xref: /aoo42x/main/sal/rtl/source/alloc_global.c (revision 787e1130)
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21 
22 
23 
24 #include "rtl/alloc.h"
25 #include "alloc_impl.h"
26 
27 #ifndef INCLUDED_STRING_H
28 #include <string.h>
29 #define INCLUDED_STRING_H
30 #endif
31 
32 #if !defined(FORCE_SYSALLOC)
33 
34 /* ================================================================= *
35  *
36  * custom allocator includes.
37  *
38  * ================================================================= */
39 
40 #ifndef INCLUDED_STDIO_H
41 #include <stdio.h>
42 #define INCLUDED_STDIO_H
43 #endif
44 #include "internal/once.h"
45 #include "sal/macros.h"
46 #include "osl/diagnose.h"
47 
48 /* ================================================================= *
49  *
50  * custom allocator internals.
51  *
52  * ================================================================= */
53 
54 static const sal_Size g_alloc_sizes[] =
55 {
56 	/* powers of 2**(1/4) */
57 	4 *    4,           6 *    4,
58 	4 *    8, 5 *    8, 6 *    8, 7 *    8,
59 	4 *   16, 5 *   16, 6 *   16, 7 *   16,
60 	4 *   32, 5 *   32, 6 *   32, 7 *   32,
61 	4 *   64, 5 *   64, 6 *   64, 7 *   64,
62 	4 *  128, 5 *  128, 6 *  128, 7 *  128,
63 	4 *  256, 5 *  256, 6 *  256, 7 *  256,
64 	4 *  512, 5 *  512, 6 *  512, 7 *  512,
65 	4 * 1024, 5 * 1024, 6 * 1024, 7 * 1024,
66 	4 * 2048, 5 * 2048, 6 * 2048, 7 * 2048,
67 	4 * 4096
68 };
69 
70 #define RTL_MEMORY_CACHED_LIMIT 4 * 4096
71 #define RTL_MEMORY_CACHED_SIZES (sizeof(g_alloc_sizes) / sizeof(g_alloc_sizes[0]))
72 
73 static rtl_cache_type * g_alloc_caches[RTL_MEMORY_CACHED_SIZES] =
74 {
75 	0,
76 };
77 
78 #ifdef NEED_ALIGN16
79 #define RTL_MEMALIGN       16
80 #define RTL_MEMALIGN_SHIFT 4
81 #else
82 #define RTL_MEMALIGN       8
83 #define RTL_MEMALIGN_SHIFT 3
84 #endif
85 
86 static rtl_cache_type * g_alloc_table[RTL_MEMORY_CACHED_LIMIT >> RTL_MEMALIGN_SHIFT] =
87 {
88 	0,
89 };
90 
91 static rtl_arena_type * gp_alloc_arena = NULL;
92 
93 /* ================================================================= *
94  *
95  * custom allocator initialization / finalization.
96  *
97  * ================================================================= */
98 
99 static void
rtl_memory_once_init(void)100 rtl_memory_once_init (void)
101 {
102 	{
103 		/* global memory arena */
104 		OSL_ASSERT(gp_alloc_arena == NULL);
105 
106 		gp_alloc_arena = rtl_arena_create (
107 			"rtl_alloc_arena",
108 			2048,     /* quantum */
109 			0,        /* w/o quantum caching */
110 			0,        /* default source */
111 			rtl_arena_alloc,
112 			rtl_arena_free,
113 			0         /* flags */
114 		);
115 		OSL_ASSERT(gp_alloc_arena != NULL);
116 	}
117 	{
118 		sal_Size size;
119 		int i, n = RTL_MEMORY_CACHED_SIZES;
120 
121 		for (i = 0; i < n; i++)
122 		{
123 			char name[RTL_CACHE_NAME_LENGTH + 1];
124 			(void) snprintf (name, sizeof(name), "rtl_alloc_%lu", g_alloc_sizes[i]);
125 			g_alloc_caches[i] = rtl_cache_create (name, g_alloc_sizes[i], 0, NULL, NULL, NULL, NULL, NULL, 0);
126 		}
127 
128 		size = RTL_MEMALIGN;
129 		for (i = 0; i < n; i++)
130 		{
131 			while (size <= g_alloc_sizes[i])
132 			{
133 				g_alloc_table[(size - 1) >> RTL_MEMALIGN_SHIFT] = g_alloc_caches[i];
134 				size += RTL_MEMALIGN;
135 			}
136 		}
137 	}
138 }
139 
140 static int
rtl_memory_init(void)141 rtl_memory_init (void)
142 {
143 	static sal_once_type g_once = SAL_ONCE_INIT;
144 	SAL_ONCE(&g_once, rtl_memory_once_init);
145 	return (gp_alloc_arena != NULL);
146 }
147 
148 /* ================================================================= */
149 
150 /*
151   Issue http://udk.openoffice.org/issues/show_bug.cgi?id=92388
152 
153   Mac OS X does not seem to support "__cxa__atexit", thus leading
154   to the situation that "__attribute__((destructor))__" functions
155   (in particular "rtl_{memory|cache|arena}_fini") become called
156   _before_ global C++ object d'tors.
