| 121 | } |
| 122 | |
| 123 | void FastLock::lock() { |
| 124 | #ifdef HAVE_CPP_THREADS |
| 125 | while (_lock.test_and_set()) { |
| 126 | } |
| 127 | bool empty = _owner < 0; |
| 128 | if (empty) { |
| 129 | _owner = vmem.current_process; |
| 130 | } else { |
| 131 | int p = vmem.current_process; |
| 132 | vmem.metapage->process_info[p].next = -1; |
| 133 | if (_head < 0) |
| 134 | _head = p; |
| 135 | else |
| 136 | vmem.metapage->process_info[_tail].next = p; |
| 137 | _tail = p; |
| 138 | } |
| 139 | _lock.clear(); |
| 140 | if (!empty) |
| 141 | wait_signal(false); |
| 142 | #else |
| 143 | lock_file(vmem.fd, _offset); |
| 144 | #endif |
| 145 | } |
| 146 | |
| 147 | void FastLock::unlock() { |
| 148 | #ifdef HAVE_CPP_THREADS |
no test coverage detected