| #!/bin/sh |
| |
| # allocfail.sh -- Test for libbacktrace library. |
| # Copyright (C) 2018-2020 Free Software Foundation, Inc. |
| |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| |
| # (1) Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| |
| # (2) Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in |
| # the documentation and/or other materials provided with the |
| # distribution. |
| |
| # (3) The name of the author may not be used to |
| # endorse or promote products derived from this software without |
| # specific prior written permission. |
| |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| # DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
| # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| |
| set -e |
| |
| if [ ! -f ./allocfail ]; then |
| # Hard failure. |
| exit 99 |
| fi |
| |
| allocs=$(./allocfail 2>&1) |
| if [ "$allocs" = "" ]; then |
| # Hard failure. |
| exit 99 |
| fi |
| |
| # This generates the following output: |
| # ... |
| # $ allocfail.sh |
| # allocs: 80495 |
| # Status changed to 0 at 1 |
| # Status changed to 1 at 3 |
| # Status changed to 0 at 11 |
| # Status changed to 1 at 12 |
| # Status changed to 0 at 845 |
| # ... |
| # |
| # We have status 0 for an allocation failure at: |
| # - 1 because backtrace_create_state handles failure robustly |
| # - 2 because the fail switches backtrace_full to !can_alloc mode. |
| # - 11 because failure of elf_open_debugfile_by_buildid does not generate an |
| # error callback beyond the one for the allocation failure itself. |
| |
| echo "allocs: $allocs" |
| |
| step=1 |
| i=1 |
| passes=0 |
| prev_status=-1 |
| while [ $i -le $allocs ]; do |
| if ./allocfail $i >/dev/null 2>&1; status=$?; then |
| true |
| fi |
| if [ $status -gt 1 ]; then |
| echo "Unallowed fail found: $i" |
| # Failure. |
| exit 1 |
| fi |
| |
| # The test-case would run too long if we would excercise all allocs. |
| # So, run with step 1 initially, and increase the step once we have 10 |
| # subsequent passes, and drop back to step 1 once we encounter another |
| # failure. This takes ~2.6 seconds on an i7-6600U CPU @ 2.60GHz. |
| if [ $status -eq 0 ]; then |
| passes=$(($passes + 1)) |
| if [ $passes -ge 10 ]; then |
| step=$((step * 10)) |
| passes=0 |
| fi |
| elif [ $status -eq 1 ]; then |
| passes=0 |
| step=1 |
| fi |
| |
| if [ $status -ne $prev_status ]; then |
| echo "Status changed to $status at $i" |
| fi |
| prev_status=$status |
| |
| i=$(($i + $step)) |
| done |
| |
| # Success. |
| exit 0 |