Mercurial > hg > CbC > CbC_gcc

comparison libbacktrace/allocfail.sh @ 145:1830386684a0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents
children
comparison
equal deleted inserted replaced
131:84e7813d76e9 145:1830386684a0
1 #!/bin/sh
2
3 # allocfail.sh -- Test for libbacktrace library.
4 # Copyright (C) 2018-2020 Free Software Foundation, Inc.
5
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions are
8 # met:
9
10 # (1) Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12
13 # (2) Redistributions in binary form must reproduce the above copyright
14 # notice, this list of conditions and the following disclaimer in
15 # the documentation and/or other materials provided with the
16 # distribution.
17
18 # (3) The name of the author may not be used to
19 # endorse or promote products derived from this software without
20 # specific prior written permission.
21
22 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25 # DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
26 # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
31 # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 # POSSIBILITY OF SUCH DAMAGE.
33
34 set -e
35
36 if [ ! -f ./allocfail ]; then
37 # Hard failure.
38 exit 99
39 fi
40
41 allocs=$(./allocfail 2>&1)
42 if [ "$allocs" = "" ]; then
43 # Hard failure.
44 exit 99
45 fi
46
47 # This generates the following output:
48 # ...
49 # $ allocfail.sh
50 # allocs: 80495
51 # Status changed to 0 at 1
52 # Status changed to 1 at 3
53 # Status changed to 0 at 11
54 # Status changed to 1 at 12
55 # Status changed to 0 at 845
56 # ...
57 #
58 # We have status 0 for an allocation failure at:
59 # - 1 because backtrace_create_state handles failure robustly
60 # - 2 because the fail switches backtrace_full to !can_alloc mode.
61 # - 11 because failure of elf_open_debugfile_by_buildid does not generate an
62 # error callback beyond the one for the allocation failure itself.
63
64 echo "allocs: $allocs"
65
66 step=1
67 i=1
68 passes=0
69 prev_status=-1
70 while [ $i -le $allocs ]; do
71 if ./allocfail $i >/dev/null 2>&1; status=$?; then
72 true
73 fi
74 if [ $status -gt 1 ]; then
75 echo "Unallowed fail found: $i"
76 # Failure.
77 exit 1
78 fi
79
80 # The test-case would run too long if we would excercise all allocs.
81 # So, run with step 1 initially, and increase the step once we have 10
82 # subsequent passes, and drop back to step 1 once we encounter another
83 # failure. This takes ~2.6 seconds on an i7-6600U CPU @ 2.60GHz.
84 if [ $status -eq 0 ]; then
85 passes=$(($passes + 1))
86 if [ $passes -ge 10 ]; then
87 step=$((step * 10))
88 passes=0
89 fi
90 elif [ $status -eq 1 ]; then
91 passes=0
92 step=1
93 fi
94
95 if [ $status -ne $prev_status ]; then
96 echo "Status changed to $status at $i"
97 fi
98 prev_status=$status
99
100 i=$(($i + $step))
101 done
102
103 # Success.
104 exit 0