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7f22efe1 | 1 | /* Functions to support a pool of allocatable objects |
8d9254fc | 2 | Copyright (C) 1997-2020 Free Software Foundation, Inc. |
7f22efe1 | 3 | Contributed by Daniel Berlin <dan@cgsoftware.com> |
76abd4c6 | 4 | |
7f22efe1 DB |
5 | This file is part of GCC. |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9dcd6f09 | 9 | the Free Software Foundation; either version 3, or (at your option) |
7f22efe1 DB |
10 | any later version. |
11 | ||
12 | GCC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
7f22efe1 DB |
20 | #ifndef ALLOC_POOL_H |
21 | #define ALLOC_POOL_H | |
22 | ||
fcb87c50 | 23 | #include "memory-block.h" |
9df01367 | 24 | #include "options.h" // for flag_checking |
7d50111b | 25 | |
1e0f41c9 | 26 | extern void dump_alloc_pool_statistics (void); |
7d50111b | 27 | |
bd545bcf ML |
28 | /* Flag indicates whether memory statistics are gathered any longer. */ |
29 | extern bool after_memory_report; | |
30 | ||
7d50111b ML |
31 | typedef unsigned long ALLOC_POOL_ID_TYPE; |
32 | ||
fb0b2914 ML |
33 | /* Last used ID. */ |
34 | extern ALLOC_POOL_ID_TYPE last_id; | |
35 | ||
ac059261 | 36 | /* Pool allocator memory usage. */ |
6c1dae73 | 37 | class pool_usage: public mem_usage |
ac059261 | 38 | { |
6c1dae73 | 39 | public: |
ac059261 ML |
40 | /* Default contructor. */ |
41 | pool_usage (): m_element_size (0), m_pool_name ("") {} | |
42 | /* Constructor. */ | |
43 | pool_usage (size_t allocated, size_t times, size_t peak, | |
44 | size_t instances, size_t element_size, | |
45 | const char *pool_name) | |
46 | : mem_usage (allocated, times, peak, instances), | |
47 | m_element_size (element_size), | |
48 | m_pool_name (pool_name) {} | |
49 | ||
50 | /* Sum the usage with SECOND usage. */ | |
80a4fe78 ML |
51 | pool_usage |
52 | operator+ (const pool_usage &second) | |
ac059261 ML |
53 | { |
54 | return pool_usage (m_allocated + second.m_allocated, | |
55 | m_times + second.m_times, | |
56 | m_peak + second.m_peak, | |
57 | m_instances + second.m_instances, | |
58 | m_element_size, m_pool_name); | |
59 | } | |
60 | ||
61 | /* Dump usage coupled to LOC location, where TOTAL is sum of all rows. */ | |
80a4fe78 | 62 | inline void |
d73d45f1 | 63 | dump (mem_location *loc, const mem_usage &total) const |
ac059261 ML |
64 | { |
65 | char *location_string = loc->to_string (); | |
66 | ||
a0b48080 MM |
67 | fprintf (stderr, "%-32s%-48s " PRsa(5) PRsa(9) ":%5.1f%%" |
68 | PRsa(9) PRsa(9) ":%5.1f%%%12" PRIu64 "\n", | |
40ce7fa6 ML |
69 | m_pool_name, location_string, |
70 | SIZE_AMOUNT (m_instances), | |
71 | SIZE_AMOUNT (m_allocated), | |
72 | get_percent (m_allocated, total.m_allocated), | |
73 | SIZE_AMOUNT (m_peak), | |
74 | SIZE_AMOUNT (m_times), | |
ac059261 | 75 | get_percent (m_times, total.m_times), |
a0b48080 | 76 | (uint64_t)m_element_size); |
ac059261 ML |
77 | |
78 | free (location_string); | |
79 | } | |
80 | ||
81 | /* Dump header with NAME. */ | |
80a4fe78 ML |
82 | static inline void |
83 | dump_header (const char *name) | |
ac059261 ML |
84 | { |
85 | fprintf (stderr, "%-32s%-48s %6s%11s%16s%17s%12s\n", "Pool name", name, | |
86 | "Pools", "Leak", "Peak", "Times", "Elt size"); | |
ac059261 ML |
87 | } |
88 | ||
89 | /* Dump footer. */ | |
80a4fe78 ML |
90 | inline void |
91 | dump_footer () | |
ac059261 | 92 | { |
a0b48080 | 93 | fprintf (stderr, "%s" PRsa(82) PRsa(10) "\n", "Total", |
40ce7fa6 | 94 | SIZE_AMOUNT (m_instances), SIZE_AMOUNT (m_allocated)); |
ac059261 ML |
95 | } |
