | bool descendingTimeline(Appointment *a1, Appointment *a2) |
sgnezdov | 2:9bf5366ad5a2 | 15 | { |
sgnezdov | 12:684ddfc57199 | 16 | time_t t1 = a1->GetTime(); |
sgnezdov | 12:684ddfc57199 | 17 | time_t t2 = a2->GetTime(); |
sgnezdov | 12:684ddfc57199 | 18 | bool rv = t1 <= t2; |
sgnezdov | 12:684ddfc57199 | 19 | tr_debug("apt %d:%d <= %d:%d is %d)", a1->GetJob()->GetID(), t1, a2->GetJob()->GetID(), t2, rv); |
sgnezdov | 2:9bf5366ad5a2 | 20 | return rv; |
sgnezdov | 2:9bf5366ad5a2 | 21 | }; |
sgnezdov | 3:f08f55827736 | 22 | |
sgnezdov | 2:9bf5366ad5a2 | 23 | /** |
sgnezdov | 2:9bf5366ad5a2 | 24 | JobAddReq adds new job to the scheduler. |
sgnezdov | 2:9bf5366ad5a2 | 25 | */ |
sgnezdov | 1:ec6a1d054065 | 26 | struct JobAddReq: Action { |
sgnezdov | 2:9bf5366ad5a2 | 27 | Appointment *apt; |
sgnezdov | 1:ec6a1d054065 | 28 | Response<JobID> response; |
sgnezdov | 2:9bf5366ad5a2 | 29 | JobAddReq(Appointment *a) : Action(JobAddAT), apt(a), response(NoError, 0) {} |
sgnezdov | 1:ec6a1d054065 | 30 | }; |
sgnezdov | 7:98c8b2eabea3 | 31 | |
sgnezdov | 0:806403f3d0d1 | 32 | Scheduler::Scheduler(JobService *jobService) |
sgnezdov | 7:98c8b2eabea3 | 33 | : _quitUpdater(false), _quitRunner(false), _jobService(jobService), _nextJobID(1) { } |
sgnezdov | 0:806403f3d0d1 | 34 | |
sgnezdov | 0:806403f3d0d1 | 35 | void Scheduler::updateAdapter(void *thisPointer) { |
sgnezdov | 0:806403f3d0d1 | 36 | Scheduler *self = static_cast<Scheduler*>(thisPointer); |
sgnezdov | 0:806403f3d0d1 | 37 | self->updateHandler(); |
sgnezdov | 0:806403f3d0d1 | 38 | } |
sgnezdov | 4:78bcd5a675e1 | 39 | |
sgnezdov | 4:78bcd5a675e1 | 40 | void Scheduler::runAdapter(void *thisPointer) { |
sgnezdov | 4:78bcd5a675e1 | 41 | Scheduler *self = static_cast<Scheduler*>(thisPointer); |
sgnezdov | 4:78bcd5a675e1 | 42 | self->runHandler(); |
sgnezdov | 4:78bcd5a675e1 | 43 | } |
sgnezdov | 0:806403f3d0d1 | 44 | |
sgnezdov | 0:806403f3d0d1 | 45 | void Scheduler::Start() { |
sgnezdov | 0:806403f3d0d1 | 46 | _updater.start(callback(Scheduler::updateAdapter, this)); |
sgnezdov | 4:78bcd5a675e1 | 47 | _runner.start(callback(Scheduler::runAdapter, this)); |
sgnezdov | 0:806403f3d0d1 | 48 | } |
sgnezdov | 0:806403f3d0d1 | 49 | |
sgnezdov | 0:806403f3d0d1 | 50 | void Scheduler::Stop() { |
sgnezdov | 7:98c8b2eabea3 | 51 | _runs.put(NULL); |
sgnezdov | 7:98c8b2eabea3 | 52 | |
sgnezdov | 7:98c8b2eabea3 | 53 | Action uReq = Action(JobQuitAT); |
sgnezdov | 7:98c8b2eabea3 | 54 | _updates.put(&uReq); |
sgnezdov | 7:98c8b2eabea3 | 55 | uReq.resQueue.get(); |
sgnezdov | 0:806403f3d0d1 | 56 | } |
sgnezdov | 7:98c8b2eabea3 | 57 | |
sgnezdov | 0:806403f3d0d1 | 58 | void Scheduler::WaitToStop() { |
sgnezdov | 0:806403f3d0d1 | 59 | _updater.join(); |
