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authorMattias Andrée <maandree@kth.se>2017-11-05 00:09:50 +0100
committerMattias Andrée <maandree@kth.se>2017-11-05 00:09:50 +0100
commit9e8dec188d55ca1f0a3b33acab702ced8ed07a18 (patch)
treecbb43c22e72674dc672e645e6596358e3868568e /src/mds-server/reexec.c
parenttypo (diff)
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Work on changing style, and an important typo fix
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'src/mds-server/reexec.c')
-rw-r--r--src/mds-server/reexec.c399
1 files changed, 198 insertions, 201 deletions
diff --git a/src/mds-server/reexec.c b/src/mds-server/reexec.c
index bac066a..a2e0620 100644
--- a/src/mds-server/reexec.c
+++ b/src/mds-server/reexec.c
@@ -49,26 +49,26 @@
*
* @return The number of bytes that will be stored by `marshal_server`
*/
-size_t marshal_server_size(void)
+size_t
+marshal_server_size(void)
{
- size_t list_size = linked_list_marshal_size(&client_list);
- size_t map_size = fd_table_marshal_size(&client_map);
- size_t list_elements = 0;
- size_t state_n = 0;
- ssize_t node;
-
- /* Calculate the grand size of all client information. */
- foreach_linked_list_node (client_list, node)
- {
- state_n += client_marshal_size((client_t*)(void*)(client_list.values[node]));
- list_elements++;
- }
-
- /* Add the size of the rest of the program's state. */
- state_n += sizeof(int) + sizeof(sig_atomic_t) + 2 * sizeof(uint64_t) + 2 * sizeof(size_t);
- state_n += list_elements * sizeof(size_t) + list_size + map_size;
-
- return state_n;
+ size_t list_size = linked_list_marshal_size(&client_list);
+ size_t map_size = fd_table_marshal_size(&client_map);
+ size_t list_elements = 0;
+ size_t state_n = 0;
+ ssize_t node;
+
+ /* Calculate the grand size of all client information. */
+ foreach_linked_list_node (client_list, node) {
+ state_n += client_marshal_size((void *)(client_list.values[node]));
+ list_elements++;
+ }
+
+ /* Add the size of the rest of the program's state. */
+ state_n += sizeof(int) + sizeof(sig_atomic_t) + 2 * sizeof(uint64_t) + 2 * sizeof(size_t);
+ state_n += list_elements * sizeof(size_t) + list_size + map_size;
+
+ return state_n;
}
@@ -78,68 +78,69 @@ size_t marshal_server_size(void)
* @param state_buf The buffer for the marshalled data
* @return Non-zero on error
*/
-int marshal_server(char* state_buf)
+int
+marshal_server(char *state_buf)
{
- size_t list_size = linked_list_marshal_size(&client_list);
- size_t list_elements = 0;
- ssize_t node;
-
-
- /* Release resources. */
- pthread_mutex_destroy(&slave_mutex);
- pthread_cond_destroy(&slave_cond);
- pthread_mutex_destroy(&modify_mutex);
- pthread_cond_destroy(&modify_cond);
- hash_table_destroy(&modify_map, NULL, NULL);
-
-
- /* Count the number of clients that online. */
- foreach_linked_list_node (client_list, node)
- list_elements++;
-
- /* Tell the new version of the program what version of the program it is marshalling. */
- buf_set_next(state_buf, int, MDS_SERVER_VARS_VERSION);
-
- /* Marshal the miscellaneous state data. */
- buf_set_next(state_buf, sig_atomic_t, running);
- buf_set_next(state_buf, uint64_t, next_client_id);
- buf_set_next(state_buf, uint64_t, next_modify_id);
-
- /* Tell the program how large the marshalled client list is and how any clients are marshalled. */
- buf_set_next(state_buf, size_t, list_size);
- buf_set_next(state_buf, size_t, list_elements);
-
- /* Marshal the clients. */
- foreach_linked_list_node (client_list, node)
- {
- /* Get the memory address of the client. */
- size_t value_address = client_list.values[node];
- /* Get the client's information. */
- client_t* value = (client_t*)(void*)value_address;
-
