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1383
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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * Copyright 2010 Red Hat, Inc.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
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22 * have any questions.
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23 *
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24 */
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25
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26 #include "incls/_precompiled.incl"
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27 #include "incls/_stack_zero.cpp.incl"
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28
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29 void ZeroStack::handle_overflow(TRAPS) {
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30 JavaThread *thread = (JavaThread *) THREAD;
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31
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32 // Set up the frame anchor if it isn't already
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33 bool has_last_Java_frame = thread->has_last_Java_frame();
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34 if (!has_last_Java_frame) {
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1505
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35 intptr_t *sp = thread->zero_stack()->sp();
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1383
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36 ZeroFrame *frame = thread->top_zero_frame();
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37 while (frame) {
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38 if (frame->is_shark_frame())
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39 break;
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40
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41 if (frame->is_interpreter_frame()) {
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42 interpreterState istate =
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43 frame->as_interpreter_frame()->interpreter_state();
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44 if (istate->self_link() == istate)
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45 break;
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46 }
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47
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1505
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48 sp = ((intptr_t *) frame) + 1;
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1383
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49 frame = frame->next();
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50 }
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51
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52 if (frame == NULL)
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53 fatal("unrecoverable stack overflow");
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54
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1505
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55 thread->set_last_Java_frame(frame, sp);
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56 }
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57
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58 // Throw the exception
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59 switch (thread->thread_state()) {
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60 case _thread_in_Java:
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61 InterpreterRuntime::throw_StackOverflowError(thread);
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62 break;
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63
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64 case _thread_in_vm:
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65 Exceptions::throw_stack_overflow_exception(thread, __FILE__, __LINE__);
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66 break;
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67
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68 default:
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69 ShouldNotReachHere();
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70 }
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71
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72 // Reset the frame anchor if necessary
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73 if (!has_last_Java_frame)
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74 thread->reset_last_Java_frame();
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75 }
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1505
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76
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77 #ifndef PRODUCT
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78 void ZeroStack::zap(int c) {
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79 memset(_base, c, available_words() * wordSize);
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80 }
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81 #endif // PRODUCT
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