PHP タイムアウト処理の包括的な概要

<IfModulemod_fastcgi.c>FastCgiExternalServer/home/forum/apache/apache_php/cgi-bin/php-cgi-socket/home/forum/php5/etc/php-fpm.sockScriptAlias/fcgi-bin/”/home/forum/apache/apache_php/cgi-bin/”AddHandlerphp-fastcgi.phpActionphp-fastcgi/fcgi-bin/php-cgiAddTypeapplication/x-httpd-php.php</IfModule>

<IfModulemod_fastcgi.c>FastCgiExternalServer/home/forum/apache/apache_php/cgi-bin/php-cgi-socket/home/forum/php5/etc/php-fpm.sock-idle-timeout100ScriptAlias/fcgi-bin/”/home/forum/apache/apache_php/cgi-bin/”AddHandlerphp-fastcgi.phpActionphp-fastcgi/fcgi-bin/php-cgiAddTypeapplication/x-httpd-php.php</IfModule>

[ThuJan2718:30:152011][error][client10.81.41.110]FastCGI:commwithserver”/home/forum/apache/apache_php/cgi-bin/php-cgi”aborted:idletimeout(30sec)[ThuJan2718:30:152011][error][client10.81.41.110]FastCGI:incompleteheaders(0bytes)receivedfromserver”/home/forum/apache/apache_php/cgi-bin/php-cgi”

IdleTimeout发呆时限ProcessLifeTime一个进程的最长生命周期，过期之后无条件killMaxProcessCount最大进程个数DefaultMinClassProcessCount每个程序启动的最小进程个数DefaultMaxClassProcessCount每个程序启动的最大进程个数IPCConnectTimeout程序响应超时时间IPCCommTimeout与程序通讯的最长时间，上面的错误有可能就是这个值设置过小造成的MaxRequestsPerProcess每个进程最多完成处理个数，达成后自杀

server.max-keep-alive-idle=5server.max-read-idle=60server.read-timeout=0server.max-connection-idle=360————————————————–#每次keep-alive的最大请求数,默认值是16server.max-keep-alive-requests=100#keep-alive的最长等待时间,单位是秒，默认值是5server.max-keep-alive-idle=1200#lighttpd的work子进程数，默认值是0，单进程运行server.max-worker=2#限制用户在发送请求的过程中，最大的中间停顿时间(单位是秒)，#如果用户在发送请求的过程中(没发完请求)，中间停顿的时间太长，lighttpd会主动断开连接#默认值是60(秒)server.max-read-idle=1200#限制用户在接收应答的过程中，最大的中间停顿时间(单位是秒)，#如果用户在接收应答的过程中(没接完)，中间停顿的时间太长，lighttpd会主动断开连接#默认值是360(秒)server.max-write-idle=12000#读客户端请求的超时限制，单位是秒,配为0表示不作限制#设置小于max-read-idle时，read-timeout生效server.read-timeout=0#写应答页面给客户端的超时限制，单位是秒，配为0表示不作限制#设置小于max-write-idle时，write-timeout生效server.write-timeout=0#请求的处理时间上限，如果用了mod_proxy_core，那就是和后端的交互时间限制,单位是秒server.max-connection-idle=1200————————————————–

http{#Fastcgi:(针对后端的fastcgi生效,fastcgi不属于proxy模式)fastcgi_connect_timeout5;#连接超时fastcgi_send_timeout10; #写超时fastcgi_read_timeout10;#读取超时#Proxy:(针对proxy/upstreams的生效)proxy_connect_timeout15s;#连接超时proxy_read_timeout24s;#读超时proxy_send_timeout10s; #写超时}

<?xmlversion=”1.0″?><configuration>//…Setsthelimitonthenumberofsimultaneousrequeststhatwillbeserved.EquivalenttoApacheMaxClientsdirective.EquivalenttoPHP_FCGI_CHILDRENenvironmentinoriginalphp.fcgiUsedwithanypm_style.#php-cgi的进程数量<valuename=”max_children”>128</value>Thetimeout(inseconds)forservingasinglerequestafterwhichtheworkerprocesswillbeterminatedShouldbeusedwhen’max_execution_time’inioptiondoesnotstopscriptexecutionforsomereason’0s’means’off’#php-fpm 请求执行超时时间，0s为永不超时，否则设置一个 Ns 为超时的秒数<valuename=”request_terminate_timeout”>0s</value>Thetimeout(inseconds)forservingofsinglerequestafterwhichaphpbacktracewillbedumpedtoslow.logfile’0s’means’off’<valuename=”request_slowlog_timeout”>0s</value></configuration>

