From: Fabian Klötzl <fabian@kloetzl.info>
Date: Wed, 21 Nov 2018 11:20:12 +0000 (+0100)
Subject: improve parsing performance
X-Git-Url: http://www.kaiwu.me/sitemap.xml?a=commitdiff_plain;h=fb82ee09a7963f74898c62091f5bce9cc1b1c388;p=klib.git

improve parsing performance

Doubles throughput; can now parse FASTA at 2GB/s.
---

diff --git a/kseq.h b/kseq.h
index 2f94a64..99c9ea2 100644
--- a/kseq.h
+++ b/kseq.h
@@ -108,8 +108,8 @@ typedef struct __kstring_t {
 				} else break;											\
 			}															\
 			if (delimiter == KS_SEP_LINE) { \
-				for (i = ks->begin; i < ks->end; ++i) \
-					if (ks->buf[i] == '\n') break; \
+				unsigned char *sep = memchr(ks->buf + ks->begin, '\n', ks->end - ks->begin); \
+				i = sep != NULL ? sep - ks->buf : ks->end;				\
 			} else if (delimiter > KS_SEP_MAX) {						\
 				for (i = ks->begin; i < ks->end; ++i)					\
 					if (ks->buf[i] == delimiter) break;					\