1 |
=head1 NAME |
2 |
|
3 |
Faster - do some things faster |
4 |
|
5 |
=head1 SYNOPSIS |
6 |
|
7 |
use Faster; |
8 |
|
9 |
=head1 DESCRIPTION |
10 |
|
11 |
=over 4 |
12 |
|
13 |
=cut |
14 |
|
15 |
package Faster; |
16 |
|
17 |
use strict; |
18 |
use Config; |
19 |
use B (); |
20 |
use Digest::MD5 (); |
21 |
use DynaLoader (); |
22 |
|
23 |
BEGIN { |
24 |
our $VERSION = '0.01'; |
25 |
|
26 |
require XSLoader; |
27 |
XSLoader::load __PACKAGE__, $VERSION; |
28 |
} |
29 |
|
30 |
my $COMPILE = "$Config{cc} -c -I$Config{archlibexp}/CORE $Config{optimize} $Config{ccflags} $Config{cccdlflags}"; |
31 |
my $LINK = "$Config{ld} $Config{ldflags} $Config{lddlflags} $Config{ccdlflags}"; |
32 |
my $LIBS = "$Config{libs}"; |
33 |
my $_o = $Config{_o}; |
34 |
my $_so = ".so"; |
35 |
|
36 |
our $source; |
37 |
our $label_next; |
38 |
our $label_last; |
39 |
our $label_redo; |
40 |
|
41 |
my @ops; |
42 |
my $op; |
43 |
my $op_name; |
44 |
|
45 |
my %flag; |
46 |
|
47 |
for (split /\n/, <<EOF) { |
48 |
leavesub unsafe |
49 |
leavesublv unsafe |
50 |
return unsafe |
51 |
flip unsafe |
52 |
goto unsafe |
53 |
last unsafe |
54 |
redo unsafe |
55 |
next unsafe |
56 |
eval unsafe |
57 |
leaveeval unsafe |
58 |
entertry unsafe |
59 |
substconst unsafe |
60 |
formline unsafe |
61 |
grepstart unsafe |
62 |
require unsafe |
63 |
match unsafe noasync todo |
64 |
subst unsafe noasync todo |
65 |
entereval unsafe noasync todo |
66 |
mapstart unsafe noasync todo |
67 |
|
68 |
mapwhile noasync |
69 |
grepwhile noasync |
70 |
|
71 |
seq noasync |
72 |
pushmark noasync |
73 |
padsv noasync extend=1 |
74 |
padav noasync extend=1 |
75 |
padhv noasync extend=1 |
76 |
padany noasync extend=1 |
77 |
entersub noasync |
78 |
aassign noasync |
79 |
sassign noasync |
80 |
rv2av noasync |
81 |
rv2cv noasync |
82 |
rv2gv noasync |
83 |
rv2hv noasync |
84 |
refgen noasync |
85 |
nextstate noasync |
86 |
gv noasync |
87 |
gvsv noasync |
88 |
add noasync |
89 |
subtract noasync |
90 |
multiply noasync |
91 |
divide noasync |
92 |
complement noasync |
93 |
cond_expr noasync |
94 |
and noasync |
95 |
or noasync |
96 |
not noasync |
97 |
defined noasync |
98 |
method_named noasync |
99 |
preinc noasync |
100 |
postinc noasync |
101 |
predec noasync |
102 |
postdec noasync |
103 |
stub noasync |
104 |
unstack noasync |
105 |
leaveloop noasync |
106 |
aelem noasync |
107 |
aelemfast noasync |
108 |
helem noasync |
109 |
pushre noasync |
110 |
const noasync extend=1 |
111 |
list noasync |
112 |
join noasync |
113 |
split noasync |
114 |
concat noasync |
115 |
push noasync |
116 |
pop noasync |
117 |
shift noasync |
118 |
unshift noasync |
119 |
require noasync |
120 |
length noasync |
121 |
substr noasync |
122 |
stringify noasync |
123 |
eq noasync |
124 |
ne noasync |
125 |
gt noasync |
126 |
lt noasync |
127 |
ge noasync |
128 |
le noasync |
129 |
enteriter noasync |
130 |
|
131 |
iter async |
132 |
EOF |
133 |
my (undef, $op, @flags) = split /\s+/; |
134 |
|
135 |
undef $flag{$_}{$op} |
136 |
for ("known", @flags); |
137 |
} |
138 |
|
139 |
sub callop { |
140 |
$op_name eq "entersub" |
