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Date: Fri, 7 Apr 2017 12:04:04 -0300 From: Arnaldo Carvalho de Melo <acme@...nel.org> To: Taeung Song <treeze.taeung@...il.com> Cc: linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Wang Nan <wangnan0@...wei.com>, Masami Hiramatsu <mhiramat@...nel.org> Subject: Re: [PATCH 1/5] perf annotate: Refactor the code to parse disassemble lines with {l,r}trim() Em Fri, Apr 07, 2017 at 11:24:17PM +0900, Taeung Song escreveu: > When parsing disassemble lines, > use ltrim() and rtrim() to strip them, > not using just while loop and isspace(). > > Cc: Jiri Olsa <jolsa@...nel.org> > Cc: Namhyung Kim <namhyung@...nel.org> > Signed-off-by: Taeung Song <treeze.taeung@...il.com> > --- > tools/perf/util/annotate.c | 49 ++++++++++------------------------------------ > 1 file changed, 10 insertions(+), 39 deletions(-) > > diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c > index a37032b..1b4f17b 100644 > --- a/tools/perf/util/annotate.c > +++ b/tools/perf/util/annotate.c > @@ -379,9 +379,7 @@ static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *m > if (comment == NULL) > return 0; > > - while (comment[0] != '\0' && isspace(comment[0])) > - ++comment; > - > + comment = ltrim(comment); > comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name); > comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); > > @@ -426,9 +424,7 @@ static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops > if (comment == NULL) > return 0; > > - while (comment[0] != '\0' && isspace(comment[0])) > - ++comment; > - > + comment = ltrim(comment); > comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); > > return 0; > @@ -777,10 +773,7 @@ static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, str > > static int disasm_line__parse(char *line, const char **namep, char **rawp) > { > - char *name = line, tmp; > - > - while (isspace(name[0])) > - ++name; > + char tmp, *name = ltrim(line); > > if (name[0] == '\0') > return -1; > @@ -798,12 +791,7 @@ static int disasm_line__parse(char *line, const char **namep, char **rawp) > goto out_free_name; > > (*rawp)[0] = tmp; > - > - if ((*rawp)[0] != '\0') { > - (*rawp)++; > - while (isspace((*rawp)[0])) > - ++(*rawp); > - } > + *rawp = ltrim(*rawp); > > return 0; > > @@ -1148,9 +1136,9 @@ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, > { > struct annotation *notes = symbol__annotation(sym); > struct disasm_line *dl; > - char *line = NULL, *parsed_line, *tmp, *tmp2, *c; > + char *line = NULL, *parsed_line, *tmp, *tmp2; > size_t line_len; > - s64 line_ip, offset = -1; > + s64 line_ip = -1, offset = -1; > regmatch_t match[2]; > > if (getline(&line, &line_len, file) < 0) > @@ -1159,32 +1147,15 @@ static int symbol__parse_objdump_line(struct symbol *sym, struct map *map, > if (!line) > return -1; > > - while (line_len != 0 && isspace(line[line_len - 1])) > - line[--line_len] = '\0'; > - > - c = strchr(line, '\n'); > - if (c) > - *c = 0; > - > - line_ip = -1; > - parsed_line = line; > + parsed_line = rtrim(line); > > /* /filename:linenr ? Save line number and ignore. */ > - if (regexec(&file_lineno, line, 2, match, 0) == 0) { > - *line_nr = atoi(line + match[1].rm_so); > + if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) { > + *line_nr = atoi(parsed_line + match[1].rm_so); Both should be the same, so this is further noise in the patch, please refrain from doing extra things in a patch. If you feel this is really needed, do it in _another_ patch, with proper explanation. This is a trivial case, but you need to be consistent, avoiding to lump together unrelated stuff in the same patch. > return 0; > } > > - /* > - * Strip leading spaces: > - */ > - tmp = line; > - while (*tmp) { > - if (*tmp != ' ') > - break; > - tmp++; > - } > - > + tmp = ltrim(parsed_line); > if (*tmp) { > /* > * Parse hexa addresses followed by ':' > -- > 2.7.4
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