exception_context.cpp

cpp/cpp11/exception_context.cpp

@@ -0,0 +1,57 @@
+/*
+VIM: let b:lcppflags="-std=c++14 -O2 -pthread -I."
+VIM: let b:wcppflags="/O2 /EHsc /DWIN32"
+VIM-: let b:cppflags=g:Iboost.g:Itbb
+VIM-: let b:ldflags=g:Lboost.g:Ltbb
+VIM-: let b:ldlibpath=g:Bboost.g:Btbb
+VIM-: let b:argv=""
+*/
+#include <iostream>
+#include <exception>
+#include <chrono>
+#include <stdexcept>
+
+void print_exception()
+{
+    try {
+        std::rethrow_exception(std::current_exception());
+    } catch ( const std::exception& e ) {
+        std::cout << e.what() << std::endl;
+    }
+}
+
+int main ( void )
+{try{
+    auto begin = std::chrono::high_resolution_clock::now();
+
+    try {
+        throw std::runtime_error("first exception");
+    } catch(...) {
+        try {
+            throw std::runtime_error("second exception");
+        } catch (...) {
+            print_exception();
+        }
+        print_exception();
+    }
+
+    //......
+
+    auto end = std::chrono::high_resolution_clock::now();
+    std::chrono::duration<double> seconds = end - begin;
+    std::cout << "Time: " << seconds.count() << std::endl;
+    return 0;
+}
+catch ( const std::exception& e )
+{
+    std::cerr << std::endl
+            << "std::exception(\"" << e.what() << "\")." << std::endl;
+    return 2;
+}
+catch ( ... )
+{
+    std::cerr  << std::endl
+            << "unknown exception." << std::endl;
+    return 1;
+}}
+