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-rw-r--r--libraries/eina/src/modules/mp/chained_pool/Makefile.am30
-rw-r--r--libraries/eina/src/modules/mp/chained_pool/Makefile.in644
-rw-r--r--libraries/eina/src/modules/mp/chained_pool/eina_chained_mempool.c547
3 files changed, 1221 insertions, 0 deletions
diff --git a/libraries/eina/src/modules/mp/chained_pool/Makefile.am b/libraries/eina/src/modules/mp/chained_pool/Makefile.am
new file mode 100644
index 0000000..815bab7
--- /dev/null
+++ b/libraries/eina/src/modules/mp/chained_pool/Makefile.am
@@ -0,0 +1,30 @@
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diff --git a/libraries/eina/src/modules/mp/chained_pool/Makefile.in b/libraries/eina/src/modules/mp/chained_pool/Makefile.in
new file mode 100644
index 0000000..b728672
--- /dev/null
+++ b/libraries/eina/src/modules/mp/chained_pool/Makefile.in
@@ -0,0 +1,644 @@
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7# This Makefile.in is free software; the Free Software Foundation
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9# with or without modifications, as long as this notice is preserved.
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476distclean-tags:
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504 test -f "$(distdir)/$$file" \
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642# Tell versions [3.59,3.63) of GNU make to not export all variables.
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diff --git a/libraries/eina/src/modules/mp/chained_pool/eina_chained_mempool.c b/libraries/eina/src/modules/mp/chained_pool/eina_chained_mempool.c
new file mode 100644
index 0000000..009b62b
--- /dev/null
+++ b/libraries/eina/src/modules/mp/chained_pool/eina_chained_mempool.c
@@ -0,0 +1,547 @@
1/* EINA - EFL data type library
2 * Copyright (C) 2008-2010 Cedric BAIL, Vincent Torri
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library;
16 * if not, see <http://www.gnu.org/licenses/>.
17 */
18
19#ifdef HAVE_CONFIG_H
20# include "config.h"
21#endif
22
23#include <stdlib.h>
24#include <string.h>
25
26#ifdef EFL_HAVE_POSIX_THREADS
27#include <pthread.h>
28
29# ifdef EFL_DEBUG_THREADS
30# include <assert.h>
31# endif
32#endif
33
34#ifdef EFL_HAVE_WIN32_THREADS
35# define WIN32_LEAN_AND_MEAN
36# include <windows.h>
37# undef WIN32_LEAN_AND_MEAN
38#endif
39
40#include "eina_inlist.h"
41#include "eina_error.h"
42#include "eina_module.h"
43#include "eina_mempool.h"
44#include "eina_trash.h"
45#include "eina_rbtree.h"
46#include "eina_lock.h"
47
48#include "eina_private.h"
49
50#ifndef NVALGRIND
51# include <valgrind/memcheck.h>
52#endif
53
54#ifdef DEBUG
55#include <assert.h>
56#include "eina_log.h"
57
58static int _eina_chained_mp_log_dom = -1;
59
60#ifdef INF
61#undef INF
62#endif
63#define INF(...) EINA_LOG_DOM_INFO(_eina_chained_mp_log_dom, __VA_ARGS__)
64#endif
65
66typedef struct _Chained_Mempool Chained_Mempool;
67struct _Chained_Mempool
68{
69 Eina_Inlist *first;
70 Eina_Rbtree *root;
71 const char *name;
72 int item_alloc;
73 int pool_size;
74 int alloc_size;
75 int group_size;
76 int usage;
77#ifdef EFL_DEBUG_THREADS
78 pthread_t self;
79#endif
80 Eina_Lock mutex;
81};
82
83typedef struct _Chained_Pool Chained_Pool;
84struct _Chained_Pool
85{
86 EINA_INLIST;
87 EINA_RBTREE;
88 Eina_Trash *base;
89 int usage;
90
91 unsigned char *last;
92 unsigned char *limit;
93};
94
95static inline Eina_Rbtree_Direction
96_eina_chained_mp_pool_cmp(const Eina_Rbtree *left, const Eina_Rbtree *right, __UNUSED__ void *data)
97{
98 if (left < right) return EINA_RBTREE_LEFT;
99 return EINA_RBTREE_RIGHT;
100}
101
