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comparison lphobos/gc/gcx.d @ 131:5825d48b27d1 trunk

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[svn r135] * Merged DMD 1.025 * * Fixed a minor linking order mishap * * Added an command line option -annotate * * Fixed some problems with running optimizations * * Added std.stdio and dependencies to lphobos (still not 100% working, but compiles and links) * * Fixed problems with passing aggregate types to variadic functions * * Added initial code towards full GC support, currently based on malloc and friends, not all the runtime calls the GC yet for memory * * Fixed problems with resolving nested function context pointers for some heavily nested cases * * Redid function argument passing + other minor code cleanups, still lots to do on this end... *
author lindquist
date Fri, 04 Jan 2008 01:38:42 +0100
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children 373489eeaf90
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130:a7dfa0ed966c 131:5825d48b27d1
1 /*
2 * Copyright (C) 2004 by Digital Mars, www.digitalmars.com
3 * Written by Walter Bright
4 *
5 * This software is provided 'as-is', without any express or implied
6 * warranty. In no event will the authors be held liable for any damages
7 * arising from the use of this software.
8 *
9 * Permission is granted to anyone to use this software for any purpose,
10 * including commercial applications, and to alter it and redistribute it
11 * freely, subject to the following restrictions:
12 *
13 * o The origin of this software must not be misrepresented; you must not
14 * claim that you wrote the original software. If you use this software
15 * in a product, an acknowledgment in the product documentation would be
16 * appreciated but is not required.
17 * o Altered source versions must be plainly marked as such, and must not
18 * be misrepresented as being the original software.
19 * o This notice may not be removed or altered from any source
20 * distribution.
21 */
22
23 // D Garbage Collector stub to prevent linking in gc
24
25 /*
26 * Modified for use as the preliminary GC for LLVMDC (LLVM D Compiler)
27 * by Tomas Lindquist Olsen, Dec 2007
28 */
29
30 module gcx;
31
32 debug=PRINTF;
33
34 /***************************************************/
35
36
37 version (Win32)
38 {
39 import win32;
40 }
41
42 version (linux)
43 {
44 import gclinux;
45 }
46
47 import gcstats;
48 import stdc = std.c.stdlib;
49
50
51 //alias GC* gc_t;
52 alias GC gc_t;
53
54 //struct GCStats { }
55
56 /* ============================ GC =============================== */
57
58
59 //alias int size_t;
60 alias void (*GC_FINALIZER)(void *p, bool dummy);
61
62 const uint GCVERSION = 1; // increment every time we change interface
63 // to GC.
64
65 class GC
66 {
67 uint gcversion = GCVERSION;
68
69 void *gcx; // implementation
70
71 void initialize()
72 {
73 debug(PRINTF) printf("GC initialize()\n");
74 }
75
76
77 void Dtor()
78 {
79 debug(PRINTF) printf("GC Dtor()\n");
80 }
81
82 invariant
83 {
84 debug(PRINTF) printf("GC invariant()\n");
85 }
86
87 void *malloc(size_t size)
88 {
89 debug(PRINTF) printf("GC malloc()\n");
90 return malloc(size);
91 }
92
93 void *mallocNoSync(size_t size)
94 {
95 debug(PRINTF) printf("GC mallocNoSync()\n");
96 return malloc(size);
97 }
98
99
100 void *calloc(size_t size, size_t n)
101 {
102 debug(PRINTF) printf("GC calloc()\n");
103 return calloc(n, size);
104 }
105
106
107 void *realloc(void *p, size_t size)
108 {
109 debug(PRINTF) printf("GC realloc()\n");
110 return realloc(p, size);
111 }
112
113
114 void free(void *p)
115 {
116 debug(PRINTF) printf("GC free()\n");
117 stdc.free(p);
118 }
119
120 size_t capacity(void *p)
121 {
122 debug(PRINTF) printf("GC capacity()\n");
123 return 0;
124 }
125
126 void check(void *p)
127 {
128 debug(PRINTF) printf("GC check()\n");
129 }
130
131
132 void setStackBottom(void *p)
133 {
134 debug(PRINTF) printf("GC setStackBottom()\n");
135 }
136
137 static void scanStaticData(gc_t g)
138 {
139 void *pbot;
140 void *ptop;
141 uint nbytes;
142
143 debug(PRINTF) printf("GC scanStaticData()\n");
144 //debug(PRINTF) printf("+GC.scanStaticData()\n");
145 os_query_staticdataseg(&pbot, &nbytes);
146 ptop = pbot + nbytes;
147 g.addRange(pbot, ptop);
148 //debug(PRINTF) printf("-GC.scanStaticData()\n");
149 }
150
151 static void unscanStaticData(gc_t g)
152 {
153 void *pbot;
154 uint nbytes;
155
156 debug(PRINTF) printf("GC unscanStaticData()\n");
157 os_query_staticdataseg(&pbot, &nbytes);
158 g.removeRange(pbot);
159 }
160
161
162 void addRoot(void *p) // add p to list of roots
163 {
164 debug(PRINTF) printf("GC addRoot()\n");
165 }
166
167 void removeRoot(void *p) // remove p from list of roots
168 {
169 debug(PRINTF) printf("GC removeRoot()\n");
170 }
171
172 void addRange(void *pbot, void *ptop) // add range to scan for roots
173 {
174 debug(PRINTF) printf("GC addRange()\n");
175 }
176
177 void removeRange(void *pbot) // remove range
178 {
179 debug(PRINTF) printf("GC removeRange()\n");
180 }
181
182 void fullCollect() // do full garbage collection
183 {
184 debug(PRINTF) printf("GC fullCollect()\n");
185 }
186
187 void fullCollectNoStack() // do full garbage collection
188 {
189 debug(PRINTF) printf("GC fullCollectNoStack()\n");
190 }
191
192 void genCollect() // do generational garbage collection
193 {
194 debug(PRINTF) printf("GC genCollect()\n");
195 }
196
197 void minimize() // minimize physical memory usage
198 {
199 debug(PRINTF) printf("GC minimize()\n");
200 }
201
202 void setFinalizer(void *p, GC_FINALIZER pFn)
203 {
204 debug(PRINTF) printf("GC setFinalizer()\n");
205 }
206
207 void enable()
208 {
209 debug(PRINTF) printf("GC enable()\n");
210 }
211
212 void disable()
213 {
214 debug(PRINTF) printf("GC disable()\n");
215 }
216
217 void getStats(out GCStats stats)
218 {
219 debug(PRINTF) printf("GC getStats()\n");
220 }
221
222 void hasPointers(void* p)
223 {
224 debug(PRINTF) printf("GC hasPointers()\n");
225 }
226
227 void hasNoPointers(void* p)
228 {
229 debug(PRINTF) printf("GC hasNoPointers()\n");
230 }
231
232 void setV1_0()
233 {
234 debug(PRINTF) printf("GC setV1_0()\n");
235 assert(0);
236 }
237
238 size_t extend(void* p, size_t minsize, size_t maxsize)
239 {
240 debug(PRINTF) printf("GC extend()\n");
241 assert(0);
242 }
243 }