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Diffstat (limited to 'src/components/utils/src/conditional_variable_boost.cc')
-rw-r--r-- | src/components/utils/src/conditional_variable_boost.cc | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/components/utils/src/conditional_variable_boost.cc b/src/components/utils/src/conditional_variable_boost.cc new file mode 100644 index 0000000000..c07b8284ea --- /dev/null +++ b/src/components/utils/src/conditional_variable_boost.cc @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2013, Ford Motor Company + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following + * disclaimer in the documentation and/or other materials provided with the + * distribution. + * + * Neither the name of the Ford Motor Company nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include "utils/conditional_variable.h" + +#include <errno.h> +#include <time.h> + +#include "utils/lock.h" +#include "utils/logger.h" + +namespace { +const long kNanosecondsPerSecond = 1000000000; +const long kMillisecondsPerSecond = 1000; +const long kNanosecondsPerMillisecond = 1000000; +} // namespace + +namespace sync_primitives { + +CREATE_LOGGERPTR_GLOBAL(logger_, "Utils") + +ConditionalVariable::ConditionalVariable() {} + +ConditionalVariable::~ConditionalVariable() {} + +void ConditionalVariable::NotifyOne() { + cond_var_.notify_one(); +} + +void ConditionalVariable::Broadcast() { + cond_var_.notify_all(); +} + +bool ConditionalVariable::Wait(BaseLock& lock) { + // NOTE this grossness is due to boost mutex and recursive mutex not sharing a + // superclass + + lock.AssertTakenAndMarkFree(); + // What kind of lock are we ? + if (Lock* test_lock = dynamic_cast<Lock*>(&lock)) { + // Regular lock + cond_var_.wait<boost::mutex>(test_lock->mutex_); + } else if (RecursiveLock* test_rec_lock = + dynamic_cast<RecursiveLock*>(&lock)) { + // Recursive lock + cond_var_.wait<boost::recursive_mutex>(test_rec_lock->mutex_); + } else { + // unknown, give up the lock + LOG4CXX_ERROR(logger_, "Unknown lock type!"); + NOTREACHED(); + } + lock.AssertFreeAndMarkTaken(); + + return true; +} + +bool ConditionalVariable::Wait(AutoLock& auto_lock) { + BaseLock& lock = auto_lock.GetLock(); + return Wait(lock); +} + +ConditionalVariable::WaitStatus ConditionalVariable::WaitFor( + AutoLock& auto_lock, uint32_t milliseconds) { + BaseLock& lock = auto_lock.GetLock(); + + WaitStatus wait_status = kNoTimeout; + lock.AssertTakenAndMarkFree(); + bool timeout = true; + + // What kind of lock are we ? + if (Lock* test_lock = dynamic_cast<Lock*>(&lock)) { + // Regular lock + // cond_var_.wait<boost::mutex>(test_lock->mutex_); + timeout = cond_var_.timed_wait<boost::mutex>( + test_lock->mutex_, boost::posix_time::milliseconds(milliseconds)); + } else if (RecursiveLock* test_rec_lock = + dynamic_cast<RecursiveLock*>(&lock)) { + // Recursive lock + // cond_var_.wait<boost::recursive_mutex>(test_rec_lock->mutex_); + timeout = cond_var_.timed_wait<boost::recursive_mutex>( + test_rec_lock->mutex_, boost::posix_time::milliseconds(milliseconds)); + } else { + // this is an unknown lock, we have an issue + LOG4CXX_ERROR(logger_, "Unknown lock type!"); + NOTREACHED(); + } + + if (!timeout) { + wait_status = kTimeout; + } + lock.AssertFreeAndMarkTaken(); + + return wait_status; +} + +} // namespace sync_primitives |