102static inline int
103_eina_chained_mp_pool_key_cmp(const Eina_Rbtree *node, const void *key,
104 __UNUSED__ int length, __UNUSED__ void *data)
105{
106 const Chained_Pool *r = EINA_RBTREE_CONTAINER_GET(node, const Chained_Pool);
107
108 if (key > (void *) r->limit) return -1;
109 if (key < (void *) r) return 1;
110 return 0;
111}
112
113static inline Chained_Pool *
114_eina_chained_mp_pool_new(Chained_Mempool *pool)
115{
116 Chained_Pool *p;
117 unsigned char *ptr;
118 unsigned int alignof;
119
120 eina_error_set(0);
121 p = malloc(pool->alloc_size);
122 if (!p)
123 {
124 eina_error_set(EINA_ERROR_OUT_OF_MEMORY);
125 return NULL;
126 }
127
128 alignof = eina_mempool_alignof(sizeof(Chained_Pool));
129 ptr = (unsigned char *)p + alignof;
130 p->usage = 0;
131 p->base = NULL;
132
133 p->last = ptr;
134 p->limit = ptr + pool->item_alloc * pool->pool_size;
135
136#ifndef NVALGRIND
137 VALGRIND_MAKE_MEM_NOACCESS(ptr, pool->alloc_size - alignof);
138#endif
139
140 return p;
141}
142
143static inline void
144_eina_chained_mp_pool_free(Chained_Pool *p)
145{
146 free(p);
147}
148
149static int
150_eina_chained_mempool_usage_cmp(const Eina_Inlist *l1, const Eina_Inlist *l2)
151{
152 const Chained_Pool *p1;
153 const Chained_Pool *p2;
154
155 p1 = EINA_INLIST_CONTAINER_GET(l1, const Chained_Pool);
156 p2 = EINA_INLIST_CONTAINER_GET(l2, const Chained_Pool);
157
158 return p2->usage - p1->usage;
159}
160
161static void *
162_eina_chained_mempool_alloc_in(Chained_Mempool *pool, Chained_Pool *p)
163{
164 void *mem;
165
166 if (p->last)
167 {
168 mem = p->last;
169 p->last += pool->item_alloc;
170 if (p->last >= p->limit)
171 p->last = NULL;
172 }
173 else
174 {
175#ifndef NVALGRIND
176 VALGRIND_MAKE_MEM_DEFINED(p->base, pool->item_alloc);
177#endif
178 // Request a free pointer
179 mem = eina_trash_pop(&p->base);
180 }
181
182 // move to end - it just filled up
183 if (!p->base && !p->last)
184 pool->first = eina_inlist_demote(pool->first, EINA_INLIST_GET(p));
185
186 p->usage++;
187 pool->usage++;
188
189#ifndef NVALGRIND
190 VALGRIND_MEMPOOL_ALLOC(pool, mem, pool->item_alloc);
191#endif
192
193 return mem;
194}
195
196static Eina_Bool
197_eina_chained_mempool_free_in(Chained_Mempool *pool, Chained_Pool *p, void *ptr)
198{
199 void *pmem;
200
201 // pool mem base
202 pmem = (void *)(((unsigned char *)p) + sizeof(Chained_Pool));
203
204 // is it in pool mem?
205 if (ptr < pmem)
206 {
207#ifdef DEBUG
208 INF("%p is inside the private part of %p pool from %p Chained_Mempool (could be the sign of a buffer underrun).", ptr, p, pool);
209#endif
210 return EINA_FALSE;
211 }
212
213 // freed node points to prev free node
214 eina_trash_push(&p->base, ptr);
215 // next free node is now the one we freed
216 p->usage--;
217 pool->usage--;
218 if (p->usage == 0)
219 {
220 // free bucket
221 pool->first = eina_inlist_remove(pool->first, EINA_INLIST_GET(p));
222 pool->root = eina_rbtree_inline_remove(pool->root, EINA_RBTREE_GET(p),
223 _eina_chained_mp_pool_cmp, NULL);
224 _eina_chained_mp_pool_free(p);
225
226 return EINA_TRUE;
227 }
228 else
229 {
230 // move to front
231 pool->first = eina_inlist_promote(pool->first, EINA_INLIST_GET(p));
232 }
233
234 return EINA_FALSE;
235}
236
237static void *
238eina_chained_mempool_malloc(void *data, __UNUSED__ unsigned int size)
239{
240 Chained_Mempool *pool = data;
241 Chained_Pool *p = NULL;
242 void *mem;
243
244 if (!eina_lock_take(&pool->mutex))
245 {
246#ifdef EFL_DEBUG_THREADS
247 assert(pthread_equal(pool->self, pthread_self()));
248#endif
249 }
250
251 // Either we have some free space in the first one, or there is no free space.
