/usr/include/pike7.8/pike/block_alloc.h is in pike7.8-dev 7.8.866-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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|| This file is part of Pike. For copyright information see COPYRIGHT.
|| Pike is distributed under GPL, LGPL and MPL. See the file COPYING
|| for more information.
|| $Id: 04b418f445150cf96536dec3ff3a523f8b6dbecd $
*/
#undef PRE_INIT_BLOCK
#undef DO_PRE_INIT_BLOCK
#undef INIT_BLOCK
#undef EXIT_BLOCK
#undef BLOCK_ALLOC
#undef LOW_PTR_HASH_ALLOC
#undef PTR_HASH_ALLOC_FIXED
#undef PTR_HASH_ALLOC
#undef COUNT_BLOCK
#undef COUNT_OTHER
#undef DMALLOC_DESCRIBE_BLOCK
#undef BLOCK_ALLOC_HSIZE_SHIFT
#undef MAX_EMPTY_BLOCKS
#undef BLOCK_ALLOC_FILL_PAGES
#undef PTR_HASH_ALLOC_FILL_PAGES
#undef PTR_HASH_ALLOC_FIXED_FILL_PAGES
/* Define this to keep freed blocks around in a backlog, which can
* help locating leftover pointers to other blocks. It can also hide
* bugs since the blocks remain intact a while after they are freed.
* Valgrind will immediately detect attempts to use blocks on the
* backlog list, though. Only available with dmalloc debug. */
/* #define DMALLOC_BLOCK_BACKLOG */
/* Note: The block_alloc mutex is held while PRE_INIT_BLOCK runs. */
#define PRE_INIT_BLOCK(X)
#define INIT_BLOCK(X)
#define EXIT_BLOCK(X)
#define COUNT_BLOCK(X)
#define COUNT_OTHER()
#define DMALLOC_DESCRIBE_BLOCK(X)
#define BLOCK_ALLOC_HSIZE_SHIFT 2
#define MAX_EMPTY_BLOCKS 4 /* Must be >= 1. */
#ifndef BLOCK_ALLOC_USED
#define BLOCK_ALLOC_USED DO_IF_DMALLOC(real_used) DO_IF_NOT_DMALLOC(used)
#endif
#if defined (DMALLOC_BLOCK_BACKLOG) && defined (DEBUG_MALLOC)
#define DO_IF_BLOCK_BACKLOG(X) X
#define DO_IF_NOT_BLOCK_BACKLOG(X)
#else
#define DO_IF_BLOCK_BACKLOG(X)
#define DO_IF_NOT_BLOCK_BACKLOG(X) X
#endif
/* Invalidate the block as far as possible if running with dmalloc.
*/
#define DO_PRE_INIT_BLOCK(X) do { \
DO_IF_DMALLOC(MEMSET((X), 0x55, sizeof(*(X)))); \
PRE_INIT_BLOCK(X); \
} while (0)
#ifndef PIKE_HASH_T
#define PIKE_HASH_T size_t
#endif /* !PIKE_HASH_T */
#ifdef PIKE_RUN_UNLOCKED
#include "threads.h"
/* Block Alloc UnLocked */
#define BA_UL(X) PIKE_CONCAT(X,_unlocked)
#define BA_STATIC static
#define BA_INLINE INLINE
#else
#define BA_UL(X) X
#define BA_STATIC
#define BA_INLINE
#endif
#define BLOCK_ALLOC_FILL_PAGES(DATA, PAGES) \
BLOCK_ALLOC(DATA, \
((PIKE_MALLOC_PAGE_SIZE * (PAGES)) \
- PIKE_MALLOC_OVERHEAD - BLOCK_HEADER_SIZE) / \
sizeof (struct DATA))
#define PTR_HASH_ALLOC_FILL_PAGES(DATA, PAGES) \
PTR_HASH_ALLOC(DATA, \
((PIKE_MALLOC_PAGE_SIZE * (PAGES)) \
- PIKE_MALLOC_OVERHEAD - BLOCK_HEADER_SIZE) / \
sizeof (struct DATA))
#define PTR_HASH_ALLOC_FIXED_FILL_PAGES(DATA, PAGES) \
PTR_HASH_ALLOC_FIXED(DATA, \
((PIKE_MALLOC_PAGE_SIZE * (PAGES)) \
- PIKE_MALLOC_OVERHEAD - BLOCK_HEADER_SIZE) / \
sizeof (struct DATA))
/* Size of the members in the block struct below that don't contain
