Sat, 01 Dec 2007 00:00:00 +0000
Initial load
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2003-2005 Sun Microsystems, Inc. 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 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #include "incls/_precompiled.incl" |
duke@435 | 26 | #include "incls/_thread_solaris_x86.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | // For Forte Analyzer AsyncGetCallTrace profiling support - thread is |
duke@435 | 29 | // currently interrupted by SIGPROF |
duke@435 | 30 | bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, |
duke@435 | 31 | void* ucontext, bool isInJava) { |
duke@435 | 32 | |
duke@435 | 33 | assert(Thread::current() == this, "caller must be current thread"); |
duke@435 | 34 | assert(this->is_Java_thread(), "must be JavaThread"); |
duke@435 | 35 | |
duke@435 | 36 | JavaThread* jt = (JavaThread *)this; |
duke@435 | 37 | |
duke@435 | 38 | // If we have a last_Java_frame, then we should use it even if |
duke@435 | 39 | // isInJava == true. It should be more reliable than ucontext info. |
duke@435 | 40 | if (jt->has_last_Java_frame()) { |
duke@435 | 41 | *fr_addr = jt->pd_last_frame(); |
duke@435 | 42 | return true; |
duke@435 | 43 | } |
duke@435 | 44 | |
duke@435 | 45 | // At this point, we don't have a last_Java_frame, so |
duke@435 | 46 | // we try to glean some information out of the ucontext |
duke@435 | 47 | // if we were running Java code when SIGPROF came in. |
duke@435 | 48 | if (isInJava) { |
duke@435 | 49 | ucontext_t* uc = (ucontext_t*) ucontext; |
duke@435 | 50 | |
duke@435 | 51 | intptr_t* ret_fp; |
duke@435 | 52 | intptr_t* ret_sp; |
duke@435 | 53 | ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc, |
duke@435 | 54 | &ret_sp, &ret_fp); |
duke@435 | 55 | if (addr.pc() == NULL || ret_sp == NULL ) { |
duke@435 | 56 | // ucontext wasn't useful |
duke@435 | 57 | return false; |
duke@435 | 58 | } |
duke@435 | 59 | |
duke@435 | 60 | frame ret_frame(ret_sp, ret_fp, addr.pc()); |
duke@435 | 61 | if (!ret_frame.safe_for_sender(jt)) { |
duke@435 | 62 | #ifdef COMPILER2 |
duke@435 | 63 | frame ret_frame2(ret_sp, NULL, addr.pc()); |
duke@435 | 64 | if (!ret_frame2.safe_for_sender(jt)) { |
duke@435 | 65 | // nothing else to try if the frame isn't good |
duke@435 | 66 | return false; |
duke@435 | 67 | } |
duke@435 | 68 | ret_frame = ret_frame2; |
duke@435 | 69 | #else |
duke@435 | 70 | // nothing else to try if the frame isn't good |
duke@435 | 71 | return false; |
duke@435 | 72 | #endif /* COMPILER2 */ |
duke@435 | 73 | } |
duke@435 | 74 | *fr_addr = ret_frame; |
duke@435 | 75 | return true; |
duke@435 | 76 | } |
duke@435 | 77 | |
duke@435 | 78 | // nothing else to try |
duke@435 | 79 | return false; |
duke@435 | 80 | } |