| … | |
… | |
| 4 | |
4 | |
| 5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
| 6 | |
6 | |
| 7 | use Faster; |
7 | use Faster; |
| 8 | |
8 | |
|
|
9 | perl -MFaster ... |
|
|
10 | |
| 9 | =head1 DESCRIPTION |
11 | =head1 DESCRIPTION |
| 10 | |
12 | |
|
|
13 | This module implements a very simple-minded JIT. It works by more or less |
|
|
14 | translating every function it sees into a C program, compiling it and then |
|
|
15 | replacing the function by the compiled code. |
|
|
16 | |
|
|
17 | As a result, startup times are immense, as every function might lead to a |
|
|
18 | full-blown compilation. |
|
|
19 | |
|
|
20 | The speed improvements are also not great, you can expect 20% or so on |
|
|
21 | average, for code that runs very often. |
|
|
22 | |
|
|
23 | Faster is in the early stages of development. Due to its design its |
|
|
24 | relatively safe to use (it will either work or simply slowdown the program |
|
|
25 | immensely, but rarely cause bugs). |
|
|
26 | |
|
|
27 | Usage is very easy, just C<use Faster> and every function called from then |
|
|
28 | on will be compiled. |
|
|
29 | |
|
|
30 | Right now, Faster will leave lots of F<*.c>, F<*.o> and F<*.so> files in |
|
|
31 | your F<$FASTER_CACHEDIR> (by default F<$HOME/.perl-faster-cache>), and it |
|
|
32 | will even create those temporary files in an insecure manner, so watch |
|
|
33 | out. |
|
|
34 | |
| 11 | =over 4 |
35 | =over 4 |
| 12 | |
36 | |
| 13 | =cut |
37 | =cut |
| 14 | |
38 | |
| 15 | package Faster; |
39 | package Faster; |
| 16 | |
40 | |
|
|
41 | no warnings; |
|
|
42 | |
| 17 | use strict; |
43 | use strict; |
|
|
44 | use Config; |
|
|
45 | use B (); |
|
|
46 | use DynaLoader (); |
|
|
47 | use Digest::MD5 (); |
|
|
48 | use Storable (); |
|
|
49 | use Fcntl (); |
| 18 | |
50 | |
| 19 | BEGIN { |
51 | BEGIN { |
| 20 | our $VERSION = '0.01'; |
52 | our $VERSION = '0.01'; |
| 21 | |
53 | |
| 22 | require XSLoader; |
54 | require XSLoader; |
| 23 | XSLoader::load __PACKAGE__, $VERSION; |
55 | XSLoader::load __PACKAGE__, $VERSION; |
| 24 | } |
56 | } |
| 25 | |
57 | |
| 26 | use B (); |
58 | my $CACHEDIR = |
|
|
59 | $ENV{FASTER_CACHE} |
|
|
60 | || (exists $ENV{HOME} && "$ENV{HOME}/.perl-faster-cache") |
|
|
61 | || do { |
|
|
62 | require File::Temp; |
|
|
63 | File::Temp::tempdir (CLEANUP => 1) |
|
|
64 | }; |
|
|
65 | |
|
|
66 | my $COMPILE = "$Config{cc} -c -I$Config{archlibexp}/CORE $Config{optimize} $Config{ccflags} $Config{cccdlflags}"; |
|
|
67 | my $LINK = "$Config{ld} $Config{ldflags} $Config{lddlflags} $Config{ccdlflags}"; |
|
|
68 | my $LIBS = "$Config{libs}"; |
|
|
69 | my $_o = $Config{_o}; |
|
|
70 | my $_so = ".so"; |
|
|
71 | |
|
|
72 | # we don't need no steenking PIC on x86 |
|
|
73 | $COMPILE =~ s/-f(?:PIC|pic)//g |
|
|
74 | if $Config{archname} =~ /^(i[3456]86)-/; |
|
|
75 | |
|
|
76 | my $opt_assert = $ENV{FASTER_DEBUG}; |
|
|
77 | my $verbose = $ENV{FASTER_VERBOSE}+0; |
|
|
78 | |
|
|
79 | warn "Faster: CACHEDIR is $CACHEDIR\n" if $verbose > 2; |
| 27 | |
80 | |
| 28 | our $source; |
81 | our $source; |
| 29 | our $label_next; |
|
|
| 30 | our $label_last; |
|
|
| 31 | our $label_redo; |
|
|
| 32 | |
82 | |
| 33 | my %flag; |
83 | our @ops; |
|
|
84 | our $insn; |
|
|
85 | our $op; |
|
|
86 | our $op_name; |
|
|
87 | our @op_loop; |
|
|
88 | our %op_regcomp; |
| 34 | |
89 | |
| 35 | for (split /\n/, <<EOF) { |
90 | # ops that cause immediate return to the interpreter |
| 36 | leavesub unsafe |
91 | my %f_unsafe = map +($_ => undef), qw( |
| 37 | leavesublv unsafe |
92 | leavesub leavesublv return |
| 38 | return unsafe |
93 | goto last redo next |
| 39 | flip unsafe |
94 | eval flip leaveeval entertry |