96 | ||
97 | /* Element size. */ | |
98 | size_t m_element_size; | |
99 | /* Pool name. */ | |
100 | const char *m_pool_name; | |
101 | }; | |
102 | ||
103 | extern mem_alloc_description<pool_usage> pool_allocator_usage; | |
104 | ||
fcb87c50 MM |
105 | #if 0 |
106 | /* If a pool with custom block size is needed, one might use the following | |
107 | template. An instance of this template can be used as a parameter for | |
108 | instantiating base_pool_allocator template: | |
109 | ||
110 | typedef custom_block_allocator <128*1024> huge_block_allocator; | |
111 | ... | |
112 | static base_pool_allocator <huge_block_allocator> | |
113 | value_pool ("value", 16384); | |
114 | ||
115 | Right now it's not used anywhere in the code, and is given here as an | |
116 | example). */ | |
117 | ||
118 | template <size_t BlockSize> | |
119 | class custom_block_allocator | |
120 | { | |
121 | public: | |
122 | static const size_t block_size = BlockSize; | |
123 | ||
124 | static inline void * | |
125 | allocate () ATTRIBUTE_MALLOC | |
126 | { | |
127 | return XNEWVEC (char, BlockSize); | |
128 | } | |
129 | ||
130 | static inline void | |
131 | release (void *block) | |
132 | { | |
133 | XDELETEVEC (block); | |
134 | } | |
135 | }; | |
136 | #endif | |
137 | ||
fb0b2914 | 138 | /* Generic pool allocator. */ |
fcb87c50 MM |
139 | |
140 | template <typename TBlockAllocator> | |
141 | class base_pool_allocator | |
7d50111b ML |
142 | { |
143 | public: | |
fcb87c50 MM |
144 | /* Default constructor for pool allocator called NAME. */ |
145 | base_pool_allocator (const char *name, size_t size CXX_MEM_STAT_INFO); | |
146 | ~base_pool_allocator (); | |
7d50111b | 147 | void release (); |
7d50111b | 148 | void release_if_empty (); |
fb0b2914 ML |
149 | void *allocate () ATTRIBUTE_MALLOC; |
150 | void remove (void *object); | |
fcb87c50 | 151 | size_t num_elts_current (); |
7d50111b ML |
152 | |
153 | private: | |
154 | struct allocation_pool_list | |
155 | { | |
156 | allocation_pool_list *next; | |
157 | }; | |
158 | ||
159 | /* Initialize a pool allocator. */ | |
160 | void initialize (); | |
161 | ||
7d50111b ML |
162 | struct allocation_object |
163 | { | |
d286e1e3 | 164 | #if CHECKING_P |
7d50111b ML |
165 | /* The ID of alloc pool which the object was allocated from. */ |
166 | ALLOC_POOL_ID_TYPE id; | |
d286e1e3 | 167 | #endif |
7d50111b ML |
168 | |
169 | union | |
170 | { | |
171 | /* The data of the object. */ | |
172 | char data[1]; | |
173 | ||
174 | /* Because we want any type of data to be well aligned after the ID, | |
175 | the following elements are here. They are never accessed so | |
176 | the allocated object may be even smaller than this structure. | |
177 | We do not care about alignment for floating-point types. */ | |
178 | char *align_p; | |
179 | int64_t align_i; | |
180 | } u; | |
181 | ||
d286e1e3 | 182 | #if CHECKING_P |
fb0b2914 | 183 | static inline allocation_object* |
80a4fe78 | 184 | get_instance (void *data_ptr) |
7d50111b | 185 | { |
fb0b2914 ML |
186 | return (allocation_object *)(((char *)(data_ptr)) |
187 | - offsetof (allocation_object, | |
7d50111b ML |
188 | u.data)); |
189 | } | |
d286e1e3 | 190 | #endif |
7d50111b | 191 | |
fb0b2914 | 192 | static inline void* |
80a4fe78 | 193 | get_data (void *instance_ptr) |
7d50111b | 194 | { |
fb0b2914 | 195 | return (void*)(((allocation_object *) instance_ptr)->u.data); |
7d50111b ML |
196 | } |
197 | }; | |
198 | ||
199 | /* Align X to 8. */ | |
fcb87c50 | 200 | static inline size_t |
