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apr_buckets.h

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00001 /* Copyright 2000-2004 The Apache Software Foundation
00002  *
00003  * Licensed under the Apache License, Version 2.0 (the "License");
00004  * you may not use this file except in compliance with the License.
00005  * You may obtain a copy of the License at
00006  *
00007  *     http://www.apache.org/licenses/LICENSE-2.0
00008  *
00009  * Unless required by applicable law or agreed to in writing, software
00010  * distributed under the License is distributed on an "AS IS" BASIS,
00011  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00012  * See the License for the specific language governing permissions and
00013  * limitations under the License.
00014  */
00020 #ifndef APR_BUCKETS_H
00021 #define APR_BUCKETS_H
00022 
00023 #if defined(APR_BUCKET_DEBUG) && !defined(APR_RING_DEBUG)
00024 #define APR_RING_DEBUG
00025 #endif
00026 
00027 #include "apu.h"
00028 #include "apr_network_io.h"
00029 #include "apr_file_io.h"
00030 #include "apr_general.h"
00031 #include "apr_mmap.h"
00032 #include "apr_errno.h"
00033 #include "apr_ring.h"
00034 #include "apr.h"
00035 #if APR_HAVE_SYS_UIO_H
00036 #include <sys/uio.h>    /* for struct iovec */
00037 #endif
00038 #if APR_HAVE_STDARG_H
00039 #include <stdarg.h>
00040 #endif
00041 
00042 #ifdef __cplusplus
00043 extern "C" {
00044 #endif
00045 
00053 #define APR_BUCKET_BUFF_SIZE 8000
00054 
00056 typedef enum {
00057     APR_BLOCK_READ,   
00058     APR_NONBLOCK_READ 
00059 } apr_read_type_e;
00060 
00113 /*
00114  * Forward declaration of the main types.
00115  */
00116 
00118 typedef struct apr_bucket_brigade apr_bucket_brigade;
00120 typedef struct apr_bucket apr_bucket;
00122 typedef struct apr_bucket_alloc_t apr_bucket_alloc_t;
00123 
00125 typedef struct apr_bucket_type_t apr_bucket_type_t;
00126 
00130 struct apr_bucket_type_t {
00134     const char *name;
00139     int num_func;
00150     enum {
00152         APR_BUCKET_DATA = 0,
00154         APR_BUCKET_METADATA = 1
00155     } is_metadata;
00163     void (*destroy)(void *data);
00164 
00175     apr_status_t (*read)(apr_bucket *b, const char **str, apr_size_t *len, 
00176                          apr_read_type_e block);
00177     
00191     apr_status_t (*setaside)(apr_bucket *e, apr_pool_t *pool);
00192 
00202     apr_status_t (*split)(apr_bucket *e, apr_size_t point);
00203 
00210     apr_status_t (*copy)(apr_bucket *e, apr_bucket **c);
00211 
00212 };
00213 
00223 struct apr_bucket {
00225     APR_RING_ENTRY(apr_bucket) link;
00227     const apr_bucket_type_t *type;
00233     apr_size_t length;
00241     apr_off_t start;
00243     void *data; 
00251     void (*free)(void *e);
00253     apr_bucket_alloc_t *list;
00254 };
00255 
00257 struct apr_bucket_brigade {
00263     apr_pool_t *p;
00265     /*
00266      * The apr_bucket_list structure doesn't actually need a name tag
00267      * because it has no existence independent of struct apr_bucket_brigade;
00268      * the ring macros are designed so that you can leave the name tag
00269      * argument empty in this situation but apparently the Windows compiler
00270      * doesn't like that.
00271      */
00272     APR_RING_HEAD(apr_bucket_list, apr_bucket) list;
00274     apr_bucket_alloc_t *bucket_alloc;
00275 };
00276 
00277 
00281 typedef apr_status_t (*apr_brigade_flush)(apr_bucket_brigade *bb, void *ctx);
00282 
00283 /*
00284  * define APR_BUCKET_DEBUG if you want your brigades to be checked for
00285  * validity at every possible instant.  this will slow your code down
00286  * substantially but is a very useful debugging tool.
