| … | |
… | |
| 4 | |
4 | |
| 5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
| 6 | |
6 | |
| 7 | use Faster; |
7 | use Faster; |
| 8 | |
8 | |
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9 | perl -MFaster ... |
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10 | |
| 9 | =head1 DESCRIPTION |
11 | =head1 DESCRIPTION |
| 10 | |
12 | |
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13 | This module implements a very simple-minded "JIT" (or actually AIT, ahead |
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14 | of time compiler). It works by more or less translating every function it |
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15 | sees into a C program, compiling it and then replacing the function by the |
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16 | compiled code. |
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17 | |
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18 | As a result, startup times are immense, as every function might lead to a |
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19 | full-blown compilation. |
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20 | |
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21 | The speed improvements are also not great, you can expect 20% or so on |
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22 | average, for code that runs very often. The reason for this is that data |
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23 | handling is mostly being done by the same old code, it just gets called |
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24 | a bit faster. Regexes and string operations won't get faster. Airhtmetic |
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25 | doresn't become any faster. Just the operands and other stuff is put on |
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26 | the stack faster, and the opcodes themselves have a bit less overhead. |
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27 | |
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28 | Faster is in the early stages of development. Due to its design its |
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29 | relatively safe to use (it will either work or simply slowdown the program |
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30 | immensely, but rarely cause bugs). |
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31 | |
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32 | Usage is very easy, just C<use Faster> and every function called from then |
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33 | on will be compiled. |
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34 | |
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35 | Right now, Faster can leave lots of F<*.c> and F<*.so> files in your |
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36 | F<$FASTER_CACHEDIR> (by default F<$HOME/.perl-faster-cache>), and it will |
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37 | even create those temporary files in an insecure manner, so watch out. |
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38 | |
| 11 | =over 4 |
39 | =over 4 |
| 12 | |
40 | |
| 13 | =cut |
41 | =cut |
| 14 | |
42 | |
| 15 | package Faster; |
43 | package Faster; |
| 16 | |
44 | |
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45 | no warnings; |
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46 | |
| 17 | use strict; |
47 | use strict; |
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48 | use Config; |
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49 | use B (); |
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50 | use DynaLoader (); |
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51 | use Digest::MD5 (); |
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52 | use Storable (); |
|
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53 | use Fcntl (); |
| 18 | |
54 | |
| 19 | BEGIN { |
55 | BEGIN { |
| 20 | our $VERSION = '0.01'; |
56 | our $VERSION = '0.01'; |
| 21 | |
57 | |
| 22 | require XSLoader; |
58 | require XSLoader; |
| 23 | XSLoader::load __PACKAGE__, $VERSION; |
59 | XSLoader::load __PACKAGE__, $VERSION; |
| 24 | } |
60 | } |
| 25 | |
61 | |
| 26 | use B (); |
62 | my $CACHEDIR = |
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63 | $ENV{FASTER_CACHE} |
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64 | || (exists $ENV{HOME} && "$ENV{HOME}/.perl-faster-cache") |
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65 | || do { |
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66 | require File::Temp; |
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67 | File::Temp::tempdir (CLEANUP => 1) |
|
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68 | }; |
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69 | |
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70 | my $COMPILE = "$Config{cc} -c -I$Config{archlibexp}/CORE $Config{optimize} $Config{ccflags} $Config{cccdlflags}"; |
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71 | my $LINK = "$Config{ld} $Config{ldflags} $Config{lddlflags} $Config{ccdlflags}"; |
|
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72 | my $LIBS = "$Config{libs}"; |
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73 | my $_o = $Config{_o}; |
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74 | my $_so = ".so"; |
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75 | |
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76 | # we don't need no steenking PIC on x86 |