80a4fe78 | 201 | align_eight (size_t x) |
7d50111b ML |
202 | { |
203 | return (((x+7) >> 3) << 3); | |
204 | } | |
205 | ||
206 | const char *m_name; | |
207 | ALLOC_POOL_ID_TYPE m_id; | |
208 | size_t m_elts_per_block; | |
209 | ||
210 | /* These are the elements that have been allocated at least once | |
211 | and freed. */ | |
212 | allocation_pool_list *m_returned_free_list; | |
213 | ||
214 | /* These are the elements that have not yet been allocated out of | |
215 | the last block obtained from XNEWVEC. */ | |
216 | char* m_virgin_free_list; | |
217 | ||
218 | /* The number of elements in the virgin_free_list that can be | |
219 | allocated before needing another block. */ | |
220 | size_t m_virgin_elts_remaining; | |
221 | /* The number of elements that are allocated. */ | |
222 | size_t m_elts_allocated; | |
223 | /* The number of elements that are released. */ | |
224 | size_t m_elts_free; | |
225 | /* The number of allocated blocks. */ | |
226 | size_t m_blocks_allocated; | |
227 | /* List of blocks that are used to allocate new objects. */ | |
228 | allocation_pool_list *m_block_list; | |
7d50111b ML |
229 | /* Size of a pool elements in bytes. */ |
230 | size_t m_elt_size; | |
fb0b2914 ML |
231 | /* Size in bytes that should be allocated for each element. */ |
232 | size_t m_size; | |
7d50111b ML |
233 | /* Flag if a pool allocator is initialized. */ |
234 | bool m_initialized; | |
ac059261 ML |
235 | /* Memory allocation location. */ |
236 | mem_location m_location; | |
7d50111b ML |
237 | }; |
238 | ||
fcb87c50 | 239 | template <typename TBlockAllocator> |
7d50111b | 240 | inline |
fcb87c50 MM |
241 | base_pool_allocator <TBlockAllocator>::base_pool_allocator ( |
242 | const char *name, size_t size MEM_STAT_DECL): | |
243 | m_name (name), m_id (0), m_elts_per_block (0), m_returned_free_list (NULL), | |
7d50111b | 244 | m_virgin_free_list (NULL), m_virgin_elts_remaining (0), m_elts_allocated (0), |
5e9fab92 MP |
245 | m_elts_free (0), m_blocks_allocated (0), m_block_list (NULL), m_elt_size (0), |
246 | m_size (size), m_initialized (false), | |
247 | m_location (ALLOC_POOL_ORIGIN, false PASS_MEM_STAT) {} | |
7d50111b ML |
248 | |
249 | /* Initialize a pool allocator. */ | |
250 | ||
fcb87c50 | 251 | template <typename TBlockAllocator> |
fb0b2914 | 252 | inline void |
fcb87c50 | 253 | base_pool_allocator <TBlockAllocator>::initialize () |
7d50111b ML |
254 | { |
255 | gcc_checking_assert (!m_initialized); | |
256 | m_initialized = true; | |
257 | ||
fb0b2914 | 258 | size_t size = m_size; |
7d50111b ML |
259 | |
260 | gcc_checking_assert (m_name); | |
29f6f2d2 | 261 | gcc_checking_assert (m_size); |
7d50111b ML |
262 | |
263 | /* Make size large enough to store the list header. */ | |
264 | if (size < sizeof (allocation_pool_list*)) | |
265 | size = sizeof (allocation_pool_list*); | |
266 | ||
fcb87c50 | 267 | /* Now align the size to a multiple of 8. */ |
7d50111b ML |
268 | size = align_eight (size); |
269 | ||
270 | /* Add the aligned size of ID. */ | |
fb0b2914 | 271 | size += offsetof (allocation_object, u.data); |
7d50111b | 272 | |
7d50111b ML |
273 | m_elt_size = size; |
274 | ||
275 | if (GATHER_STATISTICS) | |
276 | { | |
ac059261 ML |
277 | pool_usage *u = pool_allocator_usage.register_descriptor |
278 | (this, new mem_location (m_location)); | |
279 | ||
280 | u->m_element_size = m_elt_size; | |
281 | u->m_pool_name = m_name; | |
7d50111b ML |
282 | } |
283 | ||
284 | /* List header size should be a multiple of 8. */ | |
