No, there is nothing more that you have to do with it in order to make sure that it blocks the next time that it encounters the sem_wait, and runs the next time that the sem_t is posted.
On Thursday 07 August 2003 13:44, Dale Kingston wrote: > Ok I read through the threads chapter (very nice book btw). Now just > correct me if I miss understood. I would make a sem_t web_counter; then > inside the handler for the webserver I add the sem_wait(&web_counter); then > in game loop unix when I want that thread to run I would > sem_post(&web_counter); That will allow that thread to run yes? > > Now will that run once, and then sit and wait to be posted again? Or would > I have to have the handler do something to make sure next time it goes to > loop it waits till it's posted? > > > ----- Original Message ----- > From: "Yun Zhou" <[EMAIL PROTECTED]> > To: "Dale Kingston" <[EMAIL PROTECTED]> > Cc: <[email protected]> > Sent: Thursday, August 07, 2003 11:46 AM > Subject: Re: Threads question > > > The following is not just a tutorial, but rather, an entire book > > (completely > > > free of charge, avaliable online in HTML): > > > > http://www.newriders.com/books/opl/ebooks/0735710430.html > > > > Look in chapter 4. It has all the information about threads that you'll > > need > > > to know :) > > > > On Thursday 07 August 2003 12:13, Dale Kingston wrote: > > > Ok now the tutorials that I could find, they both said that they > > wouldn't > > > > covert semaphore or metaphore(I think thats what it was called) You > > think > > > > you could give me a little example of how I would do that? > > > > > > > > > ----- Original Message ----- > > > From: "Yun Zhou" <[EMAIL PROTECTED]> > > > To: "Dale Kingston" <[EMAIL PROTECTED]> > > > Cc: <[email protected]> > > > Sent: Thursday, August 07, 2003 11:15 AM > > > Subject: Re: Threads question > > > > > > > Your plan is workable, but boolean vairables are not commonly used > > when > > > > > it comes to syncing threads. > > > > > > > > This is where the semaphore(include pthread and semaphore.h, link > > > > with -lpthread) comes into play. When game_loop_unix finishes a loop, > > > > make > > it > > > > > update a global data structure with all the data that the webserver > > needs > > > > to > > > > > > > know, then posts a semaphore, unblocking the webserver loop. > > > > > > > > On Thursday 07 August 2003 11:42, Dale Kingston wrote: > > > > > Ok I've been wanting to do this for sometimes but I haven't known > > how > > > > > > to > > > > > > do > > > > > > > > it. And then with the resent mention of threads I figured this > > > > > might > > be > > > > how > > > > > > > > I could do it. I have a web server attached with the mud. You can > > see a > > > > lot > > > > > > > > with it, skills, spells, Pcstores, can login write notes, and see > > who's > > > > > > online. Well for sometimes I've been wanting this in it's own > > process > > > > > > or thread. So I read some of the tutorials on how to use threads > > > > > and I'm > > > > > > still > > > > > > > > a little confused at how I could use 1 thread to run the web server > > > > > > rather > > > > > > > > then a thread per request. Here's my idea tell me if I'm total > > > > > wrong > > > > > > with > > > > > > > > my thinking. > > > > > > > > > > > > > > > > > > > > In game_loop_unix I have it called handle_webserver, and so that > > runs > > > > with > > > > > > > > each game loop which I would still like to preserver, so what I was > > > > > thinking. Is make the thread for the handle_webserver at the end of > > our > > > > > > init_web server. Then make a two global bools for when it's to run > > it's > > > > > > update, and then like a web_down bool. Then do like game loop unix > > and > > > > have > > > > > > > > the handle do a while (!web_down) And then inside that have the > > other > > > > bool > > > > > > > > be like if (!update_web){continue;) then in the game loop unix have > > it > > > > flag > > > > > > > > that bool true each time it runs throung. And at the end of the > > > > > > handle_web > > > > > > > > have it flag it false. > > > > > > > > > > > > > > > > > > > > Would that work how I'm thinking where it would keep it in it's own > > > > > > thread. > > > > > > > > And that thread would process all the web server information? Or am > > I > > > > like > > > > > > > > total screwed up on my logic of how to have it work? > > > > -- > > ROM mailing list > > [email protected] > > http://www.rom.org/cgi-bin/mailman/listinfo/rom
