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Unload older autoloaded functions

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darcs-hash:20061010224546-ac50b-7c3f38d32d4a413a9c0d8436bb13a5d65235f3a7.gz
This commit is contained in:
axel
2006-10-11 08:45:46 +10:00
parent f5916358e5
commit c4f3b5e9ef
2 changed files with 77 additions and 5 deletions
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76
parse_util.c
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@@ -33,6 +33,18 @@
#include "wildcard.h"
#include "halloc_util.h"
/**
Maximum number of autoloaded items opf a specific type to keep in
memory at a time.
*/
#define AUTOLOAD_MAX 10
/**
Minimum time, in seconds, before an autoloaded item will be
unloaded
*/
#define AUTOLOAD_MIN_AGE 60
/**
A structure representing the autoload state for a specific variable, e.g. fish_complete_path
*/
@@ -580,7 +592,63 @@ int parse_util_unload( const wchar_t *cmd,
return !!val;
}
static int path_util_load_internal( const wchar_t *cmd,
static void parse_util_autounload( wchar_t *path_var_name,
wchar_t *skip,
void (*on_load)(const wchar_t *cmd) )
{
autoload_t *loaded;
int loaded_count=0;
if( !all_loaded )
{
return;
}
loaded = (autoload_t *)hash_get( all_loaded, path_var_name );
if( !loaded )
{
return;
}
if( hash_get_count( &loaded->load_time ) >= AUTOLOAD_MAX )
{
time_t oldest_access = time(0) - AUTOLOAD_MIN_AGE;
wchar_t *oldest_item=0;
int i;
array_list_t key;
al_init( &key );
hash_get_keys( &loaded->load_time, &key );
for( i=0; i<al_get_count( &key ); i++ )
{
wchar_t *item = (wchar_t *)al_get( &key, i );
time_t *tm = hash_get( &loaded->load_time, item );
if( wcscmp( item, skip ) == 0 )
{
continue;
}
if( !tm[0] )
continue;
loaded_count++;
if( tm[1] < oldest_access )
{
oldest_access = tm[1];
oldest_item = item;
}
}
if( oldest_item && loaded_count > AUTOLOAD_MAX)
{
parse_util_unload( oldest_item, path_var_name, on_load );
}
}
}
static int parse_util_load_internal( const wchar_t *cmd,
void (*on_load)(const wchar_t *cmd),
int reload,
autoload_t *loaded,
@@ -603,6 +671,8 @@ int parse_util_load( const wchar_t *cmd,
CHECK( path_var_name, 0 );
CHECK( cmd, 0 );
parse_util_autounload( path_var_name, cmd, on_load );
// debug( 0, L"Autoload %ls in %ls", cmd, path_var_name );
@@ -690,7 +760,7 @@ int parse_util_load( const wchar_t *cmd,
Do the actual work in the internal helper function
*/
res = path_util_load_internal( cmd, on_load, reload, loaded, path_list );
res = parse_util_load_internal( cmd, on_load, reload, loaded, path_list );
/**
Cleanup
@@ -718,7 +788,7 @@ int parse_util_load( const wchar_t *cmd,
the code, and the caller can take care of various cleanup work.
*/
static int path_util_load_internal( const wchar_t *cmd,
static int parse_util_load_internal( const wchar_t *cmd,
void (*on_load)(const wchar_t *cmd),
int reload,
autoload_t *loaded,