Mercurial > hg > truffle
annotate src/share/vm/runtime/frame.inline.hpp @ 1656:4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
Summary: G1 was not handling explicit GCs correctly in many ways. It does now. See the CR for the list of improvements contained in this changeset.
Reviewed-by: iveresov, ysr, johnc
author | tonyp |
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date | Mon, 28 Jun 2010 14:13:17 -0400 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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parents:
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20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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parents:
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
605 | 25 // This file holds platform-independent bodies of inline functions for frames. |
0 | 26 |
27 // Note: The bcx usually contains the bcp; however during GC it contains the bci | |
28 // (changed by gc_prologue() and gc_epilogue()) to be methodOop position | |
29 // independent. These accessors make sure the correct value is returned | |
30 // by testing the range of the bcx value. bcp's are guaranteed to be above | |
31 // max_method_code_size, since methods are always allocated in OldSpace and | |
32 // Eden is allocated before OldSpace. | |
33 // | |
34 // The bcp is accessed sometimes during GC for ArgumentDescriptors; than | |
35 // the correct translation has to be performed (was bug). | |
36 | |
37 inline bool frame::is_bci(intptr_t bcx) { | |
38 #ifdef _LP64 | |
39 return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ; | |
40 #else | |
41 return 0 <= bcx && bcx <= max_method_code_size; | |
42 #endif | |
43 } | |
44 | |
45 inline bool frame::is_entry_frame() const { | |
46 return StubRoutines::returns_to_call_stub(pc()); | |
47 } | |
48 | |
49 inline bool frame::is_first_frame() const { | |
50 return is_entry_frame() && entry_frame_is_first(); | |
51 } | |
52 | |
53 // here are the platform-dependent bodies: | |
54 | |
55 # include "incls/_frame_pd.inline.hpp.incl" |