*
*/
+#if defined(PERL_CORE) && !defined(DEBUGGING_MSTATS)
+# define DEBUGGING_MSTATS
+#endif
+
#ifndef lint
-#ifdef DEBUGGING
-#define RCHECK
-#endif
+# if defined(DEBUGGING) && !defined(NO_RCHECK)
+# define RCHECK
+# endif
/*
* malloc.c (Caltech) 2/21/82
* Chris Kingsley, kingsley@cit-20.
#define MAGIC 0xff /* magic # on accounting info */
#define RMAGIC 0x55555555 /* magic # on range info */
#ifdef RCHECK
-#define RSLOP sizeof (u_int)
+# define RSLOP sizeof (u_int)
+# ifdef TWO_POT_OPTIMIZE
+# define MAX_SHORT_BUCKET 12
+# else
+# define MAX_SHORT_BUCKET 13
+# endif
#else
-#define RSLOP 0
+# define RSLOP 0
#endif
#ifdef PACK_MALLOC
}
if (!emergency_buffer) {
+ dTHR;
/* First offense, give a possibility to recover by dieing. */
/* No malloc involved here: */
GV **gvp = (GV**)hv_fetch(defstash, "^M", 2, 0);
#ifdef USE_PERL_SBRK
#define sbrk(a) Perl_sbrk(a)
char * Perl_sbrk _((int size));
+#else
+#ifdef DONT_DECLARE_STD
+#ifdef I_UNISTD
+#include <unistd.h>
+#endif
#else
-extern char *sbrk();
+extern char *sbrk(int);
+#endif
#endif
#ifdef DEBUGGING_MSTATS
#ifdef DEBUGGING
#define ASSERT(p) if (!(p)) botch(STRINGIFY(p)); else
static void
-botch(s)
- char *s;
+botch(char *s)
{
PerlIO_printf(PerlIO_stderr(), "assertion botched: %s\n", s);
abort();
#endif
Malloc_t
-malloc(nbytes)
- register MEM_SIZE nbytes;
+malloc(register size_t nbytes)
{
register union overhead *p;
register int bucket = 0;
register MEM_SIZE shiftr;
-#ifdef PERL_CORE
-#ifdef DEBUGGING
+#if defined(DEBUGGING) || defined(RCHECK)
MEM_SIZE size = nbytes;
#endif
+#ifdef PERL_CORE
#ifdef HAS_64K_LIMIT
if (nbytes > 0xffff) {
- PerlIO_printf(PerlIO_stderr(), "Allocation too large: %lx\n", (long)nbytes);
+ PerlIO_printf(PerlIO_stderr(),
+ "Allocation too large: %lx\n", (long)nbytes);
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
#ifdef DEBUGGING
if ((long)nbytes < 0)
- croak("panic: malloc");
+ croak("panic: malloc");
#endif
#endif /* PERL_CORE */
+ MUTEX_LOCK(&malloc_mutex);
/*
* Convert amount of memory requested into
* closest block size stored in hash buckets
* space used per block for accounting.
*/
#ifdef PACK_MALLOC
- if (nbytes > MAX_2_POT_ALGO) {
+ if (nbytes == 0)
+ nbytes = 1;
+ else if (nbytes > MAX_2_POT_ALGO)
#endif
+ {
#ifdef TWO_POT_OPTIMIZE
- if (nbytes >= FIRST_BIG_BOUND) {
- nbytes -= PERL_PAGESIZE;
- }
+ if (nbytes >= FIRST_BIG_BOUND)
+ nbytes -= PERL_PAGESIZE;
#endif
- nbytes += M_OVERHEAD;
- nbytes = (nbytes + 3) &~ 3;
-#ifdef PACK_MALLOC
- } else if (nbytes == 0) {
- nbytes = 1;
+ nbytes += M_OVERHEAD;
+ nbytes = (nbytes + 3) &~ 3;
}
-#endif
shiftr = (nbytes - 1) >> 2;
/* apart from this loop, this is O(1) */
while (shiftr >>= 1)
if (nextf[bucket] == NULL)
morecore(bucket);
if ((p = (union overhead *)nextf[bucket]) == NULL) {
+ MUTEX_UNLOCK(&malloc_mutex);
#ifdef PERL_CORE
if (!nomemok) {
PerlIO_puts(PerlIO_stderr(),"Out of memory!\n");
}
#ifdef PERL_CORE
- DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) malloc %ld bytes\n",
- (unsigned long)(p+1),an++,(long)size));
+ DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05lu) malloc %ld bytes\n",
+ (unsigned long)(p+1),(unsigned long)(an++),(long)size));
#endif /* PERL_CORE */
/* remove from linked list */
* Record allocated size of block and
* bound space with magic numbers.
