binutils-gdb/gdb/testsuite/gdb.testsuite/gdb-caching-proc-consistency.exp
Andrew Burgess 1d506c26d9 Update copyright year range in header of all files managed by GDB
This commit is the result of the following actions:

  - Running gdb/copyright.py to update all of the copyright headers to
    include 2024,

  - Manually updating a few files the copyright.py script told me to
    update, these files had copyright headers embedded within the
    file,

  - Regenerating gdbsupport/Makefile.in to refresh it's copyright
    date,

  - Using grep to find other files that still mentioned 2023.  If
    these files were updated last year from 2022 to 2023 then I've
    updated them this year to 2024.

I'm sure I've probably missed some dates.  Feel free to fix them up as
you spot them.
2024-01-12 15:49:57 +00:00

123 lines
3.2 KiB
Text

# Copyright 2018-2024 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/>.
# When caching a proc using gdb_caching_proc, it will become less likely to
# be executed, and consequently it's going to be harder to detect that the
# proc is racy. OTOH, in general the proc is easy to rerun. So, run all
# uncached gdb_caching_procs a number of times and detect inconsistent results.
# The purpose of caching is to reduce runtime, so rerunning is somewhat
# counter-productive in that aspect, but it's better than uncached, because the
# number of reruns is constant-bounded, and the increase in runtime is bound to
# this test-case, and could be disabled on slow targets.
# Test gdb_caching_proc NAME
proc test_proc { name } {
set real_name gdb_real__$name
set resultlist [list]
with_test_prefix initial {
set first [gdb_do_cache_wrap $real_name]
}
lappend resultlist $first
# Ten repetitions was enough to trigger target_supports_scheduler_locking,
# and costs about 20 seconds on an i7-6600U.
set repeat 10
set racy 0
for {set i 0} {$i < $repeat} {incr i} {
with_test_prefix $i {
set rerun [gdb_do_cache_wrap $real_name]
}
lappend resultlist $rerun
if { $rerun != $first } {
set racy 1
}
}
if { $racy == 0 } {
pass "consistency"
} else {
fail "consistency"
verbose -log "$name: $resultlist"
}
}
# Test gdb_caching_procs in FILE
proc test_file { file } {
upvar obj obj
set procnames [list]
set fp [open $file]
while { [gets $fp line] >= 0 } {
if [regexp -- "^gdb_caching_proc \[ \t\]*(\[^ \t\]*)" $line \
match procname] {
lappend procnames $procname
}
}
close $fp
if { [llength $procnames] == 0 } {
return
}
if { [file tail $file] == "gdb.exp" } {
# Already loaded
} else {
load_lib [file tail $file]
}
foreach procname $procnames {
if { [info args $procname] != "" } {
# With args.
continue
}
with_test_prefix $procname {
switch $procname {
"is_address_zero_readable" { set setup_gdb 1 }
"target_is_gdbserver" { set setup_gdb 1 }
"supports_memtag" { set setup_gdb 1 }
"have_native_target" { set setup_gdb 1 }
default {set setup_gdb 0 }
}
if { $setup_gdb } {
clean_restart $obj
}
test_proc $procname
gdb_exit
}
}
}
# Init
set me "gdb_caching_proc"
set src { int main() { return 0; } }
if { ![gdb_simple_compile $me $src executable] } {
return 0
}
# Test gdb_caching_procs in gdb/testsuite/lib/*.exp
set files [eval glob -types f $srcdir/lib/*.exp]
set files [lsort $files]
foreach file $files {
test_file $file
}
# Cleanup
remote_file build delete $obj