X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fcommon.h;h=29590ff26e64d3e8527e14d67c572f80fd085a99;hb=d437681a04278fa6292338b4959231f825652785;hp=317be8d1579d063cc23338e229abcdede533da84;hpb=10b92353ea2ccf66eabad273799c36225d2efc3f;p=collectd.git

diff --git a/src/common.h b/src/common.h
index 317be8d1..29590ff2 100644
--- a/src/common.h
+++ b/src/common.h
@@ -1,6 +1,6 @@
 /**
  * collectd - src/common.h
- * Copyright (C) 2005-2010  Florian octo Forster
+ * Copyright (C) 2005-2014  Florian octo Forster
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -55,6 +55,13 @@ struct rate_to_value_state_s
 };
 typedef struct rate_to_value_state_s rate_to_value_state_t;
 
+struct value_to_rate_state_s
+{
+  value_t last_value;
+  cdtime_t last_time;
+};
+typedef struct value_to_rate_state_s value_to_rate_state_t;
+
 char *sstrncpy (char *dest, const char *src, size_t n);
 
 __attribute__ ((format(printf,3,4)))
@@ -158,19 +165,21 @@ int strjoin (char *dst, size_t dst_len, char **fields, size_t fields_num, const
  *   escape_slashes
  *
  * DESCRIPTION
- *   Removes slashes from the string `buf' and substitutes them with something
- *   appropriate. This function should be used whenever a path is to be used as
- *   (part of) an instance.
+ *   Removes slashes ("/") from "buffer". If buffer contains a single slash,
+ *   the result will be "root". Leading slashes are removed. All other slashes
+ *   are replaced with underscores ("_").
+ *   This function is used by plugin_dispatch_values() to escape all parts of
+ *   the identifier.
  *
  * PARAMETERS
- *   `buf'         String to be escaped.
- *   `buf_len'     Length of the buffer. No more then this many bytes will be
- *   written to `buf', including the trailing null-byte.
+ *   `buffer'         String to be escaped.
+ *   `buffer_size'    Size of the buffer. No more then this many bytes will be
+ *                    written to `buffer', including the trailing null-byte.
  *
  * RETURN VALUE
  *   Returns zero upon success and a value smaller than zero upon failure.
  */
-int escape_slashes (char *buf, int buf_len);
+int escape_slashes (char *buffer, size_t buffer_size);
 
 /*
  * NAME
@@ -322,6 +331,9 @@ counter_t counter_diff (counter_t old_value, counter_t new_value);
 int rate_to_value (value_t *ret_value, gauge_t rate,
 		rate_to_value_state_t *state, int ds_type, cdtime_t t);
 
+int value_to_rate (value_t *ret_rate, derive_t value,
+		value_to_rate_state_t *state, int ds_type, cdtime_t t);
+
 /* Converts a service name (a string) to a port number
  * (in the range [1-65535]). Returns less than zero on error. */
 int service_name_to_port_number (const char *service_name);