*/
+ nbytes = (size + M_OVERHEAD + 3) &~ 3;
if (nbytes <= 0x10000)
p->ov_size = nbytes - 1;
p->ov_rmagic = RMAGIC;
*((u_int *)((caddr_t)p + nbytes - RSLOP)) = RMAGIC;
#endif
+ MUTEX_UNLOCK(&malloc_mutex);
return ((Malloc_t)(p + CHUNK_SHIFT));
}
* Allocate more memory to the indicated bucket.
*/
static void
-morecore(bucket)
- register int bucket;
+morecore(register int bucket)
{
- register union overhead *op;
+ register union overhead *ovp;
register int rnu; /* 2^rnu bytes will be requested */
register int nblks; /* become nblks blocks of the desired size */
register MEM_SIZE siz, needed;
* make getpageize call?
*/
#ifndef atarist /* on the atari we dont have to worry about this */
- op = (union overhead *)sbrk(0);
+ ovp = (union overhead *)sbrk(0);
# ifndef I286
-# ifdef PACK_MALLOC
- if ((u_int)op & 0x7ff)
- (void)sbrk(slack = 2048 - ((u_int)op & 0x7ff));
-# else
- if ((u_int)op & 0x3ff)
- (void)sbrk(slack = 1024 - ((u_int)op & 0x3ff));
-# endif
+ if ((UV)ovp & (0x7FF >> CHUNK_SHIFT)) {
+ slack = (0x800 >> CHUNK_SHIFT) - ((UV)ovp & (0x7FF >> CHUNK_SHIFT));
+ (void)sbrk(slack);
# if defined(DEBUGGING_MSTATS)
- sbrk_slack += slack;
+ sbrk_slack += slack;
# endif
+ }
# else
/* The sbrk(0) call on the I286 always returns the next segment */
# endif
#ifdef TWO_POT_OPTIMIZE
needed += (bucket >= (FIRST_BIG_TWO_POT - 3) ? PERL_PAGESIZE : 0);
#endif
- op = (union overhead *)sbrk(needed);
+ ovp = (union overhead *)sbrk(needed);
/* no more room! */
- if (op == (union overhead *)-1) {
- op = (union overhead *)emergency_sbrk(needed);
- if (op == (union overhead *)-1)
+ if (ovp == (union overhead *)-1) {
+ ovp = (union overhead *)emergency_sbrk(needed);
+ if (ovp == (union overhead *)-1)
return;
}
#ifdef DEBUGGING_MSTATS
*/
#ifndef I286
# ifdef PACK_MALLOC
- if ((u_int)op & 0x7ff)
+ if ((UV)ovp & 0x7FF)
croak("panic: Off-page sbrk");
# endif
- if ((u_int)op & 7) {
- op = (union overhead *)(((MEM_SIZE)op + 8) &~ 7);
+ if ((UV)ovp & 7) {
+ ovp = (union overhead *)(((UV)ovp + 8) & ~7);
nblks--;
}
#else
*/
siz = 1 << (bucket + 3);
#ifdef PACK_MALLOC
- *(u_char*)op = bucket; /* Fill index. */
+ *(u_char*)ovp = bucket; /* Fill index. */
if (bucket <= MAX_PACKED - 3) {
- op = (union overhead *) ((char*)op + blk_shift[bucket]);
+ ovp = (union overhead *) ((char*)ovp + blk_shift[bucket]);
nblks = n_blks[bucket];
# ifdef DEBUGGING_MSTATS
start_slack += blk_shift[bucket];
# endif
} else if (bucket <= 11 - 1 - 3) {
- op = (union overhead *) ((char*)op + blk_shift[bucket]);
+ ovp = (union overhead *) ((char*)ovp + blk_shift[bucket]);
/* nblks = n_blks[bucket]; */
siz -= sizeof(union overhead);
- } else op++; /* One chunk per block. */
+ } else ovp++; /* One chunk per block. */
#endif /* !PACK_MALLOC */
- nextf[bucket] = op;
+ nextf[bucket] = ovp;
#ifdef DEBUGGING_MSTATS
nmalloc[bucket] += nblks;
#endif
while (--nblks > 0) {
- op->ov_next = (union overhead *)((caddr_t)op + siz);
- op = (union overhead *)((caddr_t)op + siz);
+ ovp->ov_next = (union overhead *)((caddr_t)ovp + siz);
+ ovp = (union overhead *)((caddr_t)ovp + siz);
}
/* Not all sbrks return zeroed memory.*/
- op->ov_next = (union overhead *)NULL;
