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comparison src/share/vm/c1/c1_Runtime1.cpp @ 1213:6deeaebad47a

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6902182: 4/4 Starting with jdwp agent should not incur performance penalty Summary: Rename can_post_exceptions support to can_post_on_exceptions. Add support for should_post_on_exceptions flag to permit per JavaThread optimizations. Reviewed-by: never, kvn, dcubed Contributed-by: tom.deneau@amd.com
author dcubed
date Mon, 01 Feb 2010 17:35:05 -0700
parents 4ce7240d622c
children 230fac611b50
comparison
equal deleted inserted replaced
1196:f3345b7b01b4 1213:6deeaebad47a
1 /* 1 /*
2 * Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1999-2010 Sun Microsystems, Inc. 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.
108 if ( !caller_is_deopted()) { 108 if ( !caller_is_deopted()) {
109 JavaThread* thread = JavaThread::current(); 109 JavaThread* thread = JavaThread::current();
110 RegisterMap reg_map(thread, false); 110 RegisterMap reg_map(thread, false);
111 frame runtime_frame = thread->last_frame(); 111 frame runtime_frame = thread->last_frame();
112 frame caller_frame = runtime_frame.sender(&reg_map); 112 frame caller_frame = runtime_frame.sender(&reg_map);
113 VM_DeoptimizeFrame deopt(thread, caller_frame.id()); 113 // bypass VM_DeoptimizeFrame and deoptimize the frame directly
114 VMThread::execute(&deopt); 114 Deoptimization::deoptimize_frame(thread, caller_frame.id());
115 assert(caller_is_deopted(), "Must be deoptimized"); 115 assert(caller_is_deopted(), "Must be deoptimized");
116 } 116 }
117 } 117 }
118 118
119 119
352 THROW(vmSymbolHandles::java_lang_ArrayStoreException()); 352 THROW(vmSymbolHandles::java_lang_ArrayStoreException());
353 JRT_END 353 JRT_END
354 354
355 355
356 JRT_ENTRY(void, Runtime1::post_jvmti_exception_throw(JavaThread* thread)) 356 JRT_ENTRY(void, Runtime1::post_jvmti_exception_throw(JavaThread* thread))
357 if (JvmtiExport::can_post_exceptions()) { 357 if (JvmtiExport::can_post_on_exceptions()) {
358 vframeStream vfst(thread, true); 358 vframeStream vfst(thread, true);
359 address bcp = vfst.method()->bcp_from(vfst.bci()); 359 address bcp = vfst.method()->bcp_from(vfst.bci());
360 JvmtiExport::post_exception_throw(thread, vfst.method(), bcp, thread->exception_oop()); 360 JvmtiExport::post_exception_throw(thread, vfst.method(), bcp, thread->exception_oop());
361 } 361 }
362 JRT_END 362 JRT_END
435 // enough space on the stack to do so. Use fast exceptions only if the guard 435 // enough space on the stack to do so. Use fast exceptions only if the guard
436 // pages are enabled. 436 // pages are enabled.
437 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); 437 bool guard_pages_enabled = thread->stack_yellow_zone_enabled();
438 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); 438 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
439 439
440 if (JvmtiExport::can_post_exceptions()) { 440 if (JvmtiExport::can_post_on_exceptions()) {
441 // To ensure correct notification of exception catches and throws 441 // To ensure correct notification of exception catches and throws
442 // we have to deoptimize here. If we attempted to notify the 442 // we have to deoptimize here. If we attempted to notify the
443 // catches and throws during this exception lookup it's possible 443 // catches and throws during this exception lookup it's possible
444 // we could deoptimize on the way out of the VM and end back in 444 // we could deoptimize on the way out of the VM and end back in
445 // the interpreter at the throw site. This would result in double 445 // the interpreter at the throw site. This would result in double