/*****************************************************************************
- * RRDtool 1.0.33 Copyright Tobias Oetiker, 1997 - 2000
+ * RRDtool 1.3.2 Copyright by Tobi Oetiker, 1997-2008
*****************************************************************************
* rrd_error.c Common Header File
*****************************************************************************
* $Id$
* $Log$
- * Revision 1.1 2001/02/25 22:25:05 oetiker
- * Initial revision
+ * Revision 1.4 2003/02/22 21:57:03 oetiker
+ * a patch to avoid a memory leak and a Makefile.am patch to
+ * distribute all required source files -- Peter Stamfest <peter@stamfest.at>
+ *
+ * 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 2002/02/01 20:34:49 oetiker
+ * fixed version number and date/time
+ *
+ * Revision 1.1.1.1 2001/02/25 22:25:05 oetiker
+ * checkin
*
*************************************************************************** */
-#include "rrd_tool.h"
-#define MAXLEN 4096
-static char rrd_error[MAXLEN] = "\0";
+#include <stdlib.h>
#include <stdarg.h>
+#include "rrd_tool.h"
+#define MAXLEN 4096
+#define ERRBUFLEN 256
+#define CTX (rrd_get_context())
-void
-rrd_set_error(char *fmt, ...)
+void rrd_set_error(
+ char *fmt,
+ ...)
{
- va_list argp;
+ va_list argp;
+
rrd_clear_error();
va_start(argp, fmt);
#ifdef HAVE_VSNPRINTF
- vsnprintf((char *)rrd_error, MAXLEN-1, fmt, argp);
+ vsnprintf(CTX->rrd_error, sizeof(CTX->rrd_error), fmt, argp);
#else
- vsprintf((char *)rrd_error, fmt, argp);
+ vsprintf(CTX->rrd_error, fmt, argp);
#endif
va_end(argp);
}
-int
-rrd_test_error(void) {
- return rrd_error[0] != '\0';
+int rrd_test_error(
+ void)
+{
+ return CTX->rrd_error[0] != '\0';
}
-void
-rrd_clear_error(void){
- rrd_error[0] = '\0';
+void rrd_clear_error(
+ void)
+{
+ CTX->rrd_error[0] = '\0';
}
-char *
-rrd_get_error(void){
- return (char *)rrd_error;
+char *rrd_get_error(
+ void)
+{
+ return CTX->rrd_error;
}
+#if 0
+/* PS: Keep this stuff around, maybe we want it again if we use
+ rrd_contexts to really associate them with single RRD files and
+ operations on them... Then a single thread may use more than one
+ context. Using these functions would require to change each and
+ every function containing any of the non _r versions... */
+void rrd_set_error_r(
+ rrd_context_t * rrd_ctx,
+ char *fmt,
+ ...)
+{
+ va_list argp;
+ rrd_clear_error_r(rrd_ctx);
+ va_start(argp, fmt);
+#ifdef HAVE_VSNPRINTF
+ vsnprintf(rrd_ctx->rrd_error, sizeof(rrd_ctx->rrd_error), fmt, argp);
+ rrd_ctx->rrd_error[sizeof(rrd_ctx->rrd_error) - 1] = '\0';
+#else
+ vsprintf(rrd_ctx->rrd_error, fmt, argp);
+#endif
+ va_end(argp);
+}
+int rrd_test_error_r(
+ rrd_context_t * rrd_ctx)
+{
+ return rrd_ctx->rrd_error[0] != '\0';
+}
+void rrd_clear_error_r(
+ rrd_context_t * rrd_ctx)
+{
+ rrd_ctx->rrd_error[0] = '\0';
+}
+char *rrd_get_error_r(
+ rrd_context_t * rrd_ctx)
+{
+ return rrd_ctx->rrd_error;
+}
+#endif
+/* PS: Should we move this to some other file? It is not really error
+ related. */
+rrd_context_t *rrd_new_context(
+ void)
+{
+ rrd_context_t *rrd_ctx = (rrd_context_t *) malloc(sizeof(rrd_context_t));
+ if (!rrd_ctx) {
+ return NULL;
+ }
+ rrd_ctx->rrd_error[0] = '\0';
+ rrd_ctx->lib_errstr[0] = '\0';
+ return rrd_ctx;
+}
+void rrd_free_context(
+ rrd_context_t * rrd_ctx)
+{
+ if (rrd_ctx) {
+ free(rrd_ctx);
+ }
+}
-
+#if 0
+void rrd_globalize_error(
+ rrd_context_t * rrd_ctx)
+{
+ if (rrd_ctx) {
+ rrd_set_error(rrd_ctx->rrd_error);
+ }
+}
+#endif