| 40 | goto unsafe |
95 | formline grepstart mapstart |
| 41 | last unsafe |
96 | substcont entereval require |
| 42 | redo unsafe |
97 | ); |
| 43 | next unsafe |
|
|
| 44 | eval unsafe |
|
|
| 45 | leaveeval unsafe |
|
|
| 46 | entertry unsafe |
|
|
| 47 | substconst unsafe |
|
|
| 48 | formline unsafe |
|
|
| 49 | grepstart unsafe |
|
|
| 50 | EOF |
|
|
| 51 | my (undef, $op, @flags) = split /\s+/; |
|
|
| 52 | |
98 | |
| 53 | undef $flag{$_}{$op} |
99 | # ops with known stack extend behaviour |
| 54 | for ("known", @flags); |
100 | # the values given are maximum values |
|
|
101 | my %extend = ( |
|
|
102 | pushmark => 0, |
|
|
103 | nextstate => 0, # might reduce the stack |
|
|
104 | unstack => 0, |
|
|
105 | enter => 0, |
|
|
106 | |
|
|
107 | stringify => 0, |
|
|
108 | not => 0, |
|
|
109 | and => 0, |
|
|
110 | or => 0, |
|
|
111 | gvsv => 0, |
|
|
112 | rv2gv => 0, |
|
|
113 | preinc => 0, |
|
|
114 | predec => 0, |
|
|
115 | postinc => 0, |
|
|
116 | postdec => 0, |
|
|
117 | aelem => 0, |
|
|
118 | helem => 0, |
|
|
119 | qr => 1, #??? |
|
|
120 | pushre => 1, |
|
|
121 | gv => 1, |
|
|
122 | aelemfast => 1, |
|
|
123 | aelem => 0, |
|
|
124 | padsv => 1, |
|
|
125 | const => 1, |
|
|
126 | pop => 1, |
|
|
127 | shift => 1, |
|
|
128 | eq => -1, |
|
|
129 | ne => -1, |
|
|
130 | gt => -1, |
|
|
131 | lt => -1, |
|
|
132 | ge => -1, |
|
|
133 | lt => -1, |
|
|
134 | cond_expr => -1, |
|
|
135 | add => -1, |
|
|
136 | subtract => -1, |
|
|
137 | multiply => -1, |
|
|
138 | divide => -1, |
|
|
139 | aassign => 0, |
|
|
140 | sassign => -2, |
|
|
141 | method => 0, |
|
|
142 | method_named => 1, |
|
|
143 | ); |
|
|
144 | |
|
|
145 | # ops that do not need an ASYNC_CHECK |
|
|
146 | my %f_noasync = map +($_ => undef), qw( |
|
|
147 | mapstart grepstart match entereval |
|
|
148 | enteriter entersub leaveloop |
|
|
149 | |
|
|
150 | pushmark nextstate |
|
|
151 | |
|
|
152 | const stub unstack |
|
|
153 | last next redo seq |
|
|
154 | padsv padav padhv padany |
|
|
155 | aassign sassign orassign |
|
|
156 | rv2av rv2cv rv2gv rv2hv refgen |
|
|
157 | gv gvsv |
|
|
158 | add subtract multiply divide |
|
|
159 | complement cond_expr and or not |
|
|
160 | defined |
|
|
161 | method method_named bless |
|
|
162 | preinc postinc predec postdec |
|
|
163 | aelem aelemfast helem delete exists |
|
|
164 | pushre subst list join split concat |
|
|
165 | length substr stringify ord |
|
|
166 | push pop shift unshift |
|
|
167 | eq ne gt lt ge le |
|
|
168 | regcomp regcreset regcmaybe |
|
|
169 | ); |
|
|
170 | |
|
|
171 | my %callop = ( |
|
|
172 | entersub => "(PL_op->op_ppaddr) (aTHX)", |
|
|
173 | mapstart => "Perl_pp_grepstart (aTHX)", |
|
|
174 | ); |
|
|
175 | |
|
|
176 | sub callop { |
|
|
177 | $callop{$op_name} || "Perl_pp_$op_name (aTHX)" |
|
|
178 | } |
|
|
179 | |
|
|
180 | sub assert { |
|
|
181 | return unless $opt_assert; |
|
|
182 | $source .= " assert ((\"$op_name\", ($_[0])));\n"; |
|
|
183 | } |
|
|
184 | |
|
|
185 | sub out_callop { |
|
|
186 | assert "nextop == (OP *)$$op"; |
|
|
187 | $source .= " PL_op = nextop; nextop = " . (callop $op) . ";\n"; |
|
|
188 | } |
|
|
189 | |
|
|
190 | sub out_cond_jump { |
|
|
191 | $source .= " if (nextop == (OP *)${$_[0]}L) goto op_${$_[0]};\n"; |
|
|
192 | } |
|
|
193 | |
|
|
194 | sub out_jump_next { |
|
|
195 | out_cond_jump $op_regcomp{$$op} |
|
|
196 | if $op_regcomp{$$op}; |
|
|
197 | |
|
|
198 | assert "nextop == (OP *)${$op->next}"; |
|
|
199 | $source .= " goto op_${$op->next};\n"; |
| 55 | } |
200 | } |
| 56 | |
201 | |
| 57 | sub out_next { |
202 | sub out_next { |
| 58 | my ($op) = @_; |
|
|
| 59 | |
|
|
| 60 | my $ppaddr = ppaddr $op->type; |