<valuename=”request_terminate_timeout”>0s</value>

max_execution_time=30

ini_set(“max_execution_time”,30);set_time_limit(30);

curl_setopt($ch,opt)可以设置一些超时的设置，主要包括：*(重要)CURLOPT_TIMEOUT设置cURL允许执行的最长秒数。*(重要)CURLOPT_TIMEOUT_MS设置cURL允许执行的最长毫秒数。(在cURL7.16.2中被加入。从PHP5.2.3起可使用。)CURLOPT_CONNECTTIMEOUT在发起连接前等待的时间，如果设置为0，则无限等待。CURLOPT_CONNECTTIMEOUT_MS尝试连接等待的时间，以毫秒为单位。如果设置为0，则无限等待。在cURL7.16.2中被加入。从PHP5.2.3开始可用。CURLOPT_DNS_CACHE_TIMEOUT设置在内存中保存DNS信息的时间，默认为120秒。

curl_setopt($ch,CURLOPT_TIMEOUT,60);curl如果需要进行毫秒超时，需要增加：curl_easy_setopt(curl,CURLOPT_NOSIGNAL,1L);

curl_setopt($ch,CURLOPT_NOSIGNAL,true);是可以支持毫秒级别超时设置的

<?phpif(!isset($_GET['foo'])){//Client$ch=curl_init(‘http://example.com/’);curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);curl_setopt($ch,CURLOPT_NOSIGNAL,1);//注意，毫秒超时一定要设置这个curl_setopt($ch,CURLOPT_TIMEOUT_MS,200);//超时毫秒，cURL7.16.2中被加入。从PHP5.2.3起可使用$data=curl_exec($ch);$curl_errno=curl_errno($ch);$curl_error=curl_error($ch);curl_close($ch);if($curl_errno>0){echo”cURLError($curl_errno):$curl_errorn”;}else{echo”Datareceived:$datan”;}}else{//Serversleep(10);echo”Done.”;}?>

$tmCurrent=gettimeofday();$intUSGone=($tmCurrent['sec']-$tmStart['sec'])*1000000+($tmCurrent['usec']-$tmStart['usec']);if($intUSGone>$this->_intReadTimeoutUS){returnfalse;}

<?php//Timeoutinseconds$timeout=5;$fp=fsockopen(“example.com”,80,$errno,$errstr,$timeout);if($fp){fwrite($fp,”GET/HTTP/1.0rn”);fwrite($fp,”Host:example.comrn”);fwrite($fp,”Connection:Closernrn”);stream_set_blocking($fp,true);//重要，设置为非阻塞模式stream_set_timeout($fp,$timeout);//设置超时$info=stream_get_meta_data($fp);while((!feof($fp))&&(!$info['timed_out'])){$data.=fgets($fp,4096);$info=stream_get_meta_data($fp);ob_flush;flush();}if($info['timed_out']){echo”ConnectionTimedOut!”;}else{echo$data;}}

<?php$timeout=array('http=>array('timeout'=>5//设置一个超时时间，单位为秒));$ctx=stream_context_create($timeout);$text=file_get_contents("http://example.com/",0,$ctx);?>

<?php$timeout=array('http'=>array('timeout'=>5//设置一个超时时间，单位为秒));$ctx=stream_context_create($timeout);if($fp=fopen("http://example.com/","r",false,$ctx)){while($c=fread($fp,8192)){echo$c;}fclose($fp);}?>

MYSQL_OPT_READ_TIMEOUT=11;MYSQL_OPT_WRITE_TIMEOUT=12;

<?php//自己定义读写超时常量if(!defined(‘MYSQL_OPT_READ_TIMEOUT’)){define(‘MYSQL_OPT_READ_TIMEOUT’,11);}if(!defined(‘MYSQL_OPT_WRITE_TIMEOUT’)){define(‘MYSQL_OPT_WRITE_TIMEOUT’,12);}//设置超时$mysqli=mysqli_init();$mysqli->options(MYSQL_OPT_READ_TIMEOUT,3);$mysqli->options(MYSQL_OPT_WRITE_TIMEOUT,1);//连接数据库$mysqli->real_connect(“localhost”,”root”,”root”,”test”);if(mysqli_connect_errno()){printf(“Connectfailed:%s/n”,mysqli_connect_error());exit();}//执行查询sleep1秒不超时printf(“Hostinformation:%s/n”,$mysqli->host_info);if(!($res=$mysqli->query(‘selectsleep(1)’))){echo”query1error:”.$mysqli->error.”/n”;}else{echo”Query1:querysuccess/n”;}//执行查询sleep9秒会超时if(!($res=$mysqli->query(‘selectsleep(9)’))){echo”query2error:”.$mysqli->error.”/n”;}else{echo”Query2:querysuccess/n”;}$mysqli->close();echo”closemysqlconnection/n”;?>

