private function mem_usage_bsd($TYPE = 'TOTAL', $READ = 'USED')
{
$vmstats = explode("\n", shell_exec('vm_stat 2>&1'));
// buffers_and_cache
foreach ($vmstats as $vmstat_line) {
$line_parts = pts_strings::colon_explode($vmstat_line);
if (self::$page_size == -1) {
strtok($vmstat_line, ':');
$tok = strtok(' ');
while (self::$page_size == -1) {
if (is_numeric($tok)) {
self::$page_size = $tok;
} else {
$tok = strtok(' ');
}
}
continue;
}
//$line_parts[1] = pts_strings::trim_spaces($line_parts[1]);
$line_type = strtok($vmstat_line, ':');
$line_value = strtok(' .');
if ($TYPE == 'MEMORY') {
if ($line_type == 'Pages active' && $READ == 'USED') {
$mem_usage = $line_value / (1048576 / self::$page_size);
break;
}
if ($line_type == 'Pages free' && $READ == 'FREE') {
$mem_usage = $line_value / (1048576 / self::$page_size);
break;
}
}
}
return pts_math::set_precision($mem_usage);
}
public static function mem_usage($TYPE = 'TOTAL', $READ = 'USED')
{
// Reads system memory usage
$mem_usage = -1;
if (pts_client::executable_in_path('free') != false) {
$mem = explode("\n", shell_exec('free -t -m 2>&1'));
$grab_line = null;
$buffers_and_cache = 0;
for ($i = 0; $i < count($mem); $i++) {
$line_parts = pts_strings::colon_explode($mem[$i]);
if (count($line_parts) == 2) {
$line_type = $line_parts[0];
if ($TYPE == 'MEMORY' && $line_type == 'Mem') {
$grab_line = $line_parts[1];
} else {
if ($TYPE == 'SWAP' && $line_type == 'Swap') {
$grab_line = $line_parts[1];
} else {
if ($TYPE == 'TOTAL' && $line_type == 'Total') {
$grab_line = $line_parts[1];
} else {
if ($line_type == '-/+ buffers/cache' && $TYPE != 'SWAP') {
$buffers_and_cache = pts_arrays::first_element(explode(' ', pts_strings::trim_spaces($line_parts[1])));
}
}
}
}
}
}
if (!empty($grab_line)) {
$grab_line = pts_strings::trim_spaces($grab_line);
$mem_parts = explode(' ', $grab_line);
if ($READ == 'USED') {
if (count($mem_parts) >= 2 && is_numeric($mem_parts[1])) {
$mem_usage = $mem_parts[1] - $buffers_and_cache;
}
} else {
if ($READ == 'TOTAL') {
if (count($mem_parts) >= 1 && is_numeric($mem_parts[0])) {
$mem_usage = $mem_parts[0];
}
} else {
if ($READ == 'FREE') {
if (count($mem_parts) >= 3 && is_numeric($mem_parts[2])) {
$mem_usage = $mem_parts[2];
}
}
}
}
}
} else {
if (pts_client::executable_in_path('vm_stat') != false) {
$vmstats = explode("\n", shell_exec('vm_stat 2>&1'));
$grab_line = null;
// buffers_and_cache
foreach ($vmstats as $vmstat_line) {
$line_parts = pts_strings::colon_explode($vmstat_line);
if (self::$page_size == -1) {
strtok($vmstat_line, ':');
$tok = strtok(' ');
while (self::$page_size == -1) {
if (is_numeric($tok)) {
self::$page_size = $tok;
} else {
$tok = strtok(' ');
}
}
continue;
}
//$line_parts[1] = pts_strings::trim_spaces($line_parts[1]);
$line_type = strtok($vmstat_line, ':');
$line_value = strtok(' .');
if ($TYPE == 'MEMORY') {
if ($line_type == 'Pages active' && $READ == 'USED') {
$mem_usage = $line_value / (1048576 / self::$page_size);
break;
}
if ($line_type == 'Pages free' && $READ == 'FREE') {
$mem_usage = $line_value / (1048576 / self::$page_size);
break;
}
}
}
$mem_usage = pts_math::set_precision($mem_usage);
}
}
return $mem_usage;
}
public static function read_sensor()
{
return memory_usage::mem_usage('SWAP', 'USED');
}