252 if (pool->first) p = EINA_INLIST_CONTAINER_GET(pool->first, Chained_Pool);
253
254 // base is not NULL - has a free slot
255 if (p && !p->base && !p->last)
256 p = NULL;
257
258#ifdef DEBUG
259 if (p == NULL)
260 EINA_INLIST_FOREACH(pool->first, p)
261 assert(!p->base && !p->last);
262#endif
263
264 // we have reached the end of the list - no free pools
265 if (!p)
266 {
267 p = _eina_chained_mp_pool_new(pool);
268 if (!p)
269 {
270 eina_lock_release(&pool->mutex);
271 return NULL;
272 }
273
274 pool->first = eina_inlist_prepend(pool->first, EINA_INLIST_GET(p));
275 pool->root = eina_rbtree_inline_insert(pool->root, EINA_RBTREE_GET(p),
276 _eina_chained_mp_pool_cmp, NULL);
277 }
278
279 mem = _eina_chained_mempool_alloc_in(pool, p);
280
281 eina_lock_release(&pool->mutex);
282
283 return mem;
284}
285
286static void
287eina_chained_mempool_free(void *data, void *ptr)
288{
289 Chained_Mempool *pool = data;
290 Eina_Rbtree *r;
291 Chained_Pool *p;
292
293 // look 4 pool
294 if (!eina_lock_take(&pool->mutex))
295 {
296#ifdef EFL_DEBUG_THREADS
297 assert(pthread_equal(pool->self, pthread_self()));
298#endif
299 }
300
301 // searching for the right mempool
302 r = eina_rbtree_inline_lookup(pool->root, ptr, 0, _eina_chained_mp_pool_key_cmp, NULL);
303
304 // related mempool not found
305 if (!r)
306 {
307#ifdef DEBUG
308 INF("%p is not the property of %p Chained_Mempool", ptr, pool);
309#endif
310 goto on_error;
311 }
312
313 p = EINA_RBTREE_CONTAINER_GET(r, Chained_Pool);
314
315 _eina_chained_mempool_free_in(pool, p, ptr);
316
317 on_error:
318#ifndef NVALGRIND
319 if (ptr)
320 {
321 VALGRIND_MEMPOOL_FREE(pool, ptr);
322 }
323#endif
324
325 eina_lock_release(&pool->mutex);
326 return;
327}
328
329static void
330eina_chained_mempool_repack(void *data,
331 Eina_Mempool_Repack_Cb cb,
332 void *cb_data)
333{
334 Chained_Mempool *pool = data;
335 Chained_Pool *start;
336 Chained_Pool *tail;
337
338 /* FIXME: Improvement - per Chained_Pool lock */
339 if (!eina_lock_take(&pool->mutex))
340 {
341#ifdef EFL_DEBUG_THREADS
342 assert(pthread_equal(pool->self, pthread_self()));
343#endif
344 }
345
346 pool->first = eina_inlist_sort(pool->first,
347 (Eina_Compare_Cb) _eina_chained_mempool_usage_cmp);
348
349 /*
350 idea : remove the almost empty pool at the beginning of the list by
351 moving data in the last pool with empty slot
352 */
353 tail = EINA_INLIST_CONTAINER_GET(pool->first->last, Chained_Pool);
354 while (tail && tail->usage == pool->pool_size)
355 tail = EINA_INLIST_CONTAINER_GET((EINA_INLIST_GET(tail)->prev), Chained_Pool);
356
357 while (tail)
358 {
359 unsigned char *src;
360 unsigned char *dst;
361
362 start = EINA_INLIST_CONTAINER_GET(pool->first, Chained_Pool);
363
364 if (start == tail || start->usage == pool->pool_size)
365 break;
366
367 for (src = start->limit - pool->group_size;
368 src != start->limit;
369 src += pool->item_alloc)
370 {
371 Eina_Bool is_free = EINA_FALSE;
372 Eina_Bool is_dead;
373
374 /* Do we have something inside that piece of memory */
375 if (start->last != NULL && src >= start->last)
376 {
377 is_free = EINA_TRUE;
378 }
379 else
380 {
381 Eina_Trash *over = start->base;
382
383 while (over != NULL && (unsigned char*) over != src)
384 over = over->next;
385
386 if (over == NULL)
387 is_free = EINA_TRUE;
388 }
389
390 if (is_free) continue ;
391
392 /* get a new memory pointer from the latest most occuped pool */
393 dst = _eina_chained_mempool_alloc_in(pool, tail);
394 /* move data from one to another */
395 memcpy(dst, src, pool->item_alloc);
396 /* notify caller */
397 cb(dst, src, cb_data);
398 /* destroy old pointer */