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77 | $COMPILE =~ s/-f(?:PIC|pic)//g |
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78 | if $Config{archname} =~ /^(i[3456]86)-/; |
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79 | |
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80 | my $opt_assert = $ENV{FASTER_DEBUG} > 1; |
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81 | my $verbose = $ENV{FASTER_VERBOSE}+0; |
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82 | |
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83 | warn "Faster: CACHEDIR is $CACHEDIR\n" if $verbose > 2; |
| 27 | |
84 | |
| 28 | our $source; |
85 | our $source; |
| 29 | our $label_next; |
|
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| 30 | our $label_last; |
|
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| 31 | our $label_redo; |
|
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| 32 | |
86 | |
| 33 | my %flag; |
87 | our @ops; |
|
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88 | our $insn; |
|
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89 | our $op; |
|
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90 | our $op_name; |
|
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91 | our @op_loop; |
|
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92 | our %op_regcomp; |
| 34 | |
93 | |
| 35 | for (split /\n/, <<EOF) { |
94 | # ops that cause immediate return to the interpreter |
| 36 | leavesub unsafe |
95 | my %f_unsafe = map +($_ => undef), qw( |
| 37 | leavesublv unsafe |
96 | leavesub leavesublv return |
| 38 | return unsafe |
97 | goto last redo next |
| 39 | flip unsafe |
98 | eval flip leaveeval entertry |
| 40 | goto unsafe |
99 | formline grepstart mapstart |
| 41 | last unsafe |
100 | substcont entereval require |
| 42 | redo unsafe |
101 | ); |
| 43 | next unsafe |
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| 44 | eval unsafe |
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| 45 | leaveeval unsafe |
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| 46 | entertry unsafe |
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| 47 | substconst unsafe |
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| 48 | formline unsafe |
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| 49 | grepstart unsafe |
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| 50 | EOF |
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| 51 | my (undef, $op, @flags) = split /\s+/; |
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| 52 | |
102 | |
| 53 | undef $flag{$_}{$op} |
103 | # ops with known stack extend behaviour |
| 54 | for ("known", @flags); |
104 | # the values given are maximum values |
|
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105 | my %extend = ( |
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106 | pushmark => 0, |
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107 | nextstate => 0, # might reduce the stack |
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108 | unstack => 0, |
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109 | enter => 0, |
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110 | |
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111 | stringify => 0, |
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112 | not => 0, |
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113 | and => 0, |
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114 | or => 0, |
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115 | gvsv => 0, |
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116 | rv2gv => 0, |
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117 | preinc => 0, |
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118 | predec => 0, |
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119 | postinc => 0, |
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120 | postdec => 0, |
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121 | aelem => 0, |
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122 | helem => 0, |
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123 | qr => 1, #??? |
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124 | pushre => 1, |
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125 | gv => 1, |
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126 | aelemfast => 1, |
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127 | aelem => 0, |
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128 | padsv => 1, |
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129 | const => 1, |
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130 | pop => 1, |
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131 | shift => 1, |
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132 | eq => -1, |
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133 | ne => -1, |
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134 | gt => -1, |
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135 | lt => -1, |
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136 | ge => -1, |
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137 | lt => -1, |
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138 | cond_expr => -1, |
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139 | add => -1, |
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140 | subtract => -1, |
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141 | multiply => -1, |
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142 | divide => -1, |