fcb87c50 | 285 | size_t header_size = align_eight (sizeof (allocation_pool_list)); |
7d50111b | 286 | |
fcb87c50 MM |
287 | m_elts_per_block = (TBlockAllocator::block_size - header_size) / size; |
288 | gcc_checking_assert (m_elts_per_block != 0); | |
7d50111b | 289 | |
7d50111b ML |
290 | /* Increase the last used ID and use it for this pool. |
291 | ID == 0 is used for free elements of pool so skip it. */ | |
292 | last_id++; | |
293 | if (last_id == 0) | |
294 | last_id++; | |
295 | ||
296 | m_id = last_id; | |
7d50111b ML |
297 | } |
298 | ||
299 | /* Free all memory allocated for the given memory pool. */ | |
fcb87c50 | 300 | template <typename TBlockAllocator> |
7d50111b | 301 | inline void |
fcb87c50 | 302 | base_pool_allocator <TBlockAllocator>::release () |
7d50111b ML |
303 | { |
304 | if (!m_initialized) | |
305 | return; | |
306 | ||
307 | allocation_pool_list *block, *next_block; | |
308 | ||
309 | /* Free each block allocated to the pool. */ | |
310 | for (block = m_block_list; block != NULL; block = next_block) | |
311 | { | |
312 | next_block = block->next; | |
fcb87c50 | 313 | TBlockAllocator::release (block); |
7d50111b ML |
314 | } |
315 | ||
bd545bcf | 316 | if (GATHER_STATISTICS && !after_memory_report) |
7d50111b | 317 | { |
ac059261 ML |
318 | pool_allocator_usage.release_instance_overhead |
319 | (this, (m_elts_allocated - m_elts_free) * m_elt_size); | |
7d50111b ML |
320 | } |
321 | ||
322 | m_returned_free_list = NULL; | |
323 | m_virgin_free_list = NULL; | |
324 | m_virgin_elts_remaining = 0; | |
325 | m_elts_allocated = 0; | |
326 | m_elts_free = 0; | |
327 | m_blocks_allocated = 0; | |
328 | m_block_list = NULL; | |
329 | } | |
330 | ||
fcb87c50 MM |
331 | template <typename TBlockAllocator> |
332 | inline void | |
333 | base_pool_allocator <TBlockAllocator>::release_if_empty () | |
7d50111b ML |
334 | { |
335 | if (m_elts_free == m_elts_allocated) | |
336 | release (); | |
337 | } | |
338 | ||
fcb87c50 MM |
339 | template <typename TBlockAllocator> |
340 | inline base_pool_allocator <TBlockAllocator>::~base_pool_allocator () | |
7d50111b ML |
341 | { |
342 | release (); | |
343 | } | |
344 | ||
345 | /* Allocates one element from the pool specified. */ | |
fcb87c50 | 346 | template <typename TBlockAllocator> |
fb0b2914 | 347 | inline void* |
fcb87c50 | 348 | base_pool_allocator <TBlockAllocator>::allocate () |
7d50111b ML |
349 | { |
350 | if (!m_initialized) | |
351 | initialize (); | |
352 | ||
353 | allocation_pool_list *header; | |
354 | #ifdef ENABLE_VALGRIND_ANNOTATIONS | |
355 | int size; | |
356 | #endif | |
357 | ||
358 | if (GATHER_STATISTICS) | |
359 | { | |
ac059261 | 360 | pool_allocator_usage.register_instance_overhead (m_elt_size, this); |
7d50111b ML |
361 | } |
362 | ||
363 | #ifdef ENABLE_VALGRIND_ANNOTATIONS | |
fb0b2914 | 364 | size = m_elt_size - offsetof (allocation_object, u.data); |
7d50111b ML |
365 | #endif |
366 | ||
367 | /* If there are no more free elements, make some more!. */ | |
368 | if (!m_returned_free_list) | |
369 | { | |
370 | char *block; | |
371 | if (!m_virgin_elts_remaining) | |
372 | { | |
373 | allocation_pool_list *block_header; | |
374 | ||
375 | /* Make the block. */ | |
fcb87c50 | 376 | block = reinterpret_cast<char *> (TBlockAllocator::allocate ()); |
5929c659 | 377 | block_header = new (block) allocation_pool_list; |
7d50111b ML |
378 | block += align_eight (sizeof (allocation_pool_list)); |
379 | ||
380 | /* Throw it on the block list. */ | |
381 | block_header->next = m_block_list; | |