//创建连接超时（连接到Memcached）memcached_st*MemCacheProxy::_create_handle(){memcached_st*mmc=NULL;memcached_return_tprc;if(_mpool!=NULL){//getfrompoolmmc=memcached_pool_pop(_mpool,false,&prc);if(mmc==NULL){__LOG_WARNING__(“MemCacheProxy”,”gethandlefrompoolerror[%d]“,(int)prc);}returnmmc;}memcached_st*handle=memcached_create(NULL);if(handle==NULL){__LOG_WARNING__(“MemCacheProxy”,”create_handleerror”);returnNULL;}//设置连接/读取超时memcached_behavior_set(handle,MEMCACHED_BEHAVIOR_HASH,MEMCACHED_HASH_DEFAULT);memcached_behavior_set(handle,MEMCACHED_BEHAVIOR_NO_BLOCK,_noblock);//参数MEMCACHED_BEHAVIOR_NO_BLOCK为1使超时配置生效，不设置超时会不生效，关键时候会悲剧的，容易引起雪崩memcached_behavior_set(handle,MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT,_connect_timeout);//连接超时memcached_behavior_set(handle,MEMCACHED_BEHAVIOR_RCV_TIMEOUT,_read_timeout);//读超时memcached_behavior_set(handle,MEMCACHED_BEHAVIOR_SND_TIMEOUT,_send_timeout);//写超时memcached_behavior_set(handle,MEMCACHED_BEHAVIOR_POLL_TIMEOUT,_poll_timeout);//设置一致hash//memcached_behavior_set_distribution(handle,MEMCACHED_DISTRIBUTION_CONSISTENT);memcached_behavior_set(handle,MEMCACHED_BEHAVIOR_DISTRIBUTION,MEMCACHED_DISTRIBUTION_CONSISTENT);memcached_returnrc;for(uinti=0;i<_server_count;i++){rc=memcached_server_add(handle,_ips[i],_ports[i]);if(MEMCACHED_SUCCESS!=rc){__LOG_WARNING__(“MemCacheProxy”,”addserver[%s:%d]failed.”,_ips[i],_ports[i]);}}_mpool=memcached_pool_create(handle,_min_connect,_max_connect);if(_mpool==NULL){__LOG_WARNING__(“MemCacheProxy”,”create_poolerror”);returnNULL;}mmc=memcached_pool_pop(_mpool,false,&prc);if(mmc==NULL){__LOG_WARNING__(“MyMemCacheProxy”,”gethandlefrompoolerror[%d]“,(int)prc);}//__LOG_DEBUG__(“MemCacheProxy”,”gethandle[%p]“,handle);returnmmc;}//设置一个key超时（set一个数据到memcached）boolMemCacheProxy::_add(memcached_st*handle,unsignedint*key,constchar*value,intlen,unsignedinttimeout){memcached_returnrc;chartmp[1024];snprintf(tmp,sizeof(tmp),”%u#%u”,key[0],key[1]);//有个timeout值rc=memcached_set(handle,tmp,strlen(tmp),(char*)value,len,timeout,0);if(MEMCACHED_SUCCESS!=rc){returnfalse;}returntrue;}//Memcache读取数据超时(没有设置)

LIBMEMCACHED_APIchar*memcached_get(memcached_st*ptr,constchar*key,size_tkey_length,size_t*value_length,uint32_t*flags,memcached_return_t*error);LIBMEMCACHED_APImemcached_return_tmemcached_mget(memcached_st*ptr,constchar*const*keys,constsize_t*key_length,size_tnumber_of_keys);

<?$host=”127.0.0.1″;$port=”80″;$timeout=15;//timeoutinseconds$socket=socket_create(AF_INET,SOCK_STREAM,SOL_TCP)ordie(“Unabletocreatesocketn”);socket_set_nonblock($socket) //务必设置为阻塞模式ordie(“Unabletosetnonblockonsocketn”);$time=time();//循环的时候每次都减去相应值while([email protected]

socket_select(…,floor($timeout),ceil($timeout*1000000));

<?php$server=newServer;$client=newClient;for(;;){foreach($select->can_read(0)as$socket){if($socket==$client->socket){//NewClientSocket$select->add(socket_accept($client->socket));}else{//there’ssomethingtoreadon$socket}}}?>

<?phpclassselect{var$sockets;functionselect($sockets){$this->sockets=array();foreach($socketsas$socket){$this->add($socket);}}functionadd($add_socket){array_push($this->sockets,$add_socket);}functionremove($remove_socket){$sockets=array();foreach($this->socketsas$socket){if($remove_socket!=$socket)$sockets[]=$socket;}$this->sockets=$sockets;}functioncan_read($timeout){$read=$this->sockets;socket_select($read,$write=NULL,$except=NULL,$timeout);return$read;}functioncan_write($timeout){$write=$this->sockets;socket_select($read=NULL,$write,$except=NULL,$timeout);return$write;}}?>

//信号处理函数staticvoidconnect_alarm(intsigno){debug_printf(“SignalHandler”);return;}//alarm超时连接实现staticvoidconn_alarm(){Sigfunc*sigfunc;//现有信号处理函数sigfunc=signal(SIGALRM,connect_alarm);//建立信号处理函数connect_alarm,(如果有)保存现有的信号处理函数inttimeout=5;//设置闹钟if(alarm(timeout)!=0){//…闹钟已经设置处理}//进行连接操作if(connect(m_Socket,(structsockaddr*)&addr,sizeof(addr))<0){if(errno==EINTR){//如果错误号设置为EINTR，说明超时中断了debug_printf(“Timeout”);