public function write($key, $value)
{
if ($this->shmId) {
return shm_put_var($this->shmId, $key, $value);
}
return false;
}
function Map2GE($x, $y)
{
if (0) {
$SHM_KEY = ftok(__FILE__, chr(4));
$data = shm_attach($SHM_KEY, 102400, 0666);
$result = shm_get_var($data, 1);
$r = $result[$x][$y];
if (isset($r)) {
shm_detach($data);
return $r;
}
}
// ×¥¿
$r = t67to97($x, $y);
$x = $r[0];
$y = $r[1];
$proj = "proj -I +proj=tmerc +ellps=aust_SA +lon_0=121 +x_0=250000 +k=0.9999";
$ret = shell_exec("echo {$x} {$y} | {$proj}");
if (preg_match("/(\\d+)d(\\d+)'([\\d.]+)\"E\\s+(\\d+)d(\\d+)'([\\d.]+)\"N/", $ret, $matches)) {
list($junk, $ed, $em, $es, $nd, $nm, $ns) = $matches;
$r[0] = $ed + $em / 60 + $es / 3600;
$r[1] = $nd + $nm / 60 + $ns / 3600;
if (0) {
$result[$x][$y] = $r;
shm_put_var($data, 1, $result);
shm_detach($data);
}
return $r;
}
return FALSE;
// exit;
}
public function set($key, $value, $no_cas = false)
{
if (!$this->isOpen()) {
$this->open();
}
$this->enterCriticalSection($this->ipckey);
$this->debug("SHM set: {$key} = {$value}");
$key = strtolower($key);
$idx = $this->props[$key];
if (!$no_cas && shm_has_var($this->shm, $idx) && !empty($this->hashes[$key])) {
$var = shm_get_var($this->shm, $idx);
$check = md5($var);
if ($this->hashes[$key] == $check) {
$this->debug("CAS check: Key not modified: {$key}");
shm_put_var($this->shm, $idx, $value);
$ok = true;
} else {
$this->debug("CAS check: Key modified, write blocked: {$key}");
$ok = false;
}
} else {
$this->debug("CAS check: Check disabled for set: {$key}");
$ok = true;
shm_put_var($this->shm, $idx, $value);
}
if ($ok) {
$hash = md5($value);
$this->hashes[$key] = $hash;
$this->debug("CAS hash for {$key} is now {$hash}");
}
$this->leaveCriticalSection();
return $ok;
}
/**
* @return IdValue
*/
public function generate()
{
$timestamp = $this->generateTimestamp();
// Acquire semaphore
$semaphore = sem_get($this->semaphoreId);
sem_acquire($semaphore);
// Attach shared memory
$memory = shm_attach(self::SHM_KEY);
$sequence = 0;
if (!is_null($this->lastTimestamp) && $timestamp->equals($this->lastTimestamp)) {
// Get
$sequence = shm_get_var($memory, self::SHM_SEQUENCE) + 1 & $this->config->getSequenceMask();
// Increment sequence
shm_put_var($memory, self::SHM_SEQUENCE, $sequence);
if ($sequence === 0) {
usleep(1000);
$timestamp = $this->generateTimestamp();
}
} else {
// Reset sequence if timestamp is different from last one.
