diff options
Diffstat (limited to 'works/life/operating-system-challenge')
| -rw-r--r-- | works/life/operating-system-challenge/.gitignore | 1 | ||||
| -rw-r--r-- | works/life/operating-system-challenge/1/README.md | 10 | ||||
| -rw-r--r-- | works/life/operating-system-challenge/1/effect.png | bin | 0 -> 136979 bytes | |||
| -rw-r--r-- | works/life/operating-system-challenge/1/main.cpp | 33 | ||||
| -rw-r--r-- | works/life/operating-system-challenge/1/sample.jpg | bin | 0 -> 125777 bytes | |||
| -rw-r--r-- | works/life/operating-system-challenge/2/README.md | 5 | ||||
| -rw-r--r-- | works/life/operating-system-challenge/2/sample.jpg | bin | 0 -> 82879 bytes | |||
| -rw-r--r-- | works/life/operating-system-challenge/README.md | 1 |
8 files changed, 50 insertions, 0 deletions
diff --git a/works/life/operating-system-challenge/.gitignore b/works/life/operating-system-challenge/.gitignore new file mode 100644 index 0000000..1feae78 --- /dev/null +++ b/works/life/operating-system-challenge/.gitignore @@ -0,0 +1 @@ +*.exe
diff --git a/works/life/operating-system-challenge/1/README.md b/works/life/operating-system-challenge/1/README.md new file mode 100644 index 0000000..2088658 --- /dev/null +++ b/works/life/operating-system-challenge/1/README.md @@ -0,0 +1,10 @@ +> 挑战一：写一个程序，运行该进程时，你的电脑整体 CPU 利用率保持在 100%
+> 示例效果如
+> 
+
+Transaltion: Write a program and make your CPU's usage rate 100%.
+
+Code is in `main.cpp`. Remember to not compile it with O2 optimization, or my dead cycle will be eliminated.
+
+Final effect:
+
diff --git a/works/life/operating-system-challenge/1/effect.png b/works/life/operating-system-challenge/1/effect.png Binary files differnew file mode 100644 index 0000000..b173ea0 --- /dev/null +++ b/works/life/operating-system-challenge/1/effect.png diff --git a/works/life/operating-system-challenge/1/main.cpp b/works/life/operating-system-challenge/1/main.cpp new file mode 100644 index 0000000..0f780ef --- /dev/null +++ b/works/life/operating-system-challenge/1/main.cpp @@ -0,0 +1,33 @@ +// Remember not to use O2 optimization!
+
+#include <thread>
+#include <vector>
+
+int main() {
+ std::vector<std::thread> threads;
+
+ // Because my CPU has 4-core and 8-threads. I open 8 threads.
+ for (int i = 0; i < 8; i++) {
+ std::thread t([] {
+ int i;
+ int j;
+ int k;
+ double d;
+ while (true) {
+ i = i + i;
+ j = j - j;
+ k = k * k;
+ d = d + d;
+ i = i & i;
+ j = j | j;
+ }
+ });
+ threads.push_back(std::move(t));
+ }
+
+ for (auto &t : threads) {
+ t.join();
+ }
+
+ return 0;
+}
diff --git a/works/life/operating-system-challenge/1/sample.jpg b/works/life/operating-system-challenge/1/sample.jpg Binary files differnew file mode 100644 index 0000000..7276bec --- /dev/null +++ b/works/life/operating-system-challenge/1/sample.jpg diff --git a/works/life/operating-system-challenge/2/README.md b/works/life/operating-system-challenge/2/README.md new file mode 100644 index 0000000..e8316ad --- /dev/null +++ b/works/life/operating-system-challenge/2/README.md @@ -0,0 +1,5 @@ +> 挑战二：写一个程序，运行该进程时，你计算机每一个核的 CPU 占用率是各不相同的有规律的曲线
+> 示例效果如：
+> 
+
+Translation: Write a program and make each core of your CPU get a different but regular usage rate graph.
diff --git a/works/life/operating-system-challenge/2/sample.jpg b/works/life/operating-system-challenge/2/sample.jpg Binary files differnew file mode 100644 index 0000000..53b9f89 --- /dev/null +++ b/works/life/operating-system-challenge/2/sample.jpg diff --git a/works/life/operating-system-challenge/README.md b/works/life/operating-system-challenge/README.md new file mode 100644 index 0000000..8a5898d --- /dev/null +++ b/works/life/operating-system-challenge/README.md @@ -0,0 +1 @@ +Some challenges raised by my Operating System teacher, aka. Li Hao.
|
