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/*
* xtl_core.c
*
* core code including functions for generating log messages
*
* Copyright (c) 2010 Citrix
* Part of a generic logging interface used by various dom0 userland libraries.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xentoollog.h"
#include <assert.h>
#include <errno.h>
#include <limits.h>
static const char *level_strings[XTL_NUM_LEVELS]= {
"[BUG:XTL_NONE]",
"debug", "verbose", "detail", /* normally off by default */
"progress", "info", "notice", /* not a problem */
"warning", "error", "critical" /* problems and errors */
};
const char *xtl_level_to_string(xentoollog_level level) {
assert(level >= 0 && level < XTL_NUM_LEVELS);
return level_strings[level];
}
void xtl_logv(struct xentoollog_logger *logger,
xentoollog_level level,
int errnoval /* or -1 */,
const char *context /* eg "xc", "xenstore", "xl" */,
const char *format /* does not contain \n */,
va_list al) {
int errno_save = errno;
assert(level > XTL_NONE && level < XTL_NUM_LEVELS);
logger->vmessage(logger,level,errnoval,context,format,al);
errno = errno_save;
}
void xtl_log(struct xentoollog_logger *logger,
xentoollog_level level,
int errnoval /* or -1 */,
const char *context /* eg "xc", "xenstore", "xl" */,
const char *format /* does not contain \n */,
...) {
va_list al;
va_start(al,format);
xtl_logv(logger,level,errnoval,context,format,al);
va_end(al);
}
void xtl_progress(struct xentoollog_logger *logger,
const char *context, const char *doing_what,
unsigned long done, unsigned long total) {
int percent;
if (!logger->progress) return;
percent = (total < LONG_MAX/100)
? (done * 100) / total
: done / ((total + 99) / 100);
logger->progress(logger, context, doing_what, percent, done, total);
}
void xtl_logger_destroy(struct xentoollog_logger *logger) {
if (!logger) return;
logger->destroy(logger);
}
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