first commit

BreakMemory/Cpp/CMakeLists.txt

@@ -0,0 +1,37 @@
+cmake_minimum_required(VERSION 3.10)
+
+# Modify only these if one source file!
+project(CppBreakMemory)
+set(CURRENT_PROJECT_CODE_NAME breakmemory)
+set(FILE_EXT cpp)
+# End
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD_REQUIRED True)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+
+# We want all the warnings and as errors enabled
+if (MSVC)
+    # warning level 4 and all warnings as errors
+    add_compile_options(/W4 /WX)
+else()
+    # lots of warnings and all warnings as errors
+    add_compile_options(-Wall -Wextra -pedantic -Werror)
+
+    set(THREADS_PREFER_PTHREAD_FLAG ON)
+    find_package(Threads REQUIRED)
+    list(APPEND EXTRA_LIBS "Threads::Threads")
+endif()
+
+add_executable(${CMAKE_PROJECT_NAME} ${CMAKE_CURRENT_LIST_DIR}/${CURRENT_PROJECT_CODE_NAME}.${FILE_EXT})
+
+target_include_directories(${CMAKE_PROJECT_NAME} PUBLIC
+					    ${EXTRA_INCLUDES}
+						)
+
+target_link_libraries(${CMAKE_PROJECT_NAME} PUBLIC 
+						${EXTRA_LIBS}
+						)
+						
+

BreakMemory/Cpp/breakmemory.cpp

@@ -0,0 +1,72 @@
+#include <iostream>
+#include <limits>
+#include <mutex>
+#include <condition_variable>
+#include <queue>
+#include <cstdlib>
+#include <thread>
+#include <atomic>
+#include <random>
+#include <memory>
+#include <cstdio>
+
+class Incorrect
+{
+public:
+	Incorrect(size_t iterations = 1000)
+		:	mIterations(iterations)
+	{
+		isReady = false;
+		done = false;
+		newValue = 0xdeadbeef;
+	}
+
+	void RunAndWait()
+	{
+		std::thread consumer(&Incorrect::Consumer, this);
+		std::thread writer(&Incorrect::Writer, this);
+
+		writer.join();
+		consumer.join();
+
+	}
+
+private:
+	void Consumer()
+	{
+		while (!done)
+		{
+			while (isReady != true);
+			auto print = newValue;
+			isReady = false;
+			printf("New Value: %d\n", print);
+		}
+	}
+
+	void Writer()
+	{
+		for (auto i = int(mIterations); i > 0; i--)
+		{
+			while (isReady != false);
+			
+			newValue = i;
+			isReady = true;
+		}
+
+		done = true;
+	}
+
+	const size_t	mIterations;
+	volatile bool	isReady;
+	volatile int	newValue;
+	volatile bool	done;
+};
+
+
+int main()
+{
+	Incorrect incorrect;
+	incorrect.RunAndWait();
+	return 0;
+}
+