157 
158   Delegated the call to "rtl_memory_fini()" into a dummy C++ object,
159   see alloc_fini.cxx .
160 */
161 #if defined(__GNUC__) && !defined(MACOSX)
162 static void rtl_memory_fini (void) __attribute__((destructor));
163 #elif defined(__SUNPRO_C) || defined(__SUNPRO_CC)
164 #pragma fini(rtl_memory_fini)
165 static void rtl_memory_fini (void);
166 #endif /* __GNUC__ || __SUNPRO_C */
167 
168 void
rtl_memory_fini(void)169 rtl_memory_fini (void)
170 {
171 	int i, n;
172 
173 	/* clear g_alloc_table */
174 	memset (g_alloc_table, 0, sizeof(g_alloc_table));
175 
176 	/* cleanup g_alloc_caches */
177 	for (i = 0, n = RTL_MEMORY_CACHED_SIZES; i < n; i++)
178 	{
179 		if (g_alloc_caches[i] != NULL)
180 		{
181 			rtl_cache_destroy (g_alloc_caches[i]);
182 			g_alloc_caches[i] = NULL;
183 		}
184 	}
185 
186 	/* cleanup gp_alloc_arena */
187 	if (gp_alloc_arena != NULL)
188 	{
189 		rtl_arena_destroy (gp_alloc_arena);
190 		gp_alloc_arena = NULL;
191 	}
192 }
193 
194 /* ================================================================= *
195  *
196  * custom allocator implemenation.
197  *
198  * ================================================================= */
199 
200 void *
rtl_allocateMemory(sal_Size n)201 SAL_CALL rtl_allocateMemory (sal_Size n) SAL_THROW_EXTERN_C()
202 {
203 	void * p = 0;
204 	if (n > 0)
205 	{
206 		char *     addr;
207 		sal_Size   size = RTL_MEMORY_ALIGN(n + RTL_MEMALIGN, RTL_MEMALIGN);
208 
209 		OSL_ASSERT(RTL_MEMALIGN >= sizeof(sal_Size));
210 		if (n >= SAL_MAX_SIZE - (RTL_MEMALIGN + RTL_MEMALIGN - 1))
211 		{
212 			/* requested size too large for roundup alignment */
213 			return 0;
214 		}
215 
216 try_alloc:
217 		if (size <= RTL_MEMORY_CACHED_LIMIT)
218 			addr = (char*)rtl_cache_alloc(g_alloc_table[(size - 1) >> RTL_MEMALIGN_SHIFT]);
219 		else
220 			addr = (char*)rtl_arena_alloc (gp_alloc_arena, &size);
221 
222 		if (addr != 0)
223 		{
224 			((sal_Size*)(addr))[0] = size;
225 			p = addr + RTL_MEMALIGN;
226 		}
227 		else if (gp_alloc_arena == 0)
228 		{
229 			if (rtl_memory_init())
230 			{
231 				/* try again */
232 				goto try_alloc;
233 			}
234 		}
235 	}
236 	return (p);
237 }
238 
239 /* ================================================================= */
240 
rtl_freeMemory(void * p)241 void SAL_CALL rtl_freeMemory (void * p) SAL_THROW_EXTERN_C()
242 {
243 	if (p != 0)
244 	{
245 		char *   addr = (char*)(p) - RTL_MEMALIGN;
246 		sal_Size size = ((sal_Size*)(addr))[0];
247 
248 		if (size <= RTL_MEMORY_CACHED_LIMIT)
249 			rtl_cache_free(g_alloc_table[(size - 1) >> RTL_MEMALIGN_SHIFT], addr);
250 		else
251 			rtl_arena_free (gp_alloc_arena, addr, size);
252 	}
253 }
254 
255 /* ================================================================= */
256 