+ ovp->ov_next = (union overhead *)NULL;
#ifdef PACK_MALLOC
if (bucket == 7 - 3) { /* Special case, explanation is above. */
union overhead *n_op = nextf[7 - 3]->ov_next;
}
Free_t
-free(mp)
- Malloc_t mp;
+free(void *mp)
{
register MEM_SIZE size;
- register union overhead *op;
+ register union overhead *ovp;
char *cp = (char*)mp;
#ifdef PACK_MALLOC
u_char bucket;
#endif
#ifdef PERL_CORE
- DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05d) free\n",(unsigned long)cp,an++));
+ DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%lx: (%05lu) free\n",(unsigned long)cp,(unsigned long)(an++)));
#endif /* PERL_CORE */
if (cp == NULL)
return;
- op = (union overhead *)((caddr_t)cp
- - sizeof (union overhead) * CHUNK_SHIFT);
+ ovp = (union overhead *)((caddr_t)cp
+ - sizeof (union overhead) * CHUNK_SHIFT);
#ifdef PACK_MALLOC
- bucket = OV_INDEX(op);
+ bucket = OV_INDEX(ovp);
#endif
-#ifdef DEBUGGING
- ASSERT(OV_MAGIC(op, bucket) == MAGIC); /* make sure it was in use */
-#else
- if (OV_MAGIC(op, bucket) != MAGIC) {
- static bad_free_warn = -1;
+ if (OV_MAGIC(ovp, bucket) != MAGIC) {
+ static int bad_free_warn = -1;
if (bad_free_warn == -1) {
char *pbf = getenv("PERL_BADFREE");
bad_free_warn = (pbf) ? atoi(pbf) : 1;
return;
#ifdef RCHECK
warn("%s free() ignored",
- op->ov_rmagic == RMAGIC - 1 ? "Duplicate" : "Bad");
+ ovp->ov_rmagic == RMAGIC - 1 ? "Duplicate" : "Bad");
#else
warn("Bad free() ignored");
#endif
return; /* sanity */
}
-#endif
+ MUTEX_LOCK(&malloc_mutex);
#ifdef RCHECK
- ASSERT(op->ov_rmagic == RMAGIC);
- if (OV_INDEX(op) <= 13)
- ASSERT(*(u_int *)((caddr_t)op + op->ov_size + 1 - RSLOP) == RMAGIC);
- op->ov_rmagic = RMAGIC - 1;
-#endif
- ASSERT(OV_INDEX(op) < NBUCKETS);
- size = OV_INDEX(op);
- op->ov_next = nextf[size];
- nextf[size] = op;
+ ASSERT(ovp->ov_rmagic == RMAGIC);
+ if (OV_INDEX(ovp) <= MAX_SHORT_BUCKET)
+ ASSERT(*(u_int *)((caddr_t)ovp + ovp->ov_size + 1 - RSLOP) == RMAGIC);
+ ovp->ov_rmagic = RMAGIC - 1;
+#endif
+ ASSERT(OV_INDEX(ovp) < NBUCKETS);
+ size = OV_INDEX(ovp);
+ ovp->ov_next = nextf[size];
+ nextf[size] = ovp;
+ MUTEX_UNLOCK(&malloc_mutex);
}
/*
int reall_srchlen = 4; /* 4 should be plenty, -1 =>'s whole list */
Malloc_t
-realloc(mp, nbytes)
- Malloc_t mp;
- MEM_SIZE nbytes;
+realloc(void *mp, size_t nbytes)
{
register MEM_SIZE onb;
- union overhead *op;
+ union overhead *ovp;
char *res;
register int i;
int was_alloced = 0;
char *cp = (char*)mp;
-#ifdef PERL_CORE
#ifdef DEBUGGING
MEM_SIZE size = nbytes;
#endif
+#ifdef PERL_CORE
#ifdef HAS_64K_LIMIT
if (nbytes > 0xffff) {
- PerlIO_printf(PerlIO_stderr(), "Reallocation too large: %lx\n", size);
+ PerlIO_printf(PerlIO_stderr(),
+ "Reallocation too large: %lx\n", size);
my_exit(1);
}
#endif /* HAS_64K_LIMIT */
#endif
#endif /* PERL_CORE */
- op = (union overhead *)((caddr_t)cp
- - sizeof (union overhead) * CHUNK_SHIFT);
- i = OV_INDEX(op);
- if (OV_MAGIC(op, i) == MAGIC) {
+ MUTEX_LOCK(&malloc_mutex);
+ ovp = (union overhead *)((caddr_t)cp
+ - sizeof (union overhead) * CHUNK_SHIFT);
+ i = OV_INDEX(ovp);
+ if (OV_MAGIC(ovp, i) == MAGIC) {
was_alloced = 1;
} else {
/*
* the memory block being realloc'd is the
* smallest possible.