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143 | aassign => 0, |
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144 | sassign => -2, |
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145 | method => 0, |
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146 | method_named => 1, |
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147 | ); |
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148 | |
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149 | # ops that do not need an ASYNC_CHECK |
|
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150 | my %f_noasync = map +($_ => undef), qw( |
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151 | mapstart grepstart match entereval |
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152 | enteriter entersub leaveloop |
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153 | |
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154 | pushmark nextstate caller |
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155 | |
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156 | const stub unstack |
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157 | last next redo goto seq |
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158 | padsv padav padhv padany |
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159 | aassign sassign orassign |
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160 | rv2av rv2cv rv2gv rv2hv refgen |
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161 | gv gvsv |
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162 | add subtract multiply divide |
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163 | complement cond_expr and or not |
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164 | bit_and bit_or bit_xor |
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165 | defined |
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166 | method method_named bless |
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167 | preinc postinc predec postdec |
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168 | aelem aelemfast helem delete exists |
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169 | pushre subst list lslice join split concat |
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170 | length substr stringify ord |
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171 | push pop shift unshift |
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172 | eq ne gt lt ge le |
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173 | regcomp regcreset regcmaybe |
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174 | ); |
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175 | |
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176 | my %callop = ( |
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177 | entersub => "(PL_op->op_ppaddr) (aTHX)", |
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178 | mapstart => "Perl_pp_grepstart (aTHX)", |
|
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179 | ); |
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180 | |
|
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181 | sub callop { |
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182 | $callop{$op_name} || "Perl_pp_$op_name (aTHX)" |
|
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183 | } |
|
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184 | |
|
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185 | sub assert { |
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186 | return unless $opt_assert; |
|
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187 | $source .= " assert ((\"$op_name\", ($_[0])));\n"; |
|
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188 | } |
|
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189 | |
|
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190 | sub out_callop { |
|
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191 | assert "nextop == (OP *)$$op"; |
|
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192 | $source .= " PL_op = nextop; nextop = " . (callop $op) . ";\n"; |
|
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193 | } |
|
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194 | |
|
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195 | sub out_cond_jump { |
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196 | $source .= " if (nextop == (OP *)${$_[0]}L) goto op_${$_[0]};\n"; |
|
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197 | } |
|
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198 | |
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199 | sub out_jump_next { |
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200 | out_cond_jump $op_regcomp{$$op} |
|
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201 | if $op_regcomp{$$op}; |
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202 | |
|
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203 | assert "nextop == (OP *)${$op->next}"; |
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204 | $source .= " goto op_${$op->next};\n"; |
| 55 | } |
205 | } |
| 56 | |
206 | |
| 57 | sub out_next { |
207 | sub out_next { |
| 58 | my ($op) = @_; |
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| 59 | |
|
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| 60 | my $ppaddr = ppaddr $op->type; |
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| 61 | |
|
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| 62 | $source .= " PL_op = (OP *)${$op->next}L;\n"; |
208 | $source .= " nextop = (OP *)${$op->next}L;\n"; |
