add 3.00 log version warning to darshan parser

darshan-util/darshan-logutils.c

@@ -763,6 +763,19 @@ void darshan_log_close(darshan_fd fd)
     return;
 }
 
+void darshan_log_print_version_warnings(const char *version_string)
+{
+    if(strcmp(version_string, "3.00") == 0)
+    {
+        printf("# WARNING: version 3.00 log format has the following limitations:\n");
+        printf("# - Partial instrumentation of stdio stream I/O functions not parsable by Darshan versions >= 3.1.0\n");
+        printf("#     * Using darshan-logutils versions < 3.1.0, this data can be found in the following POSIX counters:\n");
+        printf("#         * POSIX_FOPENS, POSIX_FREADS, POSIX_FWRITES, POSIX_FSEEKS\n");
+    }
+
+    return;
+}
+
 /********************************************************
  *             internal helper functions                *
  ********************************************************/

darshan-util/darshan-logutils.h

@@ -146,6 +146,7 @@ int darshan_log_get_mod(darshan_fd fd, darshan_module_id mod_id,
 int darshan_log_put_mod(darshan_fd fd, darshan_module_id mod_id,
     void *mod_buf, int mod_buf_sz, int ver);
 void darshan_log_close(darshan_fd file);
+void darshan_log_print_version_warnings(const char *version_string);
 
 /* convenience macros for printing Darshan counters */
 #define DARSHAN_PRINT_HEADER() \

darshan-util/darshan-parser.c

@@ -262,6 +262,9 @@ int main(int argc, char **argv)
         return(-1);
     }
 
+    /* print any warnings related to this log file version */
+    darshan_log_print_version_warnings(fd->version);
+
     if(fd->comp_type == DARSHAN_ZLIB_COMP)
         comp_str = "ZLIB";
     else if (fd->comp_type == DARSHAN_BZIP2_COMP)