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* stdlib/stdlib.h: Define __compar_d_fn_t. Declare qsort_r.

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* include/stdlib.h: Add hidden_proto for qsort_t and adjust protoype
	for _quicksort.
	* stdlib/msort.c (qsort): Now a wrapper around qsort_r.
	(qsort_r): Renamed from qsort.  Take additional parameter and pass it
	on as third parameter to compare function and _quicksort.
	* stdlib/qsort.c (_quicksort): Take additional parameter and pass on
	to the compare function.
	* stdlib/Versions [libc] (GLIBC_2.8): Add qsort_r.
	* Versions.def: Add GLIBC_2.8 for libc.
This commit is contained in:
Ulrich Drepper 2007-11-13 17:21:43 +00:00
parent bd63f380d8
commit e458144c99
7 changed files with 57 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
ChangeLog
View File

@ -1,5 +1,16 @@
2007-11-13 Ulrich Drepper <drepper@redhat.com>
* stdlib/stdlib.h: Define __compar_d_fn_t. Declare qsort_r.
* include/stdlib.h: Add hidden_proto for qsort_t and adjust protoype
for _quicksort.
* stdlib/msort.c (qsort): Now a wrapper around qsort_r.
(qsort_r): Renamed from qsort. Take additional parameter and pass it
on as third parameter to compare function and _quicksort.
* stdlib/qsort.c (_quicksort): Take additional parameter and pass on
to the compare function.
* stdlib/Versions [libc] (GLIBC_2.8): Add qsort_r.
* Versions.def: Add GLIBC_2.8 for libc.
* posix/tst-rfc3484.c: Adjust for addition of prefixlen field.
* posix/tst-rfc3484-2.c: Likewise.

1
Versions.def
View File

@ -24,6 +24,7 @@ libc {
GLIBC_2.5
GLIBC_2.6
GLIBC_2.7
GLIBC_2.8
%ifdef USE_IN_LIBIO
HURD_CTHREADS_0.3
%endif

3
include/stdlib.h
View File

@ -32,6 +32,7 @@ libc_hidden_proto (abort)
libc_hidden_proto (getenv)
libc_hidden_proto (bsearch)
libc_hidden_proto (qsort)
libc_hidden_proto (qsort_r)
libc_hidden_proto (lrand48_r)
libc_hidden_proto (wctomb)
libc_hidden_proto (__secure_getenv)
@ -83,7 +84,7 @@ extern int __add_to_environ (const char *name, const char *value,
const char *combines, int replace);
extern void _quicksort (void *const pbase, size_t total_elems,
size_t size, __compar_fn_t cmp);
size_t size, __compar_d_fn_t cmp, void *arg);
extern int __on_exit (void (*__func) (int __status, void *__arg), void *__arg);

3
stdlib/Versions
View File

@ -94,6 +94,9 @@ libc {
# Silent change in SUS.
realpath;
}
GLIBC_2.8 {
qsort_r;
}
GLIBC_PRIVATE {
# functions which have an additional interface since they are
# are cancelable.

36
stdlib/msort.c
View File

@ -30,7 +30,8 @@ struct msort_param
{
size_t s;
size_t var;
__compar_fn_t cmp;
__compar_d_fn_t cmp;
void *arg;
char *t;
};
static void msort_with_tmp (const struct msort_param *p, void *b, size_t n);
@ -54,13 +55,14 @@ msort_with_tmp (const struct msort_param *p, void *b, size_t n)
char *tmp = p->t;
const size_t s = p->s;
__compar_fn_t cmp = p->cmp;
__compar_d_fn_t cmp = p->cmp;
void *arg = p->arg;
switch (p->var)
{
case 0:
while (n1 > 0 && n2 > 0)
{
if ((*cmp) (b1, b2) <= 0)
if ((*cmp) (b1, b2, arg) <= 0)
{
*(uint32_t *) tmp = *(uint32_t *) b1;
b1 += sizeof (uint32_t);
@ -78,7 +80,7 @@ msort_with_tmp (const struct msort_param *p, void *b, size_t n)
case 1:
while (n1 > 0 && n2 > 0)
{
if ((*cmp) (b1, b2) <= 0)
if ((*cmp) (b1, b2, arg) <= 0)
{
*(uint64_t *) tmp = *(uint64_t *) b1;
b1 += sizeof (uint64_t);
@ -100,7 +102,7 @@ msort_with_tmp (const struct msort_param *p, void *b, size_t n)
unsigned long *bl;
tmp += s;
if ((*cmp) (b1, b2) <= 0)
if ((*cmp) (b1, b2, arg) <= 0)
{
bl = (unsigned long *) b1;
b1 += s;
@ -119,7 +121,7 @@ msort_with_tmp (const struct msort_param *p, void *b, size_t n)
case 3:
while (n1 > 0 && n2 > 0)
{
if ((*cmp) (*(const void **) b1, *(const void **) b2) <= 0)
if ((*cmp) (*(const void **) b1, *(const void **) b2, arg) <= 0)
{
*(void **) tmp = *(void **) b1;
b1 += sizeof (void *);
@ -137,7 +139,7 @@ msort_with_tmp (const struct msort_param *p, void *b, size_t n)
default:
while (n1 > 0 && n2 > 0)
{
if ((*cmp) (b1, b2) <= 0)
if ((*cmp) (b1, b2, arg) <= 0)
{
tmp = (char *) __mempcpy (tmp, b1, s);
b1 += s;
@ -158,8 +160,9 @@ msort_with_tmp (const struct msort_param *p, void *b, size_t n)
memcpy (b, p->t, (n - n2) * s);
}
void
qsort (void *b, size_t n, size_t s, __compar_fn_t cmp)
qsort_r (void *b, size_t n, size_t s, __compar_d_fn_t cmp, void *arg)
{
size_t size = n * s;
char *tmp = NULL;
@ -207,7 +210,7 @@ qsort (void *b, size_t n, size_t s, __compar_fn_t cmp)
/* If the memory requirements are too high don't allocate memory. */
if (size / pagesize > (size_t) phys_pages)
{
_quicksort (b, n, s, cmp);
_quicksort (b, n, s, cmp, arg);
return;
}
@ -219,15 +222,16 @@ qsort (void *b, size_t n, size_t s, __compar_fn_t cmp)
{
/* Couldn't get space, so use the slower algorithm
that doesn't need a temporary array. */
_quicksort (b, n, s, cmp);
_quicksort (b, n, s, cmp, arg);
return;
}
p.t = tmp;
}
p.s = s;
p.cmp = cmp;
p.var = 4;
p.cmp = cmp;
p.arg = arg;
if (s > 32)
{
@ -269,7 +273,7 @@ qsort (void *b, size_t n, size_t s, __compar_fn_t cmp)
while (kp != ip);
tp[j] = jp;
memcpy (jp, tmp_storage, s);
memcpy (jp, tmp_storage, s);
}
}
else
@ -291,4 +295,12 @@ qsort (void *b, size_t n, size_t s, __compar_fn_t cmp)
}
free (tmp);
}
libc_hidden_def (qsort_r)
void
qsort (void *b, size_t n, size_t s, __compar_fn_t cmp)
{
return qsort_r (b, n, s, (__compar_d_fn_t) cmp, NULL);
}
libc_hidden_def (qsort)