141 |
? "(PL_ppaddr [OP_ENTERSUB]) (aTHX)" |
142 |
: $op_name eq "mapstart" |
143 |
? "Perl_pp_grepstart (aTHX)" |
144 |
: "Perl_pp_$op_name (aTHX)" |
145 |
} |
146 |
|
147 |
sub out_gotonext { |
148 |
if (${$op->next}) { |
149 |
$source .= " assert ((\"$op_name\", nextop == (OP *)${$op->next}));\n"; |
150 |
$source .= " goto op_${$op->next};\n"; |
151 |
} else { |
152 |
$source .= " return 0;\n"; |
153 |
} |
154 |
} |
155 |
|
156 |
sub out_next { |
157 |
$source .= " nextop = (OP *)${$op->next}L;\n"; |
158 |
|
159 |
out_gotonext; |
160 |
} |
161 |
|
162 |
sub out_linear { |
163 |
$source .= " assert ((\"$op_name\", nextop == (OP *)$$op));\n";#d# |
164 |
$source .= " PL_op = nextop; nextop = " . (callop $op) . ";\n"; |
165 |
if ($op_name eq "entersub") { |
166 |
$source .= <<EOF; |
167 |
while (nextop != (OP *)${$op->next}L) |
168 |
{ |
169 |
PERL_ASYNC_CHECK (); |
170 |
PL_op = nextop; nextop = (PL_op->op_ppaddr)(aTHX); |
171 |
} |
172 |
EOF |
173 |
} |
174 |
|
175 |
out_gotonext; |
176 |
} |
177 |
|
178 |
sub op_nextstate { |
179 |
$source .= " PL_curcop = (COP *)nextop;\n"; |
180 |
$source .= " PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;\n"; |
181 |
$source .= " FREETMPS;\n"; |
182 |
|
183 |
out_next; |
184 |
} |
185 |
|
186 |
sub op_pushmark { |
187 |
$source .= " PUSHMARK (PL_stack_sp);\n"; |
188 |
|
189 |
out_next; |
190 |
} |
191 |
|
192 |
if ($Config{useithreads} ne "define") { |
193 |
# disable optimisations on ithreads |
194 |
|
195 |
*op_const = sub { |
196 |
$source .= " { dSP; XPUSHs ((SV *)${$op->sv}L); PUTBACK; }\n"; |
197 |
|
198 |
out_next; |
199 |
}; |
200 |
|
201 |
*op_gv = \&op_const; |
202 |
|
203 |
*op_aelemfast = sub { |
204 |
my $targ = $op->targ; |
205 |
my $private = $op->private; |
206 |
|
207 |
$source .= " {\n"; |
208 |
|
209 |
if ($op->flags & B::OPf_SPECIAL) { |
210 |
$source .= " AV *av = (AV*)PAD_SV((PADOFFSET)$targ);\n"; |
211 |
} else { |
212 |
$source .= " AV *av = GvAV ((GV *)${$op->sv}L);\n"; |
213 |
} |
214 |
|
215 |
if ($op->flags & B::OPf_MOD) { |
216 |
$source .= " SV *sv = *av_fetch (av, $private, 1);\n"; |
217 |
} else { |
218 |
$source .= " SV **svp = av_fetch (av, $private, 0); SV *sv = svp ? *svp : &PL_sv_undef;\n"; |
219 |
} |
220 |
|
221 |
if (!($op->flags & B::OPf_MOD)) { |
222 |
$source .= " if (SvGMAGICAL (sv)) sv = sv_mortalcopy (sv);\n"; |
223 |
} |
224 |
|
225 |
$source .= " dSP;\n"; |
226 |
$source .= " XPUSHs (sv);\n"; |
227 |
$source .= " PUTBACK;\n"; |
228 |
$source .= " }\n"; |
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|
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out_next; |
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}; |
232 |
|
233 |
*op_gvsv = sub { |
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$source .= " {\n"; |
235 |
$source .= " dSP;\n"; |
236 |
$source .= " EXTEND (SP, 1);\n"; |
237 |
|
238 |
if ($op->private & B::OPpLVAL_INTRO) { |
239 |
$source .= " PUSHs (save_scalar ((GV *)${$op->sv}L));\n"; |
240 |
} else { |
241 |
$source .= " PUSHs (GvSV ((GV *)${$op->sv}L));\n"; |
242 |
} |
243 |
|
244 |
$source .= " PUTBACK;\n"; |
