| 1 | #pragma once |
| 2 | /* |
| 3 | * This file is part of the libCEC(R) library. |
| 4 | * |
| 5 | * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited. All rights reserved. |
| 6 | * libCEC(R) is an original work, containing original code. |
| 7 | * |
| 8 | * libCEC(R) is a trademark of Pulse-Eight Limited. |
| 9 | * |
| 10 | * This program is dual-licensed; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 23 | * |
| 24 | * |
| 25 | * Alternatively, you can license this library under a commercial license, |
| 26 | * please contact Pulse-Eight Licensing for more information. |
| 27 | * |
| 28 | * For more information contact: |
| 29 | * Pulse-Eight Licensing <license@pulse-eight.com> |
| 30 | * http://www.pulse-eight.com/ |
| 31 | * http://www.pulse-eight.net/ |
| 32 | */ |
| 33 | |
| 34 | namespace PLATFORM |
| 35 | { |
| 36 | inline pthread_mutexattr_t *GetRecursiveMutexAttribute(void) |
| 37 | { |
| 38 | static pthread_mutexattr_t g_mutexAttr; |
| 39 | static bool bAttributeInitialised = false; |
| 40 | if (!bAttributeInitialised) |
| 41 | { |
| 42 | pthread_mutexattr_init(&g_mutexAttr); |
| 43 | pthread_mutexattr_settype(&g_mutexAttr, PTHREAD_MUTEX_RECURSIVE); |
| 44 | bAttributeInitialised = true; |
| 45 | } |
| 46 | return &g_mutexAttr; |
| 47 | } |
| 48 | |
| 49 | inline struct timespec GetAbsTime(uint64_t iIncreaseBy = 0) |
| 50 | { |
| 51 | struct timespec abstime; |
| 52 | struct timeval now; |
| 53 | gettimeofday(&now, NULL); |
| 54 | iIncreaseBy += now.tv_usec / 1000; |
| 55 | abstime.tv_sec = now.tv_sec + (time_t)(iIncreaseBy / 1000); |
| 56 | abstime.tv_nsec = (int32_t)((iIncreaseBy % (uint32_t)1000) * (uint32_t)1000000); |
| 57 | return abstime; |
| 58 | } |
| 59 | |
| 60 | typedef pthread_t thread_t; |
| 61 | |
| 62 | #define ThreadsCreate(thread, func, arg) (pthread_create(&thread, NULL, (void *(*) (void *))func, (void *)arg) == 0) |
| 63 | #define ThreadsWait(thread, retval) (pthread_join(thread, retval) == 0) |
| 64 | |
| 65 | typedef pthread_mutex_t mutex_t; |
| 66 | #define MutexCreate(mutex) pthread_mutex_init(&mutex, GetRecursiveMutexAttribute()); |
| 67 | #define MutexDelete(mutex) pthread_mutex_destroy(&mutex); |
| 68 | #define MutexLock(mutex) (pthread_mutex_lock(&mutex) == 0) |
| 69 | #define MutexTryLock(mutex) (pthread_mutex_trylock(&mutex) == 0) |
| 70 | #define MutexUnlock(mutex) pthread_mutex_unlock(&mutex) |
| 71 | |
| 72 | class CConditionImpl |
| 73 | { |
| 74 | public: |
| 75 | CConditionImpl(void) |
| 76 | { |
| 77 | pthread_cond_init(&m_condition, NULL); |
| 78 | } |
| 79 | |
| 80 | virtual ~CConditionImpl(void) |
| 81 | { |
| 82 | pthread_cond_destroy(&m_condition); |
| 83 | } |
| 84 | |
| 85 | void Signal(void) |
| 86 | { |
| 87 | pthread_cond_signal(&m_condition); |
| 88 | } |
| 89 | |
| 90 | void Broadcast(void) |
| 91 | { |
| 92 | pthread_cond_broadcast(&m_condition); |
| 93 | } |
| 94 | |
| 95 | bool Wait(mutex_t &mutex, uint32_t iTimeoutMs) |
| 96 | { |
| 97 | sched_yield(); |
| 98 | if (iTimeoutMs > 0) |
| 99 | { |
| 100 | struct timespec timeout = GetAbsTime(iTimeoutMs); |
| 101 | return (pthread_cond_timedwait(&m_condition, &mutex, &timeout) == 0); |
| 102 | } |
| 103 | return (pthread_cond_wait(&m_condition, &mutex) == 0); |
| 104 | } |
| 105 | |
| 106 | pthread_cond_t m_condition; |
| 107 | }; |
| 108 | } |