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Re: A terminal emulator widget for U++ [message #51468 is a reply to message #51465]

Thu, 28 March 2019 19:21

Oblivion is currently offline

Oblivion
Messages: 1092
Registered: August 2007

Senior Contributor

Quote:

Are you experiencing the same problems or is it something related to my web-server setup?

Yes, after you've pointed out, I've checked the behaviour and it is indeed eating a lot of CPU cylcles (On Linux 5.0, GCC, release mode, AMD ryzen) I get 16% cpu usage in idle state).

Good news is I found a possible candidate and a workaround (or fix maybe?) but Mirek should see it first.

İn Turtle/Server.cpp, method StartSession(), the for loop in between ln 75-123 (where the server is waiting for connections) seems to be the problem:

A simple workaround or a possible fix is to call Sleep(10) in ln: 75.

E.g.

for(;;) {
	if(quit)
		return false;
	Sleep(10);	// Let's eat less CPU cycle while waiting for connections.
//...

OTOH, there are also bad news:

1) It ssems impossible to open multiple clients at once (at leasy on Firefox (latest).
Symptom: When trying to open a second connection to turtle server, tab immediately closes (yet a second webword process runs in the background!).
2) I've noticed a potential security flaw: Closing the client using the client's "close window" button does not clear the browser tab (or canvas). It should. Or else sensitive data may be visible.

Best regards.
Oblivion

Github page: https://github.com/ismail-yilmaz
upp-components: https://github.com/ismail-yilmaz/upp-components
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

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[Message index]

