From: Florian Ragwitz Date: Tue, 23 Aug 2011 14:19:55 +0000 (+0200) Subject: Increase the default linestr size to avoid reallocations X-Git-Tag: 0.006006~1 X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=e8df925b7b1cc2f985d132b3f15059b981c5d1b7;p=p5sagit%2FDevel-Declare.git Increase the default linestr size to avoid reallocations --- diff --git a/Declare.xs b/Declare.xs index 2c715e2..be70d82 100644 --- a/Declare.xs +++ b/Declare.xs @@ -31,6 +31,10 @@ static int dd_debug = 0; #define LEX_NORMAL 10 #define LEX_INTERPNORMAL 9 +/* please try not to have a line longer than this :) */ + +#define DD_PREFERRED_LINESTR_SIZE 16384 + /* flag to trigger removal of temporary declaree sub */ static int in_declare = 0; @@ -229,8 +233,12 @@ int dd_toke_scan_str(pTHX_ int offset) { } int dd_toke_skipspace(pTHX_ int offset) { + char* old_pvx = SvPVX(PL_linestr); char* base_s = SvPVX(PL_linestr) + offset; char* s = skipspace_force(base_s); + if(SvPVX(PL_linestr) != old_pvx) + croak("PL_linestr reallocated during skipspace, " + "Devel::Declare can't continue"); return s - base_s; } @@ -329,8 +337,8 @@ STATIC OP *dd_ck_rv2cv(pTHX_ OP *o, void *user_data) { static void dd_block_start(pTHX_ int full) { PERL_UNUSED_VAR(full); - if (SvLEN(PL_linestr) < 8192) - (void) lex_grow_linestr(8192); + if (SvLEN(PL_linestr) < DD_PREFERRED_LINESTR_SIZE) + (void) lex_grow_linestr(DD_PREFERRED_LINESTR_SIZE); } #else /* !DD_GROW_VIA_BLOCKHOOK */ @@ -360,7 +368,7 @@ OP* dd_pp_entereval(pTHX) { sv = sv_2mortal(newSVsv(sv)); sv_catpvn(sv, "\n;", 2); } - SvGROW(sv, 8192); + SvGROW(sv, DD_PREFERRED_LINESTR_SIZE); } PUSHs(sv); #ifdef PERL_5_9_PLUS @@ -384,7 +392,7 @@ STATIC OP *dd_ck_entereval(pTHX_ OP *o, void *user_data) { static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen) { const I32 count = FILTER_READ(idx+1, sv, maxlen); - SvGROW(sv, 8192); /* please try not to have a line longer than this :) */ + SvGROW(sv, DD_PREFERRED_LINESTR_SIZE); /* filter_del(dd_filter_realloc); */ return count; } diff --git a/t/block_size.t b/t/block_size.t new file mode 100644 index 0000000..24b630f --- /dev/null +++ b/t/block_size.t @@ -0,0 +1,449 @@ +use strict; +use warnings; +use Test::More tests => 3; + +sub handle_fun { + my $pack = shift; + my $linestr = Devel::Declare::get_linestr(); + my $pos = length($linestr); + Devel::Declare::toke_skipspace(length($linestr)); + Devel::Declare::set_linestr($linestr); +} + +use Devel::Declare; +sub fun($) {} +BEGIN { + Devel::Declare->setup_for( + __PACKAGE__, + { fun => { const => \&handle_fun } } + ); +} + + +fun 1; +ok 0; this line is deleted by handler +; +ok 1; + +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next 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comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# min + +# pos 8192 occurs between these two lines +fun 1; +ok 0; this line is deleted by handler +; +ok 1; + +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out 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comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless co + +# pos 16384 occurs between these two lines +fun 1; +ok 0; this line is deleted by handler +; +ok 1; + +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary 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pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to 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mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to 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mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary +# mindless comment lines to pad out the test program to the next block boundary + +# file size slightly exceeds 32768 + +1;