more fixes for IM to substitude mysqld_safe in startup scripts

BitKeeper/deleted/.del-thread_repository.cc~bba09f64f8cb4037:
  Delete: server-tools/instance-manager/thread_repository.cc
BitKeeper/deleted/.del-thread_repository.h~e6a3b9cab7a6612a:
  Delete: server-tools/instance-manager/thread_repository.h
server-tools/instance-manager/commands.cc:
  All instances are guarded by default now, so we need to perform check on whether the instance is nonguarded,
  rather then guarded when adding it to the list of guarded instnces.
server-tools/instance-manager/guardian.cc:
  Guardian rewritten to start instances by default, and shut them down, when exiting. Behaviour of the guardian
  in case of the instance crash has changed. Now it tries to restart an instance constantly in the first 2 
  seconds after the crash was noticed, and then it tries restart an instance once in the MONITORING_INTERVAL.
  If it failed to restart instance for "restart_retry" (compiled-in value) times, guardian stops trying to
  restart it.
server-tools/instance-manager/guardian.h:
  Several new functions and variables declared.
server-tools/instance-manager/instance.cc:
  now start doesn't call stop(), but rather tries to remove the pidfile itself
server-tools/instance-manager/instance.h:
  cleanup
server-tools/instance-manager/instance_map.cc:
  no more "admin" options
server-tools/instance-manager/instance_map.h:
  User and password purged from instance_map options, as IM shouldn't know them
server-tools/instance-manager/instance_options.cc:
  new option added -- shutdown_delay, guarded option now called nonguaded and has the opposite meaning
server-tools/instance-manager/instance_options.h:
  appropriate changes, reflecting options addition/removal
server-tools/instance-manager/manager.cc:
  shutdown process is complicated a bit -- at first signal thread should stop guardian, and only then the IM
  itself
server-tools/instance-manager/messages.cc:
  update error message
server-tools/instance-manager/options.cc:
  admin user/password purged from mysqlmanager options

1 files changed, 19 insertions, 0 deletions

diff --git a/server-tools/instance-manager/guardian.h b/server-tools/instance-manager/guardian.h
index bcc249ed7d3..d96208247ae 100644
--- a/server-tools/instance-manager/guardian.h
+++ b/server-tools/instance-manager/guardian.h
@@ -24,6 +24,7 @@
 #pragma interface
 #endif
 
+class Instance;
 class Instance_map;
 
 #include "thread_registry.h"
@@ -35,6 +36,13 @@ pthread_handler_decl(guardian, arg);
 
 C_MODE_END
 
+typedef struct st_guard_node
+{
+  Instance *instance;
+  uint restart_counter;
+  time_t crash_moment;
+} GUARD_NODE;
+
 
 struct Guardian_thread_args
 {
@@ -67,13 +75,17 @@ public:
   void run();
   int init();
   int start();
+  void shutdown();
+  void request_stop_instances();
   int guard(Instance *instance);
   int stop_guard(Instance *instance);
+  bool is_stopped;
 
 public:
   pthread_cond_t COND_guardian;
 
 private:
+  int stop_instances();
   int add_instance_to_list(Instance *instance, LIST **list);
   void move_to_list(LIST **from, LIST **to);
 
@@ -84,6 +96,13 @@ private:
   LIST *starting_instances;
   MEM_ROOT alloc;
   enum { MEM_ROOT_BLOCK_SIZE= 512 };
+  /* this variable is set to TRUE when we want to stop Guardian thread */
+  bool shutdown_guardian;
+  /*
+    This var is usually set together with shutdown_guardian. this way we
+    request guardian to shut down all instances before termination
+  */
+  bool request_stop;
 };
 
 #endif /* INCLUDES_MYSQL_INSTANCE_MANAGER_GUARDIAN_H */