src/os_cpu/linux_zero/vm/thread_linux_zero.hpp

Tue, 23 Nov 2010 13:22:55 -0800

author
stefank
date
Tue, 23 Nov 2010 13:22:55 -0800
changeset 2314
f95d63e2154a
parent 1907
c18cbe5936b8
child 6876
710a3c8b516e
child 9860
6c8e5745df03
permissions
-rw-r--r--

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

     1 /*
     2  * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
     3  * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     5  *
     6  * This code is free software; you can redistribute it and/or modify it
     7  * under the terms of the GNU General Public License version 2 only, as
     8  * published by the Free Software Foundation.
     9  *
    10  * This code is distributed in the hope that it will be useful, but WITHOUT
    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    13  * version 2 for more details (a copy is included in the LICENSE file that
    14  * accompanied this code).
    15  *
    16  * You should have received a copy of the GNU General Public License version
    17  * 2 along with this work; if not, write to the Free Software Foundation,
    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    19  *
    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    21  * or visit www.oracle.com if you need additional information or have any
    22  * questions.
    23  *
    24  */
    26 #ifndef OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
    27 #define OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP
    29  private:
    30   ZeroStack  _zero_stack;
    31   ZeroFrame* _top_zero_frame;
    33   void pd_initialize() {
    34     _top_zero_frame = NULL;
    35   }
    37  public:
    38   ZeroStack *zero_stack() {
    39     return &_zero_stack;
    40   }
    42  public:
    43   ZeroFrame *top_zero_frame() {
    44     return _top_zero_frame;
    45   }
    46   void push_zero_frame(ZeroFrame *frame) {
    47     *(ZeroFrame **) frame = _top_zero_frame;
    48     _top_zero_frame = frame;
    49   }
    50   void pop_zero_frame() {
    51     zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1);
    52     _top_zero_frame = *(ZeroFrame **) _top_zero_frame;
    53   }
    55  public:
    56   static ByteSize zero_stack_offset() {
    57     return byte_offset_of(JavaThread, _zero_stack);
    58   }
    59   static ByteSize top_zero_frame_offset() {
    60     return byte_offset_of(JavaThread, _top_zero_frame);
    61   }
    63  public:
    64   void record_base_of_stack_pointer() {
    65     assert(top_zero_frame() == NULL, "junk on stack prior to Java call");
    66   }
    67   void set_base_of_stack_pointer(intptr_t* base_sp) {
    68     assert(base_sp == NULL, "should be");
    69     assert(top_zero_frame() == NULL, "junk on stack after Java call");
    70   }
    72  public:
    73   void set_last_Java_frame() {
    74     set_last_Java_frame(top_zero_frame(), zero_stack()->sp());
    75   }
    76   void reset_last_Java_frame() {
    77     frame_anchor()->zap();
    78   }
    79   void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) {
    80     frame_anchor()->set(sp, NULL, fp);
    81   }
    83  public:
    84   ZeroFrame* last_Java_fp() {
    85     return frame_anchor()->last_Java_fp();
    86   }
    88  private:
    89   frame pd_last_frame() {
    90     assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
    91     return frame(last_Java_fp(), last_Java_sp());
    92   }
    94  public:
    95   static ByteSize last_Java_fp_offset() {
    96     return byte_offset_of(JavaThread, _anchor) +
    97       JavaFrameAnchor::last_Java_fp_offset();
    98   }
   100  public:
   101   // Check for pending suspend requests and pending asynchronous
   102   // exceptions.  There are separate accessors for these, but
   103   // _suspend_flags is volatile so using them would be unsafe.
   104   bool has_special_condition_for_native_trans() {
   105     return _suspend_flags != 0;
   106   }
   108  public:
   109   bool pd_get_top_frame_for_signal_handler(frame* fr_addr,
   110                                            void* ucontext,
   111                                            bool isInJava) {
   112     ShouldNotCallThis();
   113   }
   115   // These routines are only used on cpu architectures that
   116   // have separate register stacks (Itanium).
   117   static bool register_stack_overflow() { return false; }
   118   static void enable_register_stack_guard() {}
   119   static void disable_register_stack_guard() {}
   121 #endif // OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP

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