Post-review fixes + some bugs fixed + several minor features

BitKeeper/deleted/.del-client_func.c~3476a8a85cbd3c29:
  Delete: server-tools/instance-manager/client_func.c
server-tools/instance-manager/Makefile.am:
  clien_func removed
server-tools/instance-manager/buffer.cc:
  several methods added
server-tools/instance-manager/buffer.h:
  Some error-handling fixes.
server-tools/instance-manager/commands.cc:
  check for Buffer errors
server-tools/instance-manager/guardian.cc:
  Guardian rewiriten. Not it works in a finite state machine-way.
server-tools/instance-manager/guardian.h:
  Appropriate (to .cc) changes in the header + some comment added
server-tools/instance-manager/instance.cc:
  added proxy thread to monitor instance. Two kinds of stop() now -- stop() and kill_instance which
  only sends a signal
server-tools/instance-manager/instance.h:
  appropriate changes
server-tools/instance-manager/instance_map.cc:
  cleanup
server-tools/instance-manager/instance_map.h:
  cleanup
server-tools/instance-manager/instance_options.cc:
  Caching of the pid-file-name is added. some comments added
server-tools/instance-manager/instance_options.h:
  cleanup
server-tools/instance-manager/listener.cc:
  listener my_thread_init added (though it doesn't use any mysys functions). Just in case
server-tools/instance-manager/manager.cc:
  SIGCHLD handler removed. now instance monitoring is implemented through proxy threads. This is to work nicely
  with LinuxThreads
server-tools/instance-manager/options.cc:
  added option to create a password file entry (this was implemented by Sergei Vojtovich)
server-tools/instance-manager/parse.cc:
  inline function get_word moved to the header
server-tools/instance-manager/parse.h:
  get_word moved here to use form parse_output
server-tools/instance-manager/parse_output.cc:
  get_word() clone removed. now looking through the output linewise
server-tools/instance-manager/protocol.cc:
  Buffer error chech added
server-tools/instance-manager/user_map.cc:
  typo fixed

1 files changed, 8 insertions, 1 deletions

diff --git a/server-tools/instance-manager/instance.h b/server-tools/instance-manager/instance.h
index 95852542fb4..fbe24e17554 100644
--- a/server-tools/instance-manager/instance.h
+++ b/server-tools/instance-manager/instance.h
@@ -30,14 +30,19 @@ class Instance_map;
 class Instance
 {
 public:
+  Instance();
+
   ~Instance();
   int init(const char *name);
   int complete_initialization(Instance_map *instance_map_arg);
 
-  /* check if the instance is running and set up mysql connection if yes */
   bool is_running();
   int start();
   int stop();
+  /* send a signal to the instance */
+  void kill_instance(int signo);
+  int is_crashed();
+  void fork_and_monitor();
 
 public:
   enum { DEFAULT_SHUTDOWN_DELAY= 35 };
@@ -49,7 +54,9 @@ private:
     double start of the instance. This happens when the instance is starting
     and we issue the start command once more.
   */
+  int crashed;
   pthread_mutex_t LOCK_instance;
+  pthread_cond_t COND_instance_restarted;
   Instance_map *instance_map;
 };