PHP getrusage函数代码示例

 public function getCpuUsage()
 {
     $proc = getrusage();
     $proc["ru_utime.tv_usec"] = $proc["ru_utime.tv_sec"] * 1000000.0 + $proc["ru_utime.tv_usec"] - $this->rusage;
     $time = (microtime(true) - $this->tusage) * 1000000;
     return $time > 0 ? sprintf("%01.2f", $proc["ru_utime.tv_usec"] / $time * 100) : '0.00';
 }

 function getCpuTime($ru = null)
 {
     if ($ru == null) {
         $ru = getrusage();
     }
     return $ru['ru_utime.tv_sec'] + $ru['ru_stime.tv_sec'] + ($ru['ru_utime.tv_usec'] + $ru['ru_stime.tv_usec']) * 1.0E-6;
 }

function thold_display_rusage()
{
    global $thold_start_rusage;
    if (function_exists('getrusage')) {
        $dat = getrusage();
        html_start_box('', '100%', '', '3', 'left', '');
        print '<tr>';
        if (!isset($thold_start_rusage)) {
            print "<td colspan='10'>ERROR: Can not display RUSAGE please call thold_initialize_rusage first</td>";
        } else {
            $i_u_time = $thold_start_rusage['ru_utime.tv_sec'] + $thold_start_rusage['ru_utime.tv_usec'] * 1.0E-6;
            $i_s_time = $thold_start_rusage['ru_stime.tv_sec'] + $thold_start_rusage['ru_stime.tv_usec'] * 1.0E-6;
            $s_s = $thold_start_rusage['ru_nswap'];
            $s_pf = $thold_start_rusage['ru_majflt'];
            list($micro, $seconds) = explode(' ', $thold_start_rusage['microtime']);
            $start_time = $seconds + $micro;
            list($micro, $seconds) = explode(' ', microtime());
            $end_time = $seconds + $micro;
            $utime = $dat['ru_utime.tv_sec'] + $dat['ru_utime.tv_usec'] * 1.0E-6 - $i_u_time;
            $stime = $dat['ru_stime.tv_sec'] + $dat['ru_stime.tv_usec'] * 1.0E-6 - $i_s_time;
            $swaps = $dat['ru_nswap'] - $s_s;
            $pages = $dat['ru_majflt'] - $s_pf;
            print "<td colspan='10' width='1%' style='text-align:left;'>";
            print '<b>' . __('Time:') . '</b>&nbsp;' . round($end_time - $start_time, 2) . ' seconds, ';
            print '<b>' . __('User:') . '</b>&nbsp;' . round($utime, 2) . ' seconds, ';
            print '<b>' . __('System:') . '</b>&nbsp;' . round($stime, 2) . ' seconds, ';
            print '<b>' . __('Swaps:') . '</b>&nbsp;' . $swaps . ' swaps, ';
            print '<b>' . __('Pages:') . '</b>&nbsp;' . $pages . ' pages';
            print '</td>';
        }
        print '</tr>';
        html_end_box(false);
    }
}

function thold_display_rusage()
{
    global $colors, $thold_start_rusage;
    if (function_exists("getrusage")) {
        $dat = getrusage();
        html_start_box("", "100%", $colors["header"], "3", "left", "");
        print "<tr>";
        if (!isset($thold_start_rusage)) {
            print "<td colspan='10'>ERROR: Can not display RUSAGE please call thold_initialize_rusage first</td>";
        } else {
            $i_u_time = $thold_start_rusage["ru_utime.tv_sec"] + $thold_start_rusage["ru_utime.tv_usec"] * 1.0E-6;
            $i_s_time = $thold_start_rusage["ru_stime.tv_sec"] + $thold_start_rusage["ru_stime.tv_usec"] * 1.0E-6;
            $s_s = $thold_start_rusage["ru_nswap"];
            $s_pf = $thold_start_rusage["ru_majflt"];
            list($micro, $seconds) = split(" ", $thold_start_rusage["microtime"]);
            $start_time = $seconds + $micro;
            list($micro, $seconds) = split(" ", microtime());
            $end_time = $seconds + $micro;
            $utime = $dat["ru_utime.tv_sec"] + $dat["ru_utime.tv_usec"] * 1.0E-6 - $i_u_time;
            $stime = $dat["ru_stime.tv_sec"] + $dat["ru_stime.tv_usec"] * 1.0E-6 - $i_s_time;
            $swaps = $dat["ru_nswap"] - $s_s;
            $pages = $dat["ru_majflt"] - $s_pf;
            print "<td colspan='10' width='1%' style='text-align:left;'>";
            print "<b>Time:</b>&nbsp;" . round($end_time - $start_time, 2) . " seconds, ";
            print "<b>User:</b>&nbsp;" . round($utime, 2) . " seconds, ";
            print "<b>System:</b>&nbsp;" . round($stime, 2) . " seconds, ";
            print "<b>Swaps:</b>&nbsp;" . $swaps . " swaps, ";
            print "<b>Pages:</b>&nbsp;" . $pages . " pages";
            print "</td>";
        }
        print "</tr>";
        html_end_box(false);
    }
}

