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diff --git a/exec/sync.c b/exec/sync.c
index 283634a8..172b6214 100644
--- a/exec/sync.c
+++ b/exec/sync.c
@@ -1,628 +1,543 @@
/*
* Copyright (c) 2009-2012 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Steven Dake (sdake@redhat.com)
*
* This software licensed under BSD license, the text of which follows:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the MontaVista Software, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <sys/uio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <time.h>
#include <arpa/inet.h>
#include <corosync/corotypes.h>
#include <corosync/swab.h>
#include <corosync/totem/totempg.h>
#include <corosync/totem/totem.h>
#include <corosync/logsys.h>
#include <qb/qbipc_common.h>
#include "schedwrk.h"
#include "quorum.h"
#include "sync.h"
#include "main.h"
LOGSYS_DECLARE_SUBSYS ("SYNC");
#define MESSAGE_REQ_SYNC_BARRIER 0
#define MESSAGE_REQ_SYNC_SERVICE_BUILD 1
-#define MESSAGE_REQ_SYNC_MEMB_DETERMINE 2
enum sync_process_state {
INIT,
PROCESS,
ACTIVATE
};
enum sync_state {
SYNC_SERVICELIST_BUILD,
SYNC_PROCESS,
SYNC_BARRIER
};
struct service_entry {
int service_id;
void (*sync_init) (
const unsigned int *trans_list,
size_t trans_list_entries,
const unsigned int *member_list,
size_t member_list_entries,
const struct memb_ring_id *ring_id);
void (*sync_abort) (void);
int (*sync_process) (void);
void (*sync_activate) (void);
enum sync_process_state state;
char name[128];
};
struct processor_entry {
int nodeid;
int received;
};
-struct req_exec_memb_determine_message {
- struct qb_ipc_request_header header __attribute__((aligned(8)));
- struct memb_ring_id ring_id __attribute__((aligned(8)));
-};
-
struct req_exec_service_build_message {
struct qb_ipc_request_header header __attribute__((aligned(8)));
struct memb_ring_id ring_id __attribute__((aligned(8)));
int service_list_entries __attribute__((aligned(8)));
int service_list[128] __attribute__((aligned(8)));
};
struct req_exec_barrier_message {
struct qb_ipc_request_header header __attribute__((aligned(8)));
struct memb_ring_id ring_id __attribute__((aligned(8)));
};
static enum sync_state my_state = SYNC_BARRIER;
static struct memb_ring_id my_ring_id;
-static struct memb_ring_id my_memb_determine_ring_id;
-
-static int my_memb_determine = 0;
-
-static unsigned int my_memb_determine_list[PROCESSOR_COUNT_MAX];
-
-static unsigned int my_memb_determine_list_entries = 0;
-
static int my_processing_idx = 0;
static hdb_handle_t my_schedwrk_handle;
static struct processor_entry my_processor_list[PROCESSOR_COUNT_MAX];
static unsigned int my_member_list[PROCESSOR_COUNT_MAX];
static unsigned int my_trans_list[PROCESSOR_COUNT_MAX];
static size_t my_member_list_entries = 0;
static size_t my_trans_list_entries = 0;
static int my_processor_list_entries = 0;
static struct service_entry my_service_list[SERVICES_COUNT_MAX];
static int my_service_list_entries = 0;
static void (*sync_synchronization_completed) (void);
static void sync_deliver_fn (
unsigned int nodeid,
const void *msg,
unsigned int msg_len,
int endian_conversion_required);
static int schedwrk_processor (const void *context);
static void sync_process_enter (void);
static struct totempg_group sync_group = {
.group = "sync",
.group_len = 4
};
static void *sync_group_handle;
int (*my_sync_callbacks_retrieve) (
int service_id,
struct sync_callbacks *callbacks);
int sync_init (
int (*sync_callbacks_retrieve) (
int service_id,
struct sync_callbacks *callbacks),
void (*synchronization_completed) (void))
{
unsigned int res;
res = totempg_groups_initialize (
&sync_group_handle,
sync_deliver_fn,
NULL);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR,
"Couldn't initialize groups interface.");
return (-1);
}
res = totempg_groups_join (
sync_group_handle,
&sync_group,
1);
if (res == -1) {
log_printf (LOGSYS_LEVEL_ERROR, "Couldn't join group.");