00287  */
00288 #ifdef APR_BUCKET_DEBUG
00289 
00290 #define APR_BRIGADE_CHECK_CONSISTENCY(b)                                \
00291         APR_RING_CHECK_CONSISTENCY(&(b)->list, apr_bucket, link)
00292 
00293 #define APR_BUCKET_CHECK_CONSISTENCY(e)                                 \
00294         APR_RING_CHECK_ELEM_CONSISTENCY((e), apr_bucket, link)
00295 
00296 #else
00303 #define APR_BRIGADE_CHECK_CONSISTENCY(b)
00310 #define APR_BUCKET_CHECK_CONSISTENCY(e)
00311 #endif
00312 
00313 
00330 #define APR_BRIGADE_SENTINEL(b) APR_RING_SENTINEL(&(b)->list, apr_bucket, link)
00331 
00337 #define APR_BRIGADE_EMPTY(b)    APR_RING_EMPTY(&(b)->list, apr_bucket, link)
00338 
00344 #define APR_BRIGADE_FIRST(b)    APR_RING_FIRST(&(b)->list)
00350 #define APR_BRIGADE_LAST(b)     APR_RING_LAST(&(b)->list)
00351 
00357 #define APR_BRIGADE_INSERT_HEAD(b, e) do {                              \
00358         apr_bucket *ap__b = (e);                                        \
00359         APR_RING_INSERT_HEAD(&(b)->list, ap__b, apr_bucket, link);      \
00360         APR_BRIGADE_CHECK_CONSISTENCY((b));                             \
00361     } while (0)
00362 
00368 #define APR_BRIGADE_INSERT_TAIL(b, e) do {                              \
00369         apr_bucket *ap__b = (e);                                        \
00370         APR_RING_INSERT_TAIL(&(b)->list, ap__b, apr_bucket, link);      \
00371         APR_BRIGADE_CHECK_CONSISTENCY((b));                             \
00372     } while (0)
00373 
00379 #define APR_BRIGADE_CONCAT(a, b) do {                                   \
00380         APR_RING_CONCAT(&(a)->list, &(b)->list, apr_bucket, link);      \
00381         APR_BRIGADE_CHECK_CONSISTENCY((a));                             \
00382     } while (0)
00383 
00389 #define APR_BRIGADE_PREPEND(a, b) do {                                  \
00390         APR_RING_PREPEND(&(a)->list, &(b)->list, apr_bucket, link);     \
00391         APR_BRIGADE_CHECK_CONSISTENCY((a));                             \
00392     } while (0)
00393 
00399 #define APR_BUCKET_INSERT_BEFORE(a, b) do {                             \
00400         apr_bucket *ap__a = (a), *ap__b = (b);                          \
00401         APR_RING_INSERT_BEFORE(ap__a, ap__b, link);                     \
00402         APR_BUCKET_CHECK_CONSISTENCY(ap__a);                            \
00403     } while (0)
00404 
00410 #define APR_BUCKET_INSERT_AFTER(a, b) do {                              \
00411         apr_bucket *ap__a = (a), *ap__b = (b);                          \
00412         APR_RING_INSERT_AFTER(ap__a, ap__b, link);                      \
00413         APR_BUCKET_CHECK_CONSISTENCY(ap__a);                            \
00414     } while (0)
00415 
00421 #define APR_BUCKET_NEXT(e)      APR_RING_NEXT((e), link)
00422 
00427 #define APR_BUCKET_PREV(e)      APR_RING_PREV((e), link)
00428 
00433 #define APR_BUCKET_REMOVE(e)    APR_RING_REMOVE((e), link)
00434 
00439 #define APR_BUCKET_INIT(e)      APR_RING_ELEM_INIT((e), link)
00440 
00447 #define APR_BUCKET_IS_METADATA(e)    ((e)->type->is_metadata)
00448 
00454 #define APR_BUCKET_IS_FLUSH(e)       ((e)->type == &apr_bucket_type_flush)
00455 
00460 #define APR_BUCKET_IS_EOS(e)         ((e)->type == &apr_bucket_type_eos)
00461 
00466 #define APR_BUCKET_IS_FILE(e)        ((e)->type == &apr_bucket_type_file)
00467 
00472 #define APR_BUCKET_IS_PIPE(e)        ((e)->type == &apr_bucket_type_pipe)
00473 
00478 #define APR_BUCKET_IS_SOCKET(e)      ((e)->type == &apr_bucket_type_socket)
00479 
00484 #define APR_BUCKET_IS_HEAP(e)        ((e)->type == &apr_bucket_type_heap)
00485 
00490 #define APR_BUCKET_IS_TRANSIENT(e)   ((e)->type == &apr_bucket_type_transient)
00491 
00496 #define APR_BUCKET_IS_IMMORTAL(e)    ((e)->type == &apr_bucket_type_immortal)
00497 #if APR_HAS_MMAP
00498 
00503 #define APR_BUCKET_IS_MMAP(e)        ((e)->type == &apr_bucket_type_mmap)
00504 #endif
00505 
00510 #define APR_BUCKET_IS_POOL(e)        ((e)->type == &apr_bucket_type_pool)
00511 
00512 /*
00513  * General-purpose reference counting for the various bucket types.