* the payload data (i.e. that aren't x). This can be used in BSIZE to
* make the block fit within a page. */
#ifndef BLOCK_HEADER_SIZE
#define BLOCK_HEADER_SIZE (3 * sizeof (void *) + sizeof (INT32) \
DO_IF_DMALLOC( + sizeof(INT32)))
#endif
#define BLOCK_ALLOC(DATA,BSIZE) \
\
struct PIKE_CONCAT(DATA,_block) \
{ \
struct PIKE_CONCAT(DATA,_block) *next; \
struct PIKE_CONCAT(DATA,_block) *prev; \
struct DATA *PIKE_CONCAT3(free_,DATA,s); \
INT32 used; \
DO_IF_DMALLOC(INT32 real_used;) \
struct DATA x[BSIZE]; \
}; \
struct PIKE_CONCAT(DATA,_context) \
{ \
struct PIKE_CONCAT(DATA,_context) *next; \
struct PIKE_CONCAT(DATA, _block) *blocks, *free_blocks; \
INT32 num_empty_blocks; \
}; \
\
static struct PIKE_CONCAT(DATA,_context) *PIKE_CONCAT(DATA,_ctxs)=0; \
\
/* Points to a double linked list of the meta-blocks. */ \
/* Full meta-blocks are last on this list. */ \
static struct PIKE_CONCAT(DATA,_block) *PIKE_CONCAT(DATA,_blocks)=0; \
\
/* Points to the last meta-block in the DATA,_block list that isn't full. */ \
/* -1 when the block alloc isn't initialized. */ \
static struct PIKE_CONCAT(DATA,_block) *PIKE_CONCAT(DATA,_free_blocks)= \
(void*)-1; \
\
static INT32 PIKE_CONCAT3(num_empty_,DATA,_blocks)=0; \
DO_IF_RUN_UNLOCKED(static PIKE_MUTEX_T PIKE_CONCAT(DATA,_mutex);) \
DO_IF_BLOCK_BACKLOG ( \
static struct DATA *PIKE_CONCAT(DATA,s_to_free)[4 * (BSIZE)]; \
static size_t PIKE_CONCAT(DATA,s_to_free_ptr) = 0; \
) \
\
void PIKE_CONCAT3(new_,DATA,_context)(void) \
{ \
struct PIKE_CONCAT(DATA, _context) *ctx = \
(struct PIKE_CONCAT(DATA, _context) *) \
malloc(sizeof(struct PIKE_CONCAT(DATA, _context))); \
if (!ctx) { \
fprintf(stderr, "Fatal: out of memory.\n"); \
exit(17); \
} \
ctx->next = PIKE_CONCAT(DATA, _ctxs); \
PIKE_CONCAT(DATA, _ctxs) = ctx; \
ctx->blocks = PIKE_CONCAT(DATA,_blocks); \
ctx->free_blocks = PIKE_CONCAT(DATA,_free_blocks); \
ctx->num_empty_blocks = PIKE_CONCAT3(num_empty_,DATA,_blocks); \
PIKE_CONCAT(DATA,_blocks) = 0; \
PIKE_CONCAT(DATA,_free_blocks) = 0; \
PIKE_CONCAT3(num_empty_,DATA,_blocks) = 0; \
} \
\
static void PIKE_CONCAT(alloc_more_,DATA)(void) \
{ \
struct PIKE_CONCAT(DATA,_block) *n; \
size_t e; \
n=(struct PIKE_CONCAT(DATA,_block) *) \
malloc(sizeof(struct PIKE_CONCAT(DATA,_block))); \
if(!n) \
{ \
fprintf(stderr,"Fatal: out of memory.\n"); \
exit(17); \
} \
if((n->next=PIKE_CONCAT(DATA,_blocks))) \
n->next->prev=n; \
n->prev=NULL; \
n->used=0; \
DO_IF_DMALLOC(n->real_used = 0); \
PIKE_CONCAT(DATA,_blocks)=n; \
PIKE_CONCAT(DATA,_free_blocks)=n; \
\
DO_PRE_INIT_BLOCK( n->x ); \
n->x[0].BLOCK_ALLOC_NEXT=NULL; \
for(e=1;e<(BSIZE);e++) \
{ \
DO_PRE_INIT_BLOCK( (n->x+e) ); \
n->x[e].BLOCK_ALLOC_NEXT=(void *)&n->x[e-1]; \
} \
n->PIKE_CONCAT3(free_,DATA,s)=&n->x[(BSIZE)-1]; \
/* Mark the new blocks as unavailable for now... */ \
PIKE_MEM_NA(n->x); \
} \
\
