Fri, 08 Feb 2013 12:48:24 +0100
8006423: SA: NullPointerException in sun.jvm.hotspot.debugger.bsd.BsdThread.getContext(BsdThread.java:67)
Summary: Do not rely on mach thread port names to identify threads from SA
Reviewed-by: dholmes, minqi, rbackman
never@3156 | 1 | /* |
never@3156 | 2 | * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
never@3156 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
never@3156 | 4 | * |
never@3156 | 5 | * This code is free software; you can redistribute it and/or modify it |
never@3156 | 6 | * under the terms of the GNU General Public License version 2 only, as |
never@3156 | 7 | * published by the Free Software Foundation. |
never@3156 | 8 | * |
never@3156 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
never@3156 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
never@3156 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
never@3156 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
never@3156 | 13 | * accompanied this code). |
never@3156 | 14 | * |
never@3156 | 15 | * You should have received a copy of the GNU General Public License version |
never@3156 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
never@3156 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
never@3156 | 18 | * |
never@3156 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
never@3156 | 20 | * or visit www.oracle.com if you need additional information or have any |
never@3156 | 21 | * questions. |
never@3156 | 22 | * |
never@3156 | 23 | */ |
never@3156 | 24 | |
never@3156 | 25 | #ifndef OS_CPU_BSD_X86_VM_THREAD_BSD_X86_HPP |
never@3156 | 26 | #define OS_CPU_BSD_X86_VM_THREAD_BSD_X86_HPP |
never@3156 | 27 | |
never@3156 | 28 | private: |
never@3156 | 29 | void pd_initialize() { |
never@3156 | 30 | _anchor.clear(); |
never@3156 | 31 | } |
never@3156 | 32 | |
never@3156 | 33 | frame pd_last_frame() { |
never@3156 | 34 | assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); |
never@3156 | 35 | if (_anchor.last_Java_pc() != NULL) { |
never@3156 | 36 | return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc()); |
never@3156 | 37 | } else { |
never@3156 | 38 | // This will pick up pc from sp |
never@3156 | 39 | return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp()); |
never@3156 | 40 | } |
never@3156 | 41 | } |
never@3156 | 42 | |
never@3156 | 43 | public: |
never@3156 | 44 | // Mutators are highly dangerous.... |
never@3156 | 45 | intptr_t* last_Java_fp() { return _anchor.last_Java_fp(); } |
never@3156 | 46 | void set_last_Java_fp(intptr_t* fp) { _anchor.set_last_Java_fp(fp); } |
never@3156 | 47 | |
never@3156 | 48 | void set_base_of_stack_pointer(intptr_t* base_sp) { |
never@3156 | 49 | } |
never@3156 | 50 | |
never@3156 | 51 | static ByteSize last_Java_fp_offset() { |
never@3156 | 52 | return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset(); |
never@3156 | 53 | } |
never@3156 | 54 | |
never@3156 | 55 | intptr_t* base_of_stack_pointer() { |
never@3156 | 56 | return NULL; |
never@3156 | 57 | } |
never@3156 | 58 | void record_base_of_stack_pointer() { |
never@3156 | 59 | } |
never@3156 | 60 | |
never@3156 | 61 | bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, |
never@3156 | 62 | bool isInJava); |
never@3156 | 63 | |
never@3156 | 64 | // These routines are only used on cpu architectures that |
never@3156 | 65 | // have separate register stacks (Itanium). |
never@3156 | 66 | static bool register_stack_overflow() { return false; } |
never@3156 | 67 | static void enable_register_stack_guard() {} |
never@3156 | 68 | static void disable_register_stack_guard() {} |
never@3156 | 69 | |
never@3156 | 70 | #endif // OS_CPU_BSD_X86_VM_THREAD_BSD_X86_HPP |