1 files changed, 97 insertions, 0 deletions
diff --git a/store/works/life/computer-network-experiment/ReadWriteLock.cpp b/store/works/life/computer-network-experiment/ReadWriteLock.cpp
new file mode 100644
index 0000000..46d2857
--- /dev/null
+++ b/store/works/life/computer-network-experiment/ReadWriteLock.cpp
@@ -0,0 +1,97 @@
+#include "ReadWriteLock.h"
+
+#include <cassert>
+#include <memory>
+
+namespace cru {
+ReadWriteLock::ReadWriteLock() {
+#ifdef WIN32
+  lock_ = std::make_unique<SRWLOCK>();
+  InitializeSRWLock(lock_.get());
+#else
+  lock_.reset(new pthread_rwlock_t(PTHREAD_RWLOCK_INITIALIZER));
+  pthread_rwlock_init(lock_.get(), nullptr);
+#endif
+}
+
+ReadWriteLock::ReadWriteLock(ReadWriteLock &&other)
+    : lock_(std::move(other.lock_)) {}
+
+ReadWriteLock &ReadWriteLock::operator=(ReadWriteLock &&other) {
+  if (this != &other) {
+    Destroy();
+    lock_ = std::move(other.lock_);
+  }
+  return *this;
+}
+
+ReadWriteLock::~ReadWriteLock() { Destroy(); }
+
+void ReadWriteLock::ReadLock() {
+  assert(lock_);
+#ifdef WIN32
+  AcquireSRWLockShared(lock_.get());
+#else
+  pthread_rwlock_rdlock(lock_.get());
+#endif
+}
+
+void ReadWriteLock::WriteLock() {
+  assert(lock_);
+#ifdef WIN32
+  AcquireSRWLockExclusive(lock_.get());
+#else
+  pthread_rwlock_wrlock(lock_.get());
+#endif
+}
+
+bool ReadWriteLock::ReadTryLock() {
+  assert(lock_);
+#ifdef WIN32
+  return TryAcquireSRWLockShared(lock_.get()) != 0;
+#else
+  return pthread_rwlock_tryrdlock(lock_.get()) == 0;
+#endif
+}
+
+bool ReadWriteLock::WriteTryLock() {
+  assert(lock_);
+#ifdef WIN32
+  return TryAcquireSRWLockExclusive(lock_.get()) != 0;
+#else
+  return pthread_rwlock_trywrlock(lock_.get()) == 0;
+#endif
+}
+
+void ReadWriteLock::ReadUnlock() {
+  assert(lock_);
+#ifdef WIN32
+  ReleaseSRWLockShared(lock_.get());
+#else
+  pthread_rwlock_unlock(lock_.get());
+#endif
+}
+
+void ReadWriteLock::WriteUnlock() {
+  assert(lock_);
+#ifdef WIN32
+  ReleaseSRWLockExclusive(lock_.get());
+#else
+  pthread_rwlock_unlock(lock_.get());
+#endif
+}
+
+void ReadWriteLock::Destroy() {
+#ifndef WIN32
+  if (lock_ != nullptr)
+    pthread_rwlock_destroy(lock_.get());
+#endif
+}
+
+void swap(ReadWriteLock &left, ReadWriteLock &right) {
+  auto temp = std::move(left.lock_);
+  left.lock_ = std::move(right.lock_);
+  right.lock_ = std::move(temp);
+}
+
+} // namespace cru
+\ No newline at end of file