|
|
| 61 | |
|
|
| 62 | $source .= " PL_op = (OP *)${$op->next}L;\n"; |
203 | $source .= " nextop = (OP *)${$op->next}L;\n"; |
| 63 | $source .= " goto op_${$op->next};\n"; |
204 | |
|
|
205 | out_jump_next; |
| 64 | } |
206 | } |
|
|
207 | |
|
|
208 | sub out_linear { |
|
|
209 | out_callop; |
|
|
210 | out_jump_next; |
|
|
211 | } |
|
|
212 | |
|
|
213 | sub op_entersub { |
|
|
214 | out_callop; |
|
|
215 | $source .= " RUNOPS_TILL ((OP *)${$op->next}L);\n"; |
|
|
216 | out_jump_next; |
|
|
217 | } |
|
|
218 | |
|
|
219 | *op_require = \&op_entersub; |
| 65 | |
220 | |
| 66 | sub op_nextstate { |
221 | sub op_nextstate { |
| 67 | my ($op) = @_; |
|
|
| 68 | |
|
|
| 69 | $source .= " PL_curcop = (COP *)PL_op;\n"; |
222 | $source .= " PL_curcop = (COP *)nextop;\n"; |
| 70 | $source .= " PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;\n"; |
223 | $source .= " PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;\n"; |
| 71 | $source .= " FREETMPS;\n"; |
224 | $source .= " FREETMPS;\n"; |
| 72 | |
225 | |
| 73 | out_next $op; |
226 | out_next; |
| 74 | } |
227 | } |
| 75 | |
228 | |
| 76 | sub op_const { |
229 | sub op_pushmark { |
| 77 | my ($op) = @_; |
230 | $source .= " PUSHMARK (PL_stack_sp);\n"; |
| 78 | |
231 | |
|
|
232 | out_next; |
|
|
233 | } |
|
|
234 | |
|
|
235 | if ($Config{useithreads} ne "define") { |
|
|
236 | # disable optimisations on ithreads |
|
|
237 | |
|
|
238 | *op_const = sub { |
| 79 | $source .= " { dSP; XPUSHs ((SV *)${$op->sv}L); PUTBACK; }\n"; |
239 | $source .= " { dSP; PUSHs ((SV *)${$op->sv}L); PUTBACK; }\n"; |
| 80 | |
240 | |
|
|
241 | $ops[0]{follows_const}++ if @ops;#d# |
|
|
242 | |
| 81 | out_next $op; |
243 | out_next; |
| 82 | } |
244 | }; |
| 83 | |
245 | |
| 84 | *op_gv = \&op_const; |
246 | *op_gv = \&op_const; |
| 85 | |
247 | |
| 86 | sub entersub { |
248 | *op_aelemfast = sub { |
|
|
249 | my $targ = $op->targ; |
|
|
250 | my $private = $op->private; |
|
|
251 | |
|
|
252 | $source .= " {\n"; |
|
|
253 | |
|
|
254 | if ($op->flags & B::OPf_SPECIAL) { |
|
|
255 | $source .= " AV *av = (AV*)PAD_SV((PADOFFSET)$targ);\n"; |
|
|
256 | } else { |
|
|
257 | $source .= " AV *av = GvAV ((GV *)${$op->sv}L);\n"; |
|
|
258 | } |
|
|
259 | |
|
|
260 | if ($op->flags & B::OPf_MOD) { |
|
|
261 | $source .= " SV *sv = *av_fetch (av, $private, 1);\n"; |
|
|
262 | } else { |
|
|
263 | $source .= " SV **svp = av_fetch (av, $private, 0); SV *sv = svp ? *svp : &PL_sv_undef;\n"; |
|
|
264 | } |
|
|
265 | |
|
|
266 | if (!($op->flags & B::OPf_MOD)) { |
|
|
267 | $source .= " if (SvGMAGICAL (sv)) sv = sv_mortalcopy (sv);\n"; |
|
|
268 | } |
|
|
269 | |
|
|
270 | $source .= " dSP;\n"; |
|
|
271 | $source .= " PUSHs (sv);\n"; |
|
|
272 | $source .= " PUTBACK;\n"; |
|
|
273 | $source .= " }\n"; |
|
|
274 | |
|
|
275 | out_next; |
|
|
276 | }; |
|
|
277 | |
|
|
278 | *op_gvsv = sub { |
|
|
279 | $source .= " {\n"; |
|
|
280 | $source .= " dSP;\n"; |
|
|
281 | |
|
|
282 | if ($op->private & B::OPpLVAL_INTRO) { |
|
|
283 | $source .= " PUSHs (save_scalar ((GV *)${$op->sv}L));\n"; |
|
|
284 | } else { |
|
|
285 | $source .= " PUSHs (GvSV ((GV *)${$op->sv}L));\n"; |
|
|
286 | } |
|
|
287 | |
|
|
288 | $source .= " PUTBACK;\n"; |
|
|
289 | $source .= " }\n"; |
|
|
290 | |
|
|
291 | out_next; |
|
|
292 | }; |
|
|
293 | } |
|
|
294 | |
|
|
295 | # does kill Crossfire/res2pm |
|
|
296 | sub op_stringify { |
|
|
297 | my $targ = $op->targ; |
|
|
298 | |
|
|
299 | $source .= <<EOF; |
|
|
300 | { |
|
|
301 | dSP; |
|
|
302 | SV *targ = PAD_SV ((PADOFFSET)$targ); |
|
|
303 | sv_copypv (TARG, TOPs); |
|
|
304 | SETTARG; |
|
|
305 | PUTBACK; |
|
|
306 | } |
|
|
307 | EOF |