399 is_dead = _eina_chained_mempool_free_in(pool, start, src);
400
401 /* search last tail with empty slot */
402 while (tail && tail->usage == pool->pool_size)
403 tail = EINA_INLIST_CONTAINER_GET((EINA_INLIST_GET(tail)->prev),
404 Chained_Pool);
405 /* no more free space */
406 if (!tail || tail == start) break;
407 if (is_dead) break;
408 }
409 }
410
411 /* FIXME: improvement - reorder pool so that the most used one get in front */
412 eina_lock_release(&pool->mutex);
413}
414
415static void *
416eina_chained_mempool_realloc(__UNUSED__ void *data,
417 __UNUSED__ void *element,
418 __UNUSED__ unsigned int size)
419{
420 return NULL;
421}
422
423static void *
424eina_chained_mempool_init(const char *context,
425 __UNUSED__ const char *option,
426 va_list args)
427{
428 Chained_Mempool *mp;
429 int item_size;
430 size_t length;
431
432 length = context ? strlen(context) + 1 : 0;
433
434 mp = calloc(1, sizeof(Chained_Mempool) + length);
435 if (!mp)
436 return NULL;
437
438 item_size = va_arg(args, int);
439 mp->pool_size = va_arg(args, int);
440
441 if (length)
442 {
443 mp->name = (const char *)(mp + 1);
444 memcpy((char *)mp->name, context, length);
445 }
446
447 mp->item_alloc = eina_mempool_alignof(item_size);
448 mp->group_size = mp->item_alloc * mp->pool_size;
449 mp->alloc_size = mp->group_size + eina_mempool_alignof(sizeof(Chained_Pool));
450
451#ifndef NVALGRIND
452 VALGRIND_CREATE_MEMPOOL(mp, 0, 1);
453#endif
454
455#ifdef EFL_DEBUG_THREADS
456 mp->self = pthread_self();
457#endif
458
459 eina_lock_new(&mp->mutex);
460
461 return mp;
462}
463
464static void
465eina_chained_mempool_shutdown(void *data)
466{
467 Chained_Mempool *mp;
468
469 mp = (Chained_Mempool *)data;
470
471 while (mp->first)
472 {
473 Chained_Pool *p = (Chained_Pool *)mp->first;
474
475#ifdef DEBUG
476 if (p->usage > 0)
477 INF("Bad news we are destroying not an empty mempool [%s]\n",
478 mp->name);
479
480#endif
481
482 mp->first = eina_inlist_remove(mp->first, mp->first);
483 mp->root = eina_rbtree_inline_remove(mp->root, EINA_RBTREE_GET(p),
484 _eina_chained_mp_pool_cmp, NULL);
485 _eina_chained_mp_pool_free(p);
486 }
487
488#ifdef DEBUG
489 if (mp->root)
490 INF("Bad news, list of pool and rbtree are out of sync for %p !", mp);
491#endif
492
493#ifndef NVALGRIND
494 VALGRIND_DESTROY_MEMPOOL(mp);
495#endif
496
497 eina_lock_free(&mp->mutex);
498
499#ifdef EFL_DEBUG_THREADS
500 assert(pthread_equal(mp->self, pthread_self()));
501#endif
502
503 free(mp);
504}
505
506static Eina_Mempool_Backend _eina_chained_mp_backend = {
507 "chained_mempool",
508 &eina_chained_mempool_init,
509 &eina_chained_mempool_free,
510 &eina_chained_mempool_malloc,
511 &eina_chained_mempool_realloc,
512 NULL,
513 NULL,
514 &eina_chained_mempool_shutdown,
515 &eina_chained_mempool_repack
516};
517
518Eina_Bool chained_init(void)
519{
520#ifdef DEBUG
521 _eina_chained_mp_log_dom = eina_log_domain_register("eina_mempool",
522 EINA_LOG_COLOR_DEFAULT);
523 if (_eina_chained_mp_log_dom < 0)
524 {
525 EINA_LOG_ERR("Could not register log domain: eina_mempool");
526 return EINA_FALSE;
527 }
528
529#endif
530 return eina_mempool_register(&_eina_chained_mp_backend);
531}
532
533void chained_shutdown(void)
534{
535 eina_mempool_unregister(&_eina_chained_mp_backend);
536#ifdef DEBUG
537 eina_log_domain_unregister(_eina_chained_mp_log_dom);
538 _eina_chained_mp_log_dom = -1;
539#endif
540}
541
542#ifndef EINA_STATIC_BUILD_CHAINED_POOL
543
544EINA_MODULE_INIT(chained_init);
545EINA_MODULE_SHUTDOWN(chained_shutdown);
546
547#endif /* ! EINA_STATIC_BUILD_CHAINED_POOL */
generated by cgit v1.1 at 2024-08-28 01:16:58 +0000