- /* Marshal the address, it is used the the client list and the client map, that will be marshalled. */
- buf_set_next(state_buf, size_t, value_address);
- /* Marshal the client informationation. */
- state_buf += client_marshal(value, state_buf) / sizeof(char);
- }
-
- /* Marshal the client list. */
- linked_list_marshal(&client_list, state_buf);
- state_buf += list_size / sizeof(char);
- /* Marshal the client map. */
- fd_table_marshal(&client_map, state_buf);
-
-
- /* Release resources. */
- foreach_linked_list_node (client_list, node)
- {
- client_t* client = (client_t*)(void*)(client_list.values[node]);
- client_destroy(client);
- }
- fd_table_destroy(&client_map, NULL, NULL);
- linked_list_destroy(&client_list);
-
- return 0;
+ size_t list_size = linked_list_marshal_size(&client_list);
+ size_t list_elements = 0;
+ ssize_t node;
+ size_t value_address;
+ client_t *value, *client;
+
+
+ /* Release resources. */
+ pthread_mutex_destroy(&slave_mutex);
+ pthread_cond_destroy(&slave_cond);
+ pthread_mutex_destroy(&modify_mutex);
+ pthread_cond_destroy(&modify_cond);
+ hash_table_destroy(&modify_map, NULL, NULL);
+
+
+ /* Count the number of clients that online. */
+ foreach_linked_list_node (client_list, node)
+ list_elements++;
+
+ /* Tell the new version of the program what version of the program it is marshalling. */
+ buf_set_next(state_buf, int, MDS_SERVER_VARS_VERSION);
+
+ /* Marshal the miscellaneous state data. */
+ buf_set_next(state_buf, sig_atomic_t, running);
+ buf_set_next(state_buf, uint64_t, next_client_id);
+ buf_set_next(state_buf, uint64_t, next_modify_id);
+
+ /* Tell the program how large the marshalled client list is and how any clients are marshalled. */
+ buf_set_next(state_buf, size_t, list_size);
+ buf_set_next(state_buf, size_t, list_elements);
+
+ /* Marshal the clients. */
+ foreach_linked_list_node (client_list, node) {
+ /* Get the memory address of the client. */
+ value_address = client_list.values[node];
+ /* Get the client's information. */
+ value = (void *)value_address;
+
+ /* Marshal the address, it is used the the client list and the client map, that will be marshalled. */
+ buf_set_next(state_buf, size_t, value_address);
+ /* Marshal the client informationation. */
+ state_buf += client_marshal(value, state_buf) / sizeof(char);
+ }
+
+ /* Marshal the client list. */
+ linked_list_marshal(&client_list, state_buf);
+ state_buf += list_size / sizeof(char);
+ /* Marshal the client map. */
+ fd_table_marshal(&client_map, state_buf);
+
+
+ /* Release resources. */
+ foreach_linked_list_node (client_list, node) {
+ client = (void *)(client_list.values[node]);
+ client_destroy(client);
+ }
+ fd_table_destroy(&client_map, NULL, NULL);
+ linked_list_destroy(&client_list);
+
+ return 0;
}
@@ -154,9 +155,10 @@ static hash_table_t unmarshal_remap_map;
* @param old The old address
* @return The new address
*/
-static size_t unmarshal_remapper(size_t old)
+static size_t
+unmarshal_remapper(size_t old)
{
- return hash_table_get(&unmarshal_remap_map, old);
+ return hash_table_get(&unmarshal_remap_map, old);
}
@@ -170,131 +172,126 @@ static size_t unmarshal_remapper(size_t old)
* @param state_buf The marshalled data that as not been read already
* @return Non-zero on error
*/
-int unmarshal_server(char* state_buf)
+int
+unmarshal_server(char *state_buf)
{
- int with_error = 0;
- size_t list_size;
- size_t list_elements;
- size_t i;
- ssize_t node;
- pthread_t slave_thread;
-
-#define fail soft_fail
+ int with_error = 0;
+ size_t list_size;
+ size_t list_elements;
+ size_t i;
+ ssize_t node;
+ pthread_t slave_thread;
+ size_t n, value_address, new_address;
+ client_t *value, *client;
+ int slave_fd;
- /* Create memory address remapping table. */