|
|
308 | |
|
|
309 | out_next; |
|
|
310 | } |
|
|
311 | |
|
|
312 | sub op_and { |
|
|
313 | $source .= <<EOF; |
|
|
314 | { |
|
|
315 | dSP; |
|
|
316 | |
|
|
317 | if (SvTRUE (TOPs)) |
|
|
318 | { |
|
|
319 | --SP; |
|
|
320 | PUTBACK; |
|
|
321 | nextop = (OP *)${$op->other}L; |
|
|
322 | goto op_${$op->other}; |
|
|
323 | } |
|
|
324 | } |
|
|
325 | EOF |
|
|
326 | |
|
|
327 | out_next; |
|
|
328 | } |
|
|
329 | |
|
|
330 | sub op_or { |
|
|
331 | $source .= <<EOF; |
|
|
332 | { |
|
|
333 | dSP; |
|
|
334 | |
|
|
335 | if (!SvTRUE (TOPs)) |
|
|
336 | { |
|
|
337 | --SP; |
|
|
338 | PUTBACK; |
|
|
339 | nextop = (OP *)${$op->other}L; |
|
|
340 | goto op_${$op->other}; |
|
|
341 | } |
|
|
342 | } |
|
|
343 | EOF |
|
|
344 | |
|
|
345 | out_next; |
|
|
346 | } |
|
|
347 | |
|
|
348 | sub op_padsv { |
|
|
349 | my $flags = $op->flags; |
|
|
350 | my $padofs = "(PADOFFSET)" . $op->targ; |
|
|
351 | |
|
|
352 | $source .= <<EOF; |
|
|
353 | { |
|
|
354 | dSP; |
|
|
355 | SV *sv = PAD_SVl ($padofs); |
|
|
356 | EOF |
|
|
357 | |
|
|
358 | if (($flags & B::OPf_MOD) && ($op->private & B::OPpLVAL_INTRO)) { |
|
|
359 | $source .= " SAVECLEARSV (PAD_SVl ($padofs));\n"; |
|
|
360 | $ops[0]{follows_padsv_lval_intro}++ if @ops;#d# |
|
|
361 | } |
|
|
362 | |
|
|
363 | $source .= <<EOF; |
|
|
364 | PUSHs (sv); |
|
|
365 | PUTBACK; |
|
|
366 | EOF |
|
|
367 | |
|
|
368 | if (($flags & B::OPf_MOD) && ($op->private & B::OPpDEREF)) { |
|
|
369 | $source .= " if (!SvROK (sv)) vivify_ref (sv, " . $op->private . " & OPpDEREF);\n"; |
|
|
370 | } |
|
|
371 | $source .= " }\n"; |
|
|
372 | |
|
|
373 | out_next; |
|
|
374 | } |
|
|
375 | |
|
|
376 | sub op_sassign { |
|
|
377 | $source .= <<EOF; |
|
|
378 | { |
|
|
379 | dSP; |
|
|
380 | dPOPTOPssrl; |
|
|
381 | EOF |
|
|
382 | $source .= " SV *temp = left; left = right; right = temp;\n" |
|
|
383 | if $op->private & B::OPpASSIGN_BACKWARDS; |
|
|
384 | |
|
|
385 | if ($insn->{follows_padsv_lval_intro} && !($op->private & B::OPpASSIGN_BACKWARDS)) { |
|
|
386 | # simple assignment - the target exists, but is basically undef |
|
|
387 | $source .= " SvSetSV (right, left);\n"; |
|
|
388 | } else { |
|
|
389 | $source .= " SvSetMagicSV (right, left);\n"; |
|
|
390 | } |
|
|
391 | |
|
|
392 | $source .= <<EOF; |
|
|
393 | SETs (right); |
|
|
394 | PUTBACK; |
|
|
395 | } |
|
|
396 | EOF |
|
|
397 | |
|
|
398 | out_next; |
|
|
399 | } |
|
|
400 | |
|
|
401 | # pattern const+ (or general push1) |
|
|
402 | # pattern pushmark gv rv2av pushmark padsv+o.รค. aassign |
|
|
403 | |
|
|
404 | sub op_method_named { |
|
|
405 | if ($insn->{follows_const}) { |
|
|
406 | $source .= <<EOF; |
|
|
407 | { |
|
|
408 | dSP; |
|
|
409 | static SV *last_cv; |
|
|
410 | static U32 last_sub_generation; |
|
|
411 | |
|
|
412 | /* simple "polymorphic" inline cache */ |
|
|
413 | if (PL_sub_generation == last_sub_generation) |
|
|
414 | { |
|
|
415 | PUSHs (last_cv); |
|
|
416 | PUTBACK; |
|
|
417 | } |
|
|
418 | else |
|
|
419 | { |
|
|
420 | PL_op = nextop; nextop = Perl_pp_method_named (aTHX); |
|
|
421 | |
|
|
422 | SPAGAIN; |
|
|
423 | last_sub_generation = PL_sub_generation; |
|
|
424 | last_cv = TOPs; |
|
|
425 | } |
|
|
426 | } |
|
|
427 | EOF |
|
|
428 | } else { |
|
|
429 | $source .= <<EOF; |
|
|
430 | { |
|
|
431 | static HV *last_stash; |
|
|
432 | static SV *last_cv; |
|
|
433 | static U32 last_sub_generation; |
|
|
434 | |
|
|
435 | SV *obj = *(PL_stack_base + TOPMARK + 1); |
|
|
436 | |
|
|
437 | if (!SvGMAGICAL (obj) && SvROK (obj) && SvOBJECT (SvRV (obj))) |
|
|
438 | { |
|
|
439 | dSP; |
|
|
440 | HV *stash = SvSTASH (SvRV (obj)); |
|
|
441 | |
|
|
442 | /* simple "polymorphic" inline cache */ |
