table of contents
| appender_type_rollingfile.h(3) | log4c | appender_type_rollingfile.h(3) |
NAME¶
appender_type_rollingfile.h - Log4c rolling file appender interface.
SYNOPSIS¶
#include <log4c/defs.h>
#include <log4c/appender.h>
#include <log4c/rollingpolicy.h>
Functions¶
rollingfile_udata_t * rollingfile_make_udata (void)
int rollingfile_udata_set_logdir (rollingfile_udata_t *rfudatap, const
char *logdir)
int rollingfile_udata_set_files_prefix (rollingfile_udata_t *rfudatap,
const char *prefix)
int rollingfile_udata_set_policy (rollingfile_udata_t *rfudatap,
log4c_rollingpolicy_t *policyp)
const char * rollingfile_udata_get_logdir (rollingfile_udata_t
*rfudatap)
const char * rollingfile_udata_get_files_prefix (rollingfile_udata_t
*rfudatap)
long rollingfile_get_current_file_size (rollingfile_udata_t *rfudatap)
Variables¶
__LOG4C_BEGIN_DECLS const log4c_appender_type_t
log4c_appender_type_rollingfile
Detailed Description¶
Log4c rolling file appender interface.
The rolling file appender implements a logging mechanism of a list of files up to a maximum number.
The files are written by default to the current directory with logging names folowing the pattern log.1, log.2 etc. These parameters may be changed using the appropriate setter functions.
If the appender fails to open logfiles for writing then the messages are logged to stderr--it will continue to try to open the zero-th file for writing at rollover events so if it succeeds at some point to open that file the messages will start to appear therein and will no longer be sent to stderr.
Switching from logging from one file to the next is referred to as a 'rollover event'.
The policy that determines when a rollover event should happen is called a 'rolling policy'.
A mechanism is provided to allow different rolling policies to be defined.
Log4c ships with (and defaults to) the classic size-window rollover policy: this triggers rollover when files reach a maximum size. The first file in the list is always the current file; when a rollover event occurs files are shifted up by one position in the list--if the number of files in the list has already reached the max then the oldest file is rotated out of the window.
See the documentation in the rollingpolicy_type_sizewin.h file for more details on the size-win rollover policy.
Function Documentation¶
long rollingfile_get_current_file_size (rollingfile_udata_t * rfudatap)¶
Get the prefix string in this rolling file appender configuration.
Parameters
Returns
rollingfile_udata_t * rollingfile_make_udata (void)¶
Get a new rolling file appender configuration object.
Returns
const char * rollingfile_udata_get_files_prefix (rollingfile_udata_t * rfudatap)¶
Get the prefix string in this rolling file appender configuration.
Parameters
Returns
const char * rollingfile_udata_get_logdir (rollingfile_udata_t * rfudatap)¶
Get the logging directory in this rolling file appender configuration.
Parameters
Returns
int rollingfile_udata_set_files_prefix (rollingfile_udata_t * rfudatap, const char * prefix)¶
Set the prefix string in this rolling file appender configuration.
Parameters
prefix the logging files prfix to use.
Returns
int rollingfile_udata_set_logdir (rollingfile_udata_t * rfudatap, const char * logdir)¶
Set the logging directory in this rolling file appender configuration.
Parameters
logdir the logging directory to set.
Returns
int rollingfile_udata_set_policy (rollingfile_udata_t * rfudatap, log4c_rollingpolicy_t * policyp)¶
Set the rolling policy in this rolling file appender configuration.
Parameters
policyp the logging files prfix to use.
Returns
Variable Documentation¶
__LOG4C_BEGIN_DECLS const log4c_appender_type_t log4c_appender_type_rollingfile¶
rollingfile appender type definition.
This should be used as a parameter to the log4c_appender_set_type() routine to set the type of the appender.
Author¶
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| Thu Jan 19 2023 | Version 1.2.4 |