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authorYuqian Yang <crupest@crupest.life>2025-02-28 23:13:39 +0800
committerYuqian Yang <crupest@crupest.life>2025-02-28 23:13:39 +0800
commitdc1f0c4c0096013799416664894c5194dc7e1f52 (patch)
tree2f5d235f778cd720f4c39ec3e56b77ba6d99f375 /works/life/operating-system-challenge/1
parent7299d424d90b1effb6db69e3476ddd5af72eeba4 (diff)
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-rw-r--r--works/life/operating-system-challenge/1/README.md10
-rw-r--r--works/life/operating-system-challenge/1/effect.pngbin136979 -> 0 bytes
-rw-r--r--works/life/operating-system-challenge/1/main.cpp33
-rw-r--r--works/life/operating-system-challenge/1/sample.jpgbin125777 -> 0 bytes
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diff --git a/works/life/operating-system-challenge/1/README.md b/works/life/operating-system-challenge/1/README.md
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-> 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
-> ![sample](sample.jpg)
-
-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 loop will be eliminated.
-
-Final effect:
-![effect](effect.png)
diff --git a/works/life/operating-system-challenge/1/effect.png b/works/life/operating-system-challenge/1/effect.png
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diff --git a/works/life/operating-system-challenge/1/main.cpp b/works/life/operating-system-challenge/1/main.cpp
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-// 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
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