return (-1);
}
sync_synchronization_completed = synchronization_completed;
my_sync_callbacks_retrieve = sync_callbacks_retrieve;
return (0);
}
static void sync_barrier_handler (unsigned int nodeid, const void *msg)
{
const struct req_exec_barrier_message *req_exec_barrier_message = msg;
int i;
int barrier_reached = 1;
if (memcmp (&my_ring_id, &req_exec_barrier_message->ring_id,
sizeof (struct memb_ring_id)) != 0) {
log_printf (LOGSYS_LEVEL_DEBUG, "barrier for old ring - discarding");
return;
}
for (i = 0; i < my_processor_list_entries; i++) {
if (my_processor_list[i].nodeid == nodeid) {
my_processor_list[i].received = 1;
}
}
for (i = 0; i < my_processor_list_entries; i++) {
if (my_processor_list[i].received == 0) {
barrier_reached = 0;
}
}
if (barrier_reached) {
log_printf (LOGSYS_LEVEL_DEBUG, "Committing synchronization for %s",
my_service_list[my_processing_idx].name);
my_service_list[my_processing_idx].state = ACTIVATE;
if (my_sync_callbacks_retrieve(my_service_list[my_processing_idx].service_id, NULL) != -1) {
my_service_list[my_processing_idx].sync_activate ();
}
my_processing_idx += 1;
if (my_service_list_entries == my_processing_idx) {
- my_memb_determine_list_entries = 0;
sync_synchronization_completed ();
} else {
sync_process_enter ();
}
}
}
static void dummy_sync_init (
const unsigned int *trans_list,
size_t trans_list_entries,
const unsigned int *member_list,
size_t member_list_entries,
const struct memb_ring_id *ring_id)
{
}
static void dummy_sync_abort (void)
{
}
static int dummy_sync_process (void)
{
return (0);
}
static void dummy_sync_activate (void)
{
}
static int service_entry_compare (const void *a, const void *b)
{
const struct service_entry *service_entry_a = a;
const struct service_entry *service_entry_b = b;
return (service_entry_a->service_id > service_entry_b->service_id);
}
-static void sync_memb_determine (unsigned int nodeid, const void *msg)
-{
- const struct req_exec_memb_determine_message *req_exec_memb_determine_message = msg;
- int found = 0;
- int i;
-
- if (memcmp (&req_exec_memb_determine_message->ring_id,
- &my_memb_determine_ring_id, sizeof (struct memb_ring_id)) != 0) {
-
- log_printf (LOGSYS_LEVEL_DEBUG, "memb determine for old ring - discarding");
- return;
- }
-
- my_memb_determine = 1;
- for (i = 0; i < my_memb_determine_list_entries; i++) {
- if (my_memb_determine_list[i] == nodeid) {
- found = 1;
- }
- }
- if (found == 0) {
- my_memb_determine_list[my_memb_determine_list_entries] = nodeid;
- my_memb_determine_list_entries += 1;
- }
-}
-
static void sync_service_build_handler (unsigned int nodeid, const void *msg)
{
const struct req_exec_service_build_message *req_exec_service_build_message = msg;
int i, j;
int barrier_reached = 1;
int found;
int qsort_trigger = 0;
if (memcmp (&my_ring_id, &req_exec_service_build_message->ring_id,
sizeof (struct memb_ring_id)) != 0) {
log_printf (LOGSYS_LEVEL_DEBUG, "service build for old ring - discarding");
return;
}
for (i = 0; i < req_exec_service_build_message->service_list_entries; i++) {
found = 0;
for (j = 0; j < my_service_list_entries; j++) {
if (req_exec_service_build_message->service_list[i] ==
my_service_list[j].service_id) {
found = 1;
break;
}
}
if (found == 0) {
my_service_list[my_service_list_entries].state =
INIT;
my_service_list[my_service_list_entries].service_id =
req_exec_service_build_message->service_list[i];
sprintf (my_service_list[my_service_list_entries].name,
"Unknown External Service (id = %d)\n",
req_exec_service_build_message->service_list[i]);
my_service_list[my_service_list_entries].sync_init =
dummy_sync_init;
my_service_list[my_service_list_entries].sync_abort =
dummy_sync_abort;
my_service_list[my_service_list_entries].sync_process =
dummy_sync_process;
my_service_list[my_service_list_entries].sync_activate =
dummy_sync_activate;
my_service_list_entries += 1;