BA_STATIC BA_INLINE struct DATA *BA_UL(PIKE_CONCAT(alloc_,DATA))(void) \
{ \
struct DATA *tmp; \
struct PIKE_CONCAT(DATA,_block) *blk; \
\
if(!(blk = PIKE_CONCAT(DATA,_free_blocks))) { \
PIKE_CONCAT(alloc_more_,DATA)(); \
blk = PIKE_CONCAT(DATA,_blocks); \
blk->BLOCK_ALLOC_USED++; \
} \
DO_IF_DEBUG( \
else if (PIKE_CONCAT(DATA,_free_blocks) == (void *)-1) \
Pike_fatal("Block alloc " #DATA " not initialized.\n"); \
) \
else if(!blk->BLOCK_ALLOC_USED++) \
--PIKE_CONCAT3(num_empty_,DATA,_blocks); \
DO_IF_DMALLOC(blk->used++); \
\
tmp = blk->PIKE_CONCAT3(free_,DATA,s); \
/* Mark the new block as available. */ \
PIKE_MEM_RW(*tmp); \
if(!(blk->PIKE_CONCAT3(free_,DATA,s) = (void *)tmp->BLOCK_ALLOC_NEXT)) \
PIKE_CONCAT(DATA,_free_blocks) = blk->prev; \
DO_IF_DMALLOC( \
dmalloc_unregister(tmp, 1); \
dmalloc_register(tmp,sizeof(struct DATA), DMALLOC_LOCATION()); \
) \
/* Mark the new block as available but uninitialized. */ \
PIKE_MEM_WO(*tmp); \
INIT_BLOCK(tmp); \
return tmp; \
} \
\
DO_IF_RUN_UNLOCKED( \
struct DATA *PIKE_CONCAT(alloc_,DATA)(void) \
{ \
struct DATA *ret; \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
ret=PIKE_CONCAT3(alloc_,DATA,_unlocked)(); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return ret; \
}) \
\
DO_IF_DMALLOC( \
static void PIKE_CONCAT3(dmalloc_,DATA,_not_freed) (struct DATA *d, \
const char *msg) \
{ \
/* Separate function to allow gdb breakpoints. */ \
fprintf (stderr, "struct " TOSTR(DATA) \
" at %p is still in use %s\n", d, msg); \
} \
\
static void PIKE_CONCAT(dmalloc_late_free_,DATA) (struct DATA *d) \
{ \
/* Separate function to allow gdb breakpoints. */ \
fprintf (stderr, "struct " TOSTR(DATA) " at %p freed now (too late)\n", d); \
dmalloc_mark_as_free (d, 1); \
dmalloc_unregister (d, 1); \
PIKE_MEM_NA (*d); \
} \
\
static void PIKE_CONCAT3(dmalloc_free_,DATA,_block) ( \
struct PIKE_CONCAT(DATA,_block) *blk, const char *msg) \
{ \
int dont_free = 0; \
size_t i; \
for (i = 0; i < (BSIZE); i++) { \
if (!dmalloc_check_allocated (blk->x + i, 0)) \
dmalloc_unregister (blk->x + i, 1); \
else if (dmalloc_check_allocated (blk->x + i, 1)) { \
PIKE_CONCAT3(dmalloc_,DATA,_not_freed) (blk->x + i, msg); \
DMALLOC_DESCRIBE_BLOCK ((blk->x + i)); \
debug_malloc_dump_references (blk->x + i, 0, 2, 0); \
dont_free = 1; \
} \
} \
if (dont_free) { \
/* If a block still is in use we conciously leak this */ \
/* meta-block to allow access to it later. That way we can */ \
/* avoid fatals before the leak report. */ \
dmalloc_accept_leak (blk); \
} \
else { \
/* Mark meta-block as available, since libc will mess with it. */ \
PIKE_MEM_RW (blk->x); \
free ((char *) blk); \
} \
} \
) \
\
BA_STATIC BA_INLINE \
void BA_UL(PIKE_CONCAT(really_free_,DATA))(struct DATA *d) \
{ \
struct PIKE_CONCAT(DATA,_block) *blk; \
\
EXIT_BLOCK(d); \
\
DO_IF_DMALLOC({ \
blk = PIKE_CONCAT(DATA,_free_blocks); \
