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comparison src/share/vm/runtime/os.cpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents 1d7922586cf6
children a7509aff1b06
comparison
equal deleted inserted replaced
6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
269 break; 269 break;
270 } 270 }
271 default: { 271 default: {
272 // Dispatch the signal to java 272 // Dispatch the signal to java
273 HandleMark hm(THREAD); 273 HandleMark hm(THREAD);
274 klassOop k = SystemDictionary::resolve_or_null(vmSymbols::sun_misc_Signal(), THREAD); 274 Klass* k = SystemDictionary::resolve_or_null(vmSymbols::sun_misc_Signal(), THREAD);
275 KlassHandle klass (THREAD, k); 275 KlassHandle klass (THREAD, k);
276 if (klass.not_null()) { 276 if (klass.not_null()) {
277 JavaValue result(T_VOID); 277 JavaValue result(T_VOID);
278 JavaCallArguments args; 278 JavaCallArguments args;
279 args.push_int(sig); 279 args.push_int(sig);
292 // trigger additional out-of-memory conditions 292 // trigger additional out-of-memory conditions
293 if (tty != NULL) { 293 if (tty != NULL) {
294 char klass_name[256]; 294 char klass_name[256];
295 char tmp_sig_name[16]; 295 char tmp_sig_name[16];
296 const char* sig_name = "UNKNOWN"; 296 const char* sig_name = "UNKNOWN";
297 instanceKlass::cast(PENDING_EXCEPTION->klass())-> 297 InstanceKlass::cast(PENDING_EXCEPTION->klass())->
298 name()->as_klass_external_name(klass_name, 256); 298 name()->as_klass_external_name(klass_name, 256);
299 if (os::exception_name(sig, tmp_sig_name, 16) != NULL) 299 if (os::exception_name(sig, tmp_sig_name, 16) != NULL)
300 sig_name = tmp_sig_name; 300 sig_name = tmp_sig_name;
301 warning("Exception %s occurred dispatching signal %s to handler" 301 warning("Exception %s occurred dispatching signal %s to handler"
302 "- the VM may need to be forcibly terminated", 302 "- the VM may need to be forcibly terminated",
312 312
313 void os::signal_init() { 313 void os::signal_init() {
314 if (!ReduceSignalUsage) { 314 if (!ReduceSignalUsage) {
315 // Setup JavaThread for processing signals 315 // Setup JavaThread for processing signals
316 EXCEPTION_MARK; 316 EXCEPTION_MARK;
317 klassOop k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, CHECK); 317 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_Thread(), true, CHECK);
318 instanceKlassHandle klass (THREAD, k); 318 instanceKlassHandle klass (THREAD, k);
319 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK); 319 instanceHandle thread_oop = klass->allocate_instance_handle(CHECK);
320 320
321 const char thread_name[] = "Signal Dispatcher"; 321 const char thread_name[] = "Signal Dispatcher";
322 Handle string = java_lang_String::create_from_str(thread_name, CHECK); 322 Handle string = java_lang_String::create_from_str(thread_name, CHECK);
891 print = true; 891 print = true;
892 } 892 }
893 if (print) { 893 if (print) {
894 st->print_cr(INTPTR_FORMAT " is an oop", addr); 894 st->print_cr(INTPTR_FORMAT " is an oop", addr);
895 oop(p)->print_on(st); 895 oop(p)->print_on(st);
896 if (p != (HeapWord*)x && oop(p)->is_constMethod() &&
897 constMethodOop(p)->contains(addr)) {
898 Thread *thread = Thread::current();
899 HandleMark hm(thread);
900 methodHandle mh (thread, constMethodOop(p)->method());
901 if (!mh->is_native()) {
902 st->print_cr("bci_from(%p) = %d; print_codes():",
903 addr, mh->bci_from(address(x)));
904 mh->print_codes_on(st);
905 }
906 }
907 return; 896 return;
908 } 897 }
909 } else { 898 } else {
910 if (Universe::heap()->is_in_reserved(addr)) { 899 if (Universe::heap()->is_in_reserved(addr)) {
911 st->print_cr(INTPTR_FORMAT " is an unallocated location " 900 st->print_cr(INTPTR_FORMAT " is an unallocated location "
956 if (verbose) thread->print_on(st); 945 if (verbose) thread->print_on(st);
957 return; 946 return;
958 } 947 }
959 948
960 } 949 }
950
951 #ifndef PRODUCT
952 // Check if in metaspace.
953 if (ClassLoaderDataGraph::contains((address)addr)) {
954 // Use addr->print() from the debugger instead (not here)
955 st->print_cr(INTPTR_FORMAT
956 " is pointing into metadata", addr);
957 return;
958 }
959 #endif
960
961 // Try an OS specific find 961 // Try an OS specific find
962 if (os::find(addr, st)) { 962 if (os::find(addr, st)) {
963 return; 963 return;
964 } 964 }
965 965