Mercurial > projects > ldc

annotate druntime/src/gc/basic/gcalloc.d @ 759:d3eb054172f9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added copy of druntime from DMD 2.020 modified for LDC.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Tue, 11 Nov 2008 01:52:37 +0100
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
759
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
1 /**
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
2 * This module contains allocation functions for the garbage collector.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
3 *
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
4 * Copyright: Copyright (C) 2005-2006 Digital Mars, www.digitalmars.com.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
5 * All rights reserved.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
6 * License:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
7 * This software is provided 'as-is', without any express or implied
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
8 * warranty. In no event will the authors be held liable for any damages
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
9 * arising from the use of this software.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
10 *
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
11 * Permission is granted to anyone to use this software for any purpose,
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
12 * including commercial applications, and to alter it and redistribute it
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
13 * freely, in both source and binary form, subject to the following
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
14 * restrictions:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
15 *
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
16 * o The origin of this software must not be misrepresented; you must not
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
17 * claim that you wrote the original software. If you use this software
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
18 * in a product, an acknowledgment in the product documentation would be
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
19 * appreciated but is not required.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
20 * o Altered source versions must be plainly marked as such, and must not
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
21 * be misrepresented as being the original software.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
22 * o This notice may not be removed or altered from any source
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
23 * distribution.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
24 * Authors: Walter Bright, David Friedman, Sean Kelly
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
25 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
26
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
27 module gc.gcalloc;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
28
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
29
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
30 version (Windows)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
31 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
32 private import sys.windows.windows;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
33
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
34 alias int pthread_t;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
35
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
36 pthread_t pthread_self()
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
37 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
38 return cast(pthread_t) GetCurrentThreadId();
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
39 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
40
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
41 //version = GC_Use_Alloc_Win32;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
42 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
43 else version (Posix)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
44 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
45 private import stdc.posix.sys.mman;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
46 private import stdc.stdlib;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
47
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
48 //version = GC_Use_Alloc_MMap;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
49 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
50 else
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
51 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
52 private import stdc.stdlib;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
53
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
54 //version = GC_Use_Alloc_Malloc;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
55 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
56
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
57 /+
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
58 static if(is(typeof(VirtualAlloc)))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
59 version = GC_Use_Alloc_Win32;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
60 else static if (is(typeof(mmap)))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
61 version = GC_Use_Alloc_MMap;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
62 else static if (is(typeof(valloc)))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
63 version = GC_Use_Alloc_Valloc;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
64 else static if (is(typeof(malloc)))
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
65 version = GC_Use_Alloc_Malloc;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
66 else static assert(false, "No supported allocation methods available.");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
67 +/
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
68
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
69 static if (is(typeof(VirtualAlloc))) // version (GC_Use_Alloc_Win32)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
70 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
71 /**
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
72 * Map memory.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
73 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
74 void *os_mem_map(size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
75 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
76 return VirtualAlloc(null, nbytes, MEM_RESERVE, PAGE_READWRITE);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
77 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
78
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
79
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
80 /**
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
81 * Commit memory.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
82 * Returns:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
83 * 0 success
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
84 * !=0 failure
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
85 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
86 int os_mem_commit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
87 { void *p;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
88
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
89 p = VirtualAlloc(base + offset, nbytes, MEM_COMMIT, PAGE_READWRITE);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
90 return cast(int)(p is null);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
91 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
92
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
93
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
94 /**
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
95 * Decommit memory.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
96 * Returns:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
97 * 0 success
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
98 * !=0 failure
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
99 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
100 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
101 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
102 return cast(int)(VirtualFree(base + offset, nbytes, MEM_DECOMMIT) == 0);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
103 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
104
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
105
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
106 /**
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
107 * Unmap memory allocated with os_mem_map().
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
108 * Memory must have already been decommitted.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
109 * Returns:
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
110 * 0 success
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
111 * !=0 failure
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
112 */
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
113 int os_mem_unmap(void *base, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
114 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
115 return cast(int)(VirtualFree(base, 0, MEM_RELEASE) == 0);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
116 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
117 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
118 else static if (is(typeof(mmap))) // else version (GC_Use_Alloc_MMap)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
119 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
120 void *os_mem_map(size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
121 { void *p;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
122
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
123 p = mmap(null, nbytes, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
124 return (p == MAP_FAILED) ? null : p;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
125 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
126
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
127
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
128 int os_mem_commit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
129 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
130 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
131 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
132
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
133
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
134 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
135 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
136 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
137 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
138
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
139
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
140 int os_mem_unmap(void *base, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
141 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
142 return munmap(base, nbytes);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
143 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
144 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
145 else static if (is(typeof(valloc))) // else version (GC_Use_Alloc_Valloc)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
146 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
147 void *os_mem_map(size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
148 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
149 return valloc(nbytes);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
150 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
151
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
152
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
153 int os_mem_commit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
154 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
155 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
156 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
157
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
158
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
159 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
160 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
161 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
162 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
163
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
164
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
165 int os_mem_unmap(void *base, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
166 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
167 free(base);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
168 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
169 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
170 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
171 else static if (is(typeof(malloc))) // else version (GC_Use_Alloc_Malloc)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
172 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
173 // NOTE: This assumes malloc granularity is at least (void*).sizeof. If
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
174 // (req_size + PAGESIZE) is allocated, and the pointer is rounded up
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
175 // to PAGESIZE alignment, there will be space for a void* at the end
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
176 // after PAGESIZE bytes used by the GC.
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
177
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
178
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
179 private import gcx : PAGESIZE;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
180
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
181
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
182 const size_t PAGE_MASK = PAGESIZE - 1;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
183
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
184
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
185 void *os_mem_map(size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
186 { byte *p, q;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
187 p = cast(byte *) malloc(nbytes + PAGESIZE);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
188 q = p + ((PAGESIZE - ((cast(size_t) p & PAGE_MASK))) & PAGE_MASK);
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
189 * cast(void**)(q + nbytes) = p;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
190 return q;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
191 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
192
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
193
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
194 int os_mem_commit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
195 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
196 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
197 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
198
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
199
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
200 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
201 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
202 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
203 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
204
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
205
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
206 int os_mem_unmap(void *base, size_t nbytes)
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
207 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
208 free( *cast(void**)( cast(byte*) base + nbytes ) );
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
209 return 0;
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
210 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
211 }
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
212 else
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
213 {
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
214 static assert(false, "No supported allocation methods available.");
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
diff changeset
215 }