From c6b3297af9c678751c6a183f4f655293c9e1d737 Mon Sep 17 00:00:00 2001
From: zgdgod <1092792570@qq.com>
Date: Sat, 18 Jul 2020 21:27:58 +0800
Subject: [PATCH] Update 2_5_id.cpp
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主要是master_thread只进行了定义，没有赋值，进入main函数之后，才有master_thread_id; 其他就是加了一些输出，看起来直观一点
---
 concurrency/concurrency_v1/chapter2/2_5_id.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/concurrency/concurrency_v1/chapter2/2_5_id.cpp b/concurrency/concurrency_v1/chapter2/2_5_id.cpp
index 67b00d7..905aafb 100644
--- a/concurrency/concurrency_v1/chapter2/2_5_id.cpp
+++ b/concurrency/concurrency_v1/chapter2/2_5_id.cpp
@@ -27,8 +27,12 @@ void some_core_part_of_algorithm() {
 }
 
 int main() {
-    std::cout << std::this_thread::get_id() << endl;
+    master_thread = std::this_thread::get_id();
+    std::cout << "master_thread: " << master_thread << endl;
+    cout << "master_thread 中运行:" << endl;
+    some_core_part_of_algorithm();
+    cout << "thread 中运行:" << endl;
     thread t(some_core_part_of_algorithm);
     t.join();
     return 0;
-}
\ No newline at end of file
+}