|
|
443 | if (stash == last_stash |
|
|
444 | && PL_sub_generation == last_sub_generation) |
|
|
445 | { |
|
|
446 | PUSHs (last_cv); |
|
|
447 | PUTBACK; |
|
|
448 | } |
|
|
449 | else |
|
|
450 | { |
|
|
451 | PL_op = nextop; nextop = Perl_pp_method_named (aTHX); |
|
|
452 | |
|
|
453 | SPAGAIN; |
|
|
454 | last_sub_generation = PL_sub_generation; |
|
|
455 | last_stash = stash; |
|
|
456 | last_cv = TOPs; |
|
|
457 | } |
|
|
458 | } |
|
|
459 | else |
|
|
460 | { |
|
|
461 | /* error case usually */ |
|
|
462 | PL_op = nextop; nextop = Perl_pp_method_named (aTHX); |
|
|
463 | } |
|
|
464 | } |
|
|
465 | EOF |
|
|
466 | } |
|
|
467 | |
|
|
468 | out_next; |
|
|
469 | } |
|
|
470 | |
|
|
471 | sub op_grepstart { |
|
|
472 | out_callop; |
|
|
473 | $op = $op->next; |
|
|
474 | out_cond_jump $op->other; |
|
|
475 | out_jump_next; |
|
|
476 | } |
|
|
477 | |
|
|
478 | *op_mapstart = \&op_grepstart; |
|
|
479 | |
|
|
480 | sub op_substcont { |
|
|
481 | out_callop; |
|
|
482 | out_cond_jump $op->other->pmreplstart; |
|
|
483 | assert "nextop == (OP *)${$op->other->next}L"; |
|
|
484 | $source .= " goto op_${$op->other->next};\n"; |
|
|
485 | } |
|
|
486 | |
|
|
487 | sub out_break_op { |
|
|
488 | my ($idx) = @_; |
|
|
489 | |
|
|
490 | out_callop; |
|
|
491 | |
|
|
492 | out_cond_jump $_->[$idx] |
|
|
493 | for reverse @op_loop; |
|
|
494 | |
|
|
495 | $source .= " return nextop;\n"; |
|
|
496 | } |
|
|
497 | |
|
|
498 | sub xop_next { |
|
|
499 | out_break_op 0; |
|
|
500 | } |
|
|
501 | |
|
|
502 | sub op_last { |
|
|
503 | out_break_op 1; |
|
|
504 | } |
|
|
505 | |
|
|
506 | sub xop_redo { |
|
|
507 | out_break_op 2; |
|
|
508 | } |
|
|
509 | |
|
|
510 | sub cv2c { |
| 87 | my ($cv) = @_; |
511 | my ($cv) = @_; |
| 88 | |
512 | |
|
|
513 | local @ops; |
|
|
514 | local @op_loop; |
|
|
515 | local %op_regcomp; |
|
|
516 | |
| 89 | my %opsseen; |
517 | my %opsseen; |
| 90 | my @ops; |
|
|
| 91 | my @todo = $cv->START; |
518 | my @todo = $cv->START; |
|
|
519 | my %op_target; |
| 92 | |
520 | |
| 93 | while (my $op = shift @todo) { |
521 | while (my $op = shift @todo) { |
| 94 | for (; $$op; $op = $op->next) { |
522 | for (; $$op; $op = $op->next) { |
| 95 | last if $opsseen{$$op}++; |
523 | last if $opsseen{$$op}++; |
| 96 | push @ops, $op; |
524 | |
| 97 | my $name = $op->name; |
525 | my $name = $op->name; |
|
|
526 | my $class = B::class $op; |
|
|
527 | |
|
|
528 | my $insn = { op => $op }; |
|
|
529 | |
|
|
530 | push @ops, $insn; |
|
|
531 | |
|
|
532 | if (exists $extend{$name}) { |
|
|
533 | my $extend = $extend{$name}; |
|
|
534 | $extend = $extend->($op) if ref $extend; |
|
|
535 | $insn->{extend} = $extend if defined $extend; |
|
|
536 | } |
|
|
537 | |
|
|
538 | push @todo, $op->next; |
|
|
539 | |
| 98 | if (B::class($op) eq "LOGOP") { |
540 | if ($class eq "LOGOP") { |
| 99 | push @todo, $op->other; |
541 | push @todo, $op->other; |
| 100 | } elsif ($name eq "subst" and ${ $op->pmreplstart }) { |
542 | $op_target{${$op->other}}++; |
| 101 | push @todo, $op->pmreplstart; |
543 | |
| 102 | } elsif ($name =~ /^enter(loop|iter)$/) { |
544 | # regcomp/o patches ops at runtime, lets expect that |
| 103 | # if ($] > 5.009) { |
545 | if ($name eq "regcomp" && $op->other->pmflags & B::PMf_KEEP) { |
| 104 | # $labels{${$op->nextop}} = "NEXT"; |
546 | $op_target{${$op->first}}++; |
| 105 | # $labels{${$op->lastop}} = "LAST"; |
547 | $op_regcomp{${$op->first}} = $op->next; |
| 106 | # $labels{${$op->redoop}} = "REDO"; |
|
|
| 107 | # } else { |
|
|
| 108 | # $labels{$op->nextop->seq} = "NEXT"; |
|
|
| 109 | # $labels{$op->lastop->seq} = "LAST"; |
|
|
| 110 | # $labels{$op->redoop->seq} = "REDO"; |