00514  *
00515  * Any bucket type that keeps track of the resources it uses (i.e.
00516  * most of them except for IMMORTAL, TRANSIENT, and EOS) needs to
00517  * attach a reference count to the resource so that it can be freed
00518  * when the last bucket that uses it goes away. Resource-sharing may
00519  * occur because of bucket splits or buckets that refer to globally
00520  * cached data. */
00521 
00523 typedef struct apr_bucket_refcount apr_bucket_refcount;
00530 struct apr_bucket_refcount {
00532     int          refcount;
00533 };
00534 
00535 /*  *****  Reference-counted bucket types  *****  */
00536 
00538 typedef struct apr_bucket_heap apr_bucket_heap;
00542 struct apr_bucket_heap {
00544     apr_bucket_refcount  refcount;
00548     char    *base;
00550     apr_size_t  alloc_len;
00552     void (*free_func)(void *data);
00553 };
00554 
00556 typedef struct apr_bucket_pool apr_bucket_pool;
00560 struct apr_bucket_pool {
00572     apr_bucket_heap  heap;
00578     const char *base;
00585     apr_pool_t *pool;
00589     apr_bucket_alloc_t *list;
00590 };
00591 
00592 #if APR_HAS_MMAP
00593 
00594 typedef struct apr_bucket_mmap apr_bucket_mmap;
00598 struct apr_bucket_mmap {
00600     apr_bucket_refcount  refcount;
00602     apr_mmap_t *mmap;
00603 };
00604 #endif
00605 
00607 typedef struct apr_bucket_file apr_bucket_file;
00611 struct apr_bucket_file {
00613     apr_bucket_refcount  refcount;
00615     apr_file_t *fd;
00618     apr_pool_t *readpool;
00619 #if APR_HAS_MMAP
00620 
00622     int can_mmap;
00623 #endif /* APR_HAS_MMAP */
00624 };
00625 
00627 typedef union apr_bucket_structs apr_bucket_structs;
00632 union apr_bucket_structs {
00633     apr_bucket      b;      
00634     apr_bucket_heap heap;   
00635     apr_bucket_pool pool;   
00636 #if APR_HAS_MMAP
00637     apr_bucket_mmap mmap;   
00638 #endif
00639     apr_bucket_file file;   
00640 };
00641 
00647 #define APR_BUCKET_ALLOC_SIZE  APR_ALIGN_DEFAULT(2*sizeof(apr_bucket_structs))
00648 
00649 /*  *****  Bucket Brigade Functions  *****  */
00657 APU_DECLARE(apr_bucket_brigade *) apr_brigade_create(apr_pool_t *p,
00658                                                      apr_bucket_alloc_t *list);
00659 
00665 APU_DECLARE(apr_status_t) apr_brigade_destroy(apr_bucket_brigade *b);
00666 
00678 APU_DECLARE(apr_status_t) apr_brigade_cleanup(void *data);
00679 
00689 APU_DECLARE(apr_bucket_brigade *) apr_brigade_split(apr_bucket_brigade *b,
00690                                                     apr_bucket *e);
00691 
00700 APU_DECLARE(apr_status_t) apr_brigade_partition(apr_bucket_brigade *b,
00701                                                 apr_off_t point,
00702                                                 apr_bucket **after_point);
00703 
00711 APU_DECLARE(apr_status_t) apr_brigade_length(apr_bucket_brigade *bb,
00712                                              int read_all,
00713                                              apr_off_t *length);