qsort_trigger = 1;
}
}
if (qsort_trigger) {
qsort (my_service_list, my_service_list_entries,
sizeof (struct service_entry), service_entry_compare);
}
for (i = 0; i < my_processor_list_entries; i++) {
if (my_processor_list[i].nodeid == nodeid) {
my_processor_list[i].received = 1;
}
}
for (i = 0; i < my_processor_list_entries; i++) {
if (my_processor_list[i].received == 0) {
barrier_reached = 0;
}
}
if (barrier_reached) {
sync_process_enter ();
}
}
static void sync_deliver_fn (
unsigned int nodeid,
const void *msg,
unsigned int msg_len,
int endian_conversion_required)
{
struct qb_ipc_request_header *header = (struct qb_ipc_request_header *)msg;
switch (header->id) {
case MESSAGE_REQ_SYNC_BARRIER:
sync_barrier_handler (nodeid, msg);
break;
case MESSAGE_REQ_SYNC_SERVICE_BUILD:
sync_service_build_handler (nodeid, msg);
break;
- case MESSAGE_REQ_SYNC_MEMB_DETERMINE:
- sync_memb_determine (nodeid, msg);
- break;
}
}
-static void memb_determine_message_transmit (void)
-{
- struct iovec iovec;
- struct req_exec_memb_determine_message req_exec_memb_determine_message;
-
- req_exec_memb_determine_message.header.size = sizeof (struct req_exec_memb_determine_message);
- req_exec_memb_determine_message.header.id = MESSAGE_REQ_SYNC_MEMB_DETERMINE;
-
- memcpy (&req_exec_memb_determine_message.ring_id,
- &my_memb_determine_ring_id,
- sizeof (struct memb_ring_id));
-
- iovec.iov_base = (char *)&req_exec_memb_determine_message;
- iovec.iov_len = sizeof (req_exec_memb_determine_message);
-
- (void)totempg_groups_mcast_joined (sync_group_handle,
- &iovec, 1, TOTEMPG_AGREED);
-}
-
static void barrier_message_transmit (void)
{
struct iovec iovec;
struct req_exec_barrier_message req_exec_barrier_message;
req_exec_barrier_message.header.size = sizeof (struct req_exec_barrier_message);
req_exec_barrier_message.header.id = MESSAGE_REQ_SYNC_BARRIER;
memcpy (&req_exec_barrier_message.ring_id, &my_ring_id,
sizeof (struct memb_ring_id));
iovec.iov_base = (char *)&req_exec_barrier_message;
iovec.iov_len = sizeof (req_exec_barrier_message);
(void)totempg_groups_mcast_joined (sync_group_handle,
&iovec, 1, TOTEMPG_AGREED);
}
static void service_build_message_transmit (struct req_exec_service_build_message *service_build_message)
{
struct iovec iovec;
service_build_message->header.size = sizeof (struct req_exec_service_build_message);
service_build_message->header.id = MESSAGE_REQ_SYNC_SERVICE_BUILD;
memcpy (&service_build_message->ring_id, &my_ring_id,
sizeof (struct memb_ring_id));
iovec.iov_base = (void *)service_build_message;
iovec.iov_len = sizeof (struct req_exec_service_build_message);
(void)totempg_groups_mcast_joined (sync_group_handle,
&iovec, 1, TOTEMPG_AGREED);
}
static void sync_barrier_enter (void)
{
my_state = SYNC_BARRIER;
barrier_message_transmit ();
}
static void sync_process_enter (void)
{
int i;
my_state = SYNC_PROCESS;
/*
* No sync services
*/
if (my_service_list_entries == 0) {
my_state = SYNC_SERVICELIST_BUILD;
- my_memb_determine_list_entries = 0;
sync_synchronization_completed ();
return;
}
for (i = 0; i < my_processor_list_entries; i++) {
my_processor_list[i].received = 0;
}
schedwrk_create (&my_schedwrk_handle,
schedwrk_processor,
NULL);
}
static void sync_servicelist_build_enter (
const unsigned int *member_list,
size_t member_list_entries,
const struct memb_ring_id *ring_id)
{
struct req_exec_service_build_message service_build;
int i;
int res;
struct sync_callbacks sync_callbacks;
my_state = SYNC_SERVICELIST_BUILD;
for (i = 0; i < member_list_entries; i++) {
my_processor_list[i].nodeid = member_list[i];
my_processor_list[i].received = 0;
}
my_processor_list_entries = member_list_entries;
memcpy (my_member_list, member_list,
member_list_entries * sizeof (unsigned int));
my_member_list_entries = member_list_entries;
my_processing_idx = 0;
memset(my_service_list, 0, sizeof (struct service_entry) * SERVICES_COUNT_MAX);
