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25cb2044 JR |
1 | #!/bin/bash |
2 | # | |
3 | # Copyright (C) 2020 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com> | |
4 | # | |
5 | # SPDX-License-Identifier: LGPL-2.1-only | |
6 | ||
7 | GENERATOR_CURDIR=$(dirname "$0")/ | |
8 | GENERATOR_TESTDIR=$GENERATOR_CURDIR/../../../ | |
9 | TESTAPP_PATH=${TESTAPP_PATH:-"$GENERATOR_TESTDIR/utils/testapp"} | |
10 | ||
11 | SYSCALL_TESTAPP_NAME=${SYSCALL_TESTAPP_NAME:-"gen-syscall-events"} | |
12 | SYSCALL_TESTAPP_BIN=${SYSCALL_TESTAPP_BIN:-"$TESTAPP_PATH/$SYSCALL_TESTAPP_NAME/$SYSCALL_TESTAPP_NAME"} | |
13 | ||
14 | USERSPACE_PROBE_ELF_TESTAPP_NAME=${USERSPACE_PROBE_ELF_TESTAPP_NAME:-"userspace-probe-elf-binary"} | |
15 | USERSPACE_PROBE_ELF_TESTAPP_BIN=${USERSPACE_PROBE_ELF_TESTAPP_BIN:-"$TESTAPP_PATH/$USERSPACE_PROBE_ELF_TESTAPP_NAME/.libs/$USERSPACE_PROBE_ELF_TESTAPP_NAME"} | |
16 | ||
17 | function generate_filter_events | |
18 | { | |
19 | local nr=$1 | |
20 | /bin/echo -n "$nr" > /proc/lttng-test-filter-event 2> /dev/null | |
21 | } | |
22 | ||
23 | function generate_syscalls | |
24 | { | |
25 | local nr=$1 | |
26 | shift | |
27 | ||
28 | for i in $(seq 1 "$nr"); do | |
29 | # Pass /dev/null so to generate the syscall right away. | |
30 | $SYSCALL_TESTAPP_BIN /dev/null "$@" | |
31 | done | |
32 | } | |
33 | ||
34 | function userspace_probe_testapp | |
35 | { | |
36 | local nr=$1 | |
37 | shift | |
38 | ||
39 | for i in $(seq 1 "$nr"); do | |
6b979fc6 JG |
40 | # This userspace probe test has to instrument the actual elf |
41 | # binary and not the generated libtool wrapper. However, we | |
42 | # can't invoke the wrapper either since it will re-link the test | |
43 | # application binary on its first invocation, resulting in a new | |
44 | # binary with an 'lt-*' prefix under the .libs folder. The | |
45 | # relinking stage adds the .libs folder to the 'lt-*' binary's | |
46 | # rpath. | |
47 | # | |
48 | # To ensure the binary (inode) that instrumented is the same as | |
49 | # what is running, set LD_LIBRARY_PATH to find the .libs folder | |
50 | # that contains the libfoo.so library and invoke the binary | |
51 | # directly. | |
52 | LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$TESTDIR/utils/testapp/userspace-probe-elf-binary/.libs" $USERSPACE_PROBE_ELF_TESTAPP_BIN "$@" | |
25cb2044 JR |
53 | done |
54 | } | |
55 | ||
56 | function ust_event_generator_toggle_state | |
57 | { | |
58 | ust_event_generator_suspended=$((ust_event_generator_suspended==0)) | |
59 | } | |
60 | ||
61 | function generator_quit | |
62 | { | |
63 | generator_quit=0 | |
64 | } | |
65 | ||
66 | # Note: Only one generator can be used at a time per domain type | |
67 | function ust_event_generator_run_once_per_transition | |
68 | { | |
69 | # Used by the signal trap | |
70 | ust_event_generator_suspended=0 | |
71 | # Used by the signal trap for SIGUSR2 to end the generator | |
72 | generator_quit=1 | |
73 | ||
74 | local test_app=$1 | |
75 | local state_file=$2 | |
76 | local nr_iter=$3 | |
77 | local nr_usec_wait=$4 | |
78 | local run=false | |
79 | ||
80 | # Pass any of the remaining arguments to the generator. | |
81 | shift 4 | |
82 | ||
83 | trap ust_event_generator_toggle_state SIGUSR1 | |
84 | trap generator_quit SIGUSR2 | |
85 | ||
86 | while [ $generator_quit -ne 0 ]; do | |
87 | if [[ $ust_event_generator_suspended -eq "1" ]]; then | |
88 | touch "$state_file" | |
89 | # Reset the "run" state | |
90 | run=true | |
91 | sleep 0.5 | |
92 | elif [ "$run" = true ]; then | |
