From dc0dfeec23158268268da5a16364abb1f0de5a06 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 12 Jun 2021 23:20:15 +0800
Subject: import(life): ...

---
 .../operating-system-experiment/CMakeLists.txt     |  2 ++
 .../DeadLockDetectionDemo.cpp                      | 25 ++++++++++++++++++++++
 .../ParallelCalculationDemo.cpp                    |  2 ++
 works/life/operating-system-experiment/Thread.h    |  8 -------
 4 files changed, 29 insertions(+), 8 deletions(-)
 create mode 100644 works/life/operating-system-experiment/DeadLockDetectionDemo.cpp

(limited to 'works/life')

diff --git a/works/life/operating-system-experiment/CMakeLists.txt b/works/life/operating-system-experiment/CMakeLists.txt
index 5671b4a..79fe786 100644
--- a/works/life/operating-system-experiment/CMakeLists.txt
+++ b/works/life/operating-system-experiment/CMakeLists.txt
@@ -33,3 +33,5 @@ target_link_libraries(semaphore_avoid_data_race_demo PRIVATE cru_system)
 
 add_executable(parallel_calculation_demo ParallelCalculationDemo.cpp)
 target_link_libraries(parallel_calculation_demo PRIVATE cru_system)
+
+add_executable(dead_lock_detection_demo DeadLockDetectionDemo.cpp)
diff --git a/works/life/operating-system-experiment/DeadLockDetectionDemo.cpp b/works/life/operating-system-experiment/DeadLockDetectionDemo.cpp
new file mode 100644
index 0000000..b22549e
--- /dev/null
+++ b/works/life/operating-system-experiment/DeadLockDetectionDemo.cpp
@@ -0,0 +1,25 @@
+#include <fstream>
+#include <iostream>
+#include <vector>
+
+int main() {
+  std::vector<int> ns;
+
+  while (!std::cin.eof() || std::cin) {
+    int n;
+    std::cin >> n;
+    ns.push_back(n);
+  }
+
+  if (!std::cin.eof()) {
+    std::cerr << "Failed to parse input.\n";
+    return -1;
+  }
+
+  if (ns.size() % 2 != 0) {
+    std::cerr << "Input integer number must be even.\n";
+    return -1;
+  }
+
+  
+}
diff --git a/works/life/operating-system-experiment/ParallelCalculationDemo.cpp b/works/life/operating-system-experiment/ParallelCalculationDemo.cpp
index 7340da8..0174c55 100644
--- a/works/life/operating-system-experiment/ParallelCalculationDemo.cpp
+++ b/works/life/operating-system-experiment/ParallelCalculationDemo.cpp
@@ -12,9 +12,11 @@ int main(int argc, char **argv) {
     thread_number = std::atoi(argv[1]);
     if (thread_number <= 0) {
       std::cerr << "Argument must be a positive integer.\n";
+      return -1;
     }
   } else {
     std::cerr << "Too many arguments.\n";
+    return -1;
   }
 
   std::cout << "Use " << thread_number << " threads to calculate sum of 1-" << N
diff --git a/works/life/operating-system-experiment/Thread.h b/works/life/operating-system-experiment/Thread.h
index 735407c..4ad1ef4 100644
--- a/works/life/operating-system-experiment/Thread.h
+++ b/works/life/operating-system-experiment/Thread.h
@@ -66,14 +66,6 @@ private:
 #endif
 };
 
-namespace details {
-#ifdef CRU_WINDOWS
-CRU_API DWORD WINAPI ThreadProc(_In_ LPVOID lpParameter);
-#else
-void *ThreadProc(void *data);
-#endif
-} // namespace details
-
 template <typename Fn, typename... Args>
 Thread::Thread(Fn &&process, Args &&...args) {
   std::tuple<std::decay_t<Args>...> a{std::forward<Args>(args)...};
-- 
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