| 63 | $source .= " goto op_${$op->next};\n"; |
209 | |
|
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210 | out_jump_next; |
| 64 | } |
211 | } |
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212 | |
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213 | sub out_linear { |
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214 | out_callop; |
|
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215 | out_jump_next; |
|
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216 | } |
|
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217 | |
|
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218 | sub op_entersub { |
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219 | out_callop; |
|
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220 | $source .= " RUNOPS_TILL ((OP *)${$op->next}L);\n"; |
|
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221 | out_jump_next; |
|
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222 | } |
|
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223 | |
|
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224 | *op_require = \&op_entersub; |
| 65 | |
225 | |
| 66 | sub op_nextstate { |
226 | sub op_nextstate { |
| 67 | my ($op) = @_; |
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| 68 | |
|
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| 69 | $source .= " PL_curcop = (COP *)PL_op;\n"; |
227 | $source .= " PL_curcop = (COP *)nextop;\n"; |
| 70 | $source .= " PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;\n"; |
228 | $source .= " PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;\n"; |
| 71 | $source .= " FREETMPS;\n"; |
229 | $source .= " FREETMPS;\n"; |
| 72 | |
230 | |
| 73 | out_next $op; |
231 | out_next; |
| 74 | } |
232 | } |
| 75 | |
233 | |
| 76 | sub op_const { |
234 | sub op_pushmark { |
| 77 | my ($op) = @_; |
235 | $source .= " faster_PUSHMARK (PL_stack_sp);\n"; |
| 78 | |
236 | |
|
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237 | out_next; |
|
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238 | } |
|
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239 | |
|
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240 | if ($Config{useithreads} ne "define") { |
|
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241 | # disable optimisations on ithreads |
|
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242 | |
|
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243 | *op_const = sub { |
| 79 | $source .= " { dSP; XPUSHs ((SV *)${$op->sv}L); PUTBACK; }\n"; |
244 | $source .= " { dSP; PUSHs ((SV *)${$op->sv}L); PUTBACK; }\n"; |
| 80 | |
245 | |
|
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246 | $ops[0]{follows_const}++ if @ops;#d# |
|
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247 | |
| 81 | out_next $op; |
248 | out_next; |
| 82 | } |
249 | }; |
| 83 | |
250 | |
| 84 | *op_gv = \&op_const; |
251 | *op_gv = \&op_const; |
| 85 | |
252 | |
| 86 | sub entersub { |
253 | *op_aelemfast = sub { |
|
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254 | my $targ = $op->targ; |
|
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255 | my $private = $op->private; |
|
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256 | |
|
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257 | $source .= " {\n"; |
|
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258 | |
|
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259 | if ($op->flags & B::OPf_SPECIAL) { |
|
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260 | $source .= " AV *av = (AV*)PAD_SV((PADOFFSET)$targ);\n"; |
|
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261 | } else { |
|
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262 | $source .= " AV *av = GvAV ((GV *)${$op->sv}L);\n"; |
|
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263 | } |
|
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264 | |
|
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265 | if ($op->flags & B::OPf_MOD) { |
|
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266 | $source .= " SV *sv = *av_fetch (av, $private, 1);\n"; |
|
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267 | } else { |
|
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268 | $source .= " SV **svp = av_fetch (av, $private, 0); SV *sv = svp ? *svp : &PL_sv_undef;\n"; |
|
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269 | } |
|
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270 | |
|
|
271 | if (!($op->flags & B::OPf_MOD)) { |
|
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272 | $source .= " if (SvGMAGICAL (sv)) sv = sv_mortalcopy (sv);\n"; |
|
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273 | } |
|
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274 | |
|
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275 | $source .= " dSP;\n"; |
|
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276 | $source .= " PUSHs (sv);\n"; |
|
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277 | $source .= " PUTBACK;\n"; |
|
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278 | $source .= " }\n"; |
|
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279 | |
|
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280 | out_next; |
|
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281 | }; |
|
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282 | |
|
|
283 | *op_gvsv = sub { |
|
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284 | $source .= " {\n"; |
|
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285 | $source .= " dSP;\n"; |
