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jeremybenn |
# step2.exp -- Expect script to test gdb step.c
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# Copyright (C) 1992, 1997, 2007, 2008, 2009, 2010
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# Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see .
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# This file was written by Jeff Law. (law@cygnus.com)
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#
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if $tracelevel then {
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strace $tracelevel
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}
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set program_exited 0
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# A simple and crude test to see that we can step two threads independently
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proc test_multi_threaded_stepping {} {
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global gdb_prompt
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global hex
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global srcfile
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global decimal
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# Set breakpoints in code that we know is executed in only
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# thread of control.
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gdb_test "break thread1" \
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"Break.* at $hex: file .*$srcfile, line $decimal\\."
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gdb_test "break thread2" \
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"Break.* at $hex: file .*$srcfile, line $decimal\\."
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# the order in which things happen is indeterminate. So we basically
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# look for a set of events and note that each one happens and that
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# all of the required events have happened when we're done.
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#
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# Right now we only verify that both threads start and that they
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# both call pthread_cond_wait twice.
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set thread1started 0
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set thread1condwait 0
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set thread2started 0
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set thread2condwait 0
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send_gdb "run\n"
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gdb_expect {
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-re "The program .* has been started already.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re ".*Breakpoint \[0-9\]+,.*thread1.* at .*$srcfile:.*\[\t \].*$gdb_prompt $" {
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if { $thread1started != 0 } then {
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fail "thread1 started"
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return
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} else {
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set thread1started 1
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pass "thread1 started"
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}
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send_gdb "step\n"
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exp_continue
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}
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-re ".*Breakpoint \[0-9\]+,.*thread2.* at .*$srcfile:.*\[\t \].*$gdb_prompt $" {
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if { $thread2started != 0 } then {
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fail "thread2 started"
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return
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} else {
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set thread2started 1
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pass "thread2 started"
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}
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send_gdb "step\n"
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exp_continue
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}
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-re ".*pthread_cond_wait.*cv_a.*$gdb_prompt" {
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if { $thread1started == 0 } then {
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fail "thread1 condwait"
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return
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}
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if { $thread1condwait < 2 } then {
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pass "thread1 condwait"
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incr thread1condwait
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}
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if { $thread2condwait == 2 } then {
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pass "multi threaded stepping"
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return
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}
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send_gdb "step\n"
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exp_continue
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}
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-re ".*pthread_cond_wait.*cv_b.*$gdb_prompt" {
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if { $thread2started == 0 } then {
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fail "thread2 condwait"
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return
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}
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if { $thread2condwait < 2 } then {
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pass "thread2 condwait"
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incr thread2condwait
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}
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if { $thread1condwait == 2 } then {
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pass "multi threaded stepping"
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return
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}
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send_gdb "step\n"
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exp_continue
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}
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-re "$gdb_prompt" {
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send_gdb "step\n"
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exp_continue
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}
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default { fail "multi threaded stepping" }
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}
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}
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# Check to see if we have an executable to test. If not, then either we
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# haven't tried to compile one, or the compilation failed for some reason.
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# In either case, just notify the user and skip the tests in this file.
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set binfile "step"
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set srcfile "step.c"
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if ![file exists $objdir/$subdir/$binfile] then {
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if $all_flag then {
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warning "$binfile does not exist; tests suppressed."
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}
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return
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}
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# Start with a fresh gdb.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load $objdir/$subdir/$binfile
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test_multi_threaded_stepping
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