sgnezdov | 4:78bcd5a675e1 | 60 | _runner.join(); |
sgnezdov | 0:806403f3d0d1 | 61 | } |
sgnezdov | 0:806403f3d0d1 | 62 | |
sgnezdov | 2:9bf5366ad5a2 | 63 | Response<JobID> Scheduler::JobAdd(JobTypeID jobTID, ISchedule *schedule, IJobData *data) { |
sgnezdov | 2:9bf5366ad5a2 | 64 | Appointment *apt = new Appointment(jobTID, schedule, data, time_t(0)); |
sgnezdov | 2:9bf5366ad5a2 | 65 | if (NULL == apt) { |
sgnezdov | 10:8cff30b5b90d | 66 | tr_error("[JobAdd] failed to allocate appointment"); |
sgnezdov | 2:9bf5366ad5a2 | 67 | return Response<JobID>(1, 0); |
sgnezdov | 2:9bf5366ad5a2 | 68 | } |
sgnezdov | 5:d8f69ac330f2 | 69 | return this->reschedule(apt); |
sgnezdov | 5:d8f69ac330f2 | 70 | } |
sgnezdov | 5:d8f69ac330f2 | 71 | |
sgnezdov | 5:d8f69ac330f2 | 72 | Response<JobID> Scheduler::reschedule(Appointment *apt) { |
sgnezdov | 2:9bf5366ad5a2 | 73 | JobAddReq req(apt); |
sgnezdov | 6:5baa0e4ec500 | 74 | |
sgnezdov | 6:5baa0e4ec500 | 75 | // set next appointment time |
sgnezdov | 6:5baa0e4ec500 | 76 | time_t now = time(NULL); // now in seconds |
sgnezdov | 6:5baa0e4ec500 | 77 | apt->SetTime(apt->GetJob()->GetSchedule()->NextRunTime(now)); |
sgnezdov | 6:5baa0e4ec500 | 78 | if (apt->GetTime() == 0) { |
sgnezdov | 6:5baa0e4ec500 | 79 | // there is no next run time; delete appointment |
sgnezdov | 10:8cff30b5b90d | 80 | tr_debug("[reschedule] NO next appointment"); |
sgnezdov | 6:5baa0e4ec500 | 81 | delete apt; |
sgnezdov | 6:5baa0e4ec500 | 82 | req.response.error = 2; |
sgnezdov | 6:5baa0e4ec500 | 83 | return req.response; |
sgnezdov | 6:5baa0e4ec500 | 84 | } |
sgnezdov | 6:5baa0e4ec500 | 85 | |
sgnezdov | 10:8cff30b5b90d | 86 | tr_debug("[reschedule] put"); |
sgnezdov | 4:78bcd5a675e1 | 87 | _updates.put(&req); |
sgnezdov | 10:8cff30b5b90d | 88 | tr_debug("[reschedule] get"); |
sgnezdov | 0:806403f3d0d1 | 89 | // default is wait forever |
sgnezdov | 1:ec6a1d054065 | 90 | osEvent evt = req.resQueue.get(); |
sgnezdov | 0:806403f3d0d1 | 91 | if (evt.status == osEventMessage) { |
sgnezdov | 2:9bf5366ad5a2 | 92 | if (evt.value.p != NULL) { |
sgnezdov | 10:8cff30b5b90d | 93 | tr_debug("[reschedule] completed ok"); |
sgnezdov | 2:9bf5366ad5a2 | 94 | } else { |
sgnezdov | 10:8cff30b5b90d | 95 | tr_error("[reschedule] NOT added (C1)"); |
sgnezdov | 2:9bf5366ad5a2 | 96 | } |
sgnezdov | 2:9bf5366ad5a2 | 97 | } else { |
sgnezdov | 2:9bf5366ad5a2 | 98 | // not sure what condition is |
sgnezdov | 10:8cff30b5b90d | 99 | tr_error("[reschedule] NOT added (C2)"); |
sgnezdov | 2:9bf5366ad5a2 | 100 | delete apt; |
sgnezdov | 2:9bf5366ad5a2 | 101 | apt = NULL; |
sgnezdov | 0:806403f3d0d1 | 102 | } |
sgnezdov | 2:9bf5366ad5a2 | 103 | // yes, return a copy of the structure |