|
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286 | |
|
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287 | if ($op->private & B::OPpLVAL_INTRO) { |
|
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288 | $source .= " PUSHs (save_scalar ((GV *)${$op->sv}L));\n"; |
|
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289 | } else { |
|
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290 | $source .= " PUSHs (GvSV ((GV *)${$op->sv}L));\n"; |
|
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291 | } |
|
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292 | |
|
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293 | $source .= " PUTBACK;\n"; |
|
|
294 | $source .= " }\n"; |
|
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295 | |
|
|
296 | out_next; |
|
|
297 | }; |
|
|
298 | } |
|
|
299 | |
|
|
300 | # does kill Crossfire/res2pm |
|
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301 | sub op_stringify { |
|
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302 | my $targ = $op->targ; |
|
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303 | |
|
|
304 | $source .= <<EOF; |
|
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305 | { |
|
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306 | dSP; |
|
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307 | SV *targ = PAD_SV ((PADOFFSET)$targ); |
|
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308 | sv_copypv (TARG, TOPs); |
|
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309 | SETTARG; |
|
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310 | PUTBACK; |
|
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311 | } |
|
|
312 | EOF |
|
|
313 | |
|
|
314 | out_next; |
|
|
315 | } |
|
|
316 | |
|
|
317 | sub op_and { |
|
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318 | $source .= <<EOF; |
|
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319 | { |
|
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320 | dSP; |
|
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321 | |
|
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322 | if (SvTRUE (TOPs)) |
|
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323 | { |
|
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324 | --SP; |
|
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325 | PUTBACK; |
|
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326 | nextop = (OP *)${$op->other}L; |
|
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327 | goto op_${$op->other}; |
|
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328 | } |
|
|
329 | } |
|
|
330 | EOF |
|
|
331 | |
|
|
332 | out_next; |
|
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333 | } |
|
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334 | |
|
|
335 | sub op_or { |
|
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336 | $source .= <<EOF; |
|
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337 | { |
|
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338 | dSP; |
|
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339 | |
|
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340 | if (!SvTRUE (TOPs)) |
|
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341 | { |
|
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342 | --SP; |
|
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343 | PUTBACK; |
|
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344 | nextop = (OP *)${$op->other}L; |
|
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345 | goto op_${$op->other}; |
|
|
346 | } |
|
|
347 | } |
|
|
348 | EOF |
|
|
349 | |
|
|
350 | out_next; |
|
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351 | } |
|
|
352 | |
|
|
353 | sub op_padsv { |
|
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354 | my $flags = $op->flags; |
|
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355 | my $padofs = "(PADOFFSET)" . $op->targ; |
|
|
356 | |
|
|
357 | $source .= <<EOF; |
|
|
358 | { |
|
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359 | dSP; |
|
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360 | SV *sv = PAD_SVl ($padofs); |
|
|
361 | EOF |
|
|
362 | |
|
|
363 | if (($flags & B::OPf_MOD) && ($op->private & B::OPpLVAL_INTRO)) { |
|
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364 | $source .= " SAVECLEARSV (PAD_SVl ($padofs));\n"; |
|
|
365 | $ops[0]{follows_padsv_lval_intro}++ if @ops;#d# |
|
|
366 | } |
|
|
367 | |
|
|
368 | $source .= <<EOF; |
|
|
369 | PUSHs (sv); |
|
|
370 | PUTBACK; |
|
|
371 | EOF |
|
|
372 | |
|
|
373 | if (($flags & B::OPf_MOD) && ($op->private & B::OPpDEREF)) { |
|
|
374 | $source .= " if (!SvROK (sv)) vivify_ref (sv, " . $op->private . " & OPpDEREF);\n"; |
|
|
375 | } |
|
|
376 | $source .= " }\n"; |
|
|
377 | |
|
|
378 | out_next; |
|
|
379 | } |
|
|
380 | |
|
|
381 | sub op_sassign { |
|
|
382 | $source .= <<EOF; |
|
|
383 | { |
|
|
384 | dSP; |
|
|
385 | dPOPTOPssrl; |
|
|
386 | EOF |
|
|
387 | $source .= " SV *temp = left; left = right; right = temp;\n" |
|
|
388 | if $op->private & B::OPpASSIGN_BACKWARDS; |
|
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389 | |
|
|
390 | if ($insn->{follows_padsv_lval_intro} && !($op->private & B::OPpASSIGN_BACKWARDS)) { |
|
|
391 | # simple assignment - the target exists, but is basically undef |
|
|
392 | $source .= " SvSetSV (right, left);\n"; |
|
|
393 | } else { |
|
|
394 | $source .= " SvSetMagicSV (right, left);\n"; |
|
|
395 | } |
|
|
396 | |
|
|
397 | $source .= <<EOF; |
|
|
398 | SETs (right); |
|
|
399 | PUTBACK; |
