| Directory: | ./ |
|---|---|
| File: | pdserv-1.1.0/src/lib/Signal.cpp |
| Date: | 2024-11-17 04:08:36 |
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| Lines: | 6 | 25 | 24.0% |
| Branches: | 3 | 38 | 7.9% |
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| 1 | /***************************************************************************** | ||
| 2 | * | ||
| 3 | * $Id$ | ||
| 4 | * | ||
| 5 | * Copyright 2010 Richard Hacker (lerichi at gmx dot net) | ||
| 6 | * | ||
| 7 | * This file is part of the pdserv library. | ||
| 8 | * | ||
| 9 | * The pdserv library is free software: you can redistribute it and/or modify | ||
| 10 | * it under the terms of the GNU Lesser General Public License as published | ||
| 11 | * by the Free Software Foundation, either version 3 of the License, or (at | ||
| 12 | * your option) any later version. | ||
| 13 | * | ||
| 14 | * The pdserv library is distributed in the hope that it will be useful, but | ||
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | ||
| 16 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public | ||
| 17 | * License for more details. | ||
| 18 | * | ||
| 19 | * You should have received a copy of the GNU Lesser General Public License | ||
| 20 | * along with the pdserv library. If not, see <http://www.gnu.org/licenses/>. | ||
| 21 | * | ||
| 22 | *****************************************************************************/ | ||
| 23 | |||
| 24 | #include "../Debug.h" | ||
| 25 | |||
| 26 | #include "../SessionTask.h" | ||
| 27 | #include "Signal.h" | ||
| 28 | #include "Main.h" | ||
| 29 | #include "SessionTaskData.h" | ||
| 30 | #include "../DataType.h" | ||
| 31 | |||
| 32 | ////////////////////////////////////////////////////////////////////// | ||
| 33 | const size_t Signal::dataTypeIndex[PdServ::DataType::maxWidth+1] = { | ||
| 34 | 3 /*0*/, 3 /*1*/, 2 /*2*/, 3 /*3*/, | ||
| 35 | 1 /*4*/, 3 /*5*/, 3 /*6*/, 3 /*7*/, 0 /*8*/ | ||
| 36 | }; | ||
| 37 | |||
| 38 | ////////////////////////////////////////////////////////////////////// | ||
| 39 | 60 | Signal::Signal( Task *task, | |
| 40 | size_t index, | ||
| 41 | unsigned int decimation, | ||
| 42 | const char *path, | ||
| 43 | const PdServ::DataType& dtype, | ||
| 44 | const void *addr, | ||
| 45 | size_t ndims, | ||
| 46 | 60 | const size_t *dim): | |
| 47 | 60 | PdServ::Signal(path, task->sampleTime, decimation, dtype, ndims, dim), | |
| 48 | addr(reinterpret_cast<const char *>(addr)), | ||
| 49 | index(index), task(task), | ||
| 50 |
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120 | mutex(1) |
| 51 | { | ||
| 52 | 60 | } | |
| 53 | |||
| 54 | ////////////////////////////////////////////////////////////////////// | ||
| 55 | ✗ | void Signal::subscribe(PdServ::SessionTask *s) const | |
| 56 | { | ||
| 57 | ✗ | ost::SemaphoreLock lock(mutex); | |
| 58 | |||
| 59 | ✗ | if (sessions.empty()) { | |
| 60 | // log_debug("Request signal from RT task %p", s); | ||
| 61 | ✗ | task->subscribe(this, true); | |
| 62 | } | ||
| 63 | ✗ | else if (s->sessionTaskData->isBusy(this)) { | |
| 64 | // log_debug("Signal already transferred"); | ||
| 65 | ✗ | s->newSignal(this); | |
| 66 | } | ||
| 67 | |||
| 68 | ✗ | sessions.insert(s); | |
| 69 | } | ||
| 70 | |||
| 71 | ////////////////////////////////////////////////////////////////////// | ||
| 72 | ✗ | void Signal::unsubscribe(PdServ::SessionTask *s) const | |
| 73 | { | ||
| 74 | ✗ | ost::SemaphoreLock lock(mutex); | |
| 75 | |||
| 76 | ✗ | if (sessions.erase(s) and sessions.empty()) | |
| 77 | ✗ | task->subscribe(this, false); | |
| 78 | } | ||
| 79 | |||
| 80 | ////////////////////////////////////////////////////////////////////// | ||
| 81 | ✗ | double Signal::poll(const PdServ::Session *, | |
| 82 | void *dest, struct timespec *) const | ||
| 83 | { | ||
| 84 | ✗ | task->pollPrepare(this, dest); | |
| 85 | |||
| 86 | ✗ | return task->sampleTime / 2; | |
| 87 | } | ||
| 88 | |||
| 89 | ////////////////////////////////////////////////////////////////////// | ||
| 90 | ✗ | void Signal::getValue( const PdServ::Session*, void *dest, | |
| 91 | struct timespec *t) const | ||
| 92 | { | ||
| 93 | ✗ | const PdServ::Signal *signal = this; | |
| 94 | |||
| 95 | ✗ | task->main->poll(0, &signal, 1, dest, t); | |
| 96 | } | ||
| 97 | |||
| 98 | ////////////////////////////////////////////////////////////////////// | ||
| 99 | ✗ | const char *Signal::getValue(const PdServ::SessionTask* st) const | |
| 100 | { | ||
| 101 | ✗ | return st->sessionTaskData->getValue(this); | |
| 102 | 3 | } | |
| 103 |