Mercurial > hg > truffle
annotate src/os_cpu/linux_x86/vm/assembler_linux_x86.cpp @ 3766:c3f1170908be
7045330: G1: Simplify/fix the HeapRegionSeq class
7042285: G1: native memory leak during humongous object allocation
6804436: G1: heap region indices should be size_t
Summary: A series of fixes and improvements to the HeapRegionSeq class: a) replace the _regions growable array with a standard C array, b) avoid de-allocating / re-allocating HeapRegion instances when the heap shrinks / grows (fix for 7042285), c) introduce fast method to map address to HeapRegion via a "biased" array pointer, d) embed the _hrs object in G1CollectedHeap, instead of pointing to it via an indirection, e) assume that all the regions added to the HeapRegionSeq instance are contiguous, f) replace int's with size_t's for indexes (and expand that to HeapRegion as part of 6804436), g) remove unnecessary / unused methods, h) rename a couple of fields (_alloc_search_start and _seq_bottom), i) fix iterate_from() not to always start from index 0 irrespective of the region passed to it, j) add a verification method to check the HeapRegionSeq assumptions, k) always call the wrappers for _hrs.iterate(), _hrs_length(), and _hrs.at() from G1CollectedHeap, not those methods directly, and l) unify the code that expands the sequence (by either re-using or creating a new HeapRegion) and make it robust wrt to a HeapRegion allocation failing.
Reviewed-by: stefank, johnc, brutisso
author | tonyp |
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date | Fri, 10 Jun 2011 13:16:40 -0400 |
parents | f95d63e2154a |
children | 65dba8692db7 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1999, 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 "asm/assembler.hpp" | |
27 #include "assembler_x86.inline.hpp" | |
28 #include "runtime/os.hpp" | |
29 #include "runtime/threadLocalStorage.hpp" | |
0 | 30 |
304 | 31 #ifndef _LP64 |
0 | 32 void MacroAssembler::int3() { |
33 call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint))); | |
34 } | |
35 | |
36 void MacroAssembler::get_thread(Register thread) { | |
37 movl(thread, rsp); | |
38 shrl(thread, PAGE_SHIFT); | |
39 | |
40 ExternalAddress tls_base((address)ThreadLocalStorage::sp_map_addr()); | |
41 Address index(noreg, thread, Address::times_4); | |
42 ArrayAddress tls(tls_base, index); | |
43 | |
44 movptr(thread, tls); | |
45 } | |
304 | 46 #else |
47 void MacroAssembler::int3() { | |
48 call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint))); | |
49 } | |
50 | |
51 void MacroAssembler::get_thread(Register thread) { | |
52 // call pthread_getspecific | |
53 // void * pthread_getspecific(pthread_key_t key); | |
54 if (thread != rax) { | |
55 push(rax); | |
56 } | |
57 push(rdi); | |
58 push(rsi); | |
59 push(rdx); | |
60 push(rcx); | |
61 push(r8); | |
62 push(r9); | |
63 push(r10); | |
64 // XXX | |
65 mov(r10, rsp); | |
66 andq(rsp, -16); | |
67 push(r10); | |
68 push(r11); | |
69 | |
70 movl(rdi, ThreadLocalStorage::thread_index()); | |
71 call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific))); | |
72 | |
73 pop(r11); | |
74 pop(rsp); | |
75 pop(r10); | |
76 pop(r9); | |
77 pop(r8); | |
78 pop(rcx); | |
79 pop(rdx); | |
80 pop(rsi); | |
81 pop(rdi); | |
82 if (thread != rax) { | |
83 mov(thread, rax); | |
84 pop(rax); | |
85 } | |
86 } | |
87 #endif |