compress: Overhaul the meaning of --aggressiveness.

[paraslash.git] / daemon.c

diff --git a/daemon.c b/daemon.c
index ddfe680cebc63dc1c7af89fde333c665873765eb..bfa81487430f62dc7417db6ba6e0c6d53c008051 100644 (file)
--- a/daemon.c
+++ b/daemon.c
@@ -31,6 +31,12 @@ struct daemon {
        /** Used for colored log messages. */
        char log_colors[NUM_LOGLEVELS][COLOR_MAXLEN];
        char *old_cwd;
+       /*
+        * If these pointers are non-NULL, the functions are called from
+        * daemon_log() before and after writing each log message.
+        */
+       void (*pre_log_hook)(void);
+       void (*post_log_hook)(void);
 };
 
 static struct daemon the_daemon, *me = &the_daemon;
@@ -140,6 +146,12 @@ void daemon_set_loglevel(const char *loglevel)
        me->loglevel = ret;
 }
 
+void daemon_set_hooks(void (*pre_log_hook)(void), void (*post_log_hook)(void))
+{
+       me->pre_log_hook = pre_log_hook;
+       me->post_log_hook = post_log_hook;
+}
+
 /**
  * Set one of the daemon config flags.
  *
@@ -409,6 +421,8 @@ __printf_2_3 void daemon_log(int ll, const char* fmt,...)
                return;
 
        fp = me->logfile? me->logfile : stderr;
+       if (me->pre_log_hook)
+               me->pre_log_hook();
        color = daemon_test_flag(DF_COLOR_LOG)? me->log_colors[ll] : NULL;
        if (color)
                fprintf(fp, "%s", color);
@@ -441,4 +455,6 @@ __printf_2_3 void daemon_log(int ll, const char* fmt,...)
        va_end(argp);
        if (color)
                fprintf(fp, "%s", COLOR_RESET);
+       if (me->post_log_hook)
+               me->post_log_hook();
 }