swap.c File Reference

All those functions deal with swapping maps to disk to claim memory space. More...

#include <global.h>
#include <sproto.h>
#include <object.h>

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Functions
void	check_active_maps (void)
	Finds maps in memory to reset.
void	flush_old_maps (void)
	Removes tmp-files of maps which are going to be reset next time they are visited.
static mapstruct *	map_least_timeout (const char *except_level)
	Returns the map with the lowest timeout variable (not 0).
int	players_on_map (mapstruct *m, int show_all)
	Returns the count of players on a map, calculated from player list.
void	read_map_log (void)
	Reads temporary maps information from disk.
void	swap_below_max (const char *except_level)
	Tries to swap out maps which are still in memory, because of MAP_TIMEOUT until used objects is below MAX_OBJECTS or there are no more maps to swap.
int	swap_map (mapstruct *map)
	Swaps a map to disk.
static void	write_map_log (void)
	Writes out information on all the temporary maps.

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Detailed Description

All those functions deal with swapping maps to disk to claim memory space.

Definition in file swap.c.

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Function Documentation

void check_active_maps

(

void

)

Finds maps in memory to reset.

Todo:

The check for MAX_OBJECTS_LWM is wrongly placed, and should be moved elsewhere.

Definition at line 206 of file swap.c.

References first_map, mapdef::in_memory, MAP_IN_MEMORY, mapdef::next, swap_map(), and mapdef::timeout.

Referenced by server_main().

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void flush_old_maps

(

void

)

Removes tmp-files of maps which are going to be reset next time they are visited.

This is very useful if the tmp-disk is very full.

Definition at line 305 of file swap.c.

References clean_tmp_map(), delete_map(), EVENT_MAPRESET, execute_global_event(), first_map, mapdef::in_memory, mapdef::is_template, llevDebug, LOG(), MAP_IN_MEMORY, MAP_SWAPPED, mapdef::next, mapdef::path, players_on_map(), seconds(), set_map_timeout(), mapdef::timeout, mapdef::tmpname, TRUE, and mapdef::unique.

Referenced by block_until_new_connection(), command_reset(), and do_specials().

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static mapstruct* map_least_timeout

(

const char *

except_level

)

[static]

Returns the map with the lowest timeout variable (not 0).

Parameters:

except_level

path of map to ignore for reset. Musn't be NULL.

Returns:

map, or NULL if no map is ready for reset.

Definition at line 232 of file swap.c.

References first_map, mapdef::in_memory, MAP_IN_MEMORY, MAP_MAXTIMEOUT, mapdef::next, mapdef::path, and mapdef::timeout.

Referenced by swap_below_max().

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int players_on_map	(	mapstruct *	m,
		int	show_all
	)

Returns the count of players on a map, calculated from player list.

Parameters:

m	map we want the count of players on.
show_all	if true, show everyone. If not, don't show hidden players (dms)

Returns:

player count.

Todo:

this doesn't take into account transports. Should be removed when mapstruct::players is valid.

Definition at line 287 of file swap.c.

References first_player, FLAG_REMOVED, pl::hidden, pl::next, pl::ob, and QUERY_FLAG.

Referenced by flush_old_maps(), and map_info().

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void read_map_log

(

void

)

Reads temporary maps information from disk.

Will LOG() in case of error.

Definition at line 83 of file swap.c.

References mapdef::darkness, mapdef::difficulty, get_linked_map(), mapdef::in_memory, llevDebug, Settings::localdir, LOG(), MAP_MAXRESET, MAP_SWAPPED, MAX_BUF, mapdef::path, mapdef::reset_time, seconds(), settings, snprintf(), strdup_local(), mapdef::timeout, and mapdef::tmpname.

Referenced by init().

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void swap_below_max

(

const char *

except_level

)

Tries to swap out maps which are still in memory, because of MAP_TIMEOUT until used objects is below MAX_OBJECTS or there are no more maps to swap.

Parameters:

except_level

path of map to ignore for reset. Musn't be NULL.

Definition at line 253 of file swap.c.

References llevDebug, LOG(), map_least_timeout(), MAX_OBJECTS, nrofallocobjects, nroffreeobjects, mapdef::path, swap_map(), and mapdef::timeout.

Referenced by enter_map().

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int swap_map

(

mapstruct *

map

)

Swaps a map to disk.

After calling this function, the map will be:

• swapped to disk
• kept in memory in case of save error

Parameters:

map	map to swap.

Returns:

one of SAVE_ERROR_xxx.

Definition at line 146 of file swap.c.

References delete_map(), draw_ext_info_format(), EVENT_MAPRESET, execute_global_event(), first_player, mapdef::fixed_resettime, FLAG_REMOVED, free_map(), mapdef::in_memory, llevDebug, llevError, LOG(), MAP_IN_MEMORY, MSG_TYPE_ADMIN, MSG_TYPE_ADMIN_LOADSAVE, NDI_ALL_DMS, NDI_RED, NDI_UNIQUE, pl::next, mapdef::next, pl::ob, mapdef::path, QUERY_FLAG, Settings::recycle_tmp_maps, remove_all_pets(), mapdef::reset_time, SAVE_ERROR_NOT_IN_MEMORY, SAVE_ERROR_OK, SAVE_ERROR_PLAYER, save_map(), SAVE_MODE_NORMAL, seconds(), set_map_reset_time(), settings, TRUE, and write_map_log().

Referenced by check_active_maps(), clean_tmp_files(), command_reset(), set_map_timeout(), and swap_below_max().

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static void write_map_log

(

void

)

[static]

Writes out information on all the temporary maps.

It is called by swap_map().

Will LOG() in case of error.

Definition at line 46 of file swap.c.

References mapdef::darkness, mapdef::difficulty, first_map, mapdef::in_memory, llevError, Settings::localdir, LOG(), MAP_IN_MEMORY, MAX_BUF, mapdef::next, mapdef::path, mapdef::reset_time, settings, snprintf(), and mapdef::tmpname.

Referenced by swap_map().

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