static int php_memc_sess_lock(memcached_st *memc, const char *key)
{
char *lock_key = NULL;
int lock_key_len = 0;
unsigned long attempts;
long write_retry_attempts = 0;
long lock_maxwait = MEMC_G(sess_lock_max_wait);
long lock_wait = MEMC_G(sess_lock_wait);
long lock_expire = MEMC_G(sess_lock_expire);
time_t expiration;
memcached_return status;
/* set max timeout for session_start = max_execution_time. (c) Andrei Darashenka, Richter & Poweleit GmbH */
if (lock_maxwait <= 0) {
lock_maxwait = zend_ini_long(ZEND_STRS("max_execution_time"), 0);
if (lock_maxwait <= 0) {
lock_maxwait = MEMC_SESS_LOCK_EXPIRATION;
}
}
if (lock_wait == 0) {
lock_wait = MEMC_SESS_DEFAULT_LOCK_WAIT;
}
if (lock_expire <= 0) {
lock_expire = lock_maxwait;
}
expiration = lock_expire + 1;
attempts = (unsigned long)((1000000.0 / lock_wait) * lock_maxwait);
/* Set the number of write retry attempts to the number of replicas times the number of attempts to remove a server */
if (MEMC_G(sess_remove_failed_enabled)) {
write_retry_attempts = MEMC_G(sess_number_of_replicas) * ( memcached_behavior_get(memc, MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT) + 1);
}
lock_key_len = spprintf(&lock_key, 0, "lock.%s", key);
do {
status = memcached_add(memc, lock_key, lock_key_len, "1", sizeof("1")-1, expiration, 0);
if (status == MEMCACHED_SUCCESS) {
MEMC_G(sess_locked) = 1;
MEMC_G(sess_lock_key) = lock_key;
MEMC_G(sess_lock_key_len) = lock_key_len;
return 0;
} else if (status != MEMCACHED_NOTSTORED && status != MEMCACHED_DATA_EXISTS) {
if (write_retry_attempts > 0) {
write_retry_attempts--;
continue;
}
php_error_docref(NULL, E_WARNING, "Write of lock failed");
break;
}
if (lock_wait > 0) {
usleep(lock_wait);
}
} while(--attempts > 0);
efree(lock_key);
return -1;
}
static
time_t s_lock_expiration()
{
if (MEMC_SESS_INI(lock_expiration) > 0) {
return s_adjust_expiration(MEMC_SESS_INI(lock_expiration));
}
else {
zend_long max_execution_time = zend_ini_long(ZEND_STRL("max_execution_time"), 0);
if (max_execution_time > 0) {
return s_adjust_expiration(max_execution_time);
}
}
return 0;
}
ps_module ps_mod_memcached = {
PS_MOD(memcached)
};
static int php_memc_sess_lock(memcached_st *memc, const char *key TSRMLS_DC)
{
char *lock_key = NULL;
int lock_key_len = 0;
long attempts;
long lock_maxwait;
long lock_wait = MEMC_G(sess_lock_wait);
time_t expiration;
memcached_return status;
/* set max timeout for session_start = max_execution_time. (c) Andrei Darashenka, Richter & Poweleit GmbH */
lock_maxwait = zend_ini_long(ZEND_STRS("max_execution_time"), 0);
if (lock_maxwait <= 0) {
lock_maxwait = MEMC_SESS_LOCK_EXPIRATION;
}
if (lock_wait == 0) {
lock_wait = MEMC_SESS_DEFAULT_LOCK_WAIT;
}
expiration = time(NULL) + lock_maxwait + 1;
attempts = lock_maxwait * 1000000 / lock_wait;
lock_key_len = spprintf(&lock_key, 0, "lock.%s", key);
do {
status = memcached_add(memc, lock_key, lock_key_len, "1", sizeof("1")-1, expiration, 0);
if (status == MEMCACHED_SUCCESS) {
MEMC_G(sess_locked) = 1;
MEMC_G(sess_lock_key) = lock_key;