245 |
$source .= " }\n"; |
246 |
|
247 |
out_next; |
248 |
}; |
249 |
} |
250 |
|
251 |
sub op_stringify { |
252 |
$source .= " { dSP; dTARGET; sv_copypv (TARG, TOPs); SETTARG; }\n"; |
253 |
|
254 |
out_next; |
255 |
} |
256 |
|
257 |
sub op_and { |
258 |
$source .= <<EOF; |
259 |
{ |
260 |
dSP; |
261 |
|
262 |
if (SvTRUE (TOPs)) |
263 |
{ |
264 |
--SP; |
265 |
PUTBACK; |
266 |
nextop = (OP *)${$op->other}L; |
267 |
goto op_${$op->other}; |
268 |
} |
269 |
} |
270 |
EOF |
271 |
|
272 |
out_next; |
273 |
} |
274 |
|
275 |
sub op_or { |
276 |
$source .= <<EOF; |
277 |
{ |
278 |
dSP; |
279 |
|
280 |
if (!SvTRUE (TOPs)) |
281 |
{ |
282 |
--SP; |
283 |
PUTBACK; |
284 |
nextop = (OP *)${$op->other}L; |
285 |
goto op_${$op->other}; |
286 |
} |
287 |
} |
288 |
EOF |
289 |
|
290 |
out_next; |
291 |
} |
292 |
|
293 |
sub op_padsv { |
294 |
my $flags = $op->flags; |
295 |
my $target = $op->targ; |
296 |
|
297 |
$source .= <<EOF; |
298 |
{ |
299 |
dSP; |
300 |
XPUSHs (PAD_SV ((PADOFFSET)$target)); |
301 |
PUTBACK; |
302 |
EOF |
303 |
if ($op->flags & B::OPf_MOD) { |
304 |
if ($op->private & B::OPpLVAL_INTRO) { |
305 |
$source .= " SAVECLEARSV (PAD_SVl ((PADOFFSET)$target));\n"; |
306 |
} elsif ($op->private & B::OPpDEREF) { |
307 |
my $deref = $op->private & B::OPpDEREF; |
308 |
$source .= " Perl_vivify_ref (PAD_SVl ((PADOFFSET)$target), $deref);\n"; |
309 |
} |
310 |
} |
311 |
$source .= <<EOF; |
312 |
} |
313 |
EOF |
314 |
|
315 |
out_next; |
316 |
} |
317 |
|
318 |
# pattern const+ (or general push1) |
319 |
# pattern pushmark return(?) |
320 |
# pattern pushmark gv rv2av pushmark padsv+o.รค. aassign |
321 |
|
322 |
# pattern const method_named |
323 |
sub op_method_named { |
324 |
$source .= <<EOF; |
325 |
{ |
326 |
static HV *last_stash; |
327 |
static SV *last_res; |
328 |
|
329 |
SV *obj = *(PL_stack_base + TOPMARK + 1); |
330 |
|
331 |
if (SvROK (obj) && SvOBJECT (SvRV (obj))) |
332 |
{ |
333 |
dSP; |
334 |
HV *stash = SvSTASH (SvRV (obj)); |
335 |
|
336 |
/* simple "polymorphic" inline cache */ |
337 |
if (stash == last_stash) |
338 |
{ |
339 |
XPUSHs (last_res); |
340 |
PUTBACK; |
341 |
} |
342 |
else |
343 |
{ |
344 |
PL_op = nextop; |
345 |
nextop = Perl_pp_method_named (aTHX); |
346 |
|
347 |
SPAGAIN; |
348 |
last_stash = stash; |
349 |
last_res = TOPs; |
350 |
} |
351 |
} |
352 |
else |
353 |
{ |
354 |
/* error case usually */ |
355 |
PL_op = nextop; |
356 |
nextop = Perl_pp_method_named (aTHX); |
357 |
} |
358 |
} |
359 |
EOF |
360 |
|
361 |
out_next; |
362 |
} |
363 |
|
364 |
sub cv2c { |
365 |
my ($cv) = @_; |
366 |
|
367 |
my %opsseen; |
368 |
my @todo = $cv->START; |
369 |
|
370 |
while (my $op = shift @todo) { |
371 |
for (; $$op; $op = $op->next) { |
372 |
last if $opsseen{$$op}++; |
373 |
push @ops, $op; |
374 |
my $name = $op->name; |
375 |
if (B::class($op) eq "LOGOP") { |
376 |
push @todo, $op->other; |
377 |
} elsif ($name eq "subst" and ${ $op->pmreplstart }) { |
378 |
push @todo, $op->pmreplstart; |
379 |
} elsif ($name =~ /^enter(loop|iter)$/) { |
380 |
# if ($] > 5.009) { |
381 |
# $labels{${$op->nextop}} = "NEXT"; |
382 |
