Oh, yes. Thank you so much. 在2023年4月28日星期五 UTC+8 14:26:47<Marc R. Hoffmann> 写道：
> https://www.jacoco.org/jacoco/trunk/doc/classids.html > > What can cause different class ids? > > Class ids are identical for the exact same class file only (byte-by-byte). > There is a couple of reasons why you might get different class files. First > compiling Java source files will result in different class files if you use > a different tool chain: > > - Different compiler vendor (e.g. Eclipse vs. Oracle JDK) > - Different compiler versions > - Different compiler settings (e.g. debug vs. non-debug) > > Also post-processing class files (obfuscation, AspectJ, etc.) will > typically change the class files. JaCoCo will work well if you simply use > the same class files for runtime as well as for analysis. So the tool chain > to create these class files does not matter. > > Even if the class files on the file system are the same there is possible > that classes seen by the JaCoCo runtime agent are different anyways. This > typically happens when another Java agent is configured *before* the > JaCoCo agent or special class loaders pre-process the class files. Typical > candidates are: > > - Mocking frameworks > - Application servers > - Persistence frameworks > > > > > > > On 28. Apr 2023, at 06:50, falin luo <meili...@gmail.com> wrote: > > Hi, > I have seen the documentation. But in my view, I think that the classid > just identifies a unique class. So, when modifying CRC to change the way of > identification, the class files should be the same between instrumentation > and analysis. > Or I still don't understand the reason why using the total byte code to > encode the classic? Or how the classes could be different between > instrumentation and analysis, can you give me an example? > > Thanks, > Lin > > 在2023年4月26日星期三 UTC+8 13:23:04<Marc R. Hoffmann> 写道： > >> Hi, >> >> yes, your modification breaks JaCoCo because then class files might be >> different between intrumentation and analysis. Please see chapter “Why >> can't JaCoCo simply use the class name to identify classes?” in the >> documentation: >> >> https://www.jacoco.org/jacoco/trunk/doc/classids.html >> >> >> Regards, >> -marc >> >> >> >> On 24. Apr 2023, at 11:35, falin luo <meili...@gmail.com> wrote: >> >> Hi: >> I want to modify the CRC to identify the class only by class name, like >> https://github.com/MEILIDEKCL/jacoco-dev/blob/dev-lfl/org.jacoco.core/src/org/jacoco/core/internal/data/CRC64.java >> . >> >> And I tested it, but I get the wrong information below: >> >> <屏幕截图 2023-04-24 173233.png> >> I wonder if it's because I modified the code causing the array overflow. >> If so, what should I do, or how to change the source code? >> >> Thanks! >> >> -- >> You received this message because you are subscribed to the Google Groups >> "JaCoCo and EclEmma Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to jacoco+un...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/jacoco/5e6cac41-4494-4cae-ab78-1431243e7dfdn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/jacoco/5e6cac41-4494-4cae-ab78-1431243e7dfdn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> <屏幕截图 2023-04-24 173233.png> >> >> >> > -- > You received this message because you are subscribed to the Google Groups > "JaCoCo and EclEmma Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to jacoco+un...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/jacoco/5ddaaf3e-900b-4b02-828b-c8bd94b3c2edn%40googlegroups.com > > <https://groups.google.com/d/msgid/jacoco/5ddaaf3e-900b-4b02-828b-c8bd94b3c2edn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- You received this message because you are subscribed to the Google Groups "JaCoCo and EclEmma Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jacoco+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jacoco/a38d55b4-94d0-47b3-abce-1d22f8f5e9f2n%40googlegroups.com.