|
|
| 111 | # } |
548 | } |
|
|
549 | |
|
|
550 | } elsif ($class eq "PMOP") { |
|
|
551 | if (${$op->pmreplstart}) { |
|
|
552 | unshift @todo, $op->pmreplstart; |
|
|
553 | $op_target{${$op->pmreplstart}}++; |
|
|
554 | } |
|
|
555 | |
|
|
556 | } elsif ($class eq "LOOP") { |
|
|
557 | my @targ = ($op->nextop, $op->lastop->next, $op->redoop->next); |
|
|
558 | |
|
|
559 | push @op_loop, \@targ; |
|
|
560 | push @todo, @targ; |
|
|
561 | |
|
|
562 | $op_target{$$_}++ for @targ; |
|
|
563 | } elsif ($class eq "COP") { |
|
|
564 | $insn->{bblock}++ if defined $op->label; |
| 112 | } |
565 | } |
| 113 | } |
566 | } |
| 114 | } |
567 | } |
| 115 | |
568 | |
|
|
569 | $_->{bblock}++ for grep $op_target{${$_->{op}}}, @ops; |
|
|
570 | |
| 116 | local $source; |
571 | local $source = <<EOF; |
|
|
572 | OP *%%%FUNC%%% (pTHX) |
|
|
573 | { |
|
|
574 | register OP *nextop = (OP *)${$ops[0]->{op}}L; |
|
|
575 | EOF |
| 117 | |
576 | |
| 118 | $source = "typedef OP *(*PPFUNC)(pTHX);\n\n"; |
577 | while (@ops) { |
| 119 | |
578 | $insn = shift @ops; |
| 120 | $source .= "OP *func (pTHX)\n{\n"; |
|
|
| 121 | |
579 | |
| 122 | for my $op (@ops) { |
580 | $op = $insn->{op}; |
| 123 | my $name = $op->name; |
581 | $op_name = $op->name; |
| 124 | my $ppaddr = ppaddr $op->type; |
|
|
| 125 | |
582 | |
|
|
583 | my $class = B::class $op; |
|
|
584 | |
|
|
585 | $source .= "\n/* start basic block */\n" if exists $insn->{bblock};#d# |
| 126 | $source .= "op_$$op: /* $name */\n"; |
586 | $source .= "op_$$op: /* $op_name */\n"; |
|
|
587 | #$source .= "fprintf (stderr, \"$$op in op $op_name\\n\");\n";#d# |
|
|
588 | #$source .= "{ dSP; sv_dump (TOPs); }\n";#d# |
| 127 | |
589 | |
|
|
590 | $source .= " PERL_ASYNC_CHECK ();\n" |
|
|
591 | unless exists $f_noasync{$op_name}; |
|
|
592 | |
| 128 | if (my $can = __PACKAGE__->can ("op_$name")) { |
593 | if (my $can = __PACKAGE__->can ("op_$op_name")) { |
|
|
594 | # handcrafted replacement |
|
|
595 | |
|
|
596 | if ($insn->{extend} > 0) { |
|
|
597 | # coalesce EXTENDs |
|
|
598 | # TODO: properly take negative preceeding and following EXTENDs into account |
|
|
599 | for my $i (@ops) { |
|
|
600 | last if exists $i->{bblock}; |
|
|
601 | last unless exists $i->{extend}; |
|
|
602 | my $extend = delete $i->{extend}; |
|
|
603 | $insn->{extend} += $extend if $extend > 0; |
|
|
604 | } |
|
|
605 | |
|
|
606 | $source .= " { dSP; EXTEND (SP, $insn->{extend}); PUTBACK; }\n" |
|
|
607 | if $insn->{extend} > 0; |
|
|
608 | } |
|
|
609 | |
| 129 | $can->($op); |
610 | $can->($op); |
| 130 | } elsif ("LOGOP" eq B::class $op or exists $flag{otherop}{$name}) { |
611 | |
| 131 | $source .= " PL_op = ((PPFUNC)${ppaddr}L)(aTHX);\n"; |
|
|
| 132 | $source .= " if (PL_op == (OP *)${$op->other}L) goto op_${$op->other};\n"; |
|
|
| 133 | $source .= " goto op_${$op->next};\n"; |
|
|
| 134 | } elsif (exists $flag{unsafe}{$name}) { |
612 | } elsif (exists $f_unsafe{$op_name}) { |
| 135 | $source .= " return ((PPFUNC)${ppaddr}L)(aTHX);\n"; |
613 | # unsafe, return to interpreter |
|
|
614 | assert "nextop == (OP *)$$op"; |
|
|
615 | $source .= " return nextop;\n"; |
|
|
616 | |
|
|
617 | } elsif ("LOGOP" eq $class) { |
|
|
618 | # logical operation with optional branch |
|
|
619 | out_callop; |
|
|
620 | out_cond_jump $op->other; |
|
|
621 | out_jump_next; |
|
|
622 | |
|
|
623 | } elsif ("PMOP" eq $class) { |
|
|
624 | # regex-thingy |
|
|
625 | out_callop; |
|
|
626 | out_cond_jump $op->pmreplroot if $op_name ne "pushre" && ${$op->pmreplroot}; |
|
|
627 | out_jump_next; |
|
|
628 | |
| 136 | } else { |
629 | } else { |
| 137 | $source .= " PL_op = ((PPFUNC)${ppaddr}L)(aTHX);\n"; |
