Revert WeavingAdaptor generated class map optimisation
This was introduced in commit 8a4aa03845 of PR #278 contribution as part
of the #279 fix. The contributor thought that the generated closure
class entries were never used, but in fact AJDT class OSGiWeavingAdaptor
relies on the presence of those entries.
To the best of my present knowledge, it looks as if this change was the
root cause of https://github.com/eclipse-aspectj/ajdt/issues/57.
Therefore, I reverted it, simultaneously refactoring Iterator::remove
usage to delete entries from the map to Collection::removeIf.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
LangUtil: remove methods like 'is11VMOrGreater', 'is1dot5VMOrGreater'
Replace them by a uniform method 'isVMGreaterOrEqual(double)', also
overloaded for int.
This gets rid of one 'AspectJ_JDK_Update' tag. One less place to check
and update with each newly supported Java version. :-)
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
Store only weaved class names in the generatedClasses map
The generatedClasses map contained both keys of woven classes that had
generated classes associated with them, and the keys of the generated
classes themselves. It seems like this map is never consulted for the
generated class key - the generated class is generated from within the
context of woven class loading / retransformation, and thus no transform
event is generated for it by the JVM. Because of that, we do not need to
guard against re-weaving it. Other uses of generatedClasses map are for
full/empty tests, where the woven class key is sufficient. This change
simplifies deletion of a class because we do not have to look for its
associated generated classes.
Relates to #279.
WeavingAdaptor.couldWeave() tested two things: whether this specific
class (by its name) should be excluded from weaving, and whether the
class has generated classes associated with it (in which case we avoid
weaving to avoid re-creating those generated classes). However, if the
class has generated classes associated, couldWeave() is not called at
all because of the new wovenWithGeneratedClass() test, so we have
only the name test which is now called directly.
Relates to #279.
Use previous weaving result if classes were generated during weaving
A parallel-capable class loader might load the same class multiple times
in multiple threads, see
https://docs.oracle.com/javase/7/docs/technotes/guides/lang/cl-mt.html.
In this scenario, the JVM instrumentation mechanism invokes the AspectJ
weaver twice on the same class. In simple weaving scenarios, this would
just cause weaving logic to run multiple times and produce the same
result for each thread, but if the weaver is generating new classes,
it is undesirable to generate those classes multiple times.
To avoid this, the generatedClasses map in WeavingAdaptor keeps track of
classes for which inner classes were generated and avoids re-weaving
them. However, before this change, if a class was found in the generated
map, the weaver would return the un-woven bytes, which would cause
AspectJ not to work for some of the threads.
This change returns the woven bytes instead of re-running weaving.
Fixes #279.
Change value of woven class in generatedClasses map
Store the woven class and not a generated (inner) class as value of the
woven class name. This has no effect in this commit, because the value
is not consulted at all, but will be used later on.
Relates to #279.
Weaver returns null instead of original bytes for unwoven classes
This change makes sense independently of #277, but also enables using
- cp "my.jar;aspectjweaver.jar"
-XX:+AllowArchivingWithJavaAgent
-javaagent:aspectjweaver.jar
while creating a CDS archive. Afterward, the application can be run in
its woven state from the CDS archive even without '-javaagent', because
the byte code was archived in its woven state ("poor man's AJC"). See
https://github.com/eclipse-aspectj/aspectj/issues/277#issuecomment-1931142753
for details.
Fixes #277.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
Reports for loops which iterate over collections or arrays, and can be replaced with an enhanced for loop (i.e. the foreach iteration syntax).
Signed-off-by: Lars Grefer <eclipse@larsgrefer.de>
On Java9 cannot rely on URLClassLoader being found from which
to determine classpath so use the environment variable. This may
have issues if loaders are being constructed that specifically
deviate from the java.class.path.
Alexander Kriegisch
Uri Simchoni
Andrey Turbanov
Jerry James
Lars Grefer
Andy Clement
Andy Clement
jkew
aclement