 public static function cpuTime()
 {
     $dat = getrusage();
     $tv_usec = $dat["ru_utime.tv_sec"] * 1000000.0 + $dat["ru_utime.tv_usec"] - self::$RUSAGE;
     $time = (microtime(true) - self::$TUSAGE) * 1000000.0;
     $cpuusage = $tv_usec / $time;
     return round($time / 1000 * $cpuusage);
 }

 /**
  * @param $name
  * @param $type
  */
 public function log($name, $type)
 {
     if (!array_key_exists($type, $this->_typeList)) {
         throw new \InvalidArgumentException("Type {$type} is incorrect");
     }
     $cpu = getrusage();
     $this->_message[] = ['type' => $type, 'message' => $name, 'time' => microtime(true), 'memory' => memory_get_usage(true), 'cpu' => $cpu['ru_utime.tv_usec'] + $cpu['ru_stime.tv_usec']];
 }

 private function getTimeUsage()
 {
     if (!function_exists('getrusage')) {
         return null;
     }
     $ru = getrusage();
     return array('user_time' => $ru['ru_utime.tv_sec'] + $ru['ru_utime.tv_usec'] / 1000000, 'system_time' => $ru['ru_stime.tv_sec'] + $ru['ru_stime.tv_usec'] / 1000000);
 }

 public function sendHeaders($serverErrorString = null)
 {
     // check we can send these first
     if (headers_sent()) {
         throw new ImThumbException("Could not set image headers, output already started", ImThumb::ERR_OUTPUTTING);
     }
     $modifiedDate = gmdate('D, d M Y H:i:s') . ' GMT';
     // get image size. Have to workaround bugs in Imagick that return 0 for size by counting ourselves.
     $byteSize = $this->image->getImageSize();
     if ($this->image->hasBrowserCache()) {
         header('HTTP/1.0 304 Not Modified');
     } else {
         if ($serverErrorString) {
             header('HTTP/1.0 500 Internal Server Error');
             header('X-ImThumb-Error: ' . $serverErrorString);
         } else {
             if (!$this->image->isValid()) {
                 header('HTTP/1.0 404 Not Found');
             } else {
                 header('HTTP/1.0 200 OK');
             }
         }
         header('Content-Type: ' . $this->image->getMime());
         header('Accept-Ranges: none');
         header('Last-Modified: ' . $modifiedDate);
         header('Content-Length: ' . $byteSize);
         if (!$this->image->param('browserCache')) {
             header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
             header("Pragma: no-cache");
             header('Expires: ' . gmdate('D, d M Y H:i:s', time()));
         } else {
             $maxAge = $this->image->param('browserCacheMaxAge');
             $expiryDate = gmdate('D, d M Y H:i:s', strtotime('now +' . $maxAge . ' seconds')) . ' GMT';
             header('Cache-Control: max-age=' . $maxAge . ', must-revalidate');
             header('Expires: ' . $expiryDate);
         }
     }
     // informational headers
     if (!$this->image->param('silent')) {
         $im = new Imagick();
         $imVer = $im->getVersion();
         header('X-Generator: ImThumb v' . ImThumb::VERSION . '; ' . $imVer['versionString']);
         if ($this->image->cache && $this->image->cache->isCached()) {
             header('X-Img-Cache: HIT');
         } else {
             header('X-Img-Cache: MISS');
         }
         if ($this->image->param('debug')) {
             list($startTime, $startCPU_u, $startCPU_s) = $this->image->getTimingStats();
             header('X-Generated-In: ' . number_format(microtime(true) - $startTime, 6) . 's');
             header('X-Memory-Peak: ' . number_format(memory_get_peak_usage() / 1024, 3, '.', '') . 'KB');
             $data = getrusage();
             $memusage = array((double) ($data['ru_utime.tv_sec'] + $data['ru_utime.tv_usec'] / 1000000), (double) ($data['ru_stime.tv_sec'] + $data['ru_stime.tv_usec'] / 1000000));
             header('X-CPU-Utilisation:' . ' Usr ' . number_format($memusage[0] - $startCPU_u, 6) . ', Sys ' . number_format($memusage[1] - $startCPU_s, 6) . '; Base ' . number_format($startCPU_u, 6) . ', ' . number_format($startCPU_s, 6));
         }
     }
 }

