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[問題] dos命令模式下的計時指令

[ C_and_CPP ]3 留言, 推噓總分: 0

作者: XXaa - 發表於 2013/12/10 17:59(12年前)

1^F→XXaa:找到方法了自問自答~在寫個簡單的計時程式用system呼叫想12/10 18:29

2^F→XXaa:執行的dos指令最後把時間記下來就可以了~12/10 18:30

3^F→XXaa:http://codepad.org/vm6Qt9cm12/10 18:30

[問題] vector 陣列找不到 size()

[ C_and_CPP ]17 留言, 推噓總分: +1

作者: XXaa - 發表於 2013/01/30 14:48(13年前)

2^F→XXaa:不太懂我以為vector<int> b後面加[N]他會生出N個vector<int>01/30 15:31

3^F→XXaa:跟int a[10]一樣會生出 10個int這樣@@?01/30 15:32

5^F→XXaa:請問所以vector<int> b[N];這樣宣告出來的東西是?一個N格的01/30 15:41

6^F→XXaa:int陣列b?01/30 15:41

9^F→XXaa:喔喔意思是這樣宣告是N格的vector<int> 不過他是用陣列包起01/30 15:50

10^F→XXaa:來所以沒有.size()可以呼叫?01/30 15:51

12^F→XXaa:感謝我了解了~01/30 16:44

Re: [問題] pthread同步問題

[ C_and_CPP ]4 留言, 推噓總分: +1

作者: FAITHY - 發表於 2013/01/24 22:47(13年前)

3^F推XXaa:哦哦這樣也可以~~當初是想說不要用mutex做一個同步函數看看01/25 09:09

4^F→XXaa:想看有沒有用mutex速度有沒有差~~01/25 09:21

[問題] pthread同步問題

[ C_and_CPP ]19 留言, 推噓總分: +3

作者: XXaa - 發表於 2013/01/24 18:59(13年前)

2^F→XXaa:恩我就是用那個做的不過call太頻繁反而比沒生thread慢囧01/24 19:19

6^F→XXaa:不過我覺得很奇怪為啥我自己寫的函數會卡住應該會跑完才對01/24 20:40

7^F→XXaa:可以請大大幫我看一下code嗎?01/24 20:41

9^F→XXaa:奇怪那為啥我跑會卡住>"<01/24 21:47

11^F→XXaa:用樓上大大的改法就可以了~~~感謝原來是volatile QQ01/25 09:18

14^F→XXaa:資料有相依性看起來是同步的太頻繁這種分法失敗了嗎ˊ ˋ01/25 09:50

15^F→XXaa:剛剛測的結果自己寫的while同步比pthread_barrier快一點01/25 09:51

16^F→XXaa:不過整體還是比沒生thread跑慢很多就是了 60s->240s 慢4倍囧01/25 09:52

[問題] pthread同步問題

[ C_and_CPP ]5 留言, 推噓總分: +2

作者: XXaa - 發表於 2013/01/23 19:15(13年前)

5^F→XXaa:謝謝各位的建議:)01/25 10:55

[問題] pthread編譯過不了

[ C_and_CPP ]3 留言, 推噓總分: 0

作者: XXaa - 發表於 2012/10/25 17:14(13年前)

3^F→XXaa:問題解決感謝樓上^^10/25 17:37

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