diff options
| -rw-r--r-- | works/life/operating-system-challenge/1/README.md | 2 | ||||
| -rw-r--r-- | works/life/operating-system-challenge/2/README.md | 5 | ||||
| -rw-r--r-- | works/life/operating-system-challenge/2/effect.png | bin | 0 -> 179599 bytes | |||
| -rw-r--r-- | works/life/operating-system-challenge/2/main.cpp | 73 |
4 files changed, 79 insertions, 1 deletions
diff --git a/works/life/operating-system-challenge/1/README.md b/works/life/operating-system-challenge/1/README.md index 2088658..db7b627 100644 --- a/works/life/operating-system-challenge/1/README.md +++ b/works/life/operating-system-challenge/1/README.md @@ -4,7 +4,7 @@ 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.
+Code is in `main.cpp`. Remember to not compile it with O2 optimization, or my dead loop will be eliminated.
Final effect:
diff --git a/works/life/operating-system-challenge/2/README.md b/works/life/operating-system-challenge/2/README.md index e8316ad..86672f5 100644 --- a/works/life/operating-system-challenge/2/README.md +++ b/works/life/operating-system-challenge/2/README.md @@ -3,3 +3,8 @@ > 
Translation: Write a program and make each core of your CPU get a different but regular usage rate graph.
+
+Code is in `main.cpp`. Remember to not compile it with O2 optimization, or my loop will be eliminated.
+
+Final effect:
+
diff --git a/works/life/operating-system-challenge/2/effect.png b/works/life/operating-system-challenge/2/effect.png Binary files differnew file mode 100644 index 0000000..984a3da --- /dev/null +++ b/works/life/operating-system-challenge/2/effect.png diff --git a/works/life/operating-system-challenge/2/main.cpp b/works/life/operating-system-challenge/2/main.cpp new file mode 100644 index 0000000..a497442 --- /dev/null +++ b/works/life/operating-system-challenge/2/main.cpp @@ -0,0 +1,73 @@ +#include <Windows.h>
+#include <cmath>
+
+DWORD WINAPI Thread1(_In_ LPVOID lpParameter) {
+ int i;
+ while (true) {
+ i++;
+ }
+ return 0;
+}
+
+DWORD WINAPI Thread2(_In_ LPVOID lpParameter) {
+ while (true) {
+ for (long long i = 0; i < 5000000000; i++)
+ ;
+ Sleep(10000);
+ }
+
+ return 0;
+}
+
+DWORD WINAPI Thread3(_In_ LPVOID lpParameter) {
+ while (true) {
+ for (int i = 0; i < 4000000; i++)
+ ;
+ Sleep(10);
+ }
+
+ return 0;
+}
+
+DWORD WINAPI Thread4(_In_ LPVOID lpParameter) {
+ LARGE_INTEGER frequency;
+ QueryPerformanceFrequency(&frequency);
+
+ LARGE_INTEGER count;
+ QueryPerformanceCounter(&count);
+
+ double current_y = 0;
+
+ while (true) {
+ for (int i = 0; i < 3000000.0 * (1.0 + current_y); i++)
+ ;
+ Sleep(10 * (1 - current_y));
+
+ LARGE_INTEGER new_count;
+ QueryPerformanceCounter(&new_count);
+
+ auto s = (new_count.QuadPart - count.QuadPart) / frequency.QuadPart;
+ current_y = std::sin(s / 30.0 * 2 * 3.1415926535) * 0.6;
+ }
+
+ return 0;
+}
+
+int main() {
+ HANDLE thread1 = CreateThread(NULL, 0, Thread1, NULL, 0, NULL);
+ HANDLE thread2 = CreateThread(NULL, 0, Thread2, NULL, 0, NULL);
+ HANDLE thread3 = CreateThread(NULL, 0, Thread3, NULL, 0, NULL);
+ HANDLE thread4 = CreateThread(NULL, 0, Thread4, NULL, 0, NULL);
+
+ SetThreadAffinityMask(thread1, 1);
+ SetThreadAffinityMask(thread2, 1 << 1);
+ SetThreadAffinityMask(thread3, 1 << 2);
+ SetThreadAffinityMask(thread4, 1 << 3);
+
+ WaitForSingleObject(thread1, INFINITE);
+ WaitForSingleObject(thread2, INFINITE);
+ WaitForSingleObject(thread3, INFINITE);
+ WaitForSingleObject(thread4, INFINITE);
+
+ return 0;
+}
|