*/
- if ((i = findbucket(op, 1)) < 0 &&
- (i = findbucket(op, reall_srchlen)) < 0)
+ if ((i = findbucket(ovp, 1)) < 0 &&
+ (i = findbucket(ovp, reall_srchlen)) < 0)
i = 0;
}
onb = (1L << (i + 3)) -
* Record new allocated size of block and
* bound space with magic numbers.
*/
- if (OV_INDEX(op) <= 13) {
+ if (OV_INDEX(ovp) <= MAX_SHORT_BUCKET) {
/*
* Convert amount of memory requested into
* closest block size stored in hash buckets
*/
nbytes += M_OVERHEAD;
nbytes = (nbytes + 3) &~ 3;
- op->ov_size = nbytes - 1;
- *((u_int *)((caddr_t)op + nbytes - RSLOP)) = RMAGIC;
+ ovp->ov_size = nbytes - 1;
+ *((u_int *)((caddr_t)ovp + nbytes - RSLOP)) = RMAGIC;
}
#endif
res = cp;
+ MUTEX_UNLOCK(&malloc_mutex);
}
else {
+ MUTEX_UNLOCK(&malloc_mutex);
if ((res = (char*)malloc(nbytes)) == NULL)
return (NULL);
if (cp != res) /* common optimization */
#ifdef PERL_CORE
#ifdef DEBUGGING
if (debug & 128) {
- PerlIO_printf(PerlIO_stderr(), "0x%lx: (%05d) rfree\n",(unsigned long)res,an++);
- PerlIO_printf(PerlIO_stderr(), "0x%lx: (%05d) realloc %ld bytes\n",
- (unsigned long)res,an++,(long)size);
+ PerlIO_printf(Perl_debug_log, "0x%lx: (%05lu) rfree\n",(unsigned long)res,(unsigned long)(an++));
+ PerlIO_printf(Perl_debug_log, "0x%lx: (%05lu) realloc %ld bytes\n",
+ (unsigned long)res,(unsigned long)(an++),(long)size);
}
#endif
#endif /* PERL_CORE */
* Return bucket number, or -1 if not found.
*/
static int
-findbucket(freep, srchlen)
- union overhead *freep;
- int srchlen;
+findbucket(union overhead *freep, int srchlen)
{
register union overhead *p;
register int i, j;
}
Malloc_t
-calloc(elements, size)
- register MEM_SIZE elements;
- register MEM_SIZE size;
+calloc(register size_t elements, register size_t size)
{
long sz = elements * size;
Malloc_t p = malloc(sz);
* frees for each size category.
*/
void
-dump_mstats(s)
- char *s;
+dump_mstats(char *s)
{
register int i, j;
register union overhead *p;
}
#else
void
-dump_mstats(s)
- char *s;
+dump_mstats(char *s)
{
}
#endif
#ifdef PERL_CORE
reqsize = size; /* just for the DEBUG_m statement */
#endif
+#ifdef PACK_MALLOC
+ size = (size + 0x7ff) & ~0x7ff;
+#endif
if (size <= Perl_sbrk_oldsize) {
got = Perl_sbrk_oldchunk;
Perl_sbrk_oldchunk += size;
small = 1;
}
got = (IV)SYSTEM_ALLOC(size);
+#ifdef PACK_MALLOC
+ got = (got + 0x7ff) & ~0x7ff;
+#endif
if (small) {
/* Chunk is small, register the rest for future allocs. */
Perl_sbrk_oldchunk = got + reqsize;
}
#ifdef PERL_CORE
- DEBUG_m(PerlIO_printf(PerlIO_stderr(), "sbrk malloc size %ld (reqsize %ld), left size %ld, give addr 0x%lx\n",
+ DEBUG_m(PerlIO_printf(Perl_debug_log, "sbrk malloc size %ld (reqsize %ld), left size %ld, give addr 0x%lx\n",
size, reqsize, Perl_sbrk_oldsize, got));
#endif
projects / p5sagit/p5-mst-13.2.git / blobdiff