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8171971: Fix timing bug in JVM management of package export lists

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Reduce the number of fields that maintain export state and use Module_lock to access these fields

Reviewed-by: acorn, sspitsyn, lfoltan
This commit is contained in:
Harold Seigel 2017-01-20 16:09:56 -05:00
parent 5796b2e174
commit c199f4eac2
4 changed files with 105 additions and 75 deletions
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9
hotspot/src/share/vm/classfile/modules.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -823,10 +823,7 @@ void Modules::add_module_exports_to_all_unnamed(jobject module, const char* pack
package_entry->name()->as_C_string(),
module_entry->name()->as_C_string());
// Mark package as exported to all unnamed modules, unless already
// unqualifiedly exported.
if (!package_entry->is_unqual_exported()) {
package_entry->set_is_exported_allUnnamed();
}
// Mark package as exported to all unnamed modules.
package_entry->set_is_exported_allUnnamed();
}
}