trace2: trim whitespace in region messages in perf target format

Avoid unecessary trailing whitespace in "region_enter" and "region_leave" messages in perf target format. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff Hostetler committed Aug 8, 2019 at 07:19 UTC da4589ce7ecb84b51b2819542f9555848dccf726
1 file changed +10 -4
trace2/tr2_tgt_perf.c
+10 -4
@@ -452,8 +452,11 @@ static void fn_region_enter_printf_va_fl(const char *file, int line,
452 struct strbuf buf_payload = STRBUF_INIT;
453
454 if (label)
455 - strbuf_addf(&buf_payload, "label:%s ", label);
456 - maybe_append_string_va(&buf_payload, fmt, ap);
455 + strbuf_addf(&buf_payload, "label:%s", label);
456 + if (fmt && *fmt) {
457 + strbuf_addch(&buf_payload, ' ');
458 + maybe_append_string_va(&buf_payload, fmt, ap);
459 + }
460
461 perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
462 NULL, category, &buf_payload);
@@ -469,8 +472,11 @@ static void fn_region_leave_printf_va_fl(
472 struct strbuf buf_payload = STRBUF_INIT;
473
474 if (label)
472 - strbuf_addf(&buf_payload, "label:%s ", label);
473 - maybe_append_string_va(&buf_payload, fmt, ap);
475 + strbuf_addf(&buf_payload, "label:%s", label);
476 + if (fmt && *fmt) {
477 + strbuf_addch(&buf_payload, ' ' );
478 + maybe_append_string_va(&buf_payload, fmt, ap);
479 + }
480
481 perf_io_write_fl(file, line, event_name, repo, &us_elapsed_absolute,
482 &us_elapsed_region, category, &buf_payload);