DOKK / manpages / debian 12 / liblog4c-doc / log4c_sizewin_udata_set_max_num_files.3.en
rollingpolicy_type_sizewin.h(3) log4c rollingpolicy_type_sizewin.h(3)

rollingpolicy_type_sizewin.h - Log4c rolling file size-win interface. 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.

#include <log4c/defs.h>
#include <log4c/rollingpolicy.h>


typedef struct __sizewin_udata rollingpolicy_sizewin_udata_t


rollingpolicy_sizewin_udata_t * sizewin_make_udata (void)
int sizewin_udata_set_file_maxsize (rollingpolicy_sizewin_udata_t *swup, long max_size)
int sizewin_udata_set_max_num_files (rollingpolicy_sizewin_udata_t *swup, long max_num)
int sizewin_udata_set_appender (rollingpolicy_sizewin_udata_t *swup, log4c_appender_t *app)

Log4c rolling file size-win interface. 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.

If the max file size is set to zero, this means 'no-limit'.

The default parameters for the size-win policy are 5 files of maximum size of 20kilobytes each. These parameters may be changed using the appropriate setter functions.

log4c size-win rolling policy type

rollingpolicy_sizewin_udata_t * sizewin_make_udata (void)

Get a new size-win rolling policy

Returns

a new size-win rolling policy, otherwise NULL.

References sizewin_udata_set_file_maxsize().

Set the rolling file appender in this rolling policy configuration.

Parameters

swup the size-win configuration object.
app the rolling file appender to set.

Returns

zero if successful, non-zero otherwise.

Set the maximum file size in this rolling policy configuration.

Parameters

swup the size-win configuration object.
max_size the approximate maximum size any logging file will attain. If you set zero then it means 'no-limit' and so only one file of unlimited size will be used for logging.

Returns

zero if successful, non-zero otherwise.

Set the maximum number of filesin this rolling policy configuration.

Parameters

swup the size-win configuration object.
max_num the maximum number of files in the list.

Returns

zero if successful, non-zero otherwise.

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Thu Jan 19 2023 Version 1.2.4