if(blk == NULL || (char *)d < (char *)blk || \
(char *)d >= (char *)(blk->x+(BSIZE))) { \
blk = PIKE_CONCAT(DATA,_blocks); \
while (blk && ((char *)d < (char *)blk || \
(char *)d >= (char *)(blk->x+(BSIZE)))) \
blk = blk->next; \
} \
if (blk) { \
if (!dmalloc_check_allocated (d, 0)) { \
debug_malloc_dump_references(d, 0, 2, 0); \
Pike_fatal ("really_free_" TOSTR(DATA) " called with " \
"unknown pointer %p (probably already freed)\n", d); \
} \
blk->used--; \
dmalloc_mark_as_free(d, 1); \
DO_IF_BLOCK_BACKLOG({ \
struct DATA *d2 = \
PIKE_CONCAT(DATA,s_to_free)[PIKE_CONCAT(DATA,s_to_free_ptr)]; \
PIKE_MEM_NA(*d); \
PIKE_CONCAT(DATA,s_to_free)[PIKE_CONCAT(DATA,s_to_free_ptr)] = d; \
PIKE_CONCAT(DATA,s_to_free_ptr) = \
(PIKE_CONCAT(DATA,s_to_free_ptr) + 1) % \
NELEM(PIKE_CONCAT(DATA,s_to_free)); \
if ((d = d2)) \
PIKE_MEM_WO(*d); \
else \
return; \
}); \
} \
else if (dmalloc_check_allocated (d, 0)) { \
PIKE_CONCAT(dmalloc_late_free_,DATA) (d); \
return; \
} \
}); \
\
blk = PIKE_CONCAT(DATA,_free_blocks); \
if(blk == NULL || (char *)d < (char *)blk || \
(char *)d >= (char *)(blk->x+(BSIZE))) { \
blk = PIKE_CONCAT(DATA,_blocks); \
DO_IF_DEBUG ( \
if (!blk) Pike_fatal ("really_free_" TOSTR(DATA) \
" got invalid pointer %p\n", d) \
); \
if((char *)d < (char *)blk || \
(char *)d >= (char *)(blk->x+(BSIZE))) { \
do { \
blk = blk->next; \
DO_IF_DEBUG ( \
if (!blk) Pike_fatal ("really_free_" TOSTR(DATA) \
" got invalid pointer %p\n", d) \
); \
} while((char *)d < (char *)blk || \
(char *)d >= (char *)(blk->x+(BSIZE))); \
if(blk == PIKE_CONCAT(DATA,_free_blocks)) \
PIKE_CONCAT(DATA,_free_blocks) = blk->prev; \
blk->prev->next = blk->next; \
if(blk->next) \
blk->next->prev = blk->prev; \
blk->prev = NULL; \
blk->next = PIKE_CONCAT(DATA,_blocks); \
blk->next->prev = blk; \
PIKE_CONCAT(DATA,_blocks) = blk; \
} \
if(PIKE_CONCAT(DATA,_free_blocks) == NULL) \
PIKE_CONCAT(DATA,_free_blocks) = blk; \
} \
\
DO_IF_DEBUG ( \
if ((char *) d < (char *) &blk->x || \
((char *) d - (char *) &blk->x) % sizeof (struct DATA)) \
Pike_fatal ("really_free_" TOSTR(DATA) \
" got misaligned pointer %p\n", d); \
); \
\
DO_PRE_INIT_BLOCK(d); \
DO_IF_BLOCK_BACKLOG ({ \
struct DATA *d2 = (void *)blk->PIKE_CONCAT3(free_,DATA,s); \
d->BLOCK_ALLOC_NEXT = NULL; \
if (d2) { \
while (d2->BLOCK_ALLOC_NEXT) { \
if (PTR_TO_INT(d2->BLOCK_ALLOC_NEXT) == 0x55555555) { \
debug_malloc_dump_references(d2, 0, 2, 0); \
Pike_fatal("Bad next pointer in free list.\n"); \
} \
d2 = (void *)d2->BLOCK_ALLOC_NEXT; \
} \
d2->BLOCK_ALLOC_NEXT = (void *)d; \
} else { \
blk->PIKE_CONCAT3(free_,DATA,s)=d; \
} \
}); \
DO_IF_NOT_BLOCK_BACKLOG ({ \
d->BLOCK_ALLOC_NEXT = (void *)blk->PIKE_CONCAT3(free_,DATA,s); \
blk->PIKE_CONCAT3(free_,DATA,s)=d; \
}); \
/* Mark block as unavailable. */ \
PIKE_MEM_NA(*d); \
\
if(!--blk->BLOCK_ALLOC_USED && \
++PIKE_CONCAT3(num_empty_,DATA,_blocks) > MAX_EMPTY_BLOCKS) { \
