Mercurial > projects > ldc

annotate druntime/src/gc/basic/gcalloc.d @ 1458:e0b2d67cfe7c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1458
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
1 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
2 * Contains OS-level allocation routines.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
3 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
4 * Copyright: Copyright Digital Mars 2005 - 2009.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
6 * Authors: Walter Bright, David Friedman, Sean Kelly
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
7 *
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
8 * Copyright Digital Mars 2005 - 2009.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
9 * Distributed under the Boost Software License, Version 1.0.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
10 * (See accompanying file LICENSE_1_0.txt or copy at
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
11 * http://www.boost.org/LICENSE_1_0.txt)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
12 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
13 module gc.gcalloc;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
14
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
15
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
16 version (Windows)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
17 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
18 private import core.sys.windows.windows;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
19
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
20 alias int pthread_t;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
21
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
22 pthread_t pthread_self()
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
23 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
24 return cast(pthread_t) GetCurrentThreadId();
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
25 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
26
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
27 //version = GC_Use_Alloc_Win32;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
28 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
29 else version (Posix)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
30 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
31 private import core.sys.posix.sys.mman;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
32 private import core.stdc.stdlib;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
33
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
34 //version = GC_Use_Alloc_MMap;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
35 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
36 else
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
37 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
38 private import core.stdc.stdlib;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
39
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
40 //version = GC_Use_Alloc_Malloc;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
41 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
42
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
43 /+
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
44 static if(is(typeof(VirtualAlloc)))
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
45 version = GC_Use_Alloc_Win32;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
46 else static if (is(typeof(mmap)))
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
47 version = GC_Use_Alloc_MMap;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
48 else static if (is(typeof(valloc)))
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
49 version = GC_Use_Alloc_Valloc;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
50 else static if (is(typeof(malloc)))
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
51 version = GC_Use_Alloc_Malloc;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
52 else static assert(false, "No supported allocation methods available.");
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
53 +/
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
54
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
55 static if (is(typeof(VirtualAlloc))) // version (GC_Use_Alloc_Win32)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
56 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
57 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
58 * Map memory.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
59 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
60 void *os_mem_map(size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
61 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
62 return VirtualAlloc(null, nbytes, MEM_RESERVE, PAGE_READWRITE);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
63 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
64
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
65
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
66 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
67 * Commit memory.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
68 * Returns:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
69 * 0 success
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
70 * !=0 failure
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
71 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
72 int os_mem_commit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
73 { void *p;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
74
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
75 p = VirtualAlloc(base + offset, nbytes, MEM_COMMIT, PAGE_READWRITE);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
76 return cast(int)(p is null);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
77 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
78
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
79
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
80 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
81 * Decommit memory.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
82 * Returns:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
83 * 0 success
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
84 * !=0 failure
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
85 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
86 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
87 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
88 return cast(int)(VirtualFree(base + offset, nbytes, MEM_DECOMMIT) == 0);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
89 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
90
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
91
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
92 /**
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
93 * Unmap memory allocated with os_mem_map().
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
94 * Memory must have already been decommitted.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
95 * Returns:
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
96 * 0 success
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
97 * !=0 failure
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
98 */
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
99 int os_mem_unmap(void *base, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
100 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
101 return cast(int)(VirtualFree(base, 0, MEM_RELEASE) == 0);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
102 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
103 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
104 else static if (is(typeof(mmap))) // else version (GC_Use_Alloc_MMap)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
105 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
106 void *os_mem_map(size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
107 { void *p;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
108
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
109 p = mmap(null, nbytes, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
110 return (p == MAP_FAILED) ? null : p;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
111 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
112
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
113
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
114 int os_mem_commit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
115 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
116 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
117 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
118
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
119
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
120 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
121 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
122 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
123 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
124
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
125
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
126 int os_mem_unmap(void *base, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
127 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
128 return munmap(base, nbytes);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
129 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
130 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
131 else static if (is(typeof(valloc))) // else version (GC_Use_Alloc_Valloc)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
132 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
133 void *os_mem_map(size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
134 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
135 return valloc(nbytes);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
136 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
137
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
138
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
139 int os_mem_commit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
140 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
141 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
142 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
143
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
144
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
145 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
146 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
147 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
148 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
149
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
150
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
151 int os_mem_unmap(void *base, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
152 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
153 free(base);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
154 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
155 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
156 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
157 else static if (is(typeof(malloc))) // else version (GC_Use_Alloc_Malloc)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
158 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
159 // NOTE: This assumes malloc granularity is at least (void*).sizeof. If
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
160 // (req_size + PAGESIZE) is allocated, and the pointer is rounded up
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
161 // to PAGESIZE alignment, there will be space for a void* at the end
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
162 // after PAGESIZE bytes used by the GC.
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
163
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
164
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
165 private import gcx : PAGESIZE;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
166
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
167
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
168 const size_t PAGE_MASK = PAGESIZE - 1;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
169
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
170
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
171 void *os_mem_map(size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
172 { byte *p, q;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
173 p = cast(byte *) malloc(nbytes + PAGESIZE);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
174 q = p + ((PAGESIZE - ((cast(size_t) p & PAGE_MASK))) & PAGE_MASK);
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
175 * cast(void**)(q + nbytes) = p;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
176 return q;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
177 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
178
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
179
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
180 int os_mem_commit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
181 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
182 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
183 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
184
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
185
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
186 int os_mem_decommit(void *base, size_t offset, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
187 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
188 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
189 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
190
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
191
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
192 int os_mem_unmap(void *base, size_t nbytes)
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
193 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
194 free( *cast(void**)( cast(byte*) base + nbytes ) );
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
195 return 0;
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
196 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
197 }
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
198 else
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
199 {
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
200 static assert(false, "No supported allocation methods available.");
e0b2d67cfe7c Added druntime (this should be removed once it works).
Robert Clipsham <robert@octarineparrot.com>
parents:
diff changeset
201 }