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8165896: Use "open" flag from JVM_DefineModule to export all module packages

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Implemented VM side of open modules, which export all their packages unqualifiedly. Automatic modules and unnamed modules are treated internally as open modules.

Reviewed-by: alanb, hseigel, lfoltan
This commit is contained in:
Rachel Protacio 2017-04-24 12:08:28 -04:00
parent f9e13c6d3f
commit 9947f147f6
28 changed files with 205 additions and 93 deletions
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12
hotspot/src/share/vm/runtime/reflection.cpp
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@ -464,8 +464,9 @@ static bool can_relax_access_check_for(const Klass* accessor,
Caller S in package If MS is loose: YES If same classloader/package (PS == PT): YES
PS, runtime module MS If MS can read T's If same runtime module: (MS == MT): YES
unnamed module: YES
Else if (MS can read MT (Establish readability) &&
MT exports PT to MS or to all modules): YES
Else if (MS can read MT (establish readability) &&
((MT exports PT to MS or to all modules) ||
(MT is open))): YES
------------------------------------------------------------------------------------------------
Caller S in unnamed YES Readability exists because unnamed module
@ -511,7 +512,7 @@ Reflection::VerifyClassAccessResults Reflection::verify_class_access(
return ACCESS_OK;
}
// Acceptable access to a type in an unamed module. Note that since
// Acceptable access to a type in an unnamed module. Note that since
// unnamed modules can read all unnamed modules, this also handles the
// case where module_from is also unnamed but in a different class loader.
if (!module_to->is_named() &&
@ -524,6 +525,11 @@ Reflection::VerifyClassAccessResults Reflection::verify_class_access(
return MODULE_NOT_READABLE;
}
// Access is allowed if module_to is open, i.e. all its packages are unqualifiedly exported
if (module_to->is_open()) {
return ACCESS_OK;
}
PackageEntry* package_to = new_class->package();
assert(package_to != NULL, "can not obtain new_class' package");