00714 
00722 APU_DECLARE(apr_status_t) apr_brigade_flatten(apr_bucket_brigade *bb,
00723                                               char *c,
00724                                               apr_size_t *len);
00725 
00733 APU_DECLARE(apr_status_t) apr_brigade_pflatten(apr_bucket_brigade *bb, 
00734                                                char **c,
00735                                                apr_size_t *len,
00736                                                apr_pool_t *pool);
00737 
00746 APU_DECLARE(apr_status_t) apr_brigade_split_line(apr_bucket_brigade *bbOut,
00747                                                  apr_bucket_brigade *bbIn,
00748                                                  apr_read_type_e block,
00749                                                  apr_off_t maxbytes);
00750 
00760 APU_DECLARE(apr_status_t) apr_brigade_to_iovec(apr_bucket_brigade *b, 
00761                                                struct iovec *vec, int *nvec);
00762 
00771 APU_DECLARE(apr_status_t) apr_brigade_vputstrs(apr_bucket_brigade *b,
00772                                                apr_brigade_flush flush,
00773                                                void *ctx,
00774                                                va_list va);
00775 
00785 APU_DECLARE(apr_status_t) apr_brigade_write(apr_bucket_brigade *b,
00786                                             apr_brigade_flush flush, void *ctx,
00787                                             const char *str, apr_size_t nbyte);
00788 
00798 APU_DECLARE(apr_status_t) apr_brigade_writev(apr_bucket_brigade *b,
00799                                              apr_brigade_flush flush,
00800                                              void *ctx,
00801                                              const struct iovec *vec,
00802                                              apr_size_t nvec);
00803 
00812 APU_DECLARE(apr_status_t) apr_brigade_puts(apr_bucket_brigade *bb,
00813                                            apr_brigade_flush flush, void *ctx,
00814                                            const char *str);
00815 
00824 APU_DECLARE(apr_status_t) apr_brigade_putc(apr_bucket_brigade *b,
00825                                            apr_brigade_flush flush, void *ctx,
00826                                            const char c);
00827 
00836 APU_DECLARE_NONSTD(apr_status_t) apr_brigade_putstrs(apr_bucket_brigade *b,
00837                                                      apr_brigade_flush flush,
00838                                                      void *ctx, ...);
00839 
00850 APU_DECLARE_NONSTD(apr_status_t) apr_brigade_printf(apr_bucket_brigade *b, 
00851                                                     apr_brigade_flush flush,
00852                                                     void *ctx,
00853                                                     const char *fmt, ...)
