Mercurial > hg > graal-compiler
annotate src/os_cpu/linux_x86/vm/thread_linux_x86.cpp @ 2030:fb712ff22571
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
Summary: The concurrent marking thread can complete its operation and increment the full GC counter during a Full GC. This causes the nesting of increments to the start and end of Full GCs that we are expecting to be wrong. the fix is for the marking thread to join the suspendible thread set before incrementing the counter so that it's blocked until the Full GC (or any other safepoint) is finished. The change also includes some minor code cleanup (I renamed a parameter).
Reviewed-by: brutisso, ysr
| author | tonyp |
|---|---|
| date | Tue, 14 Dec 2010 16:19:44 -0500 |
| parents | f95d63e2154a |
| children | f34d701e952e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "runtime/frame.inline.hpp" | |
| 27 #include "thread_linux.inline.hpp" | |
| 0 | 28 |
| 29 // For Forte Analyzer AsyncGetCallTrace profiling support - thread is | |
| 30 // currently interrupted by SIGPROF | |
| 31 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, | |
| 32 void* ucontext, bool isInJava) { | |
| 33 | |
| 34 assert(Thread::current() == this, "caller must be current thread"); | |
| 35 assert(this->is_Java_thread(), "must be JavaThread"); | |
| 36 | |
| 37 JavaThread* jt = (JavaThread *)this; | |
| 38 | |
| 39 // If we have a last_Java_frame, then we should use it even if | |
| 40 // isInJava == true. It should be more reliable than ucontext info. | |
| 41 if (jt->has_last_Java_frame()) { | |
| 42 *fr_addr = jt->pd_last_frame(); | |
| 43 return true; | |
| 44 } | |
| 45 | |
| 46 // At this point, we don't have a last_Java_frame, so | |
| 47 // we try to glean some information out of the ucontext | |
| 48 // if we were running Java code when SIGPROF came in. | |
| 49 if (isInJava) { | |
| 50 ucontext_t* uc = (ucontext_t*) ucontext; | |
| 51 | |
| 52 intptr_t* ret_fp; | |
| 53 intptr_t* ret_sp; | |
| 54 ExtendedPC addr = os::Linux::fetch_frame_from_ucontext(this, uc, | |
| 55 &ret_sp, &ret_fp); | |
| 56 if (addr.pc() == NULL || ret_sp == NULL ) { | |
| 57 // ucontext wasn't useful | |
| 58 return false; | |
| 59 } | |
| 60 | |
| 61 frame ret_frame(ret_sp, ret_fp, addr.pc()); | |
| 62 if (!ret_frame.safe_for_sender(jt)) { | |
| 63 #ifdef COMPILER2 | |
| 64 // C2 uses ebp as a general register see if NULL fp helps | |
| 65 frame ret_frame2(ret_sp, NULL, addr.pc()); | |
| 66 if (!ret_frame2.safe_for_sender(jt)) { | |
| 67 // nothing else to try if the frame isn't good | |
| 68 return false; | |
| 69 } | |
| 70 ret_frame = ret_frame2; | |
| 71 #else | |
| 72 // nothing else to try if the frame isn't good | |
| 73 return false; | |
| 74 #endif /* COMPILER2 */ | |
| 75 } | |
| 76 *fr_addr = ret_frame; | |
| 77 return true; | |
| 78 } | |
| 79 | |
| 80 // nothing else to try | |
| 81 return false; | |
| 82 } | |
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83 |
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84 void JavaThread::cache_global_variables() { } |
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85 |