8269186: [REDO] Remove CodeCache::mark_for_evol_deoptimization() method
Reviewed-by: hseigel, lfoltan, sspitsyn
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7621fa37ef
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@ -1077,12 +1077,6 @@ void CodeCache::old_nmethods_do(MetadataClosure* f) {
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log_debug(redefine, class, nmethod)("Walked %d nmethods for mark_on_stack", length);
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}
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// Just marks the methods in this class as needing deoptimization
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void CodeCache::mark_for_evol_deoptimization(InstanceKlass* dependee) {
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assert(SafepointSynchronize::is_at_safepoint(), "Can only do this at a safepoint!");
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}
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// Walk compiled methods and mark dependent methods for deoptimization.
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int CodeCache::mark_dependents_for_evol_deoptimization() {
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assert(SafepointSynchronize::is_at_safepoint(), "Can only do this at a safepoint!");
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@ -271,7 +271,6 @@ class CodeCache : AllStatic {
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// RedefineClasses support
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// Flushing and deoptimization in case of evolution
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static void mark_for_evol_deoptimization(InstanceKlass* dependee);
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static int mark_dependents_for_evol_deoptimization();
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static void mark_all_nmethods_for_evol_deoptimization();
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static void flush_evol_dependents();
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@ -4068,7 +4068,7 @@ void VM_RedefineClasses::transfer_old_native_function_registrations(InstanceKlas
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transfer.transfer_registrations(_matching_old_methods, _matching_methods_length);
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}
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// Deoptimize all compiled code that depends on this class.
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// Deoptimize all compiled code that depends on the classes redefined.
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//
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// If the can_redefine_classes capability is obtained in the onload
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// phase then the compiler has recorded all dependencies from startup.
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@ -4084,18 +4084,6 @@ void VM_RedefineClasses::transfer_old_native_function_registrations(InstanceKlas
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// that depends on the class.
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//
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// First step is to walk the code cache for each class redefined and mark
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// dependent methods. Wait until all classes are processed to deoptimize everything.
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void VM_RedefineClasses::mark_dependent_code(InstanceKlass* ik) {
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assert_locked_or_safepoint(Compile_lock);
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// All dependencies have been recorded from startup or this is a second or
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// subsequent use of RedefineClasses
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if (JvmtiExport::all_dependencies_are_recorded()) {
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CodeCache::mark_for_evol_deoptimization(ik);
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}
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}
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void VM_RedefineClasses::flush_dependent_code() {
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assert(SafepointSynchronize::is_at_safepoint(), "sanity check");
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@ -4221,9 +4209,6 @@ void VM_RedefineClasses::redefine_single_class(Thread* current, jclass the_jclas
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JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
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jvmti_breakpoints.clearall_in_class_at_safepoint(the_class);
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// Mark all compiled code that depends on this class
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mark_dependent_code(the_class);
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_old_methods = the_class->methods();
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_new_methods = scratch_class->methods();
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_the_class = the_class;
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@ -493,7 +493,6 @@ class VM_RedefineClasses: public VM_Operation {
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constantPoolHandle scratch_cp, int scratch_cp_length, TRAPS);
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void flush_dependent_code();
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void mark_dependent_code(InstanceKlass* ik);
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// lock classes to redefine since constant pool merging isn't thread safe.
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void lock_classes();
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