# $labels{${$op->lastop}} = "LAST"; |
383 |
# $labels{${$op->redoop}} = "REDO"; |
384 |
# } else { |
385 |
# $labels{$op->nextop->seq} = "NEXT"; |
386 |
# $labels{$op->lastop->seq} = "LAST"; |
387 |
# $labels{$op->redoop->seq} = "REDO"; |
388 |
# } |
389 |
} |
390 |
} |
391 |
} |
392 |
|
393 |
local $source = <<EOF; |
394 |
#define PERL_NO_GET_CONTEXT |
395 |
|
396 |
//#define NDEBUG 1 |
397 |
#include <assert.h> |
398 |
|
399 |
#include "EXTERN.h" |
400 |
#include "perl.h" |
401 |
#include "XSUB.h" |
402 |
|
403 |
OP *%%%FUNC%%% (pTHX) |
404 |
{ |
405 |
register OP *nextop = (OP *)${$ops[0]}L; |
406 |
EOF |
407 |
|
408 |
while (@ops) { |
409 |
$op = shift @ops; |
410 |
$op_name = $op->name; |
411 |
|
412 |
$source .= "op_$$op: /* $op_name */\n"; |
413 |
#$source .= "fprintf (stderr, \"$$op in op $op_name\\n\");\n";#d# |
414 |
#$source .= "{ dSP; sv_dump (TOPs); }\n";#d# |
415 |
|
416 |
unless (exists $flag{noasync}{$op_name}) { |
417 |
$source .= " PERL_ASYNC_CHECK ();\n"; |
418 |
} |
419 |
|
420 |
if (my $can = __PACKAGE__->can ("op_$op_name")) { |
421 |
$can->($op); |
422 |
} elsif (exists $flag{unsafe}{$op_name}) { |
423 |
$source .= " assert ((\"$op_name\", nextop == (OP *)$$op));\n"; |
424 |
$source .= " return nextop;\n"; |
425 |
} elsif ("LOGOP" eq B::class $op or exists $flag{otherop}{$op_name}) { |
426 |
$source .= " assert ((\"$op_name\", nextop == (OP *)$$op));\n"; |
427 |
$source .= " PL_op = nextop; nextop = " . (callop $op) . ";\n"; |
428 |
$source .= " if (nextop == (OP *)${$op->other}L) goto op_${$op->other};\n"; |
429 |
$source .= " assert ((\"$op_name\", nextop == (OP *)${$op->next}));\n"; |
430 |
$source .= ${$op->next} ? " goto op_${$op->next};\n" : " return 0;\n"; |
431 |
} else { |
432 |
out_linear; |
433 |
} |
434 |
} |
435 |
|
436 |
$source .= "}\n"; |
437 |
#warn $source; |
438 |
|
439 |
$source |
440 |
} |
441 |
|
442 |
sub source2ptr { |
443 |
my ($source) = @_; |
444 |
|
445 |
my $md5 = Digest::MD5::md5_hex $source; |
446 |
$source =~ s/%%%FUNC%%%/Faster_$md5/; |
447 |
|
448 |
my $stem = "/tmp/$md5"; |
449 |
|
450 |
unless (-e "$stem$_so") { |
451 |
open FILE, ">:raw", "$stem.c"; |
452 |
print FILE $source; |
453 |
close FILE; |
454 |
system "$COMPILE -o $stem$_o $stem.c"; |
455 |
system "$LINK -o $stem$_so $stem$_o $LIBS"; |
456 |
} |
457 |
|
458 |
# warn $source; |
459 |
my $so = DynaLoader::dl_load_file "$stem$_so" |
460 |
or die "$stem$_so: $!"; |
461 |
|
462 |
DynaLoader::dl_find_symbol $so, "Faster_$md5" |
463 |
or die "Faster_$md5: $!" |
464 |
} |
465 |
|
466 |
sub entersub { |
467 |
my ($cv) = @_; |
468 |
|
469 |
eval { |
470 |
my $source = cv2c $cv; |
471 |
|
472 |
my $ptr = source2ptr $source; |
473 |
|
474 |
patch_cv $cv, $ptr; |
475 |
}; |
476 |
|
477 |
warn $@ if $@; |
478 |
} |
479 |
|
480 |
hook_entersub; |
481 |
|
482 |
1; |
483 |
|
484 |
=back |
485 |
|
486 |
=head1 LIMITATIONS |
487 |
|
488 |
Tainting and debugging will disable Faster. |
489 |
|
490 |
=head1 AUTHOR |
491 |
|
492 |
Marc Lehmann <schmorp@schmorp.de> |
493 |
http://home.schmorp.de/ |
494 |
|
495 |
=cut |
496 |
|