$sequence = 0;
shm_put_var($memory, self::SHM_SEQUENCE, $sequence);
}
// Detach shared memory
shm_detach($memory);
// Release semaphore
sem_release($semaphore);
// Update lastTimestamp
$this->lastTimestamp = $timestamp;
return new IdValue($timestamp, $this->regionId, $this->serverId, $sequence, $this->calculate($timestamp, $this->regionId, $this->serverId, $sequence));
}
/**
* (non-PHPdoc)
* @see Lexik\Bundle\MaintenanceBundle\Drivers.AbstractDriver::createLock()
*/
protected function createLock()
{
if ($this->shmId) {
return shm_put_var($this->shmId, self::VARIABLE_KEY, self::VALUE_TO_STORE);
}
return false;
}
/**
* 通过本机共享内存件来生成一个auto_increment序列
*
* 序列类似MySQL的auto_increment
*
* @access private
* @param void
* @return mixed
*/
function getNextValueByShareMemory()
{
$addr = '127.0.0.1';
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$addr = $_SERVER['HTTP_X_FORWARDED_FOR'];
} elseif (!empty($_SERVER['SERVER_ADDR'])) {
$addr = $_SERVER['SERVER_ADDR'];
}
$skey = 'global_serial_generator_seed_' . $addr;
$ikey = crc32($skey);
$sem = $shm = null;
$retry_times = 1;
do {
$sem = sem_get($ikey, 1, 0777);
$shm = shm_attach($ikey, 128, 0777);
if (is_resource($sem) && is_resource($shm)) {
break;
}
$cmd = "ipcrm -M 0x00000000; ipcrm -S 0x00000000; ipcrm -M {$ikey} ; ipcrm -S {$ikey}";
$last_line = exec($cmd, $output, $retval);
} while ($retry_times-- > 0);
if (!sem_acquire($sem)) {
return false;
}
$next_value = false;
if (shm_has_var($shm, $ikey)) {
shm_put_var($shm, $ikey, $next_value = shm_get_var($shm, $ikey) + 1);
} else {
shm_put_var($shm, $ikey, $next_value = 1);
}
$shm && shm_detach($shm);
$sem && sem_release($sem);
return $next_value;
}
/**
* @param $key
* @param $value
* @param int $size
*/
public function set($key, $value, $size = 10000)
{
$result = $this->attach($key, $size);
sem_acquire($result['mutex']);
shm_put_var($result['shm'], $key, $value);
sem_release($result['mutex']);
}
/**
* @author Yohann Marillet
*/
public function put($key = 1, $value = true)
{
$res = shm_put_var($this->segment, $key, [$value]);
if (!$res) {
throw new \Exception('Cannot put data in semaphore');
}
return $this;
}
/**
* @see CachePeer::set()
*
* @return SysVCachePeer
*/
function set($key, $value, $ttl = CacheTtl::HOUR)
{
Assert::isNumeric($ttl);
if ($this->isAlive()) {
shm_put_var($this->getSegmentPtr(), $this->key2int($key), array(self::FIELD_EXPIRES => time() + $ttl, self::FIELD_DATA => $value));
}
return $this;
}
public function set()
{
$lock = $this->check();
if ($lock) {
throw new Exception('Core_Lock_Shm::set Failed. Existing Lock Detected from PID ' . $lock['pid']);
}
shm_put_var($this->shm, self::ADDRESS, array('pid' => $this->pid, 'time' => time()));
}
/**
* Set shared memory var
* @param $var
*/
public function set($var)
{
sem_acquire($this->__mutex);
//block until released
shm_put_var($this->__shm, $this->__key, $var);
//store var
sem_release($this->__mutex);
//release mutex
}
public function set($index, $value, $overwrite = false)
{
if ($overwrite || !shm_has_var($this->shm, $index) || $this->data[$index] == shm_get_var($this->shm, $index)) {
shm_put_var($this->shm, $index, $value);
return true;
} else {
return false;
}
}
/**
* if an error like "not enough shared memory left" occurs then set sysvshm.init_mem to a higher value
* Lock process without blocking.
* This method allow protect multiple process running and fast lock validation.