93 | taskset -c 0 "$test_app" -i "$nr_iter" -w "$nr_usec_wait" "$@"> /dev/null 2>&1 | |
94 | run=false; | |
95 | if [[ -f $state_file ]]; then | |
96 | rm -rf "$state_file" 2> /dev/null | |
97 | fi | |
98 | else | |
99 | # Wait for a "suspend" to reset the run state | |
100 | sleep 0.1 | |
101 | fi | |
102 | done | |
103 | } | |
104 | ||
105 | # Note: Only one generator can be used at a time per domain type | |
106 | function ust_event_generator | |
107 | { | |
108 | # Used by the signal trap | |
109 | ust_event_generator_suspended=0 | |
110 | # Used by the signal trap for SIGUSR2 to end the generator | |
111 | generator_quit=1 | |
112 | ||
113 | local test_app=$1 | |
114 | local state_file=$2 | |
115 | local nr_iter=1000 | |
116 | local nr_usec_wait=5 | |
117 | ||
118 | # Pass any of the remaining arguments to the generator. | |
119 | shift 2 | |
120 | ||
121 | trap ust_event_generator_toggle_state SIGUSR1 | |
122 | trap generator_quit SIGUSR2 | |
123 | ||
124 | while [ $generator_quit -ne 0 ]; do | |
125 | if [[ $ust_event_generator_suspended -eq "1" ]]; then | |
126 | touch "$state_file" | |
127 | # Reset the "run" state | |
128 | sleep 0.5 | |
129 | else | |
130 | taskset -c 0 "$test_app" -i $nr_iter -w $nr_usec_wait "$@" > /dev/null 2>&1 | |
131 | if [[ -f $state_file ]]; then | |
132 | rm -rf "$state_file" 2> /dev/null | |
133 | fi | |
134 | fi | |
135 | done | |
136 | } | |
137 | ||
138 | function kernel_event_generator_toggle_state | |
139 | { | |
140 | kernel_event_generator_suspended=$((kernel_event_generator_suspended==0)) | |
141 | } | |
142 | ||
143 | function kernel_event_generator_run_once_per_transition | |
144 | { | |
145 | # Used by the signal trap | |
146 | kernel_event_generator_suspended=0 | |
147 | # Used by the signal trap for SIGUSR2 to end the generator | |
148 | generator_quit=1 | |
149 | ||
150 | local generator=$1 | |
151 | local state_file=$2 | |
152 | local nr_iter=$3 | |
153 | ||
154 | # Pass any of the remaining arguments to the generator. | |
155 | shift 3 | |
156 | ||
157 | local run=false | |
158 | trap kernel_event_generator_toggle_state SIGUSR1 | |
159 | trap generator_quit SIGUSR2 | |
160 | ||
161 | while [ $generator_quit -ne 0 ]; do | |
162 | if [[ $kernel_event_generator_suspended -eq "1" ]]; then | |
163 | touch "$state_file" | |
164 | run=true | |
165 | sleep 0.5 | |
166 | elif [ "$run" = true ]; then | |
167 | $generator "$nr_iter" "$@" | |
168 | run=false | |
169 | if [[ -f $state_file ]]; then | |
170 | rm "$state_file" 2> /dev/null | |
171 | fi | |
172 | else | |
173 | # Wait for a "suspend" to reset the run state | |
174 | sleep 0.1 | |
175 | fi | |
176 | done | |
177 | } | |
178 | ||
179 | function kernel_event_generator | |
180 | { | |
181 | # Used by the signal trap | |
182 | kernel_event_generator_suspended=0 | |
183 | # Used by the signal trap for SIGUSR2 to end the generator | |
184 | generator_quit=1 | |
185 | ||
186 | local generator=$1 | |
187 | local state_file=$2 | |
188 | ||
189 | # Pass any of the remaining arguments to the generator. | |
190 | shift 2 | |
191 | ||
192 | trap kernel_event_generator_toggle_state SIGUSR1 | |
193 | trap generator_quit SIGUSR2 | |
194 | ||
195 | while [ $generator_quit -ne 0 ]; do | |
196 | if [[ $kernel_event_generator_suspended -eq "1" ]]; then | |
197 | touch "$state_file" | |
198 | sleep 0.5 | |
199 | else | |
200 | $generator "10" "$@" | |
201 | if [[ -f $state_file ]]; then | |
202 | rm "$state_file" 2> /dev/null | |
203 | fi | |
204 | fi | |
205 | done | |
206 | } |