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* bignum.c: move object allocation out of blocking_region.

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[ruby-dev:33139]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15322 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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mame 2008-01-29 12:58:24 +00:00
parent b9821b02a0
commit 67212c5ba4
2 changed files with 70 additions and 59 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Tue Jan 29 21:55:35 2008 Yusuke Endoh <mame@tsg.ne.jp>
* bignum.c: move object allocation out of blocking_region.
[ruby-dev:33139]
Tue Jan 29 20:37:36 2008 NARUSE, Yui <naruse@ruby-lang.org>
* enc/trans/make_transdb.rb: add for make transdb.h.

124
bignum.c
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@ -1449,7 +1449,7 @@ rb_big_stop(void *ptr)
}
struct big_mul_struct {
VALUE x, y, stop;
VALUE x, y, z, stop;
};
static VALUE
@ -1458,11 +1458,10 @@ bigmul1(void *ptr)
struct big_mul_struct *bms = (struct big_mul_struct*)ptr;
long i, j;
BDIGIT_DBL n = 0;
VALUE x = bms->x, y = bms->y, z;
VALUE x = bms->x, y = bms->y, z = bms->z;
BDIGIT *zds;
j = RBIGNUM_LEN(x) + RBIGNUM_LEN(y) + 1;
z = bignew(j, RBIGNUM_SIGN(x)==RBIGNUM_SIGN(y));
zds = BDIGITS(z);
while (j--) zds[j] = 0;
for (i = 0; i < RBIGNUM_LEN(x); i++) {
@ -1488,7 +1487,7 @@ static VALUE
rb_big_mul0(VALUE x, VALUE y)
{
struct big_mul_struct bms;
VALUE z;
volatile VALUE z;
switch (TYPE(y)) {
case T_FIXNUM:
@ -1507,6 +1506,7 @@ rb_big_mul0(VALUE x, VALUE y)
bms.x = x;
bms.y = y;
bms.z = bignew(RBIGNUM_LEN(x) + RBIGNUM_LEN(y) + 1, RBIGNUM_SIGN(x)==RBIGNUM_SIGN(y));
bms.stop = Qfalse;
if (RBIGNUM_LEN(x) + RBIGNUM_LEN(y) > 10000) {
@ -1533,20 +1533,64 @@ rb_big_mul(VALUE x, VALUE y)
}
struct big_div_struct {
VALUE x, y, *divp, *modp, stop;
long nx, ny;
BDIGIT *yds, *zds;
VALUE stop;
};
static VALUE
bigdivrem1(void *ptr)
{
struct big_div_struct *bds = (struct big_div_struct*)ptr;
VALUE x = bds->x, y = bds->y, *divp = bds->divp, *modp = bds->modp;
long nx = RBIGNUM_LEN(x), ny = RBIGNUM_LEN(y);
long nx = bds->nx, ny = bds->ny;
long i, j;
VALUE yy, z;
BDIGIT *xds, *yds, *zds, *tds;
BDIGIT *yds = bds->yds, *zds = bds->zds;
BDIGIT_DBL t2;
BDIGIT_DBL_SIGNED num;
BDIGIT q;
j = nx==ny?nx+1:nx;
do {
if (bds->stop) return Qnil;
if (zds[j] == yds[ny-1]) q = BIGRAD-1;
else q = (BDIGIT)((BIGUP(zds[j]) + zds[j-1])/yds[ny-1]);
if (q) {
i = 0; num = 0; t2 = 0;
do { /* multiply and subtract */
BDIGIT_DBL ee;
t2 += (BDIGIT_DBL)yds[i] * q;
ee = num - BIGLO(t2);
num = (BDIGIT_DBL)zds[j - ny + i] + ee;
if (ee) zds[j - ny + i] = BIGLO(num);
num = BIGDN(num);
t2 = BIGDN(t2);
} while (++i < ny);
num += zds[j - ny + i] - t2;/* borrow from high digit; don't update */
while (num) { /* "add back" required */
i = 0; num = 0; q--;
do {
BDIGIT_DBL ee = num + yds[i];
num = (BDIGIT_DBL)zds[j - ny + i] + ee;
if (ee) zds[j - ny + i] = BIGLO(num);
num = BIGDN(num);
} while (++i < ny);
num--;
}
}
zds[j] = q;
} while (--j >= ny);
return Qnil;
}
static VALUE
bigdivrem(VALUE x, VALUE y, VALUE *divp, VALUE *modp)
{
struct big_div_struct bds;
long nx = RBIGNUM_LEN(x), ny = RBIGNUM_LEN(y);
long i, j;
volatile VALUE yy, z;
BDIGIT *xds, *yds, *zds, *tds;
BDIGIT_DBL t2;
BDIGIT dd, q;
if (BIGZEROP(y)) rb_num_zerodiv();
@ -1612,36 +1656,18 @@ bigdivrem1(void *ptr)
while (j--) zds[j] = xds[j];
}
j = nx==ny?nx+1:nx;
do {
if (bds->stop) return Qnil;
if (zds[j] == yds[ny-1]) q = BIGRAD-1;
else q = (BDIGIT)((BIGUP(zds[j]) + zds[j-1])/yds[ny-1]);
if (q) {
i = 0; num = 0; t2 = 0;
do { /* multiply and subtract */
BDIGIT_DBL ee;
t2 += (BDIGIT_DBL)yds[i] * q;
ee = num - BIGLO(t2);
num = (BDIGIT_DBL)zds[j - ny + i] + ee;
if (ee) zds[j - ny + i] = BIGLO(num);
num = BIGDN(num);
t2 = BIGDN(t2);
} while (++i < ny);
num += zds[j - ny + i] - t2;/* borrow from high digit; don't update */
while (num) { /* "add back" required */
i = 0; num = 0; q--;
do {
BDIGIT_DBL ee = num + yds[i];
num = (BDIGIT_DBL)zds[j - ny + i] + ee;
if (ee) zds[j - ny + i] = BIGLO(num);
num = BIGDN(num);
} while (++i < ny);
num--;
}
}
zds[j] = q;
} while (--j >= ny);
bds.nx = nx;
bds.ny = ny;
bds.zds = zds;
bds.yds = yds;
bds.stop = Qfalse;
if (RBIGNUM_LEN(x) > 10000 || RBIGNUM_LEN(y) > 10000) {
rb_thread_blocking_region(bigdivrem1, &bds, rb_big_stop, &bds.stop);
}
else {
bigdivrem1(&bds);
}
if (divp) { /* move quotient down in z */
*divp = rb_big_clone(z);
zds = BDIGITS(*divp);
@ -1665,26 +1691,6 @@ bigdivrem1(void *ptr)
RBIGNUM_SET_LEN(*modp, ny);
RBIGNUM_SET_SIGN(*modp, RBIGNUM_SIGN(x));
}
return Qnil;
}
static VALUE
bigdivrem(VALUE x, VALUE y, VALUE *divp, VALUE *modp)
{
struct big_div_struct bds;
VALUE z;
bds.x = x;
bds.y = y;
bds.divp = divp;
bds.modp = modp;
bds.stop = Qfalse;
if (RBIGNUM_LEN(x) > 10000 || RBIGNUM_LEN(y) > 10000) {
z = rb_thread_blocking_region(bigdivrem1, &bds, rb_big_stop, &bds.stop);
}
else {
z = bigdivrem1(&bds);
}
return z;
}