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4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
129 lines
3.7 KiB
Plaintext
129 lines
3.7 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# Copyright 2009-2022 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 <http://www.gnu.org/licenses/>.
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# Check that watchpoints get propagated to all existing threads when the
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# watchpoint is created.
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set NR_THREADS 4
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set X_INCR_COUNT 10
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# This test verifies that a watchpoint is detected in the proper thread
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# so the test is only meaningful on a system with hardware watchpoints.
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if {[skip_hw_watchpoint_tests]} {
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return 0
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}
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standard_testfile
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "additional_flags=-DNR_THREADS=$NR_THREADS -DX_INCR_COUNT=$X_INCR_COUNT"]] != "" } {
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return -1
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}
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clean_restart ${binfile}
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gdb_test_no_output "set can-use-hw-watchpoints 1" ""
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#
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# Run to `main' where we begin our tests.
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#
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if ![runto_main] then {
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return 0
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}
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gdb_test "break thread_started" \
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"Breakpoint 2 at .*: file .*${srcfile}, line .*" \
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"breakpoint on thread_started"
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# Run the program until all threads have hit thread_started.
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# We use this as the vehicle to determine when gdb is aware
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# of all threads (i.e. "info threads" would show all threads).
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set nr_started 0
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set message "run to thread_started"
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for { set i 0 } { $i < $NR_THREADS } { incr i } {
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gdb_test_multiple "continue" $message {
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-re ".*Breakpoint 2, thread_started ().*$gdb_prompt $" {
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incr nr_started
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}
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timeout {
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set i $NR_THREADS
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}
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}
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}
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if { $nr_started == $NR_THREADS } {
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pass "all threads started"
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} else {
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fail "all threads started"
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# No point in continuing.
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return -1
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}
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# Watch X, it will be modified by all threads.
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# We want this watchpoint to be set *after* all threads are running.
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gdb_test "watch x" "Hardware watchpoint 3: x"
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# Now that the watchpoint is set, we can let the threads increment X.
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gdb_test_no_output "set var test_ready = 1"
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# While debugging.
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#gdb_test_no_output "set debug infrun 1"
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set x_inc_line [gdb_get_line_number "X increment"]
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set x_thread_loc "thread_function \\\(arg=.*\\\) at .*watchthreads.c:$x_inc_line"
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# X is incremented under a mutex, so we should get NR_THREADS * X_INCR_COUNT
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# hits.
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set limit [expr $NR_THREADS*$X_INCR_COUNT]
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set x_count 0
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set done 0
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set message "x watch loop"
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for {set i 0} {!$done && $i < $limit} {incr i} {
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set test_flag 0
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gdb_test_multiple "continue" $message {
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-re "(.*Hardware watchpoint.*)$gdb_prompt $" {
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set string $expect_out(1,string)
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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" $string] {
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incr x_count
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set test_flag 1
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} else {
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# We test for new value = old value + 1 each iteration.
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# This can fail due to gdb/10116.
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# This is caught after the loop exits.
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}
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}
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-re "The program is not being run.*$gdb_prompt $" {
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fail "$message (program terminated)"
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}
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}
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# If we fail above, don't bother continuing loop.
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if { $test_flag == 0 } {
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set done 1
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}
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}
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if { $i == $limit } {
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pass "all threads incremented x"
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} else {
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kfail "gdb/10116" "gdb can drop watchpoints in multithreaded app"
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}
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