slides

05/04_deadlock/07/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_CXX_STANDARD 17)
+
+project(cpptest LANGUAGES CXX)
+
+add_executable(cpptest main.cpp)
+
+find_package(Threads REQUIRED)
+target_link_libraries(cpptest PUBLIC Threads::Threads)

05/04_deadlock/07/main.cpp

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+#include <iostream>
+#include <string>
+#include <thread>
+#include <mutex>
+
+int main() {
+    std::mutex mtx1;
+    std::mutex mtx2;
+
+    std::thread t1([&] {
+        for (int i = 0; i < 1000; i++) {
+            mtx1.lock();
+            mtx2.lock();
+            mtx2.unlock();
+            mtx1.unlock();
+        }
+    });
+    std::thread t2([&] {
+        for (int i = 0; i < 1000; i++) {
+            mtx2.lock();
+            mtx1.lock();
+            mtx1.unlock();
+            mtx2.unlock();
+        }
+    });
+    t1.join();
+    t2.join();
+    return 0;
+}

05/04_deadlock/07/run.sh

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+#!/bin/bash
+set -e
+
+cmake -B build
+cmake --build build
+build/cpptest

05/04_deadlock/08/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_CXX_STANDARD 17)
+
+project(cpptest LANGUAGES CXX)
+
+add_executable(cpptest main.cpp)
+
+find_package(Threads REQUIRED)
+target_link_libraries(cpptest PUBLIC Threads::Threads)

05/04_deadlock/08/main.cpp

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+#include <iostream>
+#include <string>
+#include <thread>
+#include <mutex>
+
+int main() {
+    std::mutex mtx1;
+    std::mutex mtx2;
+
+    std::thread t1([&] {
+        for (int i = 0; i < 1000; i++) {
+            mtx1.lock();
+            mtx2.lock();
+            mtx2.unlock();
+            mtx1.unlock();
+        }
+    });
+    std::thread t2([&] {
+        for (int i = 0; i < 1000; i++) {
+            mtx1.lock();
+            mtx2.lock();
+            mtx2.unlock();
+            mtx1.unlock();
+        }
+    });
+    t1.join();
+    t2.join();
+    return 0;
+}

05/04_deadlock/08/run.sh

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+#!/bin/bash
+set -e
+
+cmake -B build
+cmake --build build
+build/cpptest

05/04_deadlock/09/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_CXX_STANDARD 17)
+
+project(cpptest LANGUAGES CXX)
+
+add_executable(cpptest main.cpp)
+
+find_package(Threads REQUIRED)
+target_link_libraries(cpptest PUBLIC Threads::Threads)

05/04_deadlock/09/main.cpp

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+#include <iostream>
+#include <string>
+#include <thread>
+#include <mutex>
+
+int main() {
+    std::mutex mtx1;
+    std::mutex mtx2;
+
+    std::thread t1([&] {
+        for (int i = 0; i < 1000; i++) {
+            mtx1.lock();
+            mtx1.unlock();
+            mtx2.lock();
+            mtx2.unlock();
+        }
+    });
+    std::thread t2([&] {
+        for (int i = 0; i < 1000; i++) {
+            mtx2.lock();
+            mtx2.unlock();
+            mtx1.lock();
+            mtx1.unlock();
+        }
+    });
+    t1.join();
+    t2.join();
+    return 0;
+}

05/04_deadlock/09/run.sh

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+#!/bin/bash
+set -e
+
+cmake -B build
+cmake --build build
+build/cpptest

05/04_deadlock/10/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_CXX_STANDARD 17)
+
+project(cpptest LANGUAGES CXX)
+
+add_executable(cpptest main.cpp)
+
+find_package(Threads REQUIRED)
+target_link_libraries(cpptest PUBLIC Threads::Threads)

05/04_deadlock/10/main.cpp

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+#include <iostream>
+#include <mutex>
+
+std::mutex mtx1;
+
+void other() {
+    mtx1.lock();
+    // do something
+    mtx1.unlock();
+}
+
+void func() {
+    mtx1.lock();
+    other();
+    mtx1.unlock();
+}
+
+int main() {
+    func();
+    return 0;
+}

05/04_deadlock/10/run.sh

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+#!/bin/bash
+set -e
+
+cmake -B build
+cmake --build build
+build/cpptest

05/04_deadlock/11/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_CXX_STANDARD 17)
+
+project(cpptest LANGUAGES CXX)
+
+add_executable(cpptest main.cpp)
+
+find_package(Threads REQUIRED)
+target_link_libraries(cpptest PUBLIC Threads::Threads)

05/04_deadlock/11/main.cpp

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+#include <iostream>
+#include <mutex>
+
+std::mutex mtx1;
+
+/// NOTE: please lock mtx1 before calling other()
+void other() {
+    // do something
+}
+
+void func() {
+    mtx1.lock();
+    other();
+    mtx1.unlock();
+}
+
+int main() {
+    func();
+    return 0;
+}

05/04_deadlock/11/run.sh

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+#!/bin/bash
+set -e
+
+cmake -B build
+cmake --build build
+build/cpptest

05/04_deadlock/12/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_CXX_STANDARD 17)
+
+project(cpptest LANGUAGES CXX)
+
+add_executable(cpptest main.cpp)
+
+find_package(Threads REQUIRED)
+target_link_libraries(cpptest PUBLIC Threads::Threads)

05/04_deadlock/12/main.cpp

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+#include <iostream>
+#include <mutex>
+
+std::recursive_mutex mtx1;
+
+void other() {
+    mtx1.lock();
+    // do something
+    mtx1.unlock();
+}
+
+void func() {
+    mtx1.lock();
+    other();
+    mtx1.unlock();
+}
+
+int main() {
+    func();
+    return 0;
+}

05/04_deadlock/12/run.sh

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+#!/bin/bash
+set -e
+
+cmake -B build
+cmake --build build
+build/cpptest

05/04_deadlock/13/CMakeLists.txt

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_CXX_STANDARD 17)
+
+project(cpptest LANGUAGES CXX)
+
+add_executable(cpptest main.cpp)
+
+find_package(Threads REQUIRED)
+target_link_libraries(cpptest PUBLIC Threads::Threads)

05/04_deadlock/13/main.cpp

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+#include <iostream>
+#include <mutex>
+
+std::recursive_mutex mtx1;
+
+void other() {
+    mtx1.lock();
+    // do something
+    mtx1.unlock();
+}
+
+void func() {
+    mtx1.lock();
+    other();
+    mtx1.unlock();
+}
+
+int main() {
+    func();
+    return 0;
+}

05/04_deadlock/13/run.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+cmake -B build
+cmake --build build
+build/cpptest