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20 # or visit www.oracle.com if you need additional information or have any
21 # questions.
22 #
23
24 # @test
25 # @bug 6942989
26 # @summary Check for WeakReference leak in Logger objects
27 # @author Daniel D. Daugherty
28 #
29 # @run build LoggerWeakRefLeak
30 # @run shell/timeout=240 LoggerWeakRefLeak.sh
31
32 # The timeout is: 2 minutes for infrastructure and 1 minute for the test
33 #
34
35 if [ "${TESTJAVA}" = "" ]
36 then
37 echo "TESTJAVA not set. Test cannot execute. Failed."
38 exit 1
39 fi
40
41 if [ "${TESTSRC}" = "" ]
42 then
43 echo "TESTSRC not set. Test cannot execute. Failed."
44 exit 1
45 fi
46
47 if [ "${TESTCLASSES}" = "" ]
48 then
49 echo "TESTCLASSES not set. Test cannot execute. Failed."
50 exit 1
51 fi
52
53 JAVA="${TESTJAVA}"/bin/java
54 JMAP="${TESTJAVA}"/bin/jmap
55 JPS="${TESTJAVA}"/bin/jps
56
57 set -eu
58
59 TEST_NAME="LoggerWeakRefLeak"
60 TARGET_CLASS="java\.lang\.ref\.WeakReference"
61
62 is_cygwin=false
63 is_mks=false
64 is_windows=false
65
66 case `uname -s` in
67 CYGWIN*)
68 is_cygwin=true
69 is_windows=true
70 ;;
71 Windows_*)
72 is_mks=true
73 is_windows=true
74 ;;
75 *)
76 ;;
77 esac
78
79
80 # wrapper for grep
81 #
82 grep_cmd() {
83 set +e
84 if $is_windows; then
85 # need dos2unix to get rid of CTRL-M chars from java output
86 dos2unix | grep "$@"
87 status="$?"
88 else
89 grep "$@"
90 status="$?"
91 fi
92 set -e
93 }
94
95
96 # MAIN begins here
97 #
98
99 seconds=
100 if [ "$#" -gt 0 ]; then
101 seconds="$1"
102 fi
103
104 # see if this version of jmap supports the '-histo:live' option
105 jmap_option="-histo:live"
106 set +e
107 "${JMAP}" "$jmap_option" 0 > "$TEST_NAME.jmap" 2>&1
108 grep '^Usage: ' "$TEST_NAME.jmap" > /dev/null 2>&1
109 status="$?"
110 set -e
111 if [ "$status" = 0 ]; then
112 echo "INFO: switching jmap option from '$jmap_option'\c"
113 jmap_option="-histo"
114 echo " to '$jmap_option'."
115 fi
116
117 "${JAVA}" ${TESTVMOPTS} -classpath "${TESTCLASSES}" \
118 "$TEST_NAME" $seconds > "$TEST_NAME.log" 2>&1 &
119 test_pid="$!"
120 echo "INFO: starting $TEST_NAME as pid = $test_pid"
121
122 # wait for test program to get going
123 count=0
124 while [ "$count" -lt 30 ]; do
125 sleep 2
126 grep_cmd '^INFO: call count = 0$' < "$TEST_NAME.log" > /dev/null 2>&1
127 if [ "$status" = 0 ]; then
128 break
129 fi
130 count=`expr $count + 1`
131 done
132
133 if [ "$count" -ge 30 ]; then
134 echo "ERROR: $TEST_NAME failed to get going." >&2
135 echo "INFO: killing $test_pid"
136 kill "$test_pid"
137 exit 1
138 elif [ "$count" -gt 1 ]; then
139 echo "INFO: $TEST_NAME took $count loops to start."
140 fi
141
142 if $is_cygwin; then
143 # We need the Windows pid for jmap and not the Cygwin pid.
144 # Note: '\t' works on Cygwin, but doesn't seem to work on Solaris.
