Mercurial > hg > nginx
diff src/http/modules/ngx_http_log_module.c @ 3275:b344b68da8c5
optimize some cycles:
*) delete surplus variable;
*) on i386/amd64 "while (n) / n--" is smaller than "while (n--)",
because the platforms have no postfix operations
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 02 Nov 2009 17:12:09 +0000 |
parents | 204ea173234f |
children | bfe37ab335b5 |
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--- a/src/http/modules/ngx_http_log_module.c +++ b/src/http/modules/ngx_http_log_module.c @@ -650,7 +650,7 @@ ngx_http_log_variable(ngx_http_request_t static uintptr_t ngx_http_log_escape(u_char *dst, u_char *src, size_t size) { - ngx_uint_t i, n; + ngx_uint_t n; static u_char hex[] = "0123456789ABCDEF"; static uint32_t escape[] = { @@ -678,17 +678,18 @@ ngx_http_log_escape(u_char *dst, u_char n = 0; - for (i = 0; i < size; i++) { + while (size) { if (escape[*src >> 5] & (1 << (*src & 0x1f))) { n++; } src++; + size--; } return (uintptr_t) n; } - for (i = 0; i < size; i++) { + while (size) { if (escape[*src >> 5] & (1 << (*src & 0x1f))) { *dst++ = '\\'; *dst++ = 'x'; @@ -699,6 +700,7 @@ ngx_http_log_escape(u_char *dst, u_char } else { *dst++ = *src++; } + size--; } return (uintptr_t) dst;