630 | # normal operator, linear execution |
| 138 | $source .= " goto op_${$op->next};\n"; |
631 | out_linear; |
|
|
632 | } |
|
|
633 | } |
|
|
634 | |
|
|
635 | $op_name = "func exit"; assert (0); |
|
|
636 | |
|
|
637 | $source .= <<EOF; |
|
|
638 | op_0: |
|
|
639 | return 0; |
|
|
640 | } |
|
|
641 | EOF |
|
|
642 | #warn $source; |
|
|
643 | |
|
|
644 | $source |
|
|
645 | } |
|
|
646 | |
|
|
647 | my $uid = "aaaaaaa0"; |
|
|
648 | my %so; |
|
|
649 | |
|
|
650 | sub func2ptr { |
|
|
651 | my (@func) = @_; |
|
|
652 | |
|
|
653 | #LOCK |
|
|
654 | mkdir $CACHEDIR, 0777; |
|
|
655 | sysopen my $meta_fh, "$CACHEDIR/meta", &Fcntl::O_RDWR | &Fcntl::O_CREAT, 0666 |
|
|
656 | or die "$$CACHEDIR/meta: $!"; |
|
|
657 | binmode $meta_fh, ":raw:perlio"; |
|
|
658 | fcntl_lock fileno $meta_fh |
|
|
659 | or die "$CACHEDIR/meta: $!"; |
|
|
660 | |
|
|
661 | my $meta = eval { Storable::fd_retrieve $meta_fh } || { version => 1 }; |
|
|
662 | |
|
|
663 | for my $f (@func) { |
|
|
664 | $f->{func} = "F" . Digest::MD5::md5_hex ($f->{source}); |
|
|
665 | $f->{so} = $meta->{$f->{func}}; |
|
|
666 | } |
|
|
667 | |
|
|
668 | if (grep !$_->{so}, @func) { |
|
|
669 | my $stem; |
| 139 | } |
670 | |
| 140 | } |
671 | do { |
|
|
672 | $stem = "$CACHEDIR/$$-" . $uid++; |
|
|
673 | } while -e "$stem$_so"; |
| 141 | |
674 | |
| 142 | $source .= "}\n"; |
675 | open my $fh, ">:raw", "$stem.c"; |
| 143 | |
|
|
| 144 | print <<EOF; |
676 | print $fh <<EOF; |
|
|
677 | #define PERL_NO_GET_CONTEXT |
|
|
678 | #define PERL_CORE |
|
|
679 | |
|
|
680 | #include <assert.h> |
|
|
681 | |
| 145 | #include "EXTERN.h" |
682 | #include "EXTERN.h" |
| 146 | #include "perl.h" |
683 | #include "perl.h" |
| 147 | #include "XSUB.h" |
684 | #include "XSUB.h" |
|
|
685 | |
|
|
686 | #define RUNOPS_TILL(op) \\ |
|
|
687 | while (nextop != (op)) \\ |
|
|
688 | { \\ |
|
|
689 | PERL_ASYNC_CHECK (); \\ |
|
|
690 | PL_op = nextop; nextop = (PL_op->op_ppaddr)(aTHX); \\ |
|
|
691 | } |
|
|
692 | |
| 148 | EOF |
693 | EOF |
|
|
694 | for my $f (grep !$_->{so}, @func) { |
|
|
695 | next if $f->{so} = $meta->{$f->{func}}; # some cv's alias others |
|
|
696 | |
|
|
697 | warn "compiling $f->{name} to $stem$_so:$f->{func}\n" if $verbose > 1; |
|
|
698 | my $source = $f->{source}; |
|
|
699 | $source =~ s/%%%FUNC%%%/$f->{func}/g; |
| 149 | print $source; |
700 | print $fh $source; |
|
|
701 | $meta->{$f->{func}} = $f->{so} = $stem; |
|
|
702 | } |
|
|
703 | |
|
|
704 | close $fh; |
|
|
705 | system "$COMPILE -o $stem$_o $stem.c"; |
|
|
706 | unlink "$stem.c"; |
|
|
707 | system "$LINK -o $stem$_so $stem$_o $LIBS"; |
|
|
708 | unlink "$stem$_o"; |
|
|
709 | } |
|
|
710 | |
|
|
711 | for my $f (@func) { |
|
|
712 | my $stem = $f->{so}; |
|
|
713 | |
|
|
714 | my $so = ($so{$stem} ||= DynaLoader::dl_load_file "$stem$_so") |
|
|
715 | or die "$stem$_so: $!"; |
|
|
716 | |
|
|
717 | #unlink "$stem$_so"; |
|
|
718 | |
|
|
719 | $f->{ptr} = DynaLoader::dl_find_symbol $so, $f->{func} |
|
|
720 | or die "$f->{func} not found in $stem$_so: $!"; |
|
|
721 | } |
|
|
722 | |
|
|
723 | seek $meta_fh, 0, 0 or die "$CACHEDIR/meta: $!"; |
|
|
724 | Storable::nstore_fd $meta, $meta_fh; |
|
|
725 | truncate $meta_fh, tell $meta_fh; |
|
|
726 | |
|
|
727 | # UNLOCK (by closing $meta_fh) |
|
|
728 | } |
|
|
729 | |
|
|
730 | my %ignore; |
|
|
731 | |
|
|
732 | sub entersub { |
|
|
733 | my ($cv) = @_; |
|
|
734 | |
|
|
735 | my $pkg = $cv->STASH->NAME; |
|
|
736 | |
|
|
737 | return if $ignore{$pkg}; |
|
|
738 | |
|
|
739 | warn "optimising ", $cv->STASH->NAME, "\n" |
|
|
740 | if $verbose; |
|
|
741 | |
|
|
742 | eval { |
|
|
743 | my @func; |
|
|
744 | |
|
|
745 | push @func, { |
|
|
746 | cv => $cv, |
