/**
* @param Symbol[] $symbols
*
* @return array
*/
protected function computeFlatInfo($symbols)
{
$metrics = $this->getMetrics();
// Compute inclusive times for each function.
$symbol_tab = $this->computeInclusiveTimes($symbols);
// Total metric value is the metric value for "main()".
