RFR JDK-8211292: [TEST] convert com/sun/jdi/DeferredStepTest.sh test

[JC Beyler]

Hi Alex,

One question and a comment on this:
- I thought HashMap was not thread safe so I think you need to synchronize
the access to the map threadData

- I think your test code could be simplified if you moved it into a helper
method (not tested but just for example):

+    private void next() {
+        List<String> reply = jdb.command(JdbCommand.next());
+        /*
+         * Each "next" produces something like ("Breakpoint hit" line only
if the line has BP)
+         *   Step completed:
+         *     Breakpoint hit: "thread=jj2",
DeferredStepTestTarg$jj2.run(), line=74 bci=12
+         *     74                    ++count2;
 // @2 breakpoint
+         *     <empty line>
+         *     jj2[1]
+         */
+        // detect thread from the last line
+        String lastLine = reply.get(reply.size() - 1);
+        String threadName = parse(threadRegexp, lastLine);
+        String wholeReply =
reply.stream().collect(Collectors.joining(Utils.NEW_LINE));
+        int lineNum = Integer.parseInt(parse(lineRegexp, wholeReply));
+
+        System.out.println("got: thread=" + threadName + ", line=" +
lineNum);
+
+        ThreadData data = threadData.get(threadName);
+        if (data == null) {
+            data = new ThreadData();
+            threadData.put(threadName, data);
+        }
+        processNewData(data, threadName, lineNum);
+        data.lastLine = lineNum;
+    }
+
+  private void processNewData(ThreadData data, String threadName, int
lineNum) {
+        if (data.lastLine < 0) {
+            // the 1st stop in the thread
+            return;
+        }
+
+        if (lineNum == data.lastLine + 1) {
+            // expected.
+            return;
+        }
+
+        if (lineNum < data.lastLine) {
+            // looks like step to the beginning of the cycle
+            if (data.minLine > 0) {
+               // minLine and maxLine are not set - verify
+               Asserts.assertEquals(lineNum, data.minLine, threadName + "
- minLine");
+               Asserts.assertEquals(data.lastLine, data.maxLine,
threadName + " - maxLine");
+            } else {
+                // set minLine/maxLine
+                data.minLine = lineNum;
+                data.maxLine = data.lastLine;
+           }
+           return;
+        }
+
+        throw new RuntimeException(threadName + " (line " + lineNum + ") -
unexpected."
+            + " lastLine=" + data.lastLine + ", minLine=" + data.minLine +
", maxLine=" + data.maxLine);
+ }

Thanks,
Jc



On Thu, Oct 4, 2018 at 6:31 PM <serguei.spitsyn at oracle.com> wrote:

> Hi Alex,
>
> It looks good to me.
> Could you, please, also remove the line? :
>
>   156             //
>
> No need in new webrev.
>
> Thanks,
> Serguei
>
>
> On 10/4/18 4:11 PM, Alex Menkov wrote:
> > Hi Serguei,
> >
> > Updated webrev:
> >
> http://cr.openjdk.java.net/~amenkov/sh2java/DeferredStep_final/webrev.02/
> >
> > Fixed all issues except
> >  140                 // the 1st stop in the thread
> >  141                 break;
> > In this case the comment is an explanation why we reach the block, not
> > an explanation for the "break" statement.
> >
> > --alex
> >
> > On 10/04/2018 13:56, serguei.spitsyn at oracle.com wrote:
> >> Hi Alex,
> >>
> >> Several minor suggestions.
> >>
> >> 77 new Thread(aRP, "jj1").start();
> >> 78 new Thread(asRP, "jj2").start(); What mean aRP and asRP? In fact,
> >> it is confusing. Can they be renamed to something like obj1 and obj2.
> >>
> >> 79 // new Thread(aRP, "jj3").start();
> >> 80 // new Thread(asRP, "jj4").start();
> >>
> >>   These lines can be removed.
> >>
> >> 94 // line of the last stop
> >> 95 int lastLine = -1;
> >> 96 // min line (-1 means "not known yet")
> >> 97 int minLine = -1;
> >> 98 // max line (-1 means "not known yet")
> >> 99 int maxLine = -1; ... 140 // the 1st stop in the thread
> >> 141 break;
> >>
> >>    I'd suggest the refactor above as below:
> >>
> >> int lastLine = -1;  // line of the last stop
> >> int minLine = -1;  // min line (-1 means "not known yet")
> >> int maxLine = -1;// max line (-1 means "not known yet")
> >>   ...
> >> break;  // the 1st stop in the thread
> >>
> >> 116 private void next() {
> >> 117 List<String> reply = jdb.command(JdbCommand.next());
> >> 118 /* each "next" produces something like ("Breakpoint hit" line
> >> only if the line has BP)
> >> 119 Step completed:
> >> 120 Breakpoint hit: "thread=jj2", DeferredStepTestTarg$jj2.run(),
> >> line=74 bci=12
> >> 121 74 ++count2; // @2 breakpoint
> >> 122 <empty line>
> >> 123 jj2[1]
> >> 124 */ It would better to have it in this style: 118 /* * Each "next"
> >> produces something like ("Breakpoint hit" line only if the line has BP).
> >> 119 * Step completed:
> >> 120 * Breakpoint hit: "thread=jj2", DeferredStepTestTarg$jj2.run(),
> >> line=74 bci=12
> >> 121 * 74 ++count2; // @2 breakpoint
> >> 122 * <empty line>
> >> 123 * jj2[1]
> >> 124 */
> >>
> >>
> >> Otherwise, it looks Okay to me.
> >>
> >>
> >> Thanks,
> >> Serguei
> >>
> >> On 10/3/18 5:49 PM, Alex Menkov wrote:
> >>> Hi all,
> >>>
> >>> please review a fix for
> >>> https://bugs.openjdk.java.net/browse/JDK-8211292
> >>> webrev:
> >>> http://cr.openjdk.java.net/~amenkov/sh2java/DeferredStep_final/webrev/
> >>>
> >>> The fix converts manual shell test to automatic java (as Java allows
> >>> to parse jdb replies much easier).
> >>> This is the last sub-task for the "shell to java conversion" task,
> >>> so the fix also removes shared shell scripts.
> >>>
> >>> --alex
> >>
>
>

-- 

Thanks,
Jc
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