my_service_list_entries = 0;
for (i = 0; i < SERVICES_COUNT_MAX; i++) {
res = my_sync_callbacks_retrieve (i, &sync_callbacks);
if (res == -1) {
continue;
}
if (sync_callbacks.sync_init == NULL) {
continue;
}
my_service_list[my_service_list_entries].state = INIT;
my_service_list[my_service_list_entries].service_id = i;
strcpy (my_service_list[my_service_list_entries].name,
sync_callbacks.name);
my_service_list[my_service_list_entries].sync_init = sync_callbacks.sync_init;
my_service_list[my_service_list_entries].sync_process = sync_callbacks.sync_process;
my_service_list[my_service_list_entries].sync_abort = sync_callbacks.sync_abort;
my_service_list[my_service_list_entries].sync_activate = sync_callbacks.sync_activate;
my_service_list_entries += 1;
}
for (i = 0; i < my_service_list_entries; i++) {
service_build.service_list[i] =
my_service_list[i].service_id;
}
service_build.service_list_entries = my_service_list_entries;
service_build_message_transmit (&service_build);
}
static int schedwrk_processor (const void *context)
{
int res = 0;
if (my_service_list[my_processing_idx].state == INIT) {
unsigned int old_trans_list[PROCESSOR_COUNT_MAX];
size_t old_trans_list_entries = 0;
int o, m;
my_service_list[my_processing_idx].state = PROCESS;
memcpy (old_trans_list, my_trans_list, my_trans_list_entries *
sizeof (unsigned int));
old_trans_list_entries = my_trans_list_entries;
my_trans_list_entries = 0;
for (o = 0; o < old_trans_list_entries; o++) {
for (m = 0; m < my_member_list_entries; m++) {
if (old_trans_list[o] == my_member_list[m]) {
my_trans_list[my_trans_list_entries] = my_member_list[m];
my_trans_list_entries++;
break;
}
}
}
if (my_sync_callbacks_retrieve(my_service_list[my_processing_idx].service_id, NULL) != -1) {
my_service_list[my_processing_idx].sync_init (my_trans_list,
my_trans_list_entries, my_member_list,
my_member_list_entries,
&my_ring_id);
}
}
if (my_service_list[my_processing_idx].state == PROCESS) {
my_service_list[my_processing_idx].state = PROCESS;
if (my_sync_callbacks_retrieve(my_service_list[my_processing_idx].service_id, NULL) != -1) {
res = my_service_list[my_processing_idx].sync_process ();
} else {
res = 0;
}
if (res == 0) {
sync_barrier_enter();
} else {
return (-1);
}
}
return (0);
}
void sync_start (
const unsigned int *member_list,
size_t member_list_entries,
const struct memb_ring_id *ring_id)
{
ENTER();
memcpy (&my_ring_id, ring_id, sizeof (struct memb_ring_id));
- if (my_memb_determine) {
- my_memb_determine = 0;
- sync_servicelist_build_enter (my_memb_determine_list,
- my_memb_determine_list_entries, ring_id);
- } else {
- sync_servicelist_build_enter (member_list, member_list_entries,
- ring_id);
- }
+ sync_servicelist_build_enter (member_list, member_list_entries,
+ ring_id);
}
void sync_save_transitional (
const unsigned int *member_list,
size_t member_list_entries,
const struct memb_ring_id *ring_id)
{
ENTER();
memcpy (my_trans_list, member_list, member_list_entries *
sizeof (unsigned int));
my_trans_list_entries = member_list_entries;
}
void sync_abort (void)
{
ENTER();
if (my_state == SYNC_PROCESS) {
schedwrk_destroy (my_schedwrk_handle);
if (my_sync_callbacks_retrieve(my_service_list[my_processing_idx].service_id, NULL) != -1) {
my_service_list[my_processing_idx].sync_abort ();
}
}
/* this will cause any "old" barrier messages from causing
* problems.
*/
memset (&my_ring_id, 0, sizeof (struct memb_ring_id));
}
-
-void sync_memb_list_determine (const struct memb_ring_id *ring_id)
-{
- ENTER();
- memcpy (&my_memb_determine_ring_id, ring_id,
- sizeof (struct memb_ring_id));
-
- memb_determine_message_transmit ();
-}
-
-void sync_memb_list_abort (void)
-{
- ENTER();
- my_memb_determine_list_entries = 0;
- memset (&my_memb_determine_ring_id, 0, sizeof (struct memb_ring_id));
-}

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