if(blk == PIKE_CONCAT(DATA,_free_blocks)) { \
/* blk->prev isn't NULL because MAX_EMPTY_BLOCKS >= 1 so we */ \
/* know there's at least one more empty block. */ \
if((blk->prev->next = blk->next)) \
blk->next->prev = blk->prev; \
PIKE_CONCAT(DATA,_free_blocks) = blk->prev; \
} else { \
PIKE_CONCAT(DATA,_blocks) = blk->next; \
blk->next->prev = NULL; \
} \
\
DO_IF_DMALLOC ( \
PIKE_CONCAT3(dmalloc_free_,DATA,_block) ( \
blk, "in block expected to be empty") \
); \
DO_IF_NOT_DMALLOC( \
/* Mark meta-block as available, since libc will mess with it. */ \
PIKE_MEM_RW(*blk); \
free(blk); \
); \
\
--PIKE_CONCAT3(num_empty_,DATA,_blocks); \
} \
} \
\
DO_IF_RUN_UNLOCKED( \
void PIKE_CONCAT(really_free_,DATA)(struct DATA *d) \
{ \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
BA_UL(PIKE_CONCAT(really_free_,DATA))(d); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
}) \
\
static void PIKE_CONCAT3(free_all_,DATA,_blocks_unlocked)(void) \
{ \
struct PIKE_CONCAT(DATA,_block) *tmp; \
\
DO_IF_DMALLOC( \
DO_IF_BLOCK_BACKLOG ( \
MEMSET(PIKE_CONCAT(DATA,s_to_free), 0, \
sizeof(PIKE_CONCAT(DATA,s_to_free))); \
); \
while ((tmp = PIKE_CONCAT(DATA,_blocks))) { \
PIKE_CONCAT(DATA,_blocks) = tmp->next; \
PIKE_CONCAT3(dmalloc_free_,DATA,_block) ( \
tmp, "in free_all_" TOSTR(DATA) "_blocks"); \
} \
); \
\
DO_IF_NOT_DMALLOC( \
while((tmp=PIKE_CONCAT(DATA,_blocks))) \
{ \
PIKE_CONCAT(DATA,_blocks)=tmp->next; \
/* Mark meta-block as available, since libc will mess with it. */ \
PIKE_MEM_RW(tmp->x); \
free((char *)tmp); \
} \
); \
\
if (PIKE_CONCAT(DATA,_ctxs)) { \
struct PIKE_CONCAT(DATA, _context) *ctx = PIKE_CONCAT(DATA,_ctxs); \
PIKE_CONCAT(DATA,_blocks)=ctx->blocks; \
PIKE_CONCAT(DATA,_free_blocks)=ctx->free_blocks; \
PIKE_CONCAT3(num_empty_,DATA,_blocks)=ctx->num_empty_blocks; \
PIKE_CONCAT(DATA,_ctxs) = ctx->next; \
free(ctx); \
} else { \
PIKE_CONCAT(DATA,_blocks)=0; \
PIKE_CONCAT(DATA,_free_blocks)=0; \
PIKE_CONCAT3(num_empty_,DATA,_blocks)=0; \
} \
} \
\
void PIKE_CONCAT3(free_all_,DATA,_blocks)(void) \
{ \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
PIKE_CONCAT3(free_all_,DATA,_blocks_unlocked)(); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
} \
\
void PIKE_CONCAT3(count_memory_in_,DATA,s)(size_t *num_, size_t *size_) \
{ \
size_t num=0, size=0; \
struct PIKE_CONCAT(DATA,_block) *tmp; \
struct PIKE_CONCAT(DATA,_context) *ctx = PIKE_CONCAT(DATA,_ctxs); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
for(tmp=PIKE_CONCAT(DATA,_blocks);tmp;tmp=tmp->next) \
{ \
size+=sizeof(struct PIKE_CONCAT(DATA,_block)); \
num+=tmp->used; \
COUNT_BLOCK(tmp); \
} \
while (ctx) { \
for(tmp=ctx->blocks;tmp;tmp=tmp->next) \
{ \
size+=sizeof(struct PIKE_CONCAT(DATA,_block)); \
num+=tmp->used; \
COUNT_BLOCK(tmp); \
} \
ctx = ctx->next; \
} \
COUNT_OTHER(); \
*num_=num; \
*size_=size; \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