 public function stop_time()
 {
     $e_tmr = count($this->etime);
     $this->etime[$e_tmr] = getrusage();
     $ctime = $this->calc_time($this->etime[$e_tmr], $this->stime[$e_tmr], "utime");
     $sctime = $this->calc_time($this->etime[$e_tmr], $this->stime[$e_tmr], "stime");
     $this->results[$e_tmr]['compute'] = $ctime . " ms";
     $this->results[$e_tmr]['calls'] = $sctime . " ms";
 }

 public function printResult()
 {
     $ru = getrusage();
     $time = microtime(true) - $_SERVER["REQUEST_TIME_FLOAT"];
     echo '<b>Memory :</b> ' . memory_get_peak_usage() . '<br />';
     echo '<b>Process Time :</b> ' . $time * 1000 . ' ms<br />';
     echo 'This process used ' . self::_getrtime($ru, $this->start, "utime") . ' ms for its computations<br />';
     echo 'It spent ' . self::_getrtime($ru, $this->start, "stime") . ' ms in system calls';
 }

function randomBytes($length = 16, $secure = true, $raw = true, $startEntropy = "", &$rounds = 0, &$drop = 0)
{
    static $lastRandom = "";
    $output = "";
    $length = abs((int) $length);
    $secureValue = "";
    $rounds = 0;
    $drop = 0;
    while (!isset($output[$length - 1])) {
        //some entropy, but works ^^
        $weakEntropy = array(is_array($startEntropy) ? implode($startEntropy) : $startEntropy, serialize(stat(__FILE__)), __DIR__, PHP_OS, microtime(), (string) lcg_value(), (string) PHP_MAXPATHLEN, PHP_SAPI, (string) PHP_INT_MAX . "." . PHP_INT_SIZE, serialize($_SERVER), serialize(get_defined_constants()), get_current_user(), serialize(ini_get_all()), (string) memory_get_usage() . "." . memory_get_peak_usage(), php_uname(), phpversion(), extension_loaded("gmp") ? gmp_strval(gmp_random(4)) : microtime(), zend_version(), (string) getmypid(), (string) getmyuid(), (string) mt_rand(), (string) getmyinode(), (string) getmygid(), (string) rand(), function_exists("zend_thread_id") ? (string) zend_thread_id() : microtime(), var_export(@get_browser(), true), function_exists("getrusage") ? @implode(getrusage()) : microtime(), function_exists("sys_getloadavg") ? @implode(sys_getloadavg()) : microtime(), serialize(get_loaded_extensions()), sys_get_temp_dir(), (string) disk_free_space("."), (string) disk_total_space("."), uniqid(microtime(), true), file_exists("/proc/cpuinfo") ? file_get_contents("/proc/cpuinfo") : microtime());
        shuffle($weakEntropy);
        $value = hash("sha512", implode($weakEntropy), true);
        $lastRandom .= $value;
        foreach ($weakEntropy as $k => $c) {
            //mixing entropy values with XOR and hash randomness extractor
            $value ^= hash("sha256", $c . microtime() . $k, true) . hash("sha256", mt_rand() . microtime() . $k . $c, true);
            $value ^= hash("sha512", (string) lcg_value() . $c . microtime() . $k, true);
        }
        unset($weakEntropy);
        if ($secure === true) {
            $strongEntropyValues = array(is_array($startEntropy) ? hash("sha512", $startEntropy[($rounds + $drop) % count($startEntropy)], true) : hash("sha512", $startEntropy, true), file_exists("/dev/urandom") ? fread(fopen("/dev/urandom", "rb"), 64) : str_repeat("", 64), (function_exists("openssl_random_pseudo_bytes") and version_compare(PHP_VERSION, "5.3.4", ">=")) ? openssl_random_pseudo_bytes(64) : str_repeat("", 64), function_exists("mcrypt_create_iv") ? mcrypt_create_iv(64, MCRYPT_DEV_URANDOM) : str_repeat("", 64), $value);
            $strongEntropy = array_pop($strongEntropyValues);
            foreach ($strongEntropyValues as $value) {
                $strongEntropy = $strongEntropy ^ $value;
            }
            $value = "";
            //Von Neumann randomness extractor, increases entropy
            $bitcnt = 0;
            for ($j = 0; $j < 64; ++$j) {
                $a = ord($strongEntropy[$j]);
                for ($i = 0; $i < 8; $i += 2) {
                    $b = ($a & 1 << $i) > 0 ? 1 : 0;
                    if ($b != (($a & 1 << $i + 1) > 0 ? 1 : 0)) {
                        $secureValue |= $b << $bitcnt;
                        if ($bitcnt == 7) {
                            $value .= chr($secureValue);
                            $secureValue = 0;
                            $bitcnt = 0;
                        } else {
                            ++$bitcnt;
                        }
                        ++$drop;
                    } else {
                        $drop += 2;
                    }
                }
            }
        }
        $output .= substr($value, 0, min($length - strlen($output), $length));
        unset($value);
        ++$rounds;
    }
    $lastRandom = hash("sha512", $lastRandom, true);
    return $raw === false ? bin2hex($output) : $output;
}