sgnezdov | 5:d8f69ac330f2 | 104 | return req.response; |
sgnezdov | 0:806403f3d0d1 | 105 | } |
sgnezdov | 0:806403f3d0d1 | 106 | |
sgnezdov | 2:9bf5366ad5a2 | 107 | void Scheduler::JobRemove(JobID jobID) { |
sgnezdov | 13:6be67ee77861 | 108 | tr_error("JobRemove is not implemented"); |
sgnezdov | 13:6be67ee77861 | 109 | } |
sgnezdov | 13:6be67ee77861 | 110 | |
sgnezdov | 13:6be67ee77861 | 111 | LinkedList<Job> Scheduler::JobList() { |
sgnezdov | 13:6be67ee77861 | 112 | tr_error("JobList is not implemented"); |
sgnezdov | 13:6be67ee77861 | 113 | return NULL; |
sgnezdov | 0:806403f3d0d1 | 114 | } |
sgnezdov | 3:f08f55827736 | 115 | |
sgnezdov | 7:98c8b2eabea3 | 116 | static Action jobRunReq(JobRunAT); |
sgnezdov | 3:f08f55827736 | 117 | void Scheduler::onWakeOnce() |
sgnezdov | 3:f08f55827736 | 118 | { |
sgnezdov | 4:78bcd5a675e1 | 119 | _updates.put(&jobRunReq); |
sgnezdov | 3:f08f55827736 | 120 | } |
sgnezdov | 0:806403f3d0d1 | 121 | |
sgnezdov | 0:806403f3d0d1 | 122 | void Scheduler::updateHandler() { |
sgnezdov | 7:98c8b2eabea3 | 123 | while (!_quitUpdater) { |
sgnezdov | 10:8cff30b5b90d | 124 | tr_debug("[updateHandler] waiting for action"); |
sgnezdov | 0:806403f3d0d1 | 125 | // wait forever ... |
sgnezdov | 4:78bcd5a675e1 | 126 | osEvent evt = _updates.get(); |
sgnezdov | 0:806403f3d0d1 | 127 | if (evt.status == osEventMessage) { |
sgnezdov | 10:8cff30b5b90d | 128 | tr_debug("[updateHandler] process action"); |
sgnezdov | 0:806403f3d0d1 | 129 | this->process((Action*)evt.value.p); |
sgnezdov | 0:806403f3d0d1 | 130 | } else { |
sgnezdov | 10:8cff30b5b90d | 131 | tr_error("[updateHandler] NOT osEventMessage"); |
sgnezdov | 0:806403f3d0d1 | 132 | } |
sgnezdov | 0:806403f3d0d1 | 133 | } |
sgnezdov | 0:806403f3d0d1 | 134 | } |
sgnezdov | 3:f08f55827736 | 135 | |
sgnezdov | 0:806403f3d0d1 | 136 | void Scheduler::process(Action *action) |
sgnezdov | 0:806403f3d0d1 | 137 | { |
sgnezdov | 3:f08f55827736 | 138 | time_t now = time(NULL); // now in seconds |
sgnezdov | 1:ec6a1d054065 | 139 | switch(action->type) { |
sgnezdov | 1:ec6a1d054065 | 140 | case JobAddAT: { |
sgnezdov | 10:8cff30b5b90d | 141 | tr_debug("[process] JobAddAT"); |
sgnezdov | 1:ec6a1d054065 | 142 | JobAddReq *req = static_cast<JobAddReq*>(action); |
sgnezdov | 2:9bf5366ad5a2 | 143 | Job *job = req->apt->GetJob(); |
sgnezdov | 2:9bf5366ad5a2 | 144 | if (job->GetID() == 0) { |
sgnezdov | 2:9bf5366ad5a2 | 145 | // assign job its ID |
sgnezdov | 2:9bf5366ad5a2 | 146 | job->Init(_nextJobID++); |
sgnezdov | 12:684ddfc57199 | 147 | tr_debug("assigned new job its id %d", job->GetID()); |
sgnezdov | 12:684ddfc57199 | 148 | } else { |
sgnezdov | 12:684ddfc57199 | 149 | tr_debug("job already has id %d", job->GetID()); |
