| 161 | #endif // MMKV_WIN32 |
| 162 | |
| 163 | bool FileLock::unlock(LockType lockType) { |
| 164 | if (!isFileLockValid()) { |
| 165 | return false; |
| 166 | } |
| 167 | bool unlockToSharedLock = false; |
| 168 | |
| 169 | if (lockType == SharedLockType) { |
| 170 | if (m_sharedLockCount == 0) { |
| 171 | return false; |
| 172 | } |
| 173 | // don't want shared-lock to break any existing locks |
| 174 | if (m_sharedLockCount > 1 || m_exclusiveLockCount > 0) { |
| 175 | m_sharedLockCount--; |
| 176 | return true; |
| 177 | } |
| 178 | } else { |
| 179 | if (m_exclusiveLockCount == 0) { |
| 180 | return false; |
| 181 | } |
| 182 | if (m_exclusiveLockCount > 1) { |
| 183 | m_exclusiveLockCount--; |
| 184 | return true; |
| 185 | } |
| 186 | // restore shared-lock when all exclusive-locks are done |
| 187 | if (m_sharedLockCount > 0) { |
| 188 | unlockToSharedLock = true; |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | auto ret = platformUnLock(unlockToSharedLock); |
| 193 | if (ret) { |
| 194 | if (lockType == SharedLockType) { |
| 195 | m_sharedLockCount--; |
| 196 | } else { |
| 197 | m_exclusiveLockCount--; |
| 198 | } |
| 199 | } |
| 200 | return ret; |
| 201 | } |
| 202 | |
| 203 | void FileLock::destroyAndUnLock() { |
| 204 | platformUnLock(false); |
nothing calls this directly
no outgoing calls
no test coverage detected