annotate test/runtime/6626217/many_loader1.java.foo @ 3293:1f4413413144

7039089: G1: changeset for 7037276 broke heap verification, and related cleanups Summary: In G1 heap verification, we no longer scan perm to G1-collected heap refs as part of process_strong_roots() but rather in a separate explicit oop iteration over the perm gen. This preserves the original perm card-marks. Added a new assertion in younger_refs_iterate() to catch a simple subcase where the user may have forgotten a prior save_marks() call, as happened in the case of G1's attempt to iterate perm to G1 refs when verifying the heap before exit. The assert was deliberately weakened for ParNew+CMS and will be fixed for that combination in a future CR. Also made some (non-G1) cleanups related to code and comments obsoleted by the migration of Symbols to the native heap. Reviewed-by: iveresov, jmasa, tonyp
author ysr
date Tue, 26 Apr 2011 21:17:24 -0700
parents 495caa35b1b5
children
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1 // A simple class to extend an abstract class and get loaded with different
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2 // loaders. This class is loaded via LOADER1. A similar named class will
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3 // be loaded via LOADER2.
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4 public class many_loader extends bug_21227 {
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5 public You_Have_Been_P0wned _p0wnee;
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6
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7 // I need to compile (hence call in a loop) a function which returns a value
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8 // loaded from classloader other than the system one. The point of this
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9 // call is to give me an abstract 'hook' into a function loaded with a
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10 // foreign loader.
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11
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12 // The original 'make(boolean)' returns a bug_21227. The VM will inject a
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13 // synthetic method to up-cast the returned 'from_loader1' into a
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14 // 'bug_21227'.
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15 public many_loader[] make( IFace iface ) {
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16 // This function needs to return a value known to be loaded from LOADER2.
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17 // Since I need to use a yet different loader, I need to make an unknown
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18 // foreign call. In this case I'll be using an interface to make the
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19 // unknown call, with but a single implementor so the compiler can do the
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20 // upcast statically.
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21 return iface==null ? null : iface.gen();
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22 }
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23 }