} \
\
\
void PIKE_CONCAT3(init_,DATA,_blocks)(void) \
{ \
/* DO_IF_RUN_UNLOCKED(mt_init_recursive(&PIKE_CONCAT(DATA,_mutex)));*/ \
DO_IF_RUN_UNLOCKED(mt_init(&PIKE_CONCAT(DATA,_mutex))); \
PIKE_CONCAT(DATA,_free_blocks)=0; \
}
#define LOW_PTR_HASH_ALLOC(DATA,BSIZE) \
\
BLOCK_ALLOC(DATA,BSIZE) \
\
struct DATA **PIKE_CONCAT(DATA,_hash_table)=0; \
size_t PIKE_CONCAT(DATA,_hash_table_size)=0; \
size_t PIKE_CONCAT(DATA,_hash_table_magnitude)=0; \
static size_t PIKE_CONCAT(num_,DATA)=0; \
\
static INLINE struct DATA * \
PIKE_CONCAT3(really_low_find_,DATA,_unlocked)(void *ptr, \
PIKE_HASH_T hval) \
{ \
struct DATA *p,**pp; \
p=PIKE_CONCAT(DATA,_hash_table)[hval]; \
if(!p || p->PTR_HASH_ALLOC_DATA == ptr) \
{ \
return p; \
} \
while((p=*(pp=&p->BLOCK_ALLOC_NEXT))) \
{ \
if(p->PTR_HASH_ALLOC_DATA==ptr) \
{ \
*pp=p->BLOCK_ALLOC_NEXT; \
p->BLOCK_ALLOC_NEXT=PIKE_CONCAT(DATA,_hash_table)[hval]; \
PIKE_CONCAT(DATA,_hash_table)[hval]=p; \
return p; \
} \
} \
return 0; \
} \
\
struct DATA *PIKE_CONCAT(find_,DATA)(void *ptr) \
{ \
struct DATA *p; \
PIKE_HASH_T hval = (PIKE_HASH_T)PTR_TO_INT(ptr); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
if(!PIKE_CONCAT(DATA,_hash_table)) { \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return 0; \
} \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
p=PIKE_CONCAT3(really_low_find_,DATA,_unlocked)(ptr, hval); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return p; \
} \
\
static INLINE struct DATA * \
PIKE_CONCAT3(just_find_,DATA,_unlocked)(void *ptr, \
PIKE_HASH_T hval) \
{ \
struct DATA *p; \
p=PIKE_CONCAT(DATA,_hash_table)[hval]; \
if(!p || p->PTR_HASH_ALLOC_DATA == ptr) \
{ \
return p; \
} \
while((p=p->BLOCK_ALLOC_NEXT)) \
{ \
if(p->PTR_HASH_ALLOC_DATA==ptr) return p; \
} \
return 0; \
} \
\
static struct DATA *PIKE_CONCAT(just_find_,DATA)(void *ptr) \
{ \
struct DATA *p; \
PIKE_HASH_T hval = (PIKE_HASH_T)PTR_TO_INT(ptr); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
if(!PIKE_CONCAT(DATA,_hash_table)) { \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return 0; \
} \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
p=PIKE_CONCAT3(just_find_,DATA,_unlocked)(ptr, hval); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return p; \
} \
\
\
\
struct DATA *PIKE_CONCAT(make_,DATA)(void *ptr) \
{ \
struct DATA *p; \
PIKE_HASH_T hval = (PIKE_HASH_T)PTR_TO_INT(ptr); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
p=PIKE_CONCAT3(make_,DATA,_unlocked)(ptr,hval); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return p; \
} \
\
struct DATA *PIKE_CONCAT(get_,DATA)(void *ptr) \
{ \
struct DATA *p; \
PIKE_HASH_T hval = (PIKE_HASH_T)PTR_TO_INT(ptr); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
if(!(p=PIKE_CONCAT3(really_low_find_,DATA,_unlocked)(ptr, hval))) \