*
*/
public function lock()
{
$success = sem_acquire($this->_getSemIdentifier());
shm_put_var($this->_shmId, $this->getIndexerCodeCrc(), $this->_getMicrotimeString());
if (false === $success) {
Mage::throwException('FastIndexer: Cannot acquire semaphore lock!');
}
$this->_isLocked = true;
}
public static function store($key, $value)
{
self::getHandle();
if (!shm_put_var(self::$handle, self::getVarKey($key), $value)) {
sem_remove(self::$semaphore);
shm_remove(self::$handle);
die('couldn\'t write to shared memory.');
}
self::release();
}
public function run()
{
$this->synchronized(function ($thread) {
$thread->wait();
}, $this);
$counter = shm_get_var($this->shmid, 1);
$counter++;
shm_put_var($this->shmid, 1, $counter);
printf("Thread #%lu says: %s\n", $this->getThreadId(), $counter);
}
/**
* Put this segment's contents
*
* @param var data
* @param int permissions default 0666 permissions
* @return bool success
* @throws io.IOException in case an error occurs
*/
public function put($val, $permissions = 0666)
{
$v = [$val];
$h = shm_attach($this->spot, (strlen(serialize($v)) + 44) * 2, $permissions);
$ret = shm_put_var($h, $this->name, $v);
shm_detach($h);
if (false === $ret) {
throw new IOException('Could not write segment ' . $this->name);
}
return $ret;
}
public function __destruct()
{
if ($this->changed) {
if (shm_put_var($this->res, self::DEFAULT_VAR_ID, $this->data) === false) {
$length = strlen($this->data);
shm_remove($this->res);
$this->res = shm_attach($this->id, ceil($length * 1.25));
shm_put_var($this->res, self::DEFAULT_VAR_ID, $this->data);
}
}
shm_detach($this->res);
}
/**
* @param int $pid
*
* @return int
*/
private function readInc($pid)
{
$res = shm_attach($pid);
if (!shm_has_var($res, 0)) {
shm_put_var($res, 0, 0);
}
$inc = shm_get_var($res, 0);
if ($inc === 16777215) {
$inc = 0;
}
++$inc;
shm_put_var($res, 0, $inc);
return $inc;
}
public function put_var($varname, $value, $autolock = FALSE)
{
$varkey = $this->_gen_key($varname);
if ($autolock) {
sem_acquire($this->sem);
}
$result = shm_put_var($this->shm_id, $varkey, $value);
if ($autolock) {
sem_release($this->sem);
}
return $result;
// 写入失败：空间不够或其它异常，删除共内存中所有值
//if (!shm_remove($this->shm_id)) return FALSE;
//return shm_put_var($this->shm_id, $varkey, $value);
}
function squabble()
{
global $handle;
global $buffer;
$i = 0;
$pid = getmypid();
while (true) {
if (preg_match("/^{$pid}\\b/", shm_get_var($buffer, 1))) {
continue;
}
sem_acquire($handle);
$i++;
shm_put_var($buffer, 1, "{$pid} {$i}");
sem_release($handle);
}
}
public function run()
{
if ($this->mutex) {
$locked = Mutex::lock($this->mutex);
}
$counter = shm_get_var($this->shmid, 1);
$counter++;
shm_put_var($this->shmid, 1, $counter);
printf("Thread #%lu lock: %s says: %s\n", $this->getThreadId(), !empty($locked) ? "Y" : "N", $counter);
//$this->lock();
//$this->unlock();
if ($this->mutex) {
Mutex::unlock($this->mutex);
}
return true;
}
public function touch($key)
{
try {
$shm = shm_attach($this->id, self::SEGMENT_SIZE, HESPER_IPC_PERMS);
} catch (BaseException $e) {
return false;
}
try {
$result = shm_put_var($shm, $key, true);
shm_detach($shm);
} catch (BaseException $e) {
// not enough shared memory left, rotate it.
shm_detach($shm);
return $this->drop();
}
return $result;
}
function put($key, $value)
{
if (!is_numeric($key)) {
throw new Scalr_System_Exception(sprintf("key must be numeric. '%s' is given", $key));
}
// shm_get_var return false in case of non-existed key.