- fail_if (hash_table_create(&unmarshal_remap_map));
+#define fail soft_fail
+
+ /* Create memory address remapping table. */
+ fail_if (hash_table_create(&unmarshal_remap_map));
#undef fail
-#define fail clients_fail
-
- /* Get the marshal protocal version. Not needed, there is only the one version right now. */
- /* buf_get(state_buf, int, 0, MDS_SERVER_VARS_VERSION); */
- buf_next(state_buf, int, 1);
+#define fail clients_fail
- /* Unmarshal the miscellaneous state data. */
- buf_get_next(state_buf, sig_atomic_t, running);
- buf_get_next(state_buf, uint64_t, next_client_id);
- buf_get_next(state_buf, uint64_t, next_modify_id);
-
- /* Get the marshalled size of the client list and how any clients that are marshalled. */
- buf_get_next(state_buf, size_t, list_size);
- buf_get_next(state_buf, size_t, list_elements);
-
- /* Unmarshal the clients. */
- for (i = 0; i < list_elements; i++)
- {
- size_t n;
- size_t value_address;
- client_t* value;
-
- /* Allocate the client's information. */
- fail_if (xmalloc(value, 1, client_t));
-
- /* Unmarshal the address, it is used the the client list and the client map, that are also marshalled. */
- buf_get_next(state_buf, size_t, value_address);
- /* Unmarshal the client information. */
- fail_if (n = client_unmarshal(value, state_buf), n == 0);
-
- /* Populate the remapping table. */
- if (hash_table_put(&unmarshal_remap_map, value_address, (size_t)(void*)value) == 0)
- fail_if (errno);
-
- /* Delayed seeking. */
- state_buf += n / sizeof(char);
-
-
- /* On error, seek past all clients. */
- continue;
- clients_fail:
- xperror(*argv);
- with_error = 1;
- if (value != NULL)
- {
- buf_prev(state_buf, size_t, 1);
- free(value);
+ /* Get the marshal protocal version. Not needed, there is only the one version right now. */
+ /* buf_get(state_buf, int, 0, MDS_SERVER_VARS_VERSION); */
+ buf_next(state_buf, int, 1);
+
+ /* Unmarshal the miscellaneous state data. */
+ buf_get_next(state_buf, sig_atomic_t, running);
+ buf_get_next(state_buf, uint64_t, next_client_id);
+ buf_get_next(state_buf, uint64_t, next_modify_id);
+
+ /* Get the marshalled size of the client list and how any clients that are marshalled. */
+ buf_get_next(state_buf, size_t, list_size);
+ buf_get_next(state_buf, size_t, list_elements);
+
+ /* Unmarshal the clients. */
+ for (i = 0; i < list_elements; i++) {
+ /* Allocate the client's information. */
+ fail_if (xmalloc(value, 1, client_t));
+
+ /* Unmarshal the address, it is used the the client list and the client map, that are also marshalled. */
+ buf_get_next(state_buf, size_t, value_address);
+ /* Unmarshal the client information. */
+ fail_if (n = client_unmarshal(value, state_buf), n == 0);
+
+ /* Populate the remapping table. */
+ if (!hash_table_put(&unmarshal_remap_map, value_address, (size_t)(void *)value))
+ fail_if (errno);
+
+ /* Delayed seeking. */
+ state_buf += n / sizeof(char);
+
+ /* On error, seek past all clients. */
+ continue;
+ clients_fail:
+ xperror(*argv);
+ with_error = 1;
+ if (value) {
+ buf_prev(state_buf, size_t, 1);
+ free(value);
+ }
+ for (; i < list_elements; i++)
+ /* There is not need to close the sockets, it is done by
+ the caller because there are conditions where we cannot
+ get here anyway. */
+ state_buf += client_unmarshal_skip(state_buf) / sizeof(char);
+ break;
}
- for (; i < list_elements; i++)
- /* There is not need to close the sockets, it is done by
- the caller because there are conditions where we cannot
- get here anyway. */
- state_buf += client_unmarshal_skip(state_buf) / sizeof(char);
- break;
- }
-
+
#undef fail
#define fail critical_fail
-
- /* Unmarshal the client list. */
- fail_if (linked_list_unmarshal(&client_list, state_buf));