|
|
400 | } |
|
|
401 | EOF |
|
|
402 | |
|
|
403 | out_next; |
|
|
404 | } |
|
|
405 | |
|
|
406 | # pattern const+ (or general push1) |
|
|
407 | # pattern pushmark gv rv2av pushmark padsv+o.รค. aassign |
|
|
408 | |
|
|
409 | sub op_method_named { |
|
|
410 | if ($insn->{follows_const}) { |
|
|
411 | $source .= <<EOF; |
|
|
412 | { |
|
|
413 | dSP; |
|
|
414 | static SV *last_cv; |
|
|
415 | static U32 last_sub_generation; |
|
|
416 | |
|
|
417 | /* simple "polymorphic" inline cache */ |
|
|
418 | if (PL_sub_generation == last_sub_generation) |
|
|
419 | { |
|
|
420 | PUSHs (last_cv); |
|
|
421 | PUTBACK; |
|
|
422 | } |
|
|
423 | else |
|
|
424 | { |
|
|
425 | PL_op = nextop; nextop = Perl_pp_method_named (aTHX); |
|
|
426 | |
|
|
427 | SPAGAIN; |
|
|
428 | last_sub_generation = PL_sub_generation; |
|
|
429 | last_cv = TOPs; |
|
|
430 | } |
|
|
431 | } |
|
|
432 | EOF |
|
|
433 | } else { |
|
|
434 | $source .= <<EOF; |
|
|
435 | { |
|
|
436 | static HV *last_stash; |
|
|
437 | static SV *last_cv; |
|
|
438 | static U32 last_sub_generation; |
|
|
439 | |
|
|
440 | SV *obj = *(PL_stack_base + TOPMARK + 1); |
|
|
441 | |
|
|
442 | if (!SvGMAGICAL (obj) && SvROK (obj) && SvOBJECT (SvRV (obj))) |
|
|
443 | { |
|
|
444 | dSP; |
|
|
445 | HV *stash = SvSTASH (SvRV (obj)); |
|
|
446 | |
|
|
447 | /* simple "polymorphic" inline cache */ |
|
|
448 | if (stash == last_stash |
|
|
449 | && PL_sub_generation == last_sub_generation) |
|
|
450 | { |
|
|
451 | PUSHs (last_cv); |
|
|
452 | PUTBACK; |
|
|
453 | } |
|
|
454 | else |
|
|
455 | { |
|
|
456 | PL_op = nextop; nextop = Perl_pp_method_named (aTHX); |
|
|
457 | |
|
|
458 | SPAGAIN; |
|
|
459 | last_sub_generation = PL_sub_generation; |
|
|
460 | last_stash = stash; |
|
|
461 | last_cv = TOPs; |
|
|
462 | } |
|
|
463 | } |
|
|
464 | else |
|
|
465 | { |
|
|
466 | /* error case usually */ |
|
|
467 | PL_op = nextop; nextop = Perl_pp_method_named (aTHX); |
|
|
468 | } |
|
|
469 | } |
|
|
470 | EOF |
|
|
471 | } |
|
|
472 | |
|
|
473 | out_next; |
|
|
474 | } |
|
|
475 | |
|
|
476 | sub op_grepstart { |
|
|
477 | out_callop; |
|
|
478 | $op = $op->next; |
|
|
479 | out_cond_jump $op->other; |
|
|
480 | out_jump_next; |
|
|
481 | } |
|
|
482 | |
|
|
483 | *op_mapstart = \&op_grepstart; |
|
|
484 | |
|
|
485 | sub op_substcont { |
|
|
486 | out_callop; |
|
|
487 | out_cond_jump $op->other->pmreplstart; |
|
|
488 | assert "nextop == (OP *)${$op->other->next}L"; |
|
|
489 | $source .= " goto op_${$op->other->next};\n"; |
|
|
490 | } |
|
|
491 | |
|
|
492 | sub out_break_op { |
|
|
493 | my ($idx) = @_; |
|
|
494 | |
|
|
495 | out_callop; |
|
|
496 | |
|
|
497 | out_cond_jump $_->[$idx] |
|
|
498 | for reverse @op_loop; |
|
|
499 | |
|
|
500 | $source .= " return nextop;\n"; |
|
|
501 | } |
|
|
502 | |
|
|
503 | sub xop_next { |
|
|
504 | out_break_op 0; |
|
|
505 | } |
|
|
506 | |
|
|
507 | sub op_last { |
|
|
508 | out_break_op 1; |
|
|
509 | } |
|
|
510 | |
|
|
511 | sub xop_redo { |
|
|
512 | out_break_op 2; |
|
|
513 | } |
|
|
514 | |
|
|
515 | sub cv2c { |
| 87 | my ($cv) = @_; |
516 | my ($cv) = @_; |
| 88 | |
517 | |
|
|
518 | local @ops; |
|
|
519 | local @op_loop; |
|
|
520 | local %op_regcomp; |
|
|
521 | |
| 89 | my %opsseen; |
522 | my %opsseen; |
| 90 | my @ops; |
|
|
| 91 | my @todo = $cv->START; |
523 | my @todo = $cv->START; |
|
|
524 | my %op_target; |
|
|
525 | my $numpushmark; |
| 92 | |
526 | |
| 93 | while (my $op = shift @todo) { |
527 | while (my $op = shift @todo) { |
| 94 | for (; $$op; $op = $op->next) { |
528 | for (; $$op; $op = $op->next) { |
| 95 | last if $opsseen{$$op}++; |
529 | last if $opsseen{$$op}++; |
| 96 | push @ops, $op; |
530 | |
| 97 | my $name = $op->name; |
531 | my $name = $op->name; |
|
|
532 | my $class = B::class $op; |
|
|
533 | |
|
|
534 | my $insn = { op => $op }; |
|
|
535 | |
|
|
536 | push @ops, $insn; |
|
|
537 | |
|
|
538 | if (exists $extend{$name}) { |
|
|
539 | my $extend = $extend{$name}; |
|
|
540 | $extend = $extend->($op) if ref $extend; |
|
|
541 | $insn->{extend} = $extend if defined $extend; |
|
|
542 | } |
|
|
543 | |
|
|
544 | push @todo, $op->next; |
|
|
545 | |
| 98 | if (B::class($op) eq "LOGOP") { |
546 | if ($class eq "LOGOP") { |
| 99 | push @todo, $op->other; |
547 | push @todo, $op->other; |
| 100 | } elsif ($name eq "subst" and ${ $op->pmreplstart }) { |
548 | $op_target{${$op->other}}++; |
| 101 | push @todo, $op->pmreplstart; |
549 | |
| 102 | } elsif ($name =~ /^enter(loop|iter)$/) { |
550 | # regcomp/o patches ops at runtime, lets expect that |
| 103 | # if ($] > 5.009) { |
551 | if ($name eq "regcomp" && $op->other->pmflags & B::PMf_KEEP) { |
| 104 | # $labels{${$op->nextop}} = "NEXT"; |
552 | $op_target{${$op->first}}++; |
| 105 | # $labels{${$op->lastop}} = "LAST"; |
553 | $op_regcomp{${$op->first}} = $op->next; |
| 106 | # $labels{${$op->redoop}} = "REDO"; |
|
|
| 107 | # } else { |
|
|
| 108 | # $labels{$op->nextop->seq} = "NEXT"; |
|
|
| 109 | # $labels{$op->lastop->seq} = "LAST"; |
|
|
| 110 | # $labels{$op->redoop->seq} = "REDO"; |
|
|
| 111 | # } |
554 | } |
|
|
555 | |
|
|
556 | } elsif ($class eq "PMOP") { |
|
|
557 | if (${$op->pmreplstart}) { |
|
|
558 | unshift @todo, $op->pmreplstart; |
|
|
559 | $op_target{${$op->pmreplstart}}++; |
|
|
560 | } |
|
|
561 | |
|
|
562 | } elsif ($class eq "LOOP") { |
|
|
563 | my @targ = ($op->nextop, $op->lastop->next, $op->redoop->next); |
|
|
564 | |
|
|
565 | push @op_loop, \@targ; |
|
|
566 | push @todo, @targ; |
|
|
567 | |
|
|
568 | $op_target{$$_}++ for @targ; |
|
|
569 | |
|
|
570 | } elsif ($class eq "COP") { |