// We need a wrapper to store boolean values
if (is_bool($value)) {
$wrapper = new stdClass();
$wrapper->__shmWrapperClass = true;
$wrapper->value = $value;
$value = $wrapper;
}
if (!shm_put_var($this->shm, $key, $value)) {
throw new Scalr_System_Exception(sprintf("Cannot put key '%s' into shared memory", $key));
}
return true;
}
function SET($key, $value)
{
if (is_array($key)) {
return null;
}
if (!$this->ok) {
return null;
}
$array = $this->MyArray();
if (!is_array($array)) {
$array = array();
}
$array[$key] = $value;
if ($GLOBALS["LOGON-PAGE"]) {
error_log("[{$_SESSION["uid"]}]::@shm_put_var({$this->shmid},{$this->index},{$array}); " . basename(__FILE__) . " line " . __LINE__);
}
@shm_put_var($this->shmid, $this->index, $array);
if ($GLOBALS["LOGON-PAGE"]) {
error_log("[{$_SESSION["uid"]}]::@shm_put_var() OK " . basename(__FILE__) . " line " . __LINE__);
}
}
/**
* Write a KEY/VALUE into shm
*/
public function put($varkey, $varval)
{
// Write a value into shm
if ($this->mode == 'sysv') {
return shm_put_var($this->id, $varkey, $varval);
} else {
if ($this->mode == 'shmop') {
// shmop is much more low-level than sysv, you need to operate every byte yourself!
$curr = shmop_read($this->id, 0, shmop_size($this->id));
$curr = substr($curr, 0, strpos($curr, ""));
$curr = $curr ? unserialize($curr) : array();
$curr[$varkey] = $varval;
$curr = serialize($curr) . "";
return shmop_write($this->id, $curr, 0);
} else {
$curr = @file_get_contents($this->id);
$curr = substr($curr, 0, strpos($curr, ""));
$curr = $curr ? unserialize($curr) : array();
$curr[$varkey] = $varval;
$curr = serialize($curr) . "";
return file_put_contents($this->id, $curr, LOCK_EX) or error('Unable to write file:' . $this->id, __FILE__, __LINE__);
}
}
}
/**
* 更新主进程收集的状态信息到共享内存
* @return bool
*/
protected static function updateStatusToShm()
{
if (!self::$shmId) {
return true;
}
return shm_put_var(self::$shmId, self::STATUS_VAR_ID, array_merge(self::$serviceStatusInfo, array('pid_map' => self::$workerPidMap)));
}
$sa = sem_acquire($toSemId);
$toUser = shm_get_var($toShmId, $toKey);
if (!$toUser) {
$f = fopen($ffn, 'r+');
$userStr = fread($f, filesize($ffn));
$toUser = unserialize($userStr);
$fo = true;
}
unset($toUser['friends'][$_SESSION['username']]['req']);
$toUser['friends'][$_SESSION['username']]['nickName'] = $_SESSION['nickName'];
$toUser['friends'][$_SESSION['username']]['key'] = $_SESSION['key'];
unset($toUser['olFrns'][$_SESSION['username']]['req']);
$toUser['olFrns'][$_SESSION['username']]['nickName'] = $_SESSION['nickName'];
$toUser['olFrns'][$_SESSION['username']]['key'] = $_SESSION['key'];
if (!$fo) {
$spv = shm_put_var($toShmId, $toKey, $toUser);
$sd = shm_detach($toShmId);
$sr = sem_release($toSemId);
} else {
$userStr = serialize($toUser);
$fw = fwrite($f, $userStr);
$fc = fclose($f);
}
if ($spv or $fw) {
$fn = '../userFiles/' . $_SESSION['username'] . '/live.shm';
$f = fopen($fn, 'r+');
$userStr = serialize($user);
$fw = fwrite($f, $userStr);
$fc = fclose($f);
echo '<status>success</status><frnStatus>' . $toUser['chtStatus'] . '</frnStatus>';
} else {
/**
* set value of variable in shared mem
*
* @param string $name name of the variable
* @param string $value value of the variable
*
* @return bool true on success, false on fail
* @access public
*/
function set($name, $value)
{
return shm_put_var($this->_h, $this->_s2i($name), $value);
}
protected function set($key, $value)
{
return shm_put_var($this->id, $key, $value);
}
/**
* Writes the transmitted variable to shared memory
* Subclasses may never use an id < 2!
*
* @param mixed $data data which should be saved into shared memory
* @param int $id int indicating the variable (bigger than 2!)
*
* @access protected
* @return boolean
*/
protected function setData($data, $id = 2)
{
if (isset($this->mutexid) && $this->mutexid !== false && (isset($this->memid) && $this->memid !== false)) {
return @shm_put_var($this->memid, $id, $data);
}
return false;
}
