| 1 | // %flair:license{
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| 2 | // This file is part of the Flair framework distributed under the
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| 3 | // CECILL-C License, Version 1.0.
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| 4 | // %flair:license}
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| 5 | // created: 2016/11/16
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| 6 | // filename: Semaphore_impl.cpp
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| 7 | //
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| 8 | // author: Thomas Fuhrmann
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| 9 | // Copyright Heudiasyc UMR UTC/CNRS 7253
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| 10 | //
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| 11 | // version: $Id: $
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| 12 | //
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| 13 | // purpose: Class defining a semaphore implementation
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| 14 | //
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| 15 | //
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| 16 | /*********************************************************************/
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| 17 |
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| 18 | #include "Semaphore.h"
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| 19 | #include "Semaphore_impl.h"
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| 20 |
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| 21 | #include <string.h>
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| 22 |
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| 23 | using std::string;
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| 24 | using namespace flair::core;
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| 25 |
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| 26 | Semaphore_impl::Semaphore_impl(Semaphore *self, uint32_t initialValue) {
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| 27 | this->self = self;
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| 28 | int status;
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| 29 | #ifdef __XENO__
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| 30 | status = rt_sem_create(&semaphore, NULL, initialValue, S_FIFO);
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| 31 | #else
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| 32 | status = sem_init(&semaphore, 0, initialValue);
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| 33 | #endif
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| 34 | if (status != 0) {
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| 35 | self->Err("error creating semaphore (%s)\n", strerror(-status));
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| 36 | }
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| 37 | }
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| 38 |
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| 39 | Semaphore_impl::~Semaphore_impl() {
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| 40 | int status;
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| 41 | #ifdef __XENO__
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| 42 | status = rt_sem_delete(&semaphore);
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| 43 | #else
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| 44 | status = sem_destroy(&semaphore);
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| 45 | #endif
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| 46 | if (status != 0)
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| 47 | self->Err("error destroying semaphore (%s)\n", strerror(-status));
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| 48 | }
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| 49 |
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| 50 | void Semaphore_impl::GetSemaphore(void) {
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| 51 | int status;
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| 52 | #ifdef __XENO__
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| 53 | status = rt_sem_p(&semaphore, TM_INFINITE);
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| 54 | #else
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| 55 | status = sem_wait(&semaphore);
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| 56 | #endif
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| 57 | if (status != 0)
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| 58 | self->Err("error getting the semaphore (%s)\n", strerror(-status));
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| 59 | }
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| 60 |
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| 61 | void Semaphore_impl::ReleaseSemaphore(void) {
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| 62 | int status;
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| 63 | #ifdef __XENO__
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| 64 | status = rt_sem_v(&semaphore);
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| 65 | #else
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| 66 | status = sem_post(&semaphore);
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| 67 | #endif
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| 68 | if (status != 0)
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| 69 | self->Err("error releasing the semaphore (%s)\n", strerror(-status));
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| 70 | }
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