p=PIKE_CONCAT3(make_,DATA,_unlocked)(ptr, hval); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return p; \
} \
\
int PIKE_CONCAT3(check_,DATA,_semaphore)(void *ptr) \
{ \
PIKE_HASH_T hval = (PIKE_HASH_T)PTR_TO_INT(ptr); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
if(PIKE_CONCAT3(really_low_find_,DATA,_unlocked)(ptr, hval)) \
{ \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return 0; \
} \
\
PIKE_CONCAT3(make_,DATA,_unlocked)(ptr, hval); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return 1; \
} \
\
void PIKE_CONCAT(move_,DATA)(struct DATA *block, void *new_ptr) \
{ \
PIKE_HASH_T hval = \
(PIKE_HASH_T)PTR_TO_INT(block->PTR_HASH_ALLOC_DATA); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
if (!PIKE_CONCAT3(really_low_find_,DATA,_unlocked)( \
block->PTR_HASH_ALLOC_DATA, hval)) \
Pike_fatal("The block to move wasn't found.\n"); \
DO_IF_DEBUG( \
if (PIKE_CONCAT(DATA,_hash_table)[hval] != block) \
Pike_fatal("Expected the block to be at the top of the hash chain.\n"); \
); \
PIKE_CONCAT(DATA,_hash_table)[hval] = block->BLOCK_ALLOC_NEXT; \
block->PTR_HASH_ALLOC_DATA = new_ptr; \
hval = (PIKE_HASH_T)PTR_TO_INT(new_ptr) % \
(PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
block->BLOCK_ALLOC_NEXT = PIKE_CONCAT(DATA,_hash_table)[hval]; \
PIKE_CONCAT(DATA,_hash_table)[hval] = block; \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
} \
\
int PIKE_CONCAT(remove_,DATA)(void *ptr) \
{ \
struct DATA *p; \
PIKE_HASH_T hval = (PIKE_HASH_T)PTR_TO_INT(ptr); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
if(!PIKE_CONCAT(DATA,_hash_table)) \
{ \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return 0; \
} \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
if((p=PIKE_CONCAT3(really_low_find_,DATA,_unlocked)(ptr, hval))) \
{ \
PIKE_CONCAT(num_,DATA)--; \
DO_IF_DEBUG( if(PIKE_CONCAT(DATA,_hash_table)[hval]!=p) \
Pike_fatal("GAOssdf\n"); ); \
PIKE_CONCAT(DATA,_hash_table)[hval]=p->BLOCK_ALLOC_NEXT; \
BA_UL(PIKE_CONCAT(really_free_,DATA))(p); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return 1; \
} \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
return 0; \
} \
\
void PIKE_CONCAT3(low_init_,DATA,_hash)(size_t size) \
{ \
extern const INT32 hashprimes[32]; \
extern int my_log2(size_t x); \
PIKE_CONCAT3(init_,DATA,_blocks)(); \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
PIKE_CONCAT(DATA,_hash_table_size)= \
hashprimes[PIKE_CONCAT(DATA,_hash_table_magnitude)=my_log2(size)]; \
\
PIKE_CONCAT(DATA,_hash_table)=(struct DATA **) \
malloc(sizeof(struct DATA *)*PIKE_CONCAT(DATA,_hash_table_size)); \
if(!PIKE_CONCAT(DATA,_hash_table)) \
{ \
fprintf(stderr,"Fatal: out of memory.\n"); \
exit(17); \
} \
MEMSET(PIKE_CONCAT(DATA,_hash_table),0, \
sizeof(struct DATA *)*PIKE_CONCAT(DATA,_hash_table_size)); \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
} \
\
\
void PIKE_CONCAT3(init_,DATA,_hash)(void) \
{ \
