3 Commits

Author	SHA1	Message	Date
Ingo Oeser	5b92028155	html: speed up UnescapeString ... Add benchmarks for for sparsely escaped and densely escaped strings. Then speed up the sparse unescaping part heavily by using IndexByte and copy to skip the parts containing no escaping very fast. Unescaping densely escaped strings slower because of the new function call overhead. But sparsely encoded strings are seen more often in the utf8 enabled web. We win part of the speed back by looking up entityName differently. benchmark old ns/op new ns/op delta BenchmarkEscape 31680 31396 -0.90% BenchmarkEscapeNone 6507 6872 +5.61% BenchmarkUnescape 36481 48298 +32.39% BenchmarkUnescapeNone 332 325 -2.11% BenchmarkUnescapeSparse 8836 3221 -63.55% BenchmarkUnescapeDense 30639 32224 +5.17% Change-Id: If606cb01897a40eefe35ba98f2ff23bb25251606 Reviewed-on: https://go-review.googlesource.com/10172 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>	2015-08-22 12:45:38 +00:00
Didier Spezia	2d9a50b97f	html: simplify and optimize escape/unescape ... The html package uses some specific code to escape special characters. Actually, the strings.Replacer can be used instead, and is much more efficient. The converse operation is more complex but can still be slightly optimized. Credits to Ken Bloom (kabloom@google.com), who first submitted a similar patch at https://codereview.appspot.com/141930043 Added benchmarks and slightly optimized UnescapeString. benchmark old ns/op new ns/op delta BenchmarkEscape-4 118713 19825 -83.30% BenchmarkEscapeNone-4 87653 3784 -95.68% BenchmarkUnescape-4 24888 23417 -5.91% BenchmarkUnescapeNone-4 14423 157 -98.91% benchmark old allocs new allocs delta BenchmarkEscape-4 9 2 -77.78% BenchmarkEscapeNone-4 0 0 +0.00% BenchmarkUnescape-4 2 2 +0.00% BenchmarkUnescapeNone-4 0 0 +0.00% benchmark old bytes new bytes delta BenchmarkEscape-4 24800 12288 -50.45% BenchmarkEscapeNone-4 0 0 +0.00% BenchmarkUnescape-4 10240 10240 +0.00% BenchmarkUnescapeNone-4 0 0 +0.00% Fixes #8697 Change-Id: I208261ed7cbe9b3dee6317851f8c0cf15528bce4 Reviewed-on: https://go-review.googlesource.com/9808 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>	2015-05-08 19:10:10 +00:00
Russ Cox	c007ce824d	build: move package sources from src/pkg to src ... Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.	2014-09-08 00:08:51 -04:00