145 jmap_pid=`"${JPS}"| grep_cmd "[ \t]$TEST_NAME$" | sed 's/[ \t].*//'`
146 if [ -z "$jmap_pid" ]; then
147 echo "FAIL: jps could not map Cygwin pid to Windows pid." >&2
148 echo "INFO: killing $test_pid"
149 kill "$test_pid"
150 exit 2
151 fi
152 echo "INFO: pid = $test_pid maps to Windows pid = $jmap_pid"
153 else
154 jmap_pid="$test_pid"
155 fi
156
157 decreasing_cnt=0
158 increasing_cnt=0
159 loop_cnt=0
160 prev_instance_cnt=0
161
162 while true; do
163 # Output format for 'jmap -histo' in JDK1.5.0:
164 #
165 # <#bytes> <#instances> <class_name>
166 #
167 # Output format for 'jmap -histo:live':
168 #
169 # <num>: <#instances> <#bytes> <class_name>
170 #
171 set +e
172 "${JMAP}" "$jmap_option" "$jmap_pid" > "$TEST_NAME.jmap" 2>&1
173 status="$?"
174 set -e
175
176 if [ "$status" != 0 ]; then
177 echo "INFO: jmap exited with exit code = $status"
178 if [ "$loop_cnt" = 0 ]; then
179 echo "INFO: on the first iteration so no samples were taken."
180 echo "INFO: start of jmap output:"
181 cat "$TEST_NAME.jmap"
182 echo "INFO: end of jmap output."
183 echo "FAIL: jmap is unable to take any samples." >&2
184 echo "INFO: killing $test_pid"
185 kill "$test_pid"
186 exit 2
187 fi
188 echo "INFO: The likely reason is that $TEST_NAME has finished running."
189 break
190 fi
191
192 instance_cnt=`grep_cmd "[ ]$TARGET_CLASS$" \
193 < "$TEST_NAME.jmap" \
194 | sed '
195 # strip leading whitespace; does nothing in JDK1.5.0
196 s/^[ ][ ]*//
197 # strip <#bytes> in JDK1.5.0; does nothing otherwise
198 s/^[1-9][0-9]*[ ][ ]*//
199 # strip <num>: field; does nothing in JDK1.5.0
200 s/^[1-9][0-9]*:[ ][ ]*//
201 # strip <class_name> field
202 s/[ ].*//
203 '`
204 if [ -z "$instance_cnt" ]; then
205 echo "INFO: instance count is unexpectedly empty"
206 if [ "$loop_cnt" = 0 ]; then
207 echo "INFO: on the first iteration so no sample was found."
208 echo "INFO: There is likely a problem with the sed filter."
209 echo "INFO: start of jmap output:"
210 cat "$TEST_NAME.jmap"
211 echo "INFO: end of jmap output."
212 echo "FAIL: cannot find the instance count value." >&2
213 echo "INFO: killing $test_pid"
214 kill "$test_pid"
215 exit 2
216 fi
217 else
218 echo "INFO: instance_cnt = $instance_cnt"
219
220 if [ "$instance_cnt" -gt "$prev_instance_cnt" ]; then
221 increasing_cnt=`expr $increasing_cnt + 1`
222 else
223 decreasing_cnt=`expr $decreasing_cnt + 1`
224 fi
225 prev_instance_cnt="$instance_cnt"
226 fi
227
228 # delay between samples
229 sleep 5
230
231 loop_cnt=`expr $loop_cnt + 1`
232 done
233
234 echo "INFO: increasing_cnt = $increasing_cnt"
235 echo "INFO: decreasing_cnt = $decreasing_cnt"
236
237 echo "INFO: The instance count of" `eval echo $TARGET_CLASS` "objects"
238 if [ "$decreasing_cnt" = 0 ]; then
239 echo "INFO: is always increasing."
240 echo "FAIL: This indicates that there is a memory leak." >&2
241 exit 2
242 fi
243
244 echo "INFO: is both increasing and decreasing."
245 echo "PASS: This indicates that there is not a memory leak."
246 exit 0