sgnezdov | 2:9bf5366ad5a2 | 150 | } |
sgnezdov | 2:9bf5366ad5a2 | 151 | node<Appointment> *tmp = _timeline.insertOrdered(req->apt, descendingTimeline); |
sgnezdov | 2:9bf5366ad5a2 | 152 | if (NULL == tmp) { |
sgnezdov | 12:684ddfc57199 | 153 | tr_error("[process] timeline insert failed for job ID %d", job->GetID()); |
sgnezdov | 2:9bf5366ad5a2 | 154 | action->resQueue.put(NULL); |
sgnezdov | 3:f08f55827736 | 155 | // internal state has not changed |
sgnezdov | 2:9bf5366ad5a2 | 156 | return; |
sgnezdov | 2:9bf5366ad5a2 | 157 | } |
sgnezdov | 3:f08f55827736 | 158 | req->response.data = job->GetID(); |
sgnezdov | 10:8cff30b5b90d | 159 | //tr_debug("[process] simulate error"); |
sgnezdov | 2:9bf5366ad5a2 | 160 | //action->resQueue.put(NULL); |
sgnezdov | 1:ec6a1d054065 | 161 | action->resQueue.put(&req->response); |
sgnezdov | 1:ec6a1d054065 | 162 | break; |
sgnezdov | 1:ec6a1d054065 | 163 | } |
sgnezdov | 3:f08f55827736 | 164 | case JobRunAT: { |
sgnezdov | 10:8cff30b5b90d | 165 | tr_debug("[process] JobRunAT"); |
sgnezdov | 3:f08f55827736 | 166 | // execute job run logic after switch |
sgnezdov | 3:f08f55827736 | 167 | break; |
sgnezdov | 3:f08f55827736 | 168 | } |
sgnezdov | 7:98c8b2eabea3 | 169 | case JobQuitAT: { |
sgnezdov | 10:8cff30b5b90d | 170 | tr_debug("[process] JobQuitAT"); |
sgnezdov | 7:98c8b2eabea3 | 171 | action->resQueue.put(NULL); |
sgnezdov | 7:98c8b2eabea3 | 172 | _quitUpdater = true; |
sgnezdov | 7:98c8b2eabea3 | 173 | return; |
sgnezdov | 7:98c8b2eabea3 | 174 | } |
sgnezdov | 1:ec6a1d054065 | 175 | default: |
sgnezdov | 10:8cff30b5b90d | 176 | tr_warn("[process] unknown action type"); |
sgnezdov | 1:ec6a1d054065 | 177 | action->resQueue.put(NULL); |
sgnezdov | 1:ec6a1d054065 | 178 | } |
sgnezdov | 3:f08f55827736 | 179 | node<Appointment> *wakeNode = _timeline.pop(1); |
sgnezdov | 12:684ddfc57199 | 180 | if (wakeNode == NULL) { |
sgnezdov | 12:684ddfc57199 | 181 | tr_debug("[process] found no nodes to run"); |
sgnezdov | 12:684ddfc57199 | 182 | return; |
sgnezdov | 12:684ddfc57199 | 183 | } |
sgnezdov | 3:f08f55827736 | 184 | Appointment *wakeApt = wakeNode->data; |
sgnezdov | 3:f08f55827736 | 185 | Job* wakeJob = wakeApt->GetJob(); |
sgnezdov | 5:d8f69ac330f2 | 186 | if (now < wakeApt->GetTime()) { |
sgnezdov | 3:f08f55827736 | 187 | // request wake up |
sgnezdov | 5:d8f69ac330f2 | 188 | time_t sleepTime = wakeApt->GetTime() - now; |
sgnezdov | 10:8cff30b5b90d | 189 | tr_debug("[process] job %d wake up in %d seconds", wakeJob->GetID(), sleepTime); |
sgnezdov | 3:f08f55827736 | 190 | WakeOnce.attach(callback(this, &Scheduler::onWakeOnce), sleepTime); |
sgnezdov | 3:f08f55827736 | 191 | } else { |