rtl_reallocateMemory(void * p,sal_Size n)257 void * SAL_CALL rtl_reallocateMemory (void * p, sal_Size n) SAL_THROW_EXTERN_C()
258 {
259 	if (n > 0)
260 	{
261 		if (p != 0)
262 		{
263 			void *   p_old = p;
264 			sal_Size n_old = ((sal_Size*)( (char*)(p) - RTL_MEMALIGN  ))[0] - RTL_MEMALIGN;
265 
266 			p = rtl_allocateMemory (n);
267 			if (p != 0)
268 			{
269 				memcpy (p, p_old, SAL_MIN(n, n_old));
270 				rtl_freeMemory (p_old);
271 			}
272 		}
273 		else
274 		{
275 			p = rtl_allocateMemory (n);
276 		}
277 	}
278 	else if (p != 0)
279 	{
280 		rtl_freeMemory (p), p = 0;
281 	}
282 	return (p);
283 }
284 
285 #else  /* FORCE_SYSALLOC */
286 
287 /* ================================================================= *
288  *
289  * system allocator includes.
290  *
291  * ================================================================= */
292 
293 #ifndef INCLUDED_STDLIB_H
294 #include <stdlib.h>
295 #define INCLUDED_STDLIB_H
296 #endif
297 
298 /* ================================================================= *
299  *
300  * system allocator implemenation.
301  *
302  * ================================================================= */
303 
rtl_allocateMemory(sal_Size n)304 void * SAL_CALL rtl_allocateMemory (sal_Size n)
305 {
306 	return malloc (n);
307 }
308 
309 /* ================================================================= */
310 
rtl_freeMemory(void * p)311 void SAL_CALL rtl_freeMemory (void * p)
312 {
313 	free (p);
314 }
315 
316 /* ================================================================= */
317 
rtl_reallocateMemory(void * p,sal_Size n)318 void * SAL_CALL rtl_reallocateMemory (void * p, sal_Size n)
319 {
320 	return realloc (p, n);
321 }
322 
323 /* ================================================================= */
324 
325 void
rtl_memory_fini(void)326 rtl_memory_fini (void)
327 {
328 	/* nothing to do */
329 }
330 
331 #endif /* FORCE_SYSALLOC */
332 
333 /* ================================================================= *
334  *
335  * rtl_(allocate|free)ZeroMemory() implemenation.
336  *
337  * ================================================================= */
338 
rtl_allocateZeroMemory(sal_Size n)339 void * SAL_CALL rtl_allocateZeroMemory (sal_Size n) SAL_THROW_EXTERN_C()
340 {
341 	void * p = rtl_allocateMemory (n);
342 	if (p != 0)
343 		memset (p, 0, n);
344 	return (p);
345 }
346 
347 /* ================================================================= */
348 
rtl_freeZeroMemory(void * p,sal_Size n)349 void SAL_CALL rtl_freeZeroMemory (void * p, sal_Size n) SAL_THROW_EXTERN_C()
350 {
351 	if (p != 0)
352 	{
353 		memset (p, 0, n);
354 		rtl_freeMemory (p);
355 	}
356 }
357 
358 /* ================================================================= */
359