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converting plugin states to bitmask to simplify testing.

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state_mask argument to plugin_foreach()


sql/sql_show.cc:
  state_mask argument to plugin_foreach()
This commit is contained in:
unknown
2006-09-06 10:22:59 +02:00
parent 6e5c98ea76
commit 71681467ca
3 changed files with 27 additions and 19 deletions
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25
sql/sql_plugin.h
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@ -31,13 +31,17 @@ typedef struct st_mysql_show_var SHOW_VAR;
#define MYSQL_ANY_PLUGIN -1
enum enum_plugin_state
{
PLUGIN_IS_FREED= 0,
PLUGIN_IS_DELETED,
PLUGIN_IS_UNINITIALIZED,
PLUGIN_IS_READY
};
/*
different values of st_plugin_int::state
though they look like a bitmap, plugin may only
be in one of those eigenstates, not in a superposition of them :)
It's a bitmap, because it makes it easier to test
"whether the state is one of those..."
*/
#define PLUGIN_IS_FREED 1
#define PLUGIN_IS_DELETED 2
#define PLUGIN_IS_UNINITIALIZED 4
#define PLUGIN_IS_READY 8
/* A handle for the dynamic library containing a plugin or plugins. */
@ -57,7 +61,7 @@ struct st_plugin_int
LEX_STRING name;
struct st_mysql_plugin *plugin;
struct st_plugin_dl *plugin_dl;
enum enum_plugin_state state;
uint state;
uint ref_count; /* number of threads using the plugin */
void *data; /* plugin type specific, e.g. handlerton */
};
@ -78,6 +82,7 @@ extern my_bool mysql_uninstall_plugin(THD *thd, const LEX_STRING *name);
typedef my_bool (plugin_foreach_func)(THD *thd,
st_plugin_int *plugin,
void *arg);
extern my_bool plugin_foreach(THD *thd, plugin_foreach_func *func,
int type, void *arg);
#define plugin_foreach(A,B,C,D) plugin_foreach_with_mask(A,B,C,PLUGIN_IS_READY,D)
extern my_bool plugin_foreach_with_mask(THD *thd, plugin_foreach_func *func,
int type, uint state_mask, void *arg);
#endif