sgnezdov | 3:f08f55827736 | 192 | // process job |
sgnezdov | 10:8cff30b5b90d | 193 | tr_debug("[process] job ID %d ready to run", wakeJob->GetID()); |
sgnezdov | 3:f08f55827736 | 194 | _timeline.remove(1); |
sgnezdov | 4:78bcd5a675e1 | 195 | _runs.put(wakeApt); |
sgnezdov | 12:684ddfc57199 | 196 | // make sure we run this function one more time |
sgnezdov | 12:684ddfc57199 | 197 | // in case there are jobs left to run |
sgnezdov | 12:684ddfc57199 | 198 | // |
sgnezdov | 12:684ddfc57199 | 199 | // don't use WakeOnce, because it appears to work only for |
sgnezdov | 12:684ddfc57199 | 200 | // one wake up request at a time. |
sgnezdov | 12:684ddfc57199 | 201 | _updates.put(&jobRunReq); |
sgnezdov | 3:f08f55827736 | 202 | } |
sgnezdov | 4:78bcd5a675e1 | 203 | } |
sgnezdov | 4:78bcd5a675e1 | 204 | |
sgnezdov | 4:78bcd5a675e1 | 205 | void Scheduler::runHandler() { |
sgnezdov | 7:98c8b2eabea3 | 206 | while (!_quitRunner) { |
sgnezdov | 10:8cff30b5b90d | 207 | tr_debug("[runHandler] waiting for action"); |
sgnezdov | 4:78bcd5a675e1 | 208 | // wait forever ... |
sgnezdov | 4:78bcd5a675e1 | 209 | osEvent evt = _runs.get(); |
sgnezdov | 4:78bcd5a675e1 | 210 | if (evt.status == osEventMessage) { |
sgnezdov | 10:8cff30b5b90d | 211 | tr_debug("[runHandler] run action"); |
sgnezdov | 4:78bcd5a675e1 | 212 | Appointment *apt = (Appointment*)evt.value.p; |
sgnezdov | 7:98c8b2eabea3 | 213 | if (NULL == apt) { |
sgnezdov | 10:8cff30b5b90d | 214 | tr_debug("[runHandler] quit requested"); |
sgnezdov | 7:98c8b2eabea3 | 215 | _quitRunner = true; |
sgnezdov | 7:98c8b2eabea3 | 216 | break; |
sgnezdov | 7:98c8b2eabea3 | 217 | } |
sgnezdov | 5:d8f69ac330f2 | 218 | Job *job = apt->GetJob(); |
sgnezdov | 10:8cff30b5b90d | 219 | JobType *jt = _jobService->GetJob(job->GetTypeID()); |
sgnezdov | 10:8cff30b5b90d | 220 | if (jt == NULL) { |
sgnezdov | 10:8cff30b5b90d | 221 | tr_error("[runHandler] NO FUNC for job type id %d", job->GetTypeID()); |
sgnezdov | 5:d8f69ac330f2 | 222 | // NO reschedule |
sgnezdov | 5:d8f69ac330f2 | 223 | delete apt; |
sgnezdov | 5:d8f69ac330f2 | 224 | continue; |
sgnezdov | 5:d8f69ac330f2 | 225 | } |
sgnezdov | 10:8cff30b5b90d | 226 | tr_debug("Job Started"); |
sgnezdov | 10:8cff30b5b90d | 227 | jt->RunJob(); |
sgnezdov | 10:8cff30b5b90d | 228 | tr_debug("Job Finished"); |
sgnezdov | 5:d8f69ac330f2 | 229 | this->reschedule(apt); |
sgnezdov | 4:78bcd5a675e1 | 230 | } else { |
sgnezdov | 10:8cff30b5b90d | 231 | tr_error("[runHandler] NOT osEventMessage"); |
sgnezdov | 4:78bcd5a675e1 | 232 | } |
sgnezdov | 4:78bcd5a675e1 | 233 | } |
sgnezdov | 4:78bcd5a675e1 | 234 | } |
sgnezdov | 3:f08f55827736 | 235 | |
sgnezdov | 0:806403f3d0d1 | 236 | |
sgnezdov | 0:806403f3d0d1 | 237 | } |