[RFA]: New test for gdb.threads testsuite

[Michael Snyder]

Jeff Johnston wrote:
> The attached testcase tests the new code added recently by Daniel.
> 
> Ok to commit?
> 
> -- Jeff J.
> 
> 2004-03-29  Jeff Johnston  <jjohnstn@redhat.com>
>             Daniel Jacobowitz  <drow@mvista.com>
> 
>         * gdb.threads/manythreads.c: New testcase.
>         * gdb.threads/manythreads.exp: Ditto.

Looks good to me, Jeff.  Please check it in.
Michael

> ------------------------------------------------------------------------
> 
> #include <pthread.h>
> #include <stdio.h>
> 
> void *
> thread_function (void *arg)
> {
>   int x = (int)arg;
> 
>   printf ("Thread <%d> executing\n", x);
> 
>   return NULL;
> }
> 
> int 
> main (int argc, char **argv)
> {
>   pthread_attr_t attr;
>   pthread_t threads[256];
>   int i, j;
> 
>   pthread_attr_init (&attr);
> 
>   /* Create a ton of quick-executing threads, then wait for them to
>      complete.  */
>   for (i = 0; i < 1000; ++i) 
>     {
>       for (j = 0; j < 256; ++j)
> 	{
> 	  pthread_create (&threads[j], &attr, thread_function, 
> 			  (void *)(i * 1000 + j));
> 	}
> 
>       for (j = 0; j < 256; ++j)
> 	{
> 	  pthread_join (threads[j], NULL);
> 	}
>     }
> 
>   pthread_attr_destroy (&attr);
> 
>   return 0;
> }
> 
> 
> ------------------------------------------------------------------------
> 
> # manythreads.exp -- Expect script to test stopping many threads
> # Copyright (C) 2004 Free Software Foundation, Inc.
> 
> # This program is free software; you can redistribute it and/or modify
> # it under the terms of the GNU General Public License as published by
> # the Free Software Foundation; either version 2 of the License, or
> # (at your option) any later version.
> # 
> # This program is distributed in the hope that it will be useful,
> # but WITHOUT ANY WARRANTY; without even the implied warranty of
> # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> # GNU General Public License for more details.
> # 
> # You should have received a copy of the GNU General Public License
> # along with this program; if not, write to the Free Software
> # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
> 
> # Please email any bugs, comments, and/or additions to this file to:
> # bug-gdb@prep.ai.mit.edu
> 
> # This file was written by Jeff Johnston. (jjohnstn@redhat.com)
> 
> if $tracelevel then {
> 	strace $tracelevel
> }
> 
> set prms_id 0
> set bug_id 0
> 
> set testfile "manythreads"
> set srcfile ${testfile}.c
> set binfile ${objdir}/${subdir}/${testfile}
> 
> if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } {
>     return -1
> }
> 
> gdb_start
> gdb_reinitialize_dir $srcdir/$subdir
> gdb_load ${binfile}
> gdb_test "set print sevenbit-strings" ""
> runto_main
> 
> # We'll need this when we send_gdb a ^C to GDB.  Need to do it before we
> # run the program and gdb starts saving and restoring tty states.
> # On Ultrix, we don't need it and it is really slow (because shell_escape
> # doesn't use vfork).
> if ![istarget "*-*-ultrix*"] then {
>     gdb_test "shell stty intr '^C'" ""
> }
> 
> set message "first continue"
> gdb_test_multiple "continue" "first continue" {
>   -re "error:.*$gdb_prompt $" {
>     fail "$message"
>   }
>   -re "Continuing" {
>     pass "$message"
>   }
> }
> 
> # Send a Ctrl-C and verify that we can do info threads and continue
> after 1000 {send_gdb "\003"}
> set message "stop threads 1"
> gdb_test_multiple "" "stop threads 1" {
>   -re "\\\[New \[^\]\]*\\\]\r\n" {
>     exp_continue
>   }
>   -re "\\\[\[^\]\]* exited\\\]\r\n" {
>     exp_continue
>   }
>   -re "Thread \[^\n\]* executing\r\n" {
>     exp_continue
>   }
>   -re "Program received signal SIGINT.*$gdb_prompt $" {
>     pass "$message"
>   }
>   timeout {
>     fail "$message (timeout)"
>   }
> }
> 
> gdb_test "info threads" ".*1 Thread.*.LWP.*"
> 
> set message "second continue"
> gdb_test_multiple "continue" "second continue" {
>   -re "error:.*$gdb_prompt $" {
>     fail "$message"
>   }
>   -re "Continuing" {
>     pass "$message"
>   }
> }
> 
> # Send another Ctrl-C and verify that we can do info threads and quit
> after 1000 {send_gdb "\003"}
> set message "stop threads 2"
> gdb_test_multiple "" "stop threads 2" {
>   -re "\\\[New \[^\]\]*\\\]\r\n" {
>     exp_continue
>   }
>   -re "\\\[\[^\]\]* exited\\\]\r\n" {
>     exp_continue
>   }
>   -re "Thread \[^\n\]* executing\r\n" {
>     exp_continue
>   }
>   -re "Program received signal SIGINT.*$gdb_prompt $" {
>     pass "stop threads 2"
>   }
> } 
> 
> gdb_test_multiple "quit" "GDB exits after stopping multithreaded program" {
>     -re "The program is running.  Exit anyway\\? \\(y or n\\) $" {
> 	send_gdb "y\n"
> 	exp_continue
>     }
>     eof {
>         pass "GDB exits after stopping multithreaded program"
>     }
>     timeout {
>         fail "GDB exits after stopping multithreaded program (timeout)"
>     }
> }
>