Mercurial > hg > truffle
changeset 1115:4b966d9946a3
6888880: JKernel VM to inject the sun.jkernel.DownloadManager as a boot classloader hook
Summary: Call sun.jkernel.DownloadManager.setBootClassLoaderHook during the kernel VM initialization
Reviewed-by: alanb, coleenp, acorn
author | mchung |
---|---|
date | Wed, 25 Nov 2009 08:37:04 -0800 |
parents | 1920bd911283 |
children | 0018cf203583 95e9083cf4a7 |
files | src/share/vm/classfile/vmSymbols.hpp src/share/vm/runtime/thread.cpp |
diffstat | 2 files changed, 23 insertions(+), 0 deletions(-) [+] |
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--- a/src/share/vm/classfile/vmSymbols.hpp Mon Nov 23 16:24:35 2009 -0500 +++ b/src/share/vm/classfile/vmSymbols.hpp Wed Nov 25 08:37:04 2009 -0800 @@ -104,6 +104,7 @@ template(java_lang_AssertionStatusDirectives, "java/lang/AssertionStatusDirectives") \ template(sun_jkernel_DownloadManager, "sun/jkernel/DownloadManager") \ template(getBootClassPathEntryForClass_name, "getBootClassPathEntryForClass") \ + template(setBootClassLoaderHook_name, "setBootClassLoaderHook") \ \ /* class file format tags */ \ template(tag_source_file, "SourceFile") \
--- a/src/share/vm/runtime/thread.cpp Mon Nov 23 16:24:35 2009 -0500 +++ b/src/share/vm/runtime/thread.cpp Wed Nov 25 08:37:04 2009 -0800 @@ -884,6 +884,22 @@ vmSymbolHandles::void_method_signature(), CHECK); } +#ifdef KERNEL +static void set_jkernel_boot_classloader_hook(TRAPS) { + klassOop k = SystemDictionary::sun_jkernel_DownloadManager_klass(); + instanceKlassHandle klass (THREAD, k); + + if (k == NULL) { + // sun.jkernel.DownloadManager may not present in the JDK; just return + return; + } + + JavaValue result(T_VOID); + JavaCalls::call_static(&result, klass, vmSymbolHandles::setBootClassLoaderHook_name(), + vmSymbolHandles::void_method_signature(), CHECK); +} +#endif // KERNEL + static void reset_vm_info_property(TRAPS) { // the vm info string ResourceMark rm(THREAD); @@ -3102,6 +3118,12 @@ vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION)); } +#ifdef KERNEL + if (JDK_Version::is_gte_jdk17x_version()) { + set_jkernel_boot_classloader_hook(THREAD); + } +#endif // KERNEL + #ifndef SERIALGC // Support for ConcurrentMarkSweep. This should be cleaned up // and better encapsulated. The ugly nested if test would go away