Mercurial > hg > truffle
annotate src/os_cpu/linux_sparc/vm/thread_linux_sparc.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | 126ea7725993 |
| children | f34d701e952e |
| rev | line source |
|---|---|
| 133 | 1 /* |
| 1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| 133 | 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. |
| 133 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "runtime/frame.inline.hpp" | |
| 27 #include "thread_linux.inline.hpp" | |
| 133 | 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, | |
| 33 bool isInJava) { | |
| 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 (!isInJava) { | |
| 40 // make_walkable flushes register windows and grabs last_Java_pc | |
| 41 // which can not be done if the ucontext sp matches last_Java_sp | |
| 42 // stack walking utilities assume last_Java_pc set if marked flushed | |
| 43 jt->frame_anchor()->make_walkable(jt); | |
| 44 } | |
| 45 | |
| 46 // If we have a walkable last_Java_frame, then we should use it | |
| 47 // even if isInJava == true. It should be more reliable than | |
| 48 // ucontext info. | |
| 49 if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) { | |
| 50 *fr_addr = jt->pd_last_frame(); | |
| 51 return true; | |
| 52 } | |
| 53 | |
| 54 ucontext_t* uc = (ucontext_t*) ucontext; | |
| 55 | |
| 56 // At this point, we don't have a walkable last_Java_frame, so | |
| 57 // we try to glean some information out of the ucontext. | |
| 58 intptr_t* ret_sp; | |
| 59 ExtendedPC addr = | |
| 60 os::fetch_frame_from_context(uc, &ret_sp, | |
| 61 NULL /* ret_fp only used on X86 */); | |
| 62 if (addr.pc() == NULL || ret_sp == NULL) { | |
| 63 // ucontext wasn't useful | |
| 64 return false; | |
| 65 } | |
| 66 | |
| 67 // we were running Java code when SIGPROF came in | |
| 68 if (isInJava) { | |
| 69 // If we have a last_Java_sp, then the SIGPROF signal caught us | |
| 70 // right when we were transitioning from _thread_in_Java to a new | |
| 71 // JavaThreadState. We use last_Java_sp instead of the sp from | |
| 72 // the ucontext since it should be more reliable. | |
| 73 if (jt->has_last_Java_frame()) { | |
| 74 ret_sp = jt->last_Java_sp(); | |
| 75 } | |
| 76 // Implied else: we don't have a last_Java_sp so we use what we | |
| 77 // got from the ucontext. | |
| 78 | |
| 79 frame ret_frame(ret_sp, frame::unpatchable, addr.pc()); | |
| 80 if (!ret_frame.safe_for_sender(jt)) { | |
| 81 // nothing else to try if the frame isn't good | |
| 82 return false; | |
| 83 } | |
| 84 *fr_addr = ret_frame; | |
| 85 return true; | |
| 86 } | |
| 87 | |
| 88 // At this point, we know we weren't running Java code. We might | |
| 89 // have a last_Java_sp, but we don't have a walkable frame. | |
| 90 // However, we might still be able to construct something useful | |
| 91 // if the thread was running native code. | |
| 92 if (jt->has_last_Java_frame()) { | |
| 93 assert(!jt->frame_anchor()->walkable(), "case covered above"); | |
| 94 | |
| 95 if (jt->thread_state() == _thread_in_native) { | |
| 96 frame ret_frame(jt->last_Java_sp(), frame::unpatchable, addr.pc()); | |
| 97 if (!ret_frame.safe_for_sender(jt)) { | |
| 98 // nothing else to try if the frame isn't good | |
| 99 return false; | |
| 100 } | |
| 101 *fr_addr = ret_frame; | |
| 102 return true; | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 // nothing else to try | |
| 107 return false; | |
| 108 } | |
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109 |
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110 void JavaThread::cache_global_variables() { } |
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111 |