/**
* Generate image according to DOT script. This function will spawn a process
* with "dot" command and pipe the "dot_script" to it and pipe out the
* generated image content.
*
* @param dot_script, string, the script for DOT to generate the image.
* @param type, one of the supported image types, see
* $xhprof_legal_image_types.
* @returns, binary content of the generated image on success. empty string on
* failure.
*
* @author cjiang
*/
function xhprof_generate_image_by_dot($dot_script, $type)
{
$errorFile = ERROR_FILE;
$tmpDirectory = TMP_DIRECTORY;
$dotBinary = DOT_BINARY;
// detect windows
if (stristr(PHP_OS, 'WIN') && !stristr(PHP_OS, 'Darwin')) {
return xhprof_generate_image_by_dot_on_win($dot_script, $type, $errorFile, $tmpDirectory, $dotBinary);
}
// parts of the original source
$descriptorspec = array(0 => array("pipe", "r"), 1 => array("pipe", "w"), 2 => array("file", $errorFile, "a"));
$cmd = ' "' . $dotBinary . '" -T' . $type;
$process = proc_open($cmd, $descriptorspec, $pipes, $tmpDirectory, array());
if (is_resource($process)) {
fwrite($pipes[0], $dot_script);
fclose($pipes[0]);
$output = stream_get_contents($pipes[1]);
fclose($pipes[1]);
proc_close($process);
if ($output == "" && filesize($errorFile) > 0) {
die("Error producing callgraph, check {$errorFile}");
}
return $output;
}
print "failed to shell execute cmd=\"{$cmd}\"\n";
exit;
}
/**
* Generate image according to DOT script. This function will spawn a process
* with "dot" command and pipe the "dot_script" to it and pipe out the
* generated image content.
*
* @param dot_script, string, the script for DOT to generate the image.
* @param type, one of the supported image types, see
* $xhprof_legal_image_types.
* @returns, binary content of the generated image on success. empty string on
* failure.
*
* @author cjiang
*/
function xhprof_generate_image_by_dot($dot_script, $type)
{
// get config => yep really dirty - but unobstrusive
global $_xhprof;
$errorFile = $_xhprof['dot_errfile'];
$tmpDirectory = $_xhprof['dot_tempdir'];
$dotBinary = $_xhprof['dot_binary'];
// detect windows
if (stristr(PHP_OS, 'WIN') && !stristr(PHP_OS, 'Darwin')) {
return xhprof_generate_image_by_dot_on_win($dot_script, $type, $errorFile, $tmpDirectory, $dotBinary);
}
// parts of the original source
$descriptorspec = array(0 => array("pipe", "r"), 1 => array("pipe", "w"), 2 => array("file", $errorFile, "a"));
$cmd = ' "' . $dotBinary . '" -T' . $type;
$process = proc_open($cmd, $descriptorspec, $pipes, $tmpDirectory, array());
if (is_resource($process)) {
fwrite($pipes[0], $dot_script);
fclose($pipes[0]);
$output = stream_get_contents($pipes[1]);
fclose($pipes[1]);
proc_close($process);
if ($output == "" && filesize($errorFile) > 0) {
die("Error producing callgraph, check {$errorFile}");
}
return $output;
}
print "failed to shell execute cmd=\"{$cmd}\"\n";
exit;
}