PIKE_CONCAT3(low_init_,DATA,_hash)(BSIZE); \
} \
\
void PIKE_CONCAT3(exit_,DATA,_hash)(void) \
{ \
DO_IF_RUN_UNLOCKED(mt_lock(&PIKE_CONCAT(DATA,_mutex))); \
PIKE_CONCAT3(free_all_,DATA,_blocks_unlocked)(); \
free(PIKE_CONCAT(DATA,_hash_table)); \
PIKE_CONCAT(DATA,_hash_table)=0; \
PIKE_CONCAT(num_,DATA)=0; \
DO_IF_RUN_UNLOCKED(mt_unlock(&PIKE_CONCAT(DATA,_mutex))); \
}
#define PTR_HASH_ALLOC_FIXED(DATA,BSIZE) \
struct DATA *PIKE_CONCAT3(make_,DATA,_unlocked)(void *ptr, PIKE_HASH_T hval);\
LOW_PTR_HASH_ALLOC(DATA,BSIZE) \
\
struct DATA *PIKE_CONCAT3(make_,DATA,_unlocked)(void *ptr, PIKE_HASH_T hval) \
{ \
struct DATA *p; \
\
DO_IF_DEBUG( if(!PIKE_CONCAT(DATA,_hash_table)) \
Pike_fatal("Hash table error!\n"); ) \
PIKE_CONCAT(num_,DATA)++; \
\
p=BA_UL(PIKE_CONCAT(alloc_,DATA))(); \
p->PTR_HASH_ALLOC_DATA=ptr; \
p->BLOCK_ALLOC_NEXT=PIKE_CONCAT(DATA,_hash_table)[hval]; \
PIKE_CONCAT(DATA,_hash_table)[hval]=p; \
return p; \
}
#define PTR_HASH_ALLOC(DATA,BSIZE) \
struct DATA *PIKE_CONCAT3(make_,DATA,_unlocked)(void *ptr, \
PIKE_HASH_T hval); \
LOW_PTR_HASH_ALLOC(DATA,BSIZE) \
\
static void PIKE_CONCAT(DATA,_rehash)(void) \
{ \
/* Time to re-hash */ \
extern const INT32 hashprimes[32]; \
struct DATA **old_hash; \
struct DATA *p; \
PIKE_HASH_T hval; \
size_t e; \
\
old_hash= PIKE_CONCAT(DATA,_hash_table); \
e=PIKE_CONCAT(DATA,_hash_table_size); \
\
PIKE_CONCAT(DATA,_hash_table_magnitude)++; \
PIKE_CONCAT(DATA,_hash_table_size)= \
hashprimes[PIKE_CONCAT(DATA,_hash_table_magnitude)]; \
if((PIKE_CONCAT(DATA,_hash_table)=(struct DATA **) \
malloc(PIKE_CONCAT(DATA,_hash_table_size)* \
sizeof(struct DATA *)))) \
{ \
MEMSET(PIKE_CONCAT(DATA,_hash_table),0, \
sizeof(struct DATA *)*PIKE_CONCAT(DATA,_hash_table_size)); \
while(e-- > 0) \
{ \
while((p=old_hash[e])) \
{ \
old_hash[e]=p->BLOCK_ALLOC_NEXT; \
hval = (PIKE_HASH_T)PTR_TO_INT(p->PTR_HASH_ALLOC_DATA); \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
p->BLOCK_ALLOC_NEXT=PIKE_CONCAT(DATA,_hash_table)[hval]; \
PIKE_CONCAT(DATA,_hash_table)[hval]=p; \
} \
} \
free((char *)old_hash); \
}else{ \
PIKE_CONCAT(DATA,_hash_table)=old_hash; \
PIKE_CONCAT(DATA,_hash_table_size)=e; \
} \
} \
\
struct DATA *PIKE_CONCAT3(make_,DATA,_unlocked)(void *ptr, \
PIKE_HASH_T hval) \
{ \
struct DATA *p; \
\
DO_IF_DEBUG( if(!PIKE_CONCAT(DATA,_hash_table)) \
Pike_fatal("Hash table error!\n"); ) \
PIKE_CONCAT(num_,DATA)++; \
\
if(( PIKE_CONCAT(num_,DATA)>>BLOCK_ALLOC_HSIZE_SHIFT ) >= \
PIKE_CONCAT(DATA,_hash_table_size)) \
{ \
PIKE_CONCAT(DATA,_rehash)(); \
hval = (PIKE_HASH_T)PTR_TO_INT(ptr); \
hval %= (PIKE_HASH_T)PIKE_CONCAT(DATA,_hash_table_size); \
} \
\
p=BA_UL(PIKE_CONCAT(alloc_,DATA))(); \
p->PTR_HASH_ALLOC_DATA=ptr; \
p->BLOCK_ALLOC_NEXT=PIKE_CONCAT(DATA,_hash_table)[hval]; \
PIKE_CONCAT(DATA,_hash_table)[hval]=p; \
return p; \
}
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