382 | m_block_list = block_header; | |
383 | ||
384 | /* Make the block available for allocation. */ | |
385 | m_virgin_free_list = block; | |
386 | m_virgin_elts_remaining = m_elts_per_block; | |
387 | ||
388 | /* Also update the number of elements we have free/allocated, and | |
389 | increment the allocated block count. */ | |
390 | m_elts_allocated += m_elts_per_block; | |
391 | m_elts_free += m_elts_per_block; | |
392 | m_blocks_allocated += 1; | |
393 | } | |
394 | ||
395 | /* We now know that we can take the first elt off the virgin list and | |
396 | put it on the returned list. */ | |
397 | block = m_virgin_free_list; | |
fb0b2914 | 398 | header = (allocation_pool_list*) allocation_object::get_data (block); |
7d50111b | 399 | header->next = NULL; |
9df01367 | 400 | |
7d50111b | 401 | /* Mark the element to be free. */ |
d286e1e3 | 402 | #if CHECKING_P |
fb0b2914 | 403 | ((allocation_object*) block)->id = 0; |
d286e1e3 | 404 | #endif |
7d50111b ML |
405 | VALGRIND_DISCARD (VALGRIND_MAKE_MEM_NOACCESS (header,size)); |
406 | m_returned_free_list = header; | |
407 | m_virgin_free_list += m_elt_size; | |
408 | m_virgin_elts_remaining--; | |
409 | ||
410 | } | |
411 | ||
412 | /* Pull the first free element from the free list, and return it. */ | |
413 | header = m_returned_free_list; | |
414 | VALGRIND_DISCARD (VALGRIND_MAKE_MEM_DEFINED (header, sizeof (*header))); | |
415 | m_returned_free_list = header->next; | |
416 | m_elts_free--; | |
417 | ||
7d50111b | 418 | /* Set the ID for element. */ |
d286e1e3 | 419 | #if CHECKING_P |
fb0b2914 | 420 | allocation_object::get_instance (header)->id = m_id; |
d286e1e3 | 421 | #endif |
7d50111b ML |
422 | VALGRIND_DISCARD (VALGRIND_MAKE_MEM_UNDEFINED (header, size)); |
423 | ||
fb0b2914 | 424 | return (void *)(header); |
7d50111b ML |
425 | } |
426 | ||
427 | /* Puts PTR back on POOL's free list. */ | |
fcb87c50 | 428 | template <typename TBlockAllocator> |
fb0b2914 | 429 | inline void |
fcb87c50 | 430 | base_pool_allocator <TBlockAllocator>::remove (void *object) |
7d50111b | 431 | { |
5929c659 RB |
432 | int size = m_elt_size - offsetof (allocation_object, u.data); |
433 | ||
9df01367 MM |
434 | if (flag_checking) |
435 | { | |
436 | gcc_assert (m_initialized); | |
437 | gcc_assert (object | |
d286e1e3 RB |
438 | /* Check if we free more than we allocated. */ |
439 | && m_elts_free < m_elts_allocated); | |
440 | #if CHECKING_P | |
441 | /* Check whether the PTR was allocated from POOL. */ | |
442 | gcc_assert (m_id == allocation_object::get_instance (object)->id); | |
443 | #endif | |
7d50111b | 444 | |
9df01367 MM |
445 | memset (object, 0xaf, size); |
446 | } | |
7d50111b | 447 | |
d286e1e3 | 448 | #if CHECKING_P |
7d50111b | 449 | /* Mark the element to be free. */ |
fb0b2914 | 450 | allocation_object::get_instance (object)->id = 0; |
d286e1e3 | 451 | #endif |
7d50111b | 452 | |
5929c659 | 453 | allocation_pool_list *header = new (object) allocation_pool_list; |
7d50111b ML |
454 | header->next = m_returned_free_list; |
455 | m_returned_free_list = header; | |
456 | VALGRIND_DISCARD (VALGRIND_MAKE_MEM_NOACCESS (object, size)); | |
457 | m_elts_free++; | |
458 | ||
459 | if (GATHER_STATISTICS) | |
460 | { | |
ac059261 | 461 | pool_allocator_usage.release_instance_overhead (this, m_elt_size); |
7d50111b ML |
462 | } |
463 | } | |
464 | ||
fcb87c50 MM |
465 | /* Number of elements currently active (not returned to pool). Used for cheap |
466 | consistency checks. */ | |
467 | template <typename TBlockAllocator> | |