- state_buf += list_size / sizeof(char);
-
- /* Unmarshal the client map. */
- fail_if (fd_table_unmarshal(&client_map, state_buf, unmarshal_remapper));
-
- /* Remove non-found elements from the fd table. */
-#define __bit(I, _OP_) client_map.used[I / 64] _OP_ ((uint64_t)1 << (I % 64))
- if (with_error)
- for (i = 0; i < client_map.capacity; i++)
- if ((__bit(i, &)) && (client_map.values[i] == 0))
- /* Lets not presume that fd-table actually initialise its allocations. */
- __bit(i, &= ~);
+
+ /* Unmarshal the client list. */
+ fail_if (linked_list_unmarshal(&client_list, state_buf));
+ state_buf += list_size / sizeof(char);
+
+ /* Unmarshal the client map. */
+ fail_if (fd_table_unmarshal(&client_map, state_buf, unmarshal_remapper));
+
+ /* Remove non-found elements from the fd table. */
+#define __bit(I, _OP_) (client_map.used[I / 64] _OP_ ((uint64_t)1 << (I % 64)))
+ if (with_error)
+ for (i = 0; i < client_map.capacity; i++)
+ if (__bit(i, &) && !client_map.values[i])
+ /* Lets not presume that fd-table actually initialise its allocations. */
+ __bit(i, &= ~);
#undef __bit
-
- /* Remap the linked list and remove non-found elements, and start the clients. */
- foreach_linked_list_node (client_list, node)
- {
- /* Remap the linked list and remove non-found elements. */
- size_t new_address = unmarshal_remapper(client_list.values[node]);
- client_list.values[node] = new_address;
- if (new_address == 0) /* Returned if missing (or if the address is the invalid NULL.) */
- linked_list_remove(&client_list, node);
- else
- {
- /* Start the clients. (Errors do not need to be reported.) */
- client_t* client = (client_t*)(void*)new_address;
- int slave_fd = client->socket_fd;
-
- /* Increase number of running slaves. */
- with_mutex (slave_mutex, running_slaves++;);
-
- /* Start slave thread. */
- create_slave(&slave_thread, slave_fd);
+
+ /* Remap the linked list and remove non-found elements, and start the clients. */
+ foreach_linked_list_node (client_list, node) {
+ /* Remap the linked list and remove non-found elements. */
+ new_address = unmarshal_remapper(client_list.values[node]);
+ client_list.values[node] = new_address;
+ if (new_address == 0) { /* Returned if missing (or if the address is the invalid NULL.) */
+ linked_list_remove(&client_list, node);
+ } else {
+ /* Start the clients. (Errors do not need to be reported.) */
+ client = (client_t*)(void*)new_address;
+ slave_fd = client->socket_fd;
+
+ /* Increase number of running slaves. */
+ with_mutex (slave_mutex, running_slaves++;);
+
+ /* Start slave thread. */
+ create_slave(&slave_thread, slave_fd);
+ }
}
- }
-
- /* Release the remapping table's resources. */
- hash_table_destroy(&unmarshal_remap_map, NULL, NULL);
-
- return with_error;
+
+ /* Release the remapping table's resources. */
+ hash_table_destroy(&unmarshal_remap_map, NULL, NULL);
+
+ return with_error;
#undef fail
-
- soft_fail:
- xperror(*argv);
- hash_table_destroy(&unmarshal_remap_map, NULL, NULL);
- return -1;
- critical_fail:
- xperror(*argv);
- abort();
+
+soft_fail:
+ xperror(*argv);
+ hash_table_destroy(&unmarshal_remap_map, NULL, NULL);
+ return -1;
+critical_fail:
+ xperror(*argv);
+ abort();
}
@@ -304,10 +301,10 @@ int unmarshal_server(char* state_buf)
*
* @return Non-zero on error
*/
-int reexec_failure_recover(void)
+int
+reexec_failure_recover(void)
{
- /* Close all files (hopefully sockets) we do not know what they are. */
- close_files((fd > 2) && (fd != socket_fd) && (fd_table_contains_key(&client_map, fd) == 0));
- return 0;
+ /* Close all files (hopefully sockets) we do not know what they are. */
+ close_files(fd > 2 && fd != socket_fd && !fd_table_contains_key(&client_map, fd));
+ return 0;
}
-