| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // ====================================================================== | ||
| 2 | // \title Os/Stub/Mutex.cpp | ||
| 3 | // \brief stub implementation for Os::Mutex | ||
| 4 | // ====================================================================== | ||
| 5 | #include "Os/Stub/Mutex.hpp" | ||
| 6 | |||
| 7 | namespace Os { | ||
| 8 | namespace Stub { | ||
| 9 | namespace Mutex { | ||
| 10 | |||
| 11 | ✗ | StubMutex::Status StubMutex::take() { | |
| 12 | // Attempt to mark the mutex as taken. | ||
| 13 | ✗ | if (this->m_handle.m_mutex_taken.exchange(true)) { | |
| 14 | // The mutex was already taken, so fail the operation. | ||
| 15 | // (This stub is for platforms without the ability to block.) | ||
| 16 | ✗ | return Status::ERROR_BUSY; | |
| 17 | } | ||
| 18 | // The mutex was not already taken. | ||
| 19 | // Now that it has been marked as taken, we have successfully entered the critical section. | ||
| 20 | ✗ | return Status::OP_OK; | |
| 21 | } | ||
| 22 | |||
| 23 | ✗ | StubMutex::Status StubMutex::release() { | |
| 24 | // Attempt to mark the mutex as not taken. | ||
| 25 | ✗ | if (!this->m_handle.m_mutex_taken.exchange(false)) { | |
| 26 | // The mutex was already not taken, which indicates a coding defect. | ||
| 27 | ✗ | return Status::ERROR_OTHER; | |
| 28 | } | ||
| 29 | // The mutex was taken. | ||
| 30 | // Now that it has been marked as not taken, we have successfully exited the critical section. | ||
| 31 | ✗ | return Status::OP_OK; | |
| 32 | } | ||
| 33 | |||
| 34 | ✗ | MutexHandle* StubMutex::getHandle() { | |
| 35 | ✗ | return &this->m_handle; | |
| 36 | } | ||
| 37 | } // namespace Mutex | ||
| 38 | } // namespace Stub | ||
| 39 | } // namespace Os | ||
| 40 |