8acc9f485b
Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
128 lines
3.7 KiB
Text
128 lines
3.7 KiB
Text
# This testcase is part of GDB, the GNU debugger.
|
|
|
|
# Copyright 2009-2013 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
# Check that watchpoints get propagated to all existing threads when the
|
|
# watchpoint is created.
|
|
|
|
set NR_THREADS 4
|
|
set X_INCR_COUNT 10
|
|
|
|
|
|
# This test verifies that a watchpoint is detected in the proper thread
|
|
# so the test is only meaningful on a system with hardware watchpoints.
|
|
if {[skip_hw_watchpoint_tests]} {
|
|
return 0
|
|
}
|
|
|
|
standard_testfile
|
|
if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "additional_flags=-DNR_THREADS=$NR_THREADS -DX_INCR_COUNT=$X_INCR_COUNT"]] != "" } {
|
|
return -1
|
|
}
|
|
|
|
clean_restart ${binfile}
|
|
|
|
gdb_test_no_output "set can-use-hw-watchpoints 1" ""
|
|
|
|
#
|
|
# Run to `main' where we begin our tests.
|
|
#
|
|
|
|
if ![runto_main] then {
|
|
gdb_suppress_tests
|
|
}
|
|
|
|
gdb_test "break thread_started" \
|
|
"Breakpoint 2 at .*: file .*${srcfile}, line .*" \
|
|
"breakpoint on thread_started"
|
|
|
|
# Run the program until all threads have hit thread_started.
|
|
# We use this as the vehicle to determine when gdb is aware
|
|
# of all threads (i.e. "info threads" would show all threads).
|
|
|
|
set nr_started 0
|
|
set message "run to thread_started"
|
|
for { set i 0 } { $i < $NR_THREADS } { incr i } {
|
|
gdb_test_multiple "continue" $message {
|
|
-re ".*Breakpoint 2, thread_started ().*$gdb_prompt $" {
|
|
incr nr_started
|
|
}
|
|
timeout {
|
|
set i $NR_THREADS
|
|
}
|
|
}
|
|
}
|
|
if { $nr_started == $NR_THREADS } {
|
|
pass "all threads started"
|
|
} else {
|
|
fail "all threads started"
|
|
# No point in continuing.
|
|
return -1
|
|
}
|
|
|
|
# Watch X, it will be modified by all threads.
|
|
# We want this watchpoint to be set *after* all threads are running.
|
|
gdb_test "watch x" "Hardware watchpoint 3: x"
|
|
|
|
# Now that the watchpoint is set, we can let the threads increment X.
|
|
gdb_test_no_output "set var test_ready = 1"
|
|
|
|
# While debugging.
|
|
#gdb_test_no_output "set debug infrun 1"
|
|
|
|
set x_inc_line [gdb_get_line_number "X increment"]
|
|
set x_thread_loc "thread_function \\\(arg=.*\\\) at .*watchthreads.c:$x_inc_line"
|
|
|
|
# X is incremented under a mutex, so we should get NR_THREADS * X_INCR_COUNT
|
|
# hits.
|
|
set limit [expr $NR_THREADS*$X_INCR_COUNT]
|
|
set x_count 0
|
|
set done 0
|
|
|
|
set message "x watch loop"
|
|
|
|
for {set i 0} {!$done && $i < $limit} {incr i} {
|
|
set test_flag 0
|
|
|
|
gdb_test_multiple "continue" $message {
|
|
-re "(.*Hardware watchpoint.*)$gdb_prompt $" {
|
|
set string $expect_out(1,string)
|
|
|
|
if [regexp "Hardware watchpoint 3: x\[^\r\]*\r\[^\r\]*\r\[^\r\]*Old value = $x_count\[^\r\]*\r\[^\r\]*New value = [expr $x_count+1]\r" $string] {
|
|
incr x_count
|
|
set test_flag 1
|
|
} else {
|
|
# We test for new value = old value + 1 each iteration.
|
|
# This can fail due to gdb/10116.
|
|
# This is caught after the loop exits.
|
|
}
|
|
}
|
|
-re "The program is not being run.*$gdb_prompt $" {
|
|
fail "$message (program terminated)"
|
|
}
|
|
}
|
|
|
|
# If we fail above, don't bother continuing loop.
|
|
if { $test_flag == 0 } {
|
|
set done 1
|
|
}
|
|
}
|
|
|
|
if { $i == $limit } {
|
|
pass "all threads incremented x"
|
|
} else {
|
|
kfail "gdb/10116" "gdb can drop watchpoints in multithreaded app"
|
|
}
|