|
|
571 | $insn->{bblock}++ if defined $op->label; |
|
|
572 | |
|
|
573 | } else { |
|
|
574 | if ($name eq "pushmark") { |
|
|
575 | $numpushmark++; |
|
|
576 | } |
| 112 | } |
577 | } |
| 113 | } |
578 | } |
| 114 | } |
579 | } |
| 115 | |
580 | |
|
|
581 | $_->{bblock}++ for grep $op_target{${$_->{op}}}, @ops; |
|
|
582 | |
| 116 | local $source; |
583 | local $source = <<EOF; |
|
|
584 | OP *%%%FUNC%%% (pTHX) |
|
|
585 | { |
|
|
586 | register OP *nextop = (OP *)${$ops[0]->{op}}L; |
|
|
587 | EOF |
| 117 | |
588 | |
| 118 | $source = "typedef OP *(*PPFUNC)(pTHX);\n\n"; |
589 | $source .= " faster_PUSHMARK_PREALLOC ($numpushmark);\n" |
| 119 | |
590 | if $numpushmark; |
| 120 | $source .= "OP *func (pTHX)\n{\n"; |
|
|
| 121 | |
591 | |
| 122 | for my $op (@ops) { |
592 | while (@ops) { |
|
|
593 | $insn = shift @ops; |
|
|
594 | |
|
|
595 | $op = $insn->{op}; |
| 123 | my $name = $op->name; |
596 | $op_name = $op->name; |
| 124 | my $ppaddr = ppaddr $op->type; |
|
|
| 125 | |
597 | |
|
|
598 | my $class = B::class $op; |
|
|
599 | |
|
|
600 | $source .= "\n/* start basic block */\n" if exists $insn->{bblock};#d# |
| 126 | $source .= "op_$$op: /* $name */\n"; |
601 | $source .= "op_$$op: /* $op_name */\n"; |
|
|
602 | #$source .= "fprintf (stderr, \"$$op in op $op_name\\n\");\n";#d# |
|
|
603 | #$source .= "{ dSP; sv_dump (TOPs); }\n";#d# |
| 127 | |
604 | |
|
|
605 | $source .= " PERL_ASYNC_CHECK ();\n" |
|
|
606 | unless exists $f_noasync{$op_name}; |
|
|
607 | |
| 128 | if (my $can = __PACKAGE__->can ("op_$name")) { |
608 | if (my $can = __PACKAGE__->can ("op_$op_name")) { |
|
|
609 | # handcrafted replacement |
|
|
610 | |
|
|
611 | if ($insn->{extend} > 0) { |
|
|
612 | # coalesce EXTENDs |
|
|
613 | # TODO: properly take negative preceeding and following EXTENDs into account |
|
|
614 | for my $i (@ops) { |
|
|
615 | last if exists $i->{bblock}; |
|
|
616 | last unless exists $i->{extend}; |
|
|
617 | my $extend = delete $i->{extend}; |
|
|
618 | $insn->{extend} += $extend if $extend > 0; |
|
|
619 | } |
|
|
620 | |
|
|
621 | $source .= " { dSP; EXTEND (SP, $insn->{extend}); PUTBACK; }\n" |
|
|
622 | if $insn->{extend} > 0; |
|
|
623 | } |
|
|
624 | |
| 129 | $can->($op); |
625 | $can->($op); |
| 130 | } elsif ("LOGOP" eq B::class $op or exists $flag{otherop}{$name}) { |
626 | |
| 131 | $source .= " PL_op = ((PPFUNC)${ppaddr}L)(aTHX);\n"; |
|
|
| 132 | $source .= " if (PL_op == (OP *)${$op->other}L) goto op_${$op->other};\n"; |
|
|
| 133 | $source .= " goto op_${$op->next};\n"; |
|
|
| 134 | } elsif (exists $flag{unsafe}{$name}) { |
627 | } elsif (exists $f_unsafe{$op_name}) { |
| 135 | $source .= " return ((PPFUNC)${ppaddr}L)(aTHX);\n"; |
628 | # unsafe, return to interpreter |
|
|
629 | assert "nextop == (OP *)$$op"; |
|
|
630 | $source .= " return nextop;\n"; |
|
|
631 | |
|
|
632 | } elsif ("LOGOP" eq $class) { |
|
|
633 | # logical operation with optional branch |
|
|
634 | out_callop; |
|
|
635 | out_cond_jump $op->other; |
|
|
636 | out_jump_next; |
|
|
637 | |
|
|
638 | } elsif ("PMOP" eq $class) { |
|
|
639 | # regex-thingy |
|
|
640 | out_callop; |
|
|
641 | out_cond_jump $op->pmreplroot if $op_name ne "pushre" && ${$op->pmreplroot}; |
|
|
642 | out_jump_next; |
|
|
643 | |
| 136 | } else { |
644 | } else { |
| 137 | $source .= " PL_op = ((PPFUNC)${ppaddr}L)(aTHX);\n"; |
645 | # normal operator, linear execution |
| 138 | $source .= " goto op_${$op->next};\n"; |
646 | out_linear; |
|
|
647 | } |
|
|
648 | } |
|
|
649 | |
|
|
650 | $op_name = "func exit"; assert (0); |
|
|
651 | |
|
|
652 | $source .= <<EOF; |
|
|
653 | op_0: |
|
|
654 | return 0; |
|
|
655 | } |
|
|
656 | EOF |
|
|
657 | #warn $source; |
|
|
658 | |
|
|
659 | $source |
|
|
660 | } |
|
|
661 | |
|
|
662 | my $uid = "aaaaaaa0"; |
|
|
663 | my %so; |
|
|
664 | |
|
|
665 | sub func2ptr { |
|
|
666 | my (@func) = @_; |
|
|
667 | |
|
|
668 | #LOCK |
|
|
669 | mkdir $CACHEDIR, 0777; |
|
|
670 | sysopen my $meta_fh, "$CACHEDIR/meta", &Fcntl::O_RDWR | &Fcntl::O_CREAT, 0666 |
|
|
671 | or die "$$CACHEDIR/meta: $!"; |
|
|
672 | binmode $meta_fh, ":raw:perlio"; |
|
|
673 | fcntl_lock fileno $meta_fh |
|
|
674 | or die "$CACHEDIR/meta: $!"; |
|
|
675 | |
|
|
676 | my $meta = eval { Storable::fd_retrieve $meta_fh } || { version => 1 }; |
|
|
677 | |
|
|
678 | for my $f (@func) { |
|
|
679 | $f->{func} = "F" . Digest::MD5::md5_hex ($f->{source}); |
|
|
680 | $f->{so} = $meta->{$f->{func}}; |
|
|
681 | } |
|
|
682 | |
|
|
683 | if (grep !$_->{so}, @func) { |
|
|
684 | my $stem; |
| 139 | } |
685 | |
| 140 | } |
686 | do { |
|
|
687 | $stem = "$CACHEDIR/$$-" . $uid++; |
|
|
688 | } while -e "$stem$_so"; |
| 141 | |
689 | |
| 142 | $source .= "}\n"; |
690 | open my $fh, ">:raw", "$stem.c"; |
| 143 | |
|
|
| 144 | print <<EOF; |
691 | print $fh <<EOF; |
|
|
692 | #define PERL_NO_GET_CONTEXT |
|
|
693 | #define PERL_CORE |
|
|
694 | |
|
|
695 | #include <assert.h> |
|
|
696 | |
| 145 | #include "EXTERN.h" |
697 | #include "EXTERN.h" |
| 146 | #include "perl.h" |
698 | #include "perl.h" |
| 147 | #include "XSUB.h" |
699 | #include "XSUB.h" |
|
|
700 | |
|
|
701 | #if 1 |
|
|
702 | # define faster_PUSHMARK_PREALLOC(count) while (PL_markstack_ptr + (count) >= PL_markstack_max) markstack_grow () |
|
|
703 | # define faster_PUSHMARK(p) *++PL_markstack_ptr = (p) - PL_stack_base |
|
|
704 | #else |
|
|
705 | # define faster_PUSHMARK_PREALLOC(count) 1 |
|
|
706 | # define faster_PUSHMARK(p) PUSHMARK(p) |
|
|
707 | #endif |
|
|
708 | |
|
|
709 | #define RUNOPS_TILL(op) \\ |
|
|
710 | while (nextop != (op)) \\ |