		A terminal emulator widget for U++ By: Oblivion on Sat, 23 March 2019 22:31
		Re: A terminal emulator widget for U++ By: koldo on Sun, 24 March 2019 16:15
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 26 March 2019 10:02
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 26 March 2019 13:11
		Re: A terminal emulator widget for U++ By: koldo on Tue, 26 March 2019 13:21
		Re: A terminal emulator widget for U++ By: Novo on Wed, 27 March 2019 23:14
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 28 March 2019 08:01
		Re: A terminal emulator widget for U++ By: Novo on Thu, 28 March 2019 16:57
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 28 March 2019 19:21
		Re: A terminal emulator widget for U++ By: Oblivion on Mon, 08 April 2019 11:45
		Re: A terminal emulator widget for U++ By: Xemuth on Mon, 13 May 2019 13:47
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 14 May 2019 09:57
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 08 June 2019 16:48
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 13 July 2019 17:35
		Re: A terminal emulator widget for U++ By: Xemuth on Tue, 16 July 2019 09:34
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 20 July 2019 15:33
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 21 July 2019 21:15
		Re: A terminal emulator widget for U++ By: Oblivion on Mon, 22 July 2019 15:56
		Re: A terminal emulator widget for U++ By: Oblivion on Wed, 24 July 2019 13:24
		Re: A terminal emulator widget for U++ By: koldo on Fri, 26 July 2019 08:18
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 27 July 2019 11:30
		Re: A terminal emulator widget for U++ By: Oblivion on Mon, 29 July 2019 23:23
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 02 August 2019 13:54
		Re: A terminal emulator widget for U++ By: Oblivion on Wed, 07 August 2019 21:24
		Re: A terminal emulator widget for U++ By: Oblivion on Mon, 12 August 2019 11:39
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 16 August 2019 14:29
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 22 September 2019 12:01
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 28 September 2019 22:00
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 03 November 2019 15:03
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 10 November 2019 21:49
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 12 November 2019 16:36
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 12 November 2019 20:08
		Re: A terminal emulator widget for U++ By: Oblivion on Wed, 25 March 2020 14:20
		Re: A terminal emulator widget for U++ By: deep on Wed, 25 March 2020 19:12
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 26 March 2020 16:54
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 10 April 2020 02:17
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 11 April 2020 00:30
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 17 April 2020 22:30
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 21 April 2020 18:35
		Re: A terminal emulator widget for U++ By: Oblivion on Wed, 22 April 2020 18:51
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 25 April 2020 00:36
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 15 May 2020 18:01
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 17 May 2020 22:20
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 22 May 2020 16:08
		Re: A terminal emulator widget for U++ By: slashupp on Thu, 28 May 2020 08:30
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 28 May 2020 11:36
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 29 May 2020 12:40
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 06 June 2020 13:57
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 09 June 2020 23:48
		Re: A terminal emulator widget for U++ By: Zbych on Thu, 11 June 2020 00:13
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 11 June 2020 11:08
		Re: A terminal emulator widget for U++ By: Zbych on Sun, 21 June 2020 22:16
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 21 June 2020 22:36
		Re: A terminal emulator widget for U++ By: Zbych on Sun, 21 June 2020 22:47
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 21 June 2020 22:54
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 25 June 2020 08:36
		Re: A terminal emulator widget for U++ By: Zbych on Thu, 25 June 2020 20:40
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 28 June 2020 11:57
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 18 June 2020 00:36
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 21 June 2020 19:35
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 05 July 2020 17:40
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 14 July 2020 14:44
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 01 August 2020 20:48
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 21 August 2020 13:29
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 05 September 2020 16:45
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 01 October 2020 18:11
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 13 October 2020 12:41
		Re: A terminal emulator widget for U++ By: Klugier on Tue, 13 October 2020 20:41
		Re: A terminal emulator widget for U++ By: hongnod on Thu, 03 December 2020 15:05
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 03 December 2020 16:25
		Re: A terminal emulator widget for U++ By: hongnod on Fri, 04 December 2020 06:58
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 05 December 2020 16:21
		Re: A terminal emulator widget for U++ By: Oblivion on Wed, 09 December 2020 00:54
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 23 January 2021 01:25
		Re: A terminal emulator widget for U++ By: Oblivion on Mon, 01 February 2021 21:18
		Re: A terminal emulator widget for U++ By: Oblivion on Wed, 03 February 2021 17:12
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 12 February 2021 17:42
		Re: A terminal emulator widget for U++ By: Klugier on Fri, 12 February 2021 21:58
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 12 February 2021 22:26
		Re: A terminal emulator widget for U++ By: Klugier on Fri, 12 February 2021 23:00
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 12 February 2021 23:14
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 23 February 2021 22:57
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 27 February 2021 22:07
		Re: A terminal emulator widget for U++ By: Oblivion on Mon, 01 March 2021 23:49
		Re: A terminal emulator widget for U++ By: Oblivion on Wed, 03 March 2021 20:45
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 07 March 2021 14:42
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 01 May 2021 14:17
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 25 May 2021 13:00
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 27 May 2021 20:39
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 29 May 2021 18:08
		Re: A terminal emulator widget for U++ By: Novo on Tue, 15 June 2021 16:41
		Re: A terminal emulator widget for U++ By: Klugier on Fri, 26 November 2021 23:19
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 27 November 2021 07:51
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 27 November 2021 10:47
		Re: A terminal emulator widget for U++ By: slashupp on Tue, 21 December 2021 07:39
		Re: A terminal emulator widget for U++ By: Oblivion on Tue, 21 December 2021 09:40
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 12 February 2022 19:16
		Re: A terminal emulator widget for U++ By: jjacksonRIAB on Fri, 20 May 2022 11:48
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 20 May 2022 23:24
		Re: A terminal emulator widget for U++ By: jjacksonRIAB on Fri, 20 May 2022 23:33
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 21 May 2022 00:00
		Re: A terminal emulator widget for U++ By: jjacksonRIAB on Sat, 21 May 2022 06:23
		Re: A terminal emulator widget for U++ By: jjacksonRIAB on Fri, 20 May 2022 13:53
		Compile problem on WIN10 By: peterh on Tue, 13 September 2022 15:15
		Re: Compile problem on WIN10 By: Oblivion on Tue, 13 September 2022 21:39
		Re: Compile problem on WIN10 By: peterh on Wed, 14 September 2022 03:48
		Re: Compile problem on WIN10 By: Oblivion on Thu, 15 September 2022 00:31
		Re: Compile problem on WIN10 By: peterh on Thu, 15 September 2022 06:54
		Re: Compile problem on WIN10 By: Oblivion on Thu, 15 September 2022 07:14
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 15 September 2022 07:25
		Re: A terminal emulator widget for U++ By: peterh on Thu, 15 September 2022 07:58
		Re: A terminal emulator widget for U++ By: peterh on Thu, 15 September 2022 09:03
		Re: A terminal emulator widget for U++ By: Oblivion on Thu, 15 September 2022 19:09
		Re: A terminal emulator widget for U++ By: peterh on Fri, 16 September 2022 06:10
		Re: A terminal emulator widget for U++ By: peterh on Fri, 16 September 2022 07:41
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 17 September 2022 18:40
		Re: A terminal emulator widget for U++ By: peterh on Sat, 17 September 2022 20:58
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 20 November 2022 21:11
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 31 December 2022 11:19
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 20 May 2023 17:15
		Re: A terminal emulator widget for U++ By: Oblivion on Sun, 17 December 2023 15:04
		Re: A terminal emulator widget for U++ By: Oblivion on Fri, 22 December 2023 00:23
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 06 January 2024 21:45
		Re: A terminal emulator widget for U++ By: Oblivion on Sat, 13 April 2024 10:42

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