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natClassLoader.cc: Add comments.

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2006-05-10  Andrew Haley  <aph@redhat.com>

        * java/lang/natClassLoader.cc: Add comments.

From-SVN: r113677
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Andrew Haley 2006-05-10 17:50:09 +00:00 committed by Andrew Haley
parent e080b30bd7
commit e68dbbf5a3
2 changed files with 28 additions and 0 deletions
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4
libjava/ChangeLog
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@ -1,3 +1,7 @@
2006-05-10 Andrew Haley <aph@redhat.com>
* java/lang/natClassLoader.cc: Add comments.
2006-05-09 Andrew Haley <aph@redhat.com>
* prims.cc (_Jv_soleIndirectCompiledEngine): New.

24
libjava/java/lang/natClassLoader.cc
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@ -156,6 +156,30 @@ _Jv_UnregisterInitiatingLoader (jclass klass, java::lang::ClassLoader *loader)
loader->loadedClasses->remove(klass->name->toString());
}
// Class registration.
//
// There are two kinds of functions that register classes.
//
// Type 1:
//
// These take the address of a class that is in an object file.
// Because these classes are not allocated on the heap, It is also
// necessary to register the address of the object for garbage
// collection. This is used with the "old" C++ ABI and with
// -findirect-dispatch -fno-indirect-classes.
//
// Type 2:
//
// These take an initializer struct, create the class, and return the
// address of the newly created class to their caller. These are used
// with -findirect-dispatch.
//
// _Jv_RegisterClasses() and _Jv_RegisterClasses_Counted() are
// functions of Type 1, and _Jv_NewClassFromInitializer() and
// _Jv_RegisterNewClasses() are of Type 2.
// This function is called many times during startup, before main() is
// run. At that point in time we know for certain we are running
// single-threaded, so we don't need to lock when adding classes to the