src/trace.h

   1 /*
   2  * Copyright (C) the libgit2 contributors. All rights reserved.
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #ifndef INCLUDE_trace_h__
   8 #define INCLUDE_trace_h__
   9
  10 #include "common.h"
  11
  12 #include <git2/trace.h>
  13 #include "str.h"
  14
  15 struct git_trace_data {
  16         git_trace_level_t level;
  17         git_trace_cb callback;
  18 };
  19
  20 extern struct git_trace_data git_trace__data;
  21
  22 GIT_INLINE(void) git_trace__write_fmt(
  23         git_trace_level_t level,
  24         const char *fmt,
  25         va_list ap)
  26 {
  27         git_trace_cb callback = git_trace__data.callback;
  28         git_str message = GIT_STR_INIT;
  29
  30         git_str_vprintf(&message, fmt, ap);
  31
  32         callback(level, git_str_cstr(&message));
  33
  34         git_str_dispose(&message);
  35 }
  36
  37 #define git_trace_level()       (git_trace__data.level)
  38
  39 GIT_INLINE(void) git_trace(git_trace_level_t level, const char *fmt, ...)
  40 {
  41         if (git_trace__data.level >= level &&
  42             git_trace__data.callback != NULL) {
  43                 va_list ap;
  44
  45                 va_start(ap, fmt);
  46                 git_trace__write_fmt(level, fmt, ap);
  47                 va_end(ap);
  48         }
  49 }
  50
  51 #endif