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https://github.com/xen-project/xen.git
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Andrew Cooper
cc3fefc4f1
Progress information is logged via a different logger to regular libxc log
messages, and currently can only express a range. However, not everything
which needs reporting as progress comes with a range. Extend the interface to
allow reporting of a single statement.
The programming interface now looks like:
xc_set_progress_prefix()
set the prefix string to be used
xc_report_progress_single()
report a single action
xc_report_progress_step()
report $X of $Y
The new programming interface is implemented in a compatible way with the
existing caller interface (by reporting a single action as "0 of 0").
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*
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* xtl_core.c
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*
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* core code including functions for generating log messages
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*
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* Copyright (c) 2010 Citrix
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* Part of a generic logging interface used by various dom0 userland libraries.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xentoollog.h"
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#include <assert.h>
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#include <errno.h>
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#include <limits.h>
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static const char *level_strings[XTL_NUM_LEVELS]= {
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"[BUG:XTL_NONE]",
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"debug", "verbose", "detail", /* normally off by default */
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"progress", "info", "notice", /* not a problem */
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"warning", "error", "critical" /* problems and errors */
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};
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const char *xtl_level_to_string(xentoollog_level level) {
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assert(level >= 0 && level < XTL_NUM_LEVELS);
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return level_strings[level];
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}
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void xtl_logv(struct xentoollog_logger *logger,
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xentoollog_level level,
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int errnoval /* or -1 */,
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const char *context /* eg "xc", "xenstore", "xl" */,
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const char *format /* does not contain \n */,
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va_list al) {
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int errno_save = errno;
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assert(level > XTL_NONE && level < XTL_NUM_LEVELS);
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logger->vmessage(logger,level,errnoval,context,format,al);
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errno = errno_save;
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}
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void xtl_log(struct xentoollog_logger *logger,
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xentoollog_level level,
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int errnoval /* or -1 */,
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const char *context /* eg "xc", "xenstore", "xl" */,
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const char *format /* does not contain \n */,
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...) {
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va_list al;
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va_start(al,format);
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xtl_logv(logger,level,errnoval,context,format,al);
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va_end(al);
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}
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void xtl_progress(struct xentoollog_logger *logger,
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const char *context, const char *doing_what,
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unsigned long done, unsigned long total) {
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int percent = 0;
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if (!logger->progress) return;
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if ( total )
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percent = (total < LONG_MAX/100)
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? (done * 100) / total
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: done / ((total + 99) / 100);
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logger->progress(logger, context, doing_what, percent, done, total);
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}
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void xtl_logger_destroy(struct xentoollog_logger *logger) {
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if (!logger) return;
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logger->destroy(logger);
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}
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