split out reexec from mds-registry

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 1 insertions, 150 deletions

diff --git a/src/mds-registry/mds-registry.c b/src/mds-registry/mds-registry.c
index b41733a..fa6a3b5 100644
--- a/src/mds-registry/mds-registry.c
+++ b/src/mds-registry/mds-registry.c
@@ -19,6 +19,7 @@
 
 #include "util.h"
 #include "globals.h"
+#include "reexec.h"
 
 #include <libmdsserver/macros.h>
 #include <libmdsserver/util.h>
@@ -36,8 +37,6 @@
 
 
 
-#define MDS_REGISTRY_VARS_VERSION  0
-
 
 
 /**
@@ -148,154 +147,6 @@ int postinitialise_server(void)
 
 
 /**
- * Calculate the number of bytes that will be stored by `marshal_server`
- * 
- * On failure the program should `abort()` or exit by other means.
- * However it should not be possible for this function to fail.
- * 
- * @return  The number of bytes that will be stored by `marshal_server`
- */
-size_t marshal_server_size(void)
-{
-  size_t i, rc = 2 * sizeof(int) + sizeof(int32_t) + 3 * sizeof(size_t);
-  hash_entry_t* entry;
-  
-  rc += mds_message_marshal_size(&received);
-  
-  foreach_hash_table_entry (reg_table, i, entry)
-    {
-      char* command = (char*)(void*)(entry->key);
-      size_t len = strlen(command) + 1;
-      client_list_t* list = (client_list_t*)(void*)(entry->value);
-      
-      rc += len + sizeof(size_t) + client_list_marshal_size(list);
-    }
-  
-  return rc;
-}
-
-
-/**
- * Marshal server implementation specific data into a buffer
- * 
- * @param   state_buf  The buffer for the marshalled data
- * @return             Non-zero on error
- */
-int marshal_server(char* state_buf)
-{
-  size_t i, n = mds_message_marshal_size(&received);
-  hash_entry_t* entry;
-  
-  buf_set_next(state_buf, int, MDS_REGISTRY_VARS_VERSION);
-  buf_set_next(state_buf, int, connected);
-  buf_set_next(state_buf, int32_t, message_id);
-  buf_set_next(state_buf, size_t, n);
-  mds_message_marshal(&received, state_buf);
-  state_buf += n / sizeof(char);
-  
-  buf_set_next(state_buf, size_t, reg_table.capacity);
-  buf_set_next(state_buf, size_t, reg_table.size);
-  foreach_hash_table_entry (reg_table, i, entry)
-    {
-      char* command = (char*)(void*)(entry->key);
-      size_t len = strlen(command) + 1;
-      client_list_t* list = (client_list_t*)(void*)(entry->value);
-      
-      memcpy(state_buf, command, len * sizeof(char));
-      state_buf += len;
-      
-      n = client_list_marshal_size(list);
-      buf_set_next(state_buf, size_t, n);
-      client_list_marshal(list, state_buf);
-      state_buf += n / sizeof(char);
-    }
-  
-  hash_table_destroy(&reg_table, (free_func*)reg_table_free_key, (free_func*)reg_table_free_value);
-  mds_message_destroy(&received);
-  return 0;
-}
-
-
-/**
- * Unmarshal server implementation specific data and update the servers state accordingly
- * 
- * On critical failure the program should `abort()` or exit by other means.
- * That is, do not let `reexec_failure_recover` run successfully, if it unrecoverable
- * error has occurred or one severe enough that it is better to simply respawn.
- * 
- * @param   state_buf  The marshalled data that as not been read already
- * @return             Non-zero on error
- */
-int unmarshal_server(char* state_buf)
-{
-  char* command;
-  client_list_t* list;
-  size_t i, n, m;
-  int stage = 0;
-  
-  /* buf_get_next(state_buf, int, MDS_REGISTRY_VARS_VERSION); */
-  buf_next(state_buf, int, 1);
-  buf_get_next(state_buf, int, connected);
-  buf_get_next(state_buf, int32_t, message_id);
-  buf_get_next(state_buf, size_t, n);
-  fail_if (mds_message_unmarshal(&received, state_buf));
-  state_buf += n / sizeof(char);
-  stage = 1;
-  
-  buf_get_next(state_buf, size_t, n);
-  fail_if (hash_table_create_tuned(&reg_table, n));
-  buf_get_next(state_buf, size_t, n);
-  for (i = 0; i < n; i++)
-    {
-      stage = 1;
-      fail_if ((command = strdup(state_buf)) == NULL);
-      state_buf += strlen(command) + 1;
-      
-      stage = 2;
-      fail_if ((list = malloc(sizeof(client_list_t))) == NULL);
-      buf_get_next(state_buf, size_t, m);
-      stage = 3;
-      fail_if (client_list_unmarshal(list, state_buf));
-      state_buf += m / sizeof(char);
-      
-      hash_table_put(&reg_table, (size_t)(void*)command, (size_t)(void*)list);
-      fail_if (errno);
-    }
-  
-  reg_table.key_comparator = (compare_func*)string_comparator;
-  reg_table.hasher = (hash_func*)string_hash;
-  
-  return 0;
- pfail:
-  perror(*argv);
-  mds_message_destroy(&received);
-  if (stage >= 1)
-    hash_table_destroy(&reg_table, (free_func*)reg_table_free_key, (free_func*)reg_table_free_value);
-  if (stage >= 2)
-    free(command);
-  if (stage >= 3)
-    {
-      client_list_destroy(list);
-      free(list);
-    }
-  abort();
-  return -1;
-}
-
-
-/**
- * Attempt to recover from a re-exec failure that has been
- * detected after the server successfully updated it execution image
- * 
- * @return  Non-zero on error
- */
-int __attribute__((const)) reexec_failure_recover(void)
-{
-  return -1;
-}
-
-
-/**
  * Perform the server's mission
  * 
  * @return  Non-zero on error