|
|
711 | { \\ |
|
|
712 | PERL_ASYNC_CHECK (); \\ |
|
|
713 | PL_op = nextop; nextop = (PL_op->op_ppaddr)(aTHX); \\ |
|
|
714 | } |
|
|
715 | |
| 148 | EOF |
716 | EOF |
|
|
717 | for my $f (grep !$_->{so}, @func) { |
|
|
718 | next if $f->{so} = $meta->{$f->{func}}; # some cv's alias others |
|
|
719 | |
|
|
720 | warn "compiling $f->{name} to $stem$_so:$f->{func}\n" if $verbose > 1; |
|
|
721 | my $source = $f->{source}; |
|
|
722 | $source =~ s/%%%FUNC%%%/$f->{func}/g; |
| 149 | print $source; |
723 | print $fh $source; |
|
|
724 | $meta->{$f->{func}} = $f->{so} = $stem; |
|
|
725 | } |
|
|
726 | |
|
|
727 | close $fh; |
|
|
728 | system "$COMPILE -o $stem$_o $stem.c"; |
|
|
729 | unlink "$stem.c" unless $ENV{FASTER_DEBUG} > 0; |
|
|
730 | system "$LINK -o $stem$_so $stem$_o $LIBS"; |
|
|
731 | unlink "$stem$_o"; |
|
|
732 | } |
|
|
733 | |
|
|
734 | for my $f (@func) { |
|
|
735 | my $stem = $f->{so}; |
|
|
736 | |
|
|
737 | my $so = ($so{$stem} ||= DynaLoader::dl_load_file "$stem$_so") |
|
|
738 | or die "$stem$_so: $!"; |
|
|
739 | |
|
|
740 | #unlink "$stem$_so"; |
|
|
741 | |
|
|
742 | $f->{ptr} = DynaLoader::dl_find_symbol $so, $f->{func} |
|
|
743 | or die "$f->{func} not found in $stem$_so: $!"; |
|
|
744 | } |
|
|
745 | |
|
|
746 | seek $meta_fh, 0, 0 or die "$CACHEDIR/meta: $!"; |
|
|
747 | Storable::nstore_fd $meta, $meta_fh; |
|
|
748 | truncate $meta_fh, tell $meta_fh; |
|
|
749 | |
|
|
750 | # UNLOCK (by closing $meta_fh) |
|
|
751 | } |
|
|
752 | |
|
|
753 | my %ignore; |
|
|
754 | |
|
|
755 | sub entersub { |
|
|
756 | my ($cv) = @_; |
|
|
757 | |
|
|
758 | my $pkg = $cv->STASH->NAME; |
|
|
759 | |
|
|
760 | return if $ignore{$pkg}; |
|
|
761 | |
|
|
762 | warn "optimising ", $cv->STASH->NAME, "\n" |
|
|
763 | if $verbose; |
|
|
764 | |
|
|
765 | eval { |
|
|
766 | my @func; |
|
|
767 | |
|
|
768 | push @func, { |
|
|
769 | cv => $cv, |
|
|
770 | name => "<>", |
|
|
771 | source => cv2c $cv, |
|
|
772 | }; |
|
|
773 | |
|
|
774 | # always compile the whole stash |
|
|
775 | my %stash = $cv->STASH->ARRAY; |
|
|
776 | while (my ($k, $v) = each %stash) { |
|
|
777 | $v->isa (B::GV::) |
|
|
778 | or next; |
|
|
779 | |
|
|
780 | my $cv = $v->CV; |
|
|
781 | |
|
|
782 | if ($cv->isa (B::CV::) |
|
|
783 | && ${$cv->START} |
|
|
784 | && $cv->START->name ne "null") { |
|
|
785 | |
|
|
786 | push @func, { |
|
|
787 | cv => $cv, |
|
|
788 | name => $k, |
|
|
789 | source => cv2c $cv, |
|
|
790 | }; |
|
|
791 | } |
|
|
792 | } |
|
|
793 | |
|
|
794 | func2ptr @func; |
|
|
795 | |
|
|
796 | for my $f (@func) { |
|
|
797 | patch_cv $f->{cv}, $f->{ptr}; |
|
|
798 | } |
|
|
799 | }; |
|
|
800 | |
|
|
801 | if ($@) { |
|
|
802 | $ignore{$pkg}++; |
|
|
803 | warn $@; |
|
|
804 | } |
| 150 | } |
805 | } |
| 151 | |
806 | |
| 152 | hook_entersub; |
807 | hook_entersub; |
| 153 | |
808 | |
| 154 | 1; |
809 | 1; |
| 155 | |
810 | |
| 156 | =back |
811 | =back |
| 157 | |
812 | |
|
|
813 | =head1 ENVIRONMENT VARIABLES |
|
|
814 | |
|
|
815 | The following environment variables influence the behaviour of Faster: |
|
|
816 | |
|
|
817 | =over 4 |
|
|
818 | |
|
|
819 | =item FASTER_VERBOSE |
|
|
820 | |
|
|
821 | Faster will output more informational messages when set to values higher |
|
|
822 | than C<0>. Currently, C<1> outputs which packages are being compiled, C<3> |
|
|
823 | outputs the cache directory and C<10> outputs information on which perl |
|
|
824 | function is compiled into which shared object. |
|
|
825 | |
|
|
826 | =item FASTER_DEBUG |
|
|
827 | |
|
|
828 | Add debugging code when set to values higher than C<0>. Currently, this |
|
|
829 | adds 1-3 C<assert>'s per perl op (FASTER_DEBUG > 1), to ensure that opcode |
|
|
830 | order and C execution order are compatible. |
|
|
831 | |
|
|
832 | =item FASTER_CACHE |
|
|
833 | |
|
|
834 | Set a persistent cache directory that caches compiled code fragments. The |
|
|
835 | default is C<$HOME/.perl-faster-cache> if C<HOME> is set and a temporary |
|
|
836 | directory otherwise. |
|
|
837 | |
|
|
838 | This directory will always grow in size, so you might need to erase it |
|
|
839 | from time to time. |
|
|
840 | |
|
|
841 | =back |
|
|
842 | |
| 158 | =head1 LIMITATIONS |
843 | =head1 BUGS/LIMITATIONS |
| 159 | |
844 | |
| 160 | Tainting and debugging will disable Faster. |
845 | Perl will check much less often for asynchronous signals in |
|
|
846 | Faster-compiled code. It tries to check on every function call, loop |
|
|
847 | iteration and every I/O operator, though. |
|
|
848 | |
|
|
849 | The following things will disable Faster. If you manage to enable them at |
|
|
850 | runtime, bad things will happen. Enabling them at startup will be fine, |
|
|
851 | though. |
|
|
852 | |
|
|
853 | enabled tainting |
|
|
854 | enabled debugging |
|
|
855 | |
|
|
856 | Thread-enabled builds of perl will dramatically reduce Faster's |
|
|
857 | performance, but you don't care about speed if you enable threads anyway. |
|
|
858 | |
|
|
859 | These constructs will force the use of the interpreter for the currently |
|
|
860 | executed function as soon as they are being encountered during execution. |
|
|
861 | |
|
|
862 | goto |
|
|
863 | next, redo (but not well-behaved last's) |
|
|
864 | eval |
|
|
865 | require |
|
|
866 | any use of formats |
|
|
867 | .., ... (flipflop operators) |
| 161 | |
868 | |
| 162 | =head1 AUTHOR |
869 | =head1 AUTHOR |
| 163 | |
870 | |
| 164 | Marc Lehmann <schmorp@schmorp.de> |
871 | Marc Lehmann <schmorp@schmorp.de> |
| 165 | http://home.schmorp.de/ |
872 | http://home.schmorp.de/ |
