multithreading - C++ multi threaded scheduling application issues -


background

i maintaining windows mfc c++ multi threaded job scheduling application. users schedule tasks run local computer. inactive users automatically transfer tasks active users.

issues

some jobs failing run. same jobs, not same jobs. there 2 jobs fail. have varying expected run times. both scheduled run on non-overlapping time intervals 1 another.

method creating processes:

the location of job fed following function:

 int virtualgriddriver::runapplicationasprocesswithexitcode(cstring cmdline)  {     process_information processinformation = {0};     startupinfo startupinfo                = {0};     startupinfo.cb                         = sizeof(startupinfo);     int nstrbuffer                         = cmdline.getlength() + 50;      //create process     bool result = createprocess(null, cmdline.getbuffer(nstrbuffer),                                  null, null, false,                                  normal_priority_class | create_no_window,                                  null, null, &startupinfo, &processinformation);     cmdline.releasebuffer();       if (!result)     {       //createprocess() failed       //get error system        lpvoid lpmsgbuf;        dword dw = getlasterror();        formatmessage(format_message_allocate_buffer | format_message_from_system | format_message_ignore_inserts,                       null, dw, makelangid(lang_neutral, sublang_default), (lptstr) &lpmsgbuf, 0, null);        //display error        cstring strerror = (lptstr) lpmsgbuf;        //free resources created system        localfree(lpmsgbuf);        //we failed.        return 1;     }     else     {       //successfully created process.  wait finish.        waitforsingleobject( processinformation.hprocess, infinite );        dword b;        getexitcodeprocess (processinformation.hprocess, &b);        //close handles.        closehandle( processinformation.hprocess );        closehandle( processinformation.hthread );         int ret = int(b);        //we succeeded.        return ret;     }  }

the failed jobs return exit code 1. can identify possible issues? if not, can provide issues may consider looking more into? multithreaded issue?


Comments

Post a Comment

Popular posts from this blog

Redirect to a HTTPS version using .htaccess -

i need modify .htaccess file redirect urls https version without "www". http://example.com --> https://example.com http://www.example.com --> https://example.com https://www.example.com --> https://example.com this how .htaccess file looks like: rewriteengine on rewritecond %{request_filename} !-d rewritecond %{request_filename} !-f rewriterule ^(.*)$ redirect.php?id=$1&page=$2 [qsa,l] what modifications need make .htaccess in order forward https without "www"? it depends on doing current code. looks file called redirect trying display php page seo friendly url. think might confusing people. anyway, need , force https without www, need 1 more rule above. also second rule needs two capture groups in rewriterule test string because wanting 2 different values using $1 , $2 references. rewriteengine on #rediect www non www and/or http https --- combinations. rewritecond %{http_host} !^example\.com [nc,or] rewritecond %{https} !^...
Read more

Unlimited choices in BASH case statement -

consider simple bash snippet: case $option in 1) image=${options[0]%.tar} ;; 2) image=${options[1]%.tar} ;; 3) image=${options[2]%.tar} ;; 4) image=${options[3]%.tar} ;; *) echo "invalid option" exit 1 esac in real script numbers goes 30. makes pretty long. can somehow specify cases variable? something this: case $option in $i) image=${options[$(($i-1))]%.tar} any pointer appreciated. you can match against multiple patterns in single clause: case $option in 1|2|3: echo "$option one, 2 or three" ;; esac if still typing you, can use simple pattern matching: case $option in # following matches # - single-digit numbers 0-9 # - two-digit numbers starting either 1 or 2 # - number 30 [0-9]|[12][0-9]|30) image=${options[$(($option-1))]%.tar} ;; *) echo "invalid option" 1>&2 exit 1 esac
Read more

javascript - jQuery: Add class depending on URL in the best way -

i have html progress meter: <div class="col-md-3" style="margin-left: -20px;"> <div class="progress-pos active" id="progess-1"> <div class="progress-pos-inner"> login </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-2"> <div class="progress-pos-inner"> scan items </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-3"> <div class="progress-pos-inner"> confirm address </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-4"> <div class="progress-pos-in...
Read more