00854         __attribute__((format(printf,4,5)));
00855 
00866 APU_DECLARE(apr_status_t) apr_brigade_vprintf(apr_bucket_brigade *b, 
00867                                               apr_brigade_flush flush,
00868                                               void *ctx,
00869                                               const char *fmt, va_list va);
00870 
00883 APU_DECLARE(apr_bucket *) apr_brigade_insert_file(apr_bucket_brigade *bb,
00884                                                   apr_file_t *f,
00885                                                   apr_off_t start,
00886                                                   apr_off_t len,
00887                                                   apr_pool_t *p);
00888 
00889 
00890 
00891 /*  *****  Bucket freelist functions *****  */
00905 APU_DECLARE_NONSTD(apr_bucket_alloc_t *) apr_bucket_alloc_create(apr_pool_t *p);
00906 
00915 APU_DECLARE_NONSTD(apr_bucket_alloc_t *) apr_bucket_alloc_create_ex(apr_allocator_t *allocator);
00916 
00921 APU_DECLARE_NONSTD(void) apr_bucket_alloc_destroy(apr_bucket_alloc_t *list);
00922 
00928 APU_DECLARE_NONSTD(void *) apr_bucket_alloc(apr_size_t size, apr_bucket_alloc_t *list);
00929 
00934 APU_DECLARE_NONSTD(void) apr_bucket_free(void *block);
00935 
00936 
00937 /*  *****  Bucket Functions  *****  */
00944 #define apr_bucket_destroy(e) do {                                      \
00945         (e)->type->destroy((e)->data);                                  \
00946         (e)->free(e);                                                   \
00947     } while (0)
00948 
00960 #define apr_bucket_delete(e) do {                                       \
00961         APR_BUCKET_REMOVE(e);                                           \
00962         apr_bucket_destroy(e);                                          \
00963     } while (0)
00964 
00972 #define apr_bucket_read(e,str,len,block) (e)->type->read(e, str, len, block)
00973 
00980 #define apr_bucket_setaside(e,p) (e)->type->setaside(e,p)
00981 
00987 #define apr_bucket_split(e,point) (e)->type->split(e, point)
00988 
00994 #define apr_bucket_copy(e,c) (e)->type->copy(e, c)
00995 
00996 /* Bucket type handling */
00997 
01007 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_setaside_noop(apr_bucket *data,
01008                                                           apr_pool_t *pool);
01009 
01017 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_setaside_notimpl(apr_bucket *data,
01018                                                              apr_pool_t *pool);
01019 
01027 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_split_notimpl(apr_bucket *data,
01028                                                           apr_size_t point);
01029 
01037 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_copy_notimpl(apr_bucket *e,
01038                                                          apr_bucket **c);
01039 
01049 APU_DECLARE_NONSTD(void) apr_bucket_destroy_noop(void *data);
01050 
01057 /* There is no apr_bucket_read_notimpl, because it is a required function
01058  */
01059 
01060 
01061 /* All of the bucket types implemented by the core */
01066 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_flush;
01072 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_eos;
01076 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_file;
01081 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_heap;
01082 #if APR_HAS_MMAP
01086 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_mmap;
01087 #endif
01093 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_pool;
01097 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_pipe;
01103 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_immortal;
01109 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_transient;
01113 APU_DECLARE_DATA extern const apr_bucket_type_t apr_bucket_type_socket;
01114 
01115 
01116 /*  *****  Simple buckets  *****  */
01117 
01129 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_simple_split(apr_bucket *b,
01130                                                          apr_size_t point);
01131 
01142 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_simple_copy(apr_bucket *a,
01143                                                         apr_bucket **b);
01144 
01145 
01146 /*  *****  Shared, reference-counted buckets  *****  */
01147 
01162 APU_DECLARE(apr_bucket *) apr_bucket_shared_make(apr_bucket *b, void *data,
01163                                                  apr_off_t start, 
01164                                                  apr_size_t length);
01165 
01174 APU_DECLARE(int) apr_bucket_shared_destroy(void *data);
01175 
01187 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_shared_split(apr_bucket *b,
01188                                                          apr_size_t point);
01189 
01199 APU_DECLARE_NONSTD(apr_status_t) apr_bucket_shared_copy(apr_bucket *a,
01200                                                         apr_bucket **b);
01201 
01202 
01203 /*  *****  Functions to Create Buckets of varying types  *****  */
01204 /*
01205  * Each bucket type foo has two initialization functions:
01206  * apr_bucket_foo_make which sets up some already-allocated memory as a
01207  * bucket of type foo; and apr_bucket_foo_create which allocates memory
01208  * for the bucket, calls apr_bucket_make_foo, and initializes the
01209  * bucket's list pointers. The apr_bucket_foo_make functions are used
01210  * inside the bucket code to change the type of buckets in place;
01211  * other code should call apr_bucket_foo_create. All the initialization
01212  * functions change nothing if they fail.
