diff options
Diffstat (limited to 'server-tools/instance-manager/instance_map.h')
-rw-r--r-- | server-tools/instance-manager/instance_map.h | 68 |
1 files changed, 57 insertions, 11 deletions
diff --git a/server-tools/instance-manager/instance_map.h b/server-tools/instance-manager/instance_map.h index 18e82f0106b..71ee7ec4c6e 100644 --- a/server-tools/instance-manager/instance_map.h +++ b/server-tools/instance-manager/instance_map.h @@ -16,21 +16,25 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <my_global.h> - -#include "protocol.h" -#include "guardian.h" - #include <my_sys.h> +#include <m_string.h> #include <hash.h> #if defined(__GNUC__) && defined(USE_PRAGMA_INTERFACE) #pragma interface #endif +class Guardian; class Instance; +class Named_value_arr; +class Thread_registry; + extern int load_all_groups(char ***groups, const char *filename); extern void free_groups(char **groups); +extern int create_instance_in_file(const LEX_STRING *instance_name, + const Named_value_arr *options); + /* Instance_map - stores all existing instances @@ -55,31 +59,73 @@ public: }; friend class Iterator; public: - /* returns a pointer to the instance or NULL, if there is no such instance */ - Instance *find(const char *name, uint name_len); + /* + Return a pointer to the instance or NULL, if there is no such instance. + MT-NOTE: must be called under acquired lock. + */ + Instance *find(const LEX_STRING *name); + /* Clear the configuration cache and reload the configuration file. */ int flush_instances(); + + /* The operation is used to check if there is an active instance or not. */ + bool is_there_active_instance(); + void lock(); void unlock(); - int init(); + + bool init(); + /* Process a given option and assign it to appropricate instance. This is required for the option handler, passed to my_search_option_files(). */ - int process_one_option(const char *group, const char *option); + int process_one_option(const LEX_STRING *group, const char *option); + + /* + Add an instance into the internal hash. + + MT-NOTE: the operation must be called under acquired lock. + */ + int add_instance(Instance *instance); + + /* + Remove instance from the internal hash. + + MT-NOTE: the operation must be called under acquired lock. + */ + int remove_instance(Instance *instance); + + /* + Create a new instance and register it in the internal hash. - Instance_map(const char *default_mysqld_path_arg); + MT-NOTE: the operation must be called under acquired lock. + */ + int create_instance(const LEX_STRING *instance_name, + const Named_value_arr *options); + + Instance_map(); ~Instance_map(); + /* + Retrieve client state name of the given instance. + + MT-NOTE: the options must be called under acquired locks of the following + objects: + - Instance_map; + - Guardian; + */ + const char *get_instance_state_name(Instance *instance); + public: const char *mysqld_path; - Guardian_thread *guardian; + Guardian *guardian; private: /* loads options from config files */ int load(); /* inits instances argv's after all options have been loaded */ - int complete_initialization(); + bool complete_initialization(); private: enum { START_HASH_SIZE = 16 }; pthread_mutex_t LOCK_instance_map; |