/**
 * Get system resource usage of current request context.
 * Invokes the getrusage(2) system call, requesting RUSAGE_SELF if on PHP5
 * or RUSAGE_THREAD if on HHVM. Returns false if getrusage is not available.
 *
 * @since 1.24
 * @return array|bool Resource usage data or false if no data available.
 */
function wfGetRusage()
{
    if (!function_exists('getrusage')) {
        return false;
    } elseif (defined('HHVM_VERSION')) {
        return getrusage(2);
    } else {
        return getrusage(0);
    }
}

 public static function getNow()
 {
     $time = microtime(true);
     $usage = getrusage();
     $child_usage = getrusage(1);
     $sys_time = sprintf("%d.%f", $usage["ru_stime.tv_sec"], $usage["ru_stime.tv_usec"]);
     $user_time = sprintf("%d.%f", $usage["ru_utime.tv_sec"], $usage["ru_utime.tv_usec"]);
     $child_sys_time = sprintf("%d.%f", $child_usage["ru_stime.tv_sec"], $child_usage["ru_stime.tv_usec"]);
     $child_user_time = sprintf("%d.%f", $child_usage["ru_utime.tv_sec"], $child_usage["ru_utime.tv_usec"]);
     return new Time($time, $sys_time, $user_time, $child_sys_time, $child_user_time);
 }

 protected function getUsage()
 {
     /*
      * getrusage is not available on windows with php < 7
      */
     if (!function_exists('getrusage')) {
         return 0;
     }
     $cpu = getrusage();
     return $cpu["ru_utime.tv_sec"] * 1000000.0 + $cpu["ru_utime.tv_usec"];
 }

 public function _save()
 {
     $root = self::_calculate_item(array_pop(self::$_stack));
     $result = array('url' => $_SERVER['REQUEST_URI'], 'microtime' => $this->_microtime, 'data' => $root, 'log' => self::$_log, 'included_files' => get_included_files(), 'declared_classes' => get_declared_classes(), 'memory' => array('usage' => memory_get_usage(), 'peak' => memory_get_peak_usage()), 'rusage' => getrusage(), 'queries' => Database::$log, 'post' => $_POST, 'get' => $_GET);
     $json = json_encode($result, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
     $microtime = explode(' ', $this->_microtime);
     $seconds = $microtime[1];
     $millis = $microtime[0];
     $filename = $seconds . '[' . $millis . '].json';
     file_put_contents($this->_cwd . '/profiling/' . $filename, $json);
 }