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rollingpolicy_type_sizewin.h(3) Library Functions Manual rollingpolicy_type_sizewin.h(3)

NAME

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.

SYNOPSIS

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

Typedefs


typedef struct __sizewin_udata rollingpolicy_sizewin_udata_t

Functions


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)

Detailed Description

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.

Typedef Documentation

typedef struct __sizewin_udata rollingpolicy_sizewin_udata_t

log4c size-win rolling policy type

Function Documentation

rollingpolicy_sizewin_udata_t * sizewin_make_udata (void)

Get a new size-win rolling policy

Returns

a new size-win rolling policy, otherwise NULL.

int sizewin_udata_set_appender (rollingpolicy_sizewin_udata_t * swup, log4c_appender_t * app)

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.

int sizewin_udata_set_file_maxsize (rollingpolicy_sizewin_udata_t * swup, long max_size)

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.

int sizewin_udata_set_max_num_files (rollingpolicy_sizewin_udata_t * swup, long max_num)

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.

Author

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Version 1.2.4 log4c