468 | inline size_t | |
469 | base_pool_allocator <TBlockAllocator>::num_elts_current () | |
470 | { | |
471 | return m_elts_allocated - m_elts_free; | |
472 | } | |
473 | ||
474 | /* Specialization of base_pool_allocator which should be used in most cases. | |
475 | Another specialization may be needed, if object size is greater than | |
476 | memory_block_pool::block_size (64 KB). */ | |
477 | typedef base_pool_allocator <memory_block_pool> pool_allocator; | |
478 | ||
fb0b2914 ML |
479 | /* Type based memory pool allocator. */ |
480 | template <typename T> | |
481 | class object_allocator | |
482 | { | |
483 | public: | |
fcb87c50 MM |
484 | /* Default constructor for pool allocator called NAME. */ |
485 | object_allocator (const char *name CXX_MEM_STAT_INFO): | |
486 | m_allocator (name, sizeof (T) PASS_MEM_STAT) {} | |
fb0b2914 ML |
487 | |
488 | inline void | |
489 | release () | |
490 | { | |
491 | m_allocator.release (); | |
492 | } | |
493 | ||
494 | inline void release_if_empty () | |
495 | { | |
496 | m_allocator.release_if_empty (); | |
497 | } | |
498 | ||
8bd37a2e ML |
499 | |
500 | /* Allocate memory for instance of type T and call a default constructor. */ | |
501 | ||
fb0b2914 ML |
502 | inline T * |
503 | allocate () ATTRIBUTE_MALLOC | |
504 | { | |
f1aa4bb3 | 505 | return ::new (m_allocator.allocate ()) T; |
fb0b2914 ML |
506 | } |
507 | ||
8bd37a2e ML |
508 | /* Allocate memory for instance of type T and return void * that |
509 | could be used in situations where a default constructor is not provided | |
510 | by the class T. */ | |
511 | ||
512 | inline void * | |
513 | allocate_raw () ATTRIBUTE_MALLOC | |
514 | { | |
515 | return m_allocator.allocate (); | |
516 | } | |
517 | ||
fb0b2914 ML |
518 | inline void |
519 | remove (T *object) | |
520 | { | |
521 | /* Call destructor. */ | |
522 | object->~T (); | |
523 | ||
524 | m_allocator.remove (object); | |
525 | } | |
526 | ||
fcb87c50 MM |
527 | inline size_t |
528 | num_elts_current () | |
529 | { | |
530 | return m_allocator.num_elts_current (); | |
531 | } | |
532 | ||
fb0b2914 ML |
533 | private: |
534 | pool_allocator m_allocator; | |
535 | }; | |
536 | ||
537 | /* Store information about each particular alloc_pool. Note that this | |
538 | will underestimate the amount the amount of storage used by a small amount: | |
539 | 1) The overhead in a pool is not accounted for. | |
540 | 2) The unallocated elements in a block are not accounted for. Note | |
541 | that this can at worst case be one element smaller that the block | |
542 | size for that pool. */ | |
543 | struct alloc_pool_descriptor | |
544 | { | |
545 | /* Number of pools allocated. */ | |
546 | unsigned long created; | |
547 | /* Gross allocated storage. */ | |
548 | unsigned long allocated; | |
549 | /* Amount of currently active storage. */ | |
550 | unsigned long current; | |
551 | /* Peak amount of storage used. */ | |
552 | unsigned long peak; | |
553 | /* Size of element in the pool. */ | |
554 | int elt_size; | |
555 | }; | |
556 | ||
557 | /* Helper for classes that do not provide default ctor. */ | |
558 | ||
559 | template <typename T> | |
560 | inline void * | |
561 | operator new (size_t, object_allocator<T> &a) | |
562 | { | |
8bd37a2e | 563 | return a.allocate_raw (); |
fb0b2914 ML |
564 | } |
565 | ||
566 | /* Hashtable mapping alloc_pool names to descriptors. */ | |
567 | extern hash_map<const char *, alloc_pool_descriptor> *alloc_pool_hash; | |
568 | ||
569 | ||
7f22efe1 | 570 | #endif |