|
|
747 | name => "<>", |
|
|
748 | source => cv2c $cv, |
|
|
749 | }; |
|
|
750 | |
|
|
751 | # always compile the whole stash |
|
|
752 | my %stash = $cv->STASH->ARRAY; |
|
|
753 | while (my ($k, $v) = each %stash) { |
|
|
754 | $v->isa (B::GV::) |
|
|
755 | or next; |
|
|
756 | |
|
|
757 | my $cv = $v->CV; |
|
|
758 | |
|
|
759 | if ($cv->isa (B::CV::) |
|
|
760 | && ${$cv->START} |
|
|
761 | && $cv->START->name ne "null") { |
|
|
762 | |
|
|
763 | push @func, { |
|
|
764 | cv => $cv, |
|
|
765 | name => $k, |
|
|
766 | source => cv2c $cv, |
|
|
767 | }; |
|
|
768 | } |
|
|
769 | } |
|
|
770 | |
|
|
771 | func2ptr @func; |
|
|
772 | |
|
|
773 | for my $f (@func) { |
|
|
774 | patch_cv $f->{cv}, $f->{ptr}; |
|
|
775 | } |
|
|
776 | }; |
|
|
777 | |
|
|
778 | if ($@) { |
|
|
779 | $ignore{$pkg}++; |
|
|
780 | warn $@; |
|
|
781 | } |
| 150 | } |
782 | } |
| 151 | |
783 | |
| 152 | hook_entersub; |
784 | hook_entersub; |
| 153 | |
785 | |
| 154 | 1; |
786 | 1; |
| 155 | |
787 | |
| 156 | =back |
788 | =back |
| 157 | |
789 | |
|
|
790 | =head1 ENVIRONMENT VARIABLES |
|
|
791 | |
|
|
792 | The following environment variables influence the behaviour of Faster: |
|
|
793 | |
|
|
794 | =over 4 |
|
|
795 | |
|
|
796 | =item FASTER_VERBOSE |
|
|
797 | |
|
|
798 | Faster will output more informational messages when set to values higher |
|
|
799 | than C<0>. Currently, C<1> outputs which packages are being compiled, C<3> |
|
|
800 | outputs the cache directory and C<10> outputs information on which perl |
|
|
801 | function is compiled into which shared object. |
|
|
802 | |
|
|
803 | =item FASTER_DEBUG |
|
|
804 | |
|
|
805 | Add debugging code when set to values higher than C<0>. Currently, this |
|
|
806 | adds 1-3 C<assert>'s per perl op, to ensure that opcode order and C |
|
|
807 | execution order are compatible. |
|
|
808 | |
|
|
809 | =item FASTER_CACHE |
|
|
810 | |
|
|
811 | Set a persistent cache directory that caches compiled code fragments. The |
|
|
812 | default is C<$HOME/.perl-faster-cache> if C<HOME> is set and a temporary |
|
|
813 | directory otherwise. |
|
|
814 | |
|
|
815 | This directory will always grow in size, so you might need to erase it |
|
|
816 | from time to time. |
|
|
817 | |
|
|
818 | =back |
|
|
819 | |
| 158 | =head1 LIMITATIONS |
820 | =head1 BUGS/LIMITATIONS |
| 159 | |
821 | |
| 160 | Tainting and debugging will disable Faster. |
822 | Perl will check much less often for asynchronous signals in |
|
|
823 | Faster-compiled code. It tries to check on every function call, loop |
|
|
824 | iteration and every I/O operator, though. |
|
|
825 | |
|
|
826 | The following things will disable Faster. If you manage to enable them at |
|
|
827 | runtime, bad things will happen. Enabling them at startup will be fine, |
|
|
828 | though. |
|
|
829 | |
|
|
830 | enabled tainting |
|
|
831 | enabled debugging |
|
|
832 | |
|
|
833 | Thread-enabled builds of perl will dramatically reduce Faster's |
|
|
834 | performance, but you don't care about speed if you enable threads anyway. |
|
|
835 | |
|
|
836 | These constructs will force the use of the interpreter for the currently |
|
|
837 | executed function as soon as they are being encountered during execution. |
|
|
838 | |
|
|
839 | goto |
|
|
840 | next, redo (but not well-behaved last's) |
|
|
841 | eval |
|
|
842 | require |
|
|
843 | any use of formats |
|
|
844 | .., ... (flipflop operators) |
| 161 | |
845 | |
| 162 | =head1 AUTHOR |
846 | =head1 AUTHOR |
| 163 | |
847 | |
| 164 | Marc Lehmann <schmorp@schmorp.de> |
848 | Marc Lehmann <schmorp@schmorp.de> |
| 165 | http://home.schmorp.de/ |
849 | http://home.schmorp.de/ |
