diff --git a/storm/Thread.hpp b/storm/Thread.hpp
index 1c84d3e..ad83c3b 100644
--- a/storm/Thread.hpp
+++ b/storm/Thread.hpp
@@ -1,6 +1,7 @@
 #ifndef STORM_THREAD_HPP
 #define STORM_THREAD_HPP
 
+#include "storm/thread/CSRWLock.hpp"
 #include "storm/thread/SCritSect.hpp"
 #include "storm/thread/SEvent.hpp"
 #include "storm/thread/SSyncObject.hpp"
diff --git a/storm/thread/CSRWLock.cpp b/storm/thread/CSRWLock.cpp
new file mode 100644
index 0000000..47f90af
--- /dev/null
+++ b/storm/thread/CSRWLock.cpp
@@ -0,0 +1,25 @@
+#include "storm/thread/CSRWLock.hpp"
+
+void CSRWLock::Enter(int32_t forwriting) {
+#ifdef PLATFORM_WIN
+    // TODO
+#endif
+
+#if defined(PLATFORM_MAC) || defined(PLATFORM_LINUX)
+    if (forwriting) {
+        pthread_rwlock_wrlock(&this->m_lock);
+    } else {
+        pthread_rwlock_rdlock(&this->m_lock);
+    }
+#endif
+}
+
+void CSRWLock::Leave(int32_t fromwriting) {
+#ifdef PLATFORM_WIN
+    // TODO
+#endif
+
+#if defined(PLATFORM_MAC) || defined(PLATFORM_LINUX)
+    pthread_rwlock_unlock(&this->m_lock);
+#endif
+}
diff --git a/storm/thread/CSRWLock.hpp b/storm/thread/CSRWLock.hpp
new file mode 100644
index 0000000..6425cce
--- /dev/null
+++ b/storm/thread/CSRWLock.hpp
@@ -0,0 +1,26 @@
+#ifndef STORM_THREAD_CS_RW_LOCK_HPP
+#define STORM_THREAD_CS_RW_LOCK_HPP
+
+#include <cstdint>
+
+#if defined(PLATFORM_MAC) || defined(PLATFORM_LINUX)
+#include <pthread.h>
+#endif
+
+class CSRWLock {
+    public:
+    // Member variables
+#ifdef PLATFORM_WIN
+    char m_opaqueData[12];
+#endif
+
+#if defined(PLATFORM_MAC) || defined(PLATFORM_LINUX)
+    pthread_rwlock_t m_lock;
+#endif
+
+    // Member functions
+    void Enter(int32_t forwriting);
+    void Leave(int32_t fromwriting);
+};
+
+#endif