trace: add trace_strbuf

If you happen to have a strbuf, it is a little more readable
and a little more efficient to be able to print it directly
instead of jamming it through the trace_printf interface.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/cache.h b/cache.h
index 211d7bb26ec2499bb5f2a5733b61e0963f17b1fb..3978112f55e258bf67fef16dcbed2dd49feb4552 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -1072,6 +1072,7 @@ __attribute__((format (printf, 2, 3)))
 extern void trace_argv_printf(const char **argv, const char *format, ...);
 extern void trace_repo_setup(const char *prefix);
 extern int trace_want(const char *key);
+extern void trace_strbuf(const char *key, const struct strbuf *buf);
 
 /* convert.c */
 /* returns 1 if *dst was used */

diff --git a/trace.c b/trace.c
index ca0ab0448bd3981e740e99e14935670cae729ede..9f39eab025248511449a2dc6921578510e8429b4 100644 (file)
--- a/trace.c
+++ b/trace.c
@@ -65,19 +65,14 @@ static const char err_msg[] = "Could not trace into fd given by "
 void trace_vprintf(const char *key, const char *fmt, va_list ap)
 {
        struct strbuf buf = STRBUF_INIT;
-       int fd, need_close = 0;
 
-       fd = get_trace_fd(key, &need_close);
-       if (!fd)
+       if (!trace_want(key))
                return;
 
        set_try_to_free_routine(NULL);  /* is never reset */
        strbuf_vaddf(&buf, fmt, ap);
-       write_or_whine_pipe(fd, buf.buf, buf.len, err_msg);
+       trace_strbuf(key, &buf);
        strbuf_release(&buf);
-
-       if (need_close)
-               close(fd);
 }
 
 void trace_printf_key(const char *key, const char *fmt, ...)
@@ -96,6 +91,20 @@ void trace_printf(const char *fmt, ...)
        va_end(ap);
 }
 
+void trace_strbuf(const char *key, const struct strbuf *buf)
+{
+       int fd, need_close = 0;
+
+       fd = get_trace_fd(key, &need_close);
+       if (!fd)
+               return;
+
+       write_or_whine_pipe(fd, buf->buf, buf->len, err_msg);
+
+       if (need_close)
+               close(fd);
+}
+
 void trace_argv_printf(const char **argv, const char *fmt, ...)
 {
        struct strbuf buf = STRBUF_INIT;