01213  */
01214 
01221 APU_DECLARE(apr_bucket *) apr_bucket_eos_create(apr_bucket_alloc_t *list);
01222 
01230 APU_DECLARE(apr_bucket *) apr_bucket_eos_make(apr_bucket *b);
01231 
01239 APU_DECLARE(apr_bucket *) apr_bucket_flush_create(apr_bucket_alloc_t *list);
01240 
01248 APU_DECLARE(apr_bucket *) apr_bucket_flush_make(apr_bucket *b);
01249 
01257 APU_DECLARE(apr_bucket *) apr_bucket_immortal_create(const char *buf, 
01258                                                      apr_size_t nbyte,
01259                                                      apr_bucket_alloc_t *list);
01260 
01268 APU_DECLARE(apr_bucket *) apr_bucket_immortal_make(apr_bucket *b, 
01269                                                    const char *buf, 
01270                                                    apr_size_t nbyte);
01271 
01279 APU_DECLARE(apr_bucket *) apr_bucket_transient_create(const char *buf, 
01280                                                       apr_size_t nbyte,
01281                                                       apr_bucket_alloc_t *list);
01282 
01290 APU_DECLARE(apr_bucket *) apr_bucket_transient_make(apr_bucket *b, 
01291                                                     const char *buf,
01292                                                     apr_size_t nbyte);
01293 
01308 APU_DECLARE(apr_bucket *) apr_bucket_heap_create(const char *buf, 
01309                                                  apr_size_t nbyte,
01310                                                  void (*free_func)(void *data),
01311                                                  apr_bucket_alloc_t *list);
01321 APU_DECLARE(apr_bucket *) apr_bucket_heap_make(apr_bucket *b, const char *buf,
01322                                                apr_size_t nbyte,
01323                                                void (*free_func)(void *data));
01324 
01334 APU_DECLARE(apr_bucket *) apr_bucket_pool_create(const char *buf, 
01335                                                  apr_size_t length,
01336                                                  apr_pool_t *pool,
01337                                                  apr_bucket_alloc_t *list);
01338 
01347 APU_DECLARE(apr_bucket *) apr_bucket_pool_make(apr_bucket *b, const char *buf,
01348                                                apr_size_t length, 
01349                                                apr_pool_t *pool);
01350 
01351 #if APR_HAS_MMAP
01361 APU_DECLARE(apr_bucket *) apr_bucket_mmap_create(apr_mmap_t *mm, 
01362                                                  apr_off_t start,
01363                                                  apr_size_t length,
01364                                                  apr_bucket_alloc_t *list);
01365 
01375 APU_DECLARE(apr_bucket *) apr_bucket_mmap_make(apr_bucket *b, apr_mmap_t *mm,
01376                                                apr_off_t start, 
01377                                                apr_size_t length);
01378 #endif
01379 
01386 APU_DECLARE(apr_bucket *) apr_bucket_socket_create(apr_socket_t *thissock,
01387                                                    apr_bucket_alloc_t *list);
01394 APU_DECLARE(apr_bucket *) apr_bucket_socket_make(apr_bucket *b, 
01395                                                  apr_socket_t *thissock);
01396 
01403 APU_DECLARE(apr_bucket *) apr_bucket_pipe_create(apr_file_t *thispipe,
01404                                                  apr_bucket_alloc_t *list);
01405 
01412 APU_DECLARE(apr_bucket *) apr_bucket_pipe_make(apr_bucket *b, 
01413                                                apr_file_t *thispipe);
01414 
01425 APU_DECLARE(apr_bucket *) apr_bucket_file_create(apr_file_t *fd,
01426                                                  apr_off_t offset,
01427                                                  apr_size_t len, 
01428                                                  apr_pool_t *p,
01429                                                  apr_bucket_alloc_t *list);
01430 
01441 APU_DECLARE(apr_bucket *) apr_bucket_file_make(apr_bucket *b, apr_file_t *fd,
01442                                                apr_off_t offset,
01443                                                apr_size_t len, apr_pool_t *p);
01444 
01451 APU_DECLARE(apr_status_t) apr_bucket_file_enable_mmap(apr_bucket *b,
01452                                                       int enabled);
01453 
01455 #ifdef __cplusplus
01456 }
01457 #endif
01458 
01459 #endif /* !APR_BUCKETS_H */

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