public:
class ReadHolder {
- public:
ReadHolder() : lock_(nullptr) {}
- explicit ReadHolder(const SharedMutexImpl* lock) : ReadHolder(*lock) {}
+ public:
+ explicit ReadHolder(const SharedMutexImpl* lock)
+ : lock_(const_cast<SharedMutexImpl*>(lock)) {
+ if (lock_) {
+ lock_->lock_shared(token_);
+ }
+ }
explicit ReadHolder(const SharedMutexImpl& lock)
: lock_(const_cast<SharedMutexImpl*>(&lock)) {
};
class UpgradeHolder {
- public:
UpgradeHolder() : lock_(nullptr) {}
- explicit UpgradeHolder(SharedMutexImpl* lock) : UpgradeHolder(*lock) {}
+ public:
+ explicit UpgradeHolder(SharedMutexImpl* lock) : lock_(lock) {
+ if (lock_) {
+ lock_->lock_upgrade();
+ }
+ }
explicit UpgradeHolder(SharedMutexImpl& lock) : lock_(&lock) {
lock_->lock_upgrade();
};
class WriteHolder {
- public:
WriteHolder() : lock_(nullptr) {}
- explicit WriteHolder(SharedMutexImpl* lock) : WriteHolder(*lock) {}
+ public:
+ explicit WriteHolder(SharedMutexImpl* lock) : lock_(lock) {
+ if (lock_) {
+ lock_->lock();
+ }
+ }
explicit WriteHolder(SharedMutexImpl& lock) : lock_(&lock) {
lock_->lock();