X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Frrd.h;h=bdcc720886edf2b9b4b8d8fd903843886b6f947f;hb=298b318acaf1147474ab9e97cac37c3608660efd;hp=8172c7f53eb5b8b773292ed82e9fa09f89158ed5;hpb=23be36896d8cf89dd9dbcdb2bb62677ca01810f8;p=rrdtool.git

diff --git a/src/rrd.h b/src/rrd.h
index 8172c7f..bdcc720 100644
--- a/src/rrd.h
+++ b/src/rrd.h
@@ -5,6 +5,19 @@
  *****************************************************************************
  * $Id$
  * $Log$
+ * Revision 1.3  2003/02/13 07:05:27  oetiker
+ * Find attached the patch I promised to send to you. Please note that there
+ * are three new source files (src/rrd_is_thread_safe.h, src/rrd_thread_safe.c
+ * and src/rrd_not_thread_safe.c) and the introduction of librrd_th. This
+ * library is identical to librrd, but it contains support code for per-thread
+ * global variables currently used for error information only. This is similar
+ * to how errno per-thread variables are implemented.  librrd_th must be linked
+ * alongside of libpthred
+ *
+ * There is also a new file "THREADS", holding some documentation.
+ *
+ * -- Peter Stamfest <peter@stamfest.at>
+ *
  * Revision 1.2  2002/05/07 21:58:32  oetiker
  * new command rrdtool xport integrated
  * --  Wolfgang Schrimm <Wolfgang.Schrimm@urz.uni-heidelberg.de>
@@ -21,6 +34,7 @@ extern "C" {
 #define _RRDLIB_H
 
 #include <time.h>
+#include <stdio.h> /* for FILE */
 
 /* Transplanted from rrd_format.h */
 typedef double       rrd_value_t;         /* the data storage type is
@@ -42,6 +56,17 @@ int    rrd_xport(int, char **, int *, time_t *, time_t *,
 		 unsigned long *, unsigned long *,
 		 char ***, rrd_value_t **);
 
+/* thread-safe (hopefully) */
+int    rrd_create_r(char *filename,
+		    unsigned long pdp_step, time_t last_up,
+		    int argc, char **argv);
+/* NOTE: rrd_update_r is only thread-safe if no at-style time
+   specifications get used!!! */
+int    rrd_update_r(char *filename, char *template,
+		    int argc, char **argv);
+int    rrd_dump_r(char *filename);
+time_t rrd_last_r(char *filename);
+
 /* Transplanted from parsetime.h */
 typedef enum {
         ABSOLUTE_TIME,
@@ -57,6 +82,16 @@ struct time_value {
   struct tm tm;
 };
 
+struct rrd_context {
+    int len;
+    int errlen;
+    char *lib_errstr;
+    char *rrd_error;
+};
+
+/* returns the current per-thread rrd_context */
+struct rrd_context *rrd_get_context(void);
+
 char *parsetime(char *spec, struct time_value *ptv);
 /* END parsetime.h */
 
@@ -67,6 +102,16 @@ void rrd_set_error(char *,...);
 void rrd_clear_error(void);
 int  rrd_test_error(void);
 char *rrd_get_error(void);
+
+/** MULTITHREADED HELPER FUNCTIONS */
+struct rrd_context *rrd_new_context(void);
+void   rrd_free_context (struct rrd_context *buf);
+
+/* void   rrd_set_error_r  (struct rrd_context *, char *, ...); */
+/* void   rrd_clear_error_r(struct rrd_context *); */
+/* int    rrd_test_error_r (struct rrd_context *); */
+/* char  *rrd_get_error_r  (struct rrd_context *); */
+
 int  LockRRD(FILE *);
 
 #endif /* _RRDLIB_H */