16
stdlib/qsort.c
View File

@ -88,7 +88,7 @@ typedef struct
void
_quicksort (void *const pbase, size_t total_elems, size_t size,
__compar_fn_t cmp)
__compar_d_fn_t cmp, void *arg)
{
register char *base_ptr = (char *) pbase;
@ -120,13 +120,13 @@ _quicksort (void *const pbase, size_t total_elems, size_t size,
char *mid = lo + size * ((hi - lo) / size >> 1);
if ((*cmp) ((void *) mid, (void *) lo) < 0)
if ((*cmp) ((void *) mid, (void *) lo, arg) < 0)
SWAP (mid, lo, size);
if ((*cmp) ((void *) hi, (void *) mid) < 0)
if ((*cmp) ((void *) hi, (void *) mid, arg) < 0)
SWAP (mid, hi, size);
else
goto jump_over;
if ((*cmp) ((void *) mid, (void *) lo) < 0)
if ((*cmp) ((void *) mid, (void *) lo, arg) < 0)
SWAP (mid, lo, size);
jump_over:;
@ -138,10 +138,10 @@ _quicksort (void *const pbase, size_t total_elems, size_t size,
that this algorithm runs much faster than others. */
do
{
while ((*cmp) ((void *) left_ptr, (void *) mid) < 0)
while ((*cmp) ((void *) left_ptr, (void *) mid, arg) < 0)
left_ptr += size;
while ((*cmp) ((void *) mid, (void *) right_ptr) < 0)
while ((*cmp) ((void *) mid, (void *) right_ptr, arg) < 0)
right_ptr -= size;
if (left_ptr < right_ptr)
@ -214,7 +214,7 @@ _quicksort (void *const pbase, size_t total_elems, size_t size,
and the operation speeds up insertion sort's inner loop. */
for (run_ptr = tmp_ptr + size; run_ptr <= thresh; run_ptr += size)
if ((*cmp) ((void *) run_ptr, (void *) tmp_ptr) < 0)
if ((*cmp) ((void *) run_ptr, (void *) tmp_ptr, arg) < 0)
tmp_ptr = run_ptr;
if (tmp_ptr != base_ptr)
@ -226,7 +226,7 @@ _quicksort (void *const pbase, size_t total_elems, size_t size,
while ((run_ptr += size) <= end_ptr)
{
tmp_ptr = run_ptr - size;
while ((*cmp) ((void *) run_ptr, (void *) tmp_ptr) < 0)
while ((*cmp) ((void *) run_ptr, (void *) tmp_ptr, arg) < 0)
tmp_ptr -= size;
tmp_ptr += size;

8
stdlib/stdlib.h
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@ -673,6 +673,9 @@ typedef int (*__compar_fn_t) (__const void *, __const void *);
typedef __compar_fn_t comparison_fn_t;
# endif
#endif
#ifdef __USE_GNU
typedef int (*__compar_d_fn_t) (__const void *, __const void *, void *);
#endif
__BEGIN_NAMESPACE_STD
/* Do a binary search for KEY in BASE, which consists of NMEMB elements
@ -685,6 +688,11 @@ extern void *bsearch (__const void *__key, __const void *__base,
using COMPAR to perform the comparisons. */
extern void qsort (void *__base, size_t __nmemb, size_t __size,
__compar_fn_t __compar) __nonnull ((1, 4));
#ifdef __USE_GNU
extern void qsort_r (void *__base, size_t __nmemb, size_t __size,
__compar_d_fn_t __compar, void *__arg)
__nonnull ((1, 4));
#endif
/* Return the absolute value of X. */