Mercurial > hg > graal-compiler
view src/os_cpu/bsd_x86/vm/thread_bsd_x86.cpp @ 5020:77f816847d91
some more changes to inlining debug output
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Fri, 02 Mar 2012 17:52:12 -0800 |
parents | f08d439fab8c |
children | f34d701e952e |
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/* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "runtime/frame.inline.hpp" #include "thread_bsd.inline.hpp" // For Forte Analyzer AsyncGetCallTrace profiling support - thread is // currently interrupted by SIGPROF bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava) { assert(Thread::current() == this, "caller must be current thread"); assert(this->is_Java_thread(), "must be JavaThread"); JavaThread* jt = (JavaThread *)this; // If we have a last_Java_frame, then we should use it even if // isInJava == true. It should be more reliable than ucontext info. if (jt->has_last_Java_frame()) { *fr_addr = jt->pd_last_frame(); return true; } // At this point, we don't have a last_Java_frame, so // we try to glean some information out of the ucontext // if we were running Java code when SIGPROF came in. if (isInJava) { ucontext_t* uc = (ucontext_t*) ucontext; intptr_t* ret_fp; intptr_t* ret_sp; ExtendedPC addr = os::Bsd::fetch_frame_from_ucontext(this, uc, &ret_sp, &ret_fp); if (addr.pc() == NULL || ret_sp == NULL ) { // ucontext wasn't useful return false; } frame ret_frame(ret_sp, ret_fp, addr.pc()); if (!ret_frame.safe_for_sender(jt)) { #ifdef COMPILER2 // C2 uses ebp as a general register see if NULL fp helps frame ret_frame2(ret_sp, NULL, addr.pc()); if (!ret_frame2.safe_for_sender(jt)) { // nothing else to try if the frame isn't good return false; } ret_frame = ret_frame2; #else // nothing else to try if the frame isn't good return false; #endif /* COMPILER2 */ } *fr_addr = ret_frame; return true; } // nothing else to try return false; } void JavaThread::cache_global_variables() { }