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6888880: JKernel VM to inject the sun.jkernel.DownloadManager as a boot classloader hook

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Call sun.jkernel.DownloadManager.setBootClassLoaderHook during the kernel VM initialization

Reviewed-by: alanb, coleenp, acorn
This commit is contained in:
Mandy Chung 2009-11-25 08:37:04 -08:00
parent 8b3ec53033
commit b409d16477
2 changed files with 23 additions and 0 deletions
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1
hotspot/src/share/vm/classfile/vmSymbols.hpp
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@ -104,6 +104,7 @@
template(java_lang_AssertionStatusDirectives, "java/lang/AssertionStatusDirectives") \ template(java_lang_AssertionStatusDirectives, "java/lang/AssertionStatusDirectives") \
template(sun_jkernel_DownloadManager, "sun/jkernel/DownloadManager") \ template(sun_jkernel_DownloadManager, "sun/jkernel/DownloadManager") \
template(getBootClassPathEntryForClass_name, "getBootClassPathEntryForClass") \ template(getBootClassPathEntryForClass_name, "getBootClassPathEntryForClass") \
template(setBootClassLoaderHook_name, "setBootClassLoaderHook") \
\ \
/* class file format tags */ \ /* class file format tags */ \
template(tag_source_file, "SourceFile") \ template(tag_source_file, "SourceFile") \

22
hotspot/src/share/vm/runtime/thread.cpp
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@ -884,6 +884,22 @@ static void call_initializeSystemClass(TRAPS) {
vmSymbolHandles::void_method_signature(), CHECK); 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) { static void reset_vm_info_property(TRAPS) {
// the vm info string // the vm info string
ResourceMark rm(THREAD); ResourceMark rm(THREAD);
@ -3102,6 +3118,12 @@ jint Threads::create_vm(JavaVMInitArgs* args, bool* canTryAgain) {
vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION)); 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 #ifndef SERIALGC
// Support for ConcurrentMarkSweep. This should be cleaned up // Support for ConcurrentMarkSweep. This should be cleaned up
// and better encapsulated. The ugly nested if test would go away // and better encapsulated. The ugly nested if test would go away