Mercurial > jdk8-mips64-public > hotspot / annotate
src/os_cpu/linux_x86/vm/thread_linux_x86.cpp@f34d701e952e (annotated)
src/os_cpu/linux_x86/vm/thread_linux_x86.cpp
Tue, 27 Nov 2012 14:20:21 +0100
- author
- stefank
- date
- Tue, 27 Nov 2012 14:20:21 +0100
- changeset 4299
- f34d701e952e
- parent 2314
- f95d63e2154a
- child 5237
- f2110083203d
- permissions
- -rw-r--r--
8003935: Simplify the needed includes for using Thread::current()
Reviewed-by: dholmes, rbackman, coleenp
| duke@435 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #include "precompiled.hpp" |
| stefank@2314 | 26 | #include "runtime/frame.inline.hpp" |
| stefank@4299 | 27 | #include "runtime/thread.inline.hpp" |
| duke@435 | 28 | |
| duke@435 | 29 | // For Forte Analyzer AsyncGetCallTrace profiling support - thread is |
| duke@435 | 30 | // currently interrupted by SIGPROF |
| duke@435 | 31 | bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, |
| duke@435 | 32 | void* ucontext, bool isInJava) { |
| duke@435 | 33 | |
| duke@435 | 34 | assert(Thread::current() == this, "caller must be current thread"); |
| duke@435 | 35 | assert(this->is_Java_thread(), "must be JavaThread"); |
| duke@435 | 36 | |
| duke@435 | 37 | JavaThread* jt = (JavaThread *)this; |
| duke@435 | 38 | |
| duke@435 | 39 | // If we have a last_Java_frame, then we should use it even if |
| duke@435 | 40 | // isInJava == true. It should be more reliable than ucontext info. |
| duke@435 | 41 | if (jt->has_last_Java_frame()) { |
| duke@435 | 42 | *fr_addr = jt->pd_last_frame(); |
| duke@435 | 43 | return true; |
| duke@435 | 44 | } |
| duke@435 | 45 | |
| duke@435 | 46 | // At this point, we don't have a last_Java_frame, so |
| duke@435 | 47 | // we try to glean some information out of the ucontext |
| duke@435 | 48 | // if we were running Java code when SIGPROF came in. |
| duke@435 | 49 | if (isInJava) { |
| duke@435 | 50 | ucontext_t* uc = (ucontext_t*) ucontext; |
| duke@435 | 51 | |
| duke@435 | 52 | intptr_t* ret_fp; |
| duke@435 | 53 | intptr_t* ret_sp; |
| duke@435 | 54 | ExtendedPC addr = os::Linux::fetch_frame_from_ucontext(this, uc, |
| duke@435 | 55 | &ret_sp, &ret_fp); |
| duke@435 | 56 | if (addr.pc() == NULL || ret_sp == NULL ) { |
| duke@435 | 57 | // ucontext wasn't useful |
| duke@435 | 58 | return false; |
| duke@435 | 59 | } |
| duke@435 | 60 | |
| duke@435 | 61 | frame ret_frame(ret_sp, ret_fp, addr.pc()); |
| duke@435 | 62 | if (!ret_frame.safe_for_sender(jt)) { |
| duke@435 | 63 | #ifdef COMPILER2 |
| duke@435 | 64 | // C2 uses ebp as a general register see if NULL fp helps |
| duke@435 | 65 | frame ret_frame2(ret_sp, NULL, addr.pc()); |
| duke@435 | 66 | if (!ret_frame2.safe_for_sender(jt)) { |
| duke@435 | 67 | // nothing else to try if the frame isn't good |
| duke@435 | 68 | return false; |
| duke@435 | 69 | } |
| duke@435 | 70 | ret_frame = ret_frame2; |
| duke@435 | 71 | #else |
| duke@435 | 72 | // nothing else to try if the frame isn't good |
| duke@435 | 73 | return false; |
| duke@435 | 74 | #endif /* COMPILER2 */ |
| duke@435 | 75 | } |
| duke@435 | 76 | *fr_addr = ret_frame; |
| duke@435 | 77 | return true; |
| duke@435 | 78 | } |
| duke@435 | 79 | |
| duke@435 | 80 | // nothing else to try |
| duke@435 | 81 | return false; |
| duke@435 | 82 | } |
| bobv@2036 | 83 | |
| bobv@2036 | 84 | void JavaThread::cache_global_variables() { } |
| bobv@2036 | 85 |
