Mercurial > jdk8-mips64-public > hotspot / annotate
src/os_cpu/bsd_x86/vm/threadLS_bsd_x86.hpp@758935f7c23f (annotated)
src/os_cpu/bsd_x86/vm/threadLS_bsd_x86.hpp
Fri, 08 Feb 2013 12:48:24 +0100
- author
- sla
- date
- Fri, 08 Feb 2013 12:48:24 +0100
- changeset 4564
- 758935f7c23f
- parent 0
- f90c822e73f8
- permissions
- -rw-r--r--
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
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP |
| aoqi@0 | 26 | #define OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | // Processor dependent parts of ThreadLocalStorage |
| aoqi@0 | 29 | |
| aoqi@0 | 30 | #ifndef AMD64 |
| aoqi@0 | 31 | // map stack pointer to thread pointer - see notes in threadLS_bsd_x86.cpp |
| aoqi@0 | 32 | #define SP_BITLENGTH 32 |
| aoqi@0 | 33 | #ifndef PAGE_SHIFT |
| aoqi@0 | 34 | #define PAGE_SHIFT 12 |
| aoqi@0 | 35 | #define PAGE_SIZE (1UL << PAGE_SHIFT) |
| aoqi@0 | 36 | #endif |
| aoqi@0 | 37 | static Thread* _sp_map[1UL << (SP_BITLENGTH - PAGE_SHIFT)]; |
| aoqi@0 | 38 | #endif // !AMD64 |
| aoqi@0 | 39 | |
| aoqi@0 | 40 | public: |
| aoqi@0 | 41 | |
| aoqi@0 | 42 | #ifndef AMD64 |
| aoqi@0 | 43 | static Thread** sp_map_addr() { return _sp_map; } |
| aoqi@0 | 44 | #endif // !AMD64 |
| aoqi@0 | 45 | |
| aoqi@0 | 46 | static Thread* thread() { |
| aoqi@0 | 47 | #ifdef AMD64 |
| aoqi@0 | 48 | return (Thread*) os::thread_local_storage_at(thread_index()); |
| aoqi@0 | 49 | #else |
| aoqi@0 | 50 | uintptr_t sp; |
| aoqi@0 | 51 | __asm__ volatile ("movl %%esp, %0" : "=r" (sp)); |
| aoqi@0 | 52 | return _sp_map[sp >> PAGE_SHIFT]; |
| aoqi@0 | 53 | #endif // AMD64 |
| aoqi@0 | 54 | } |
| aoqi@0 | 55 | |
| aoqi@0 | 56 | #endif // OS_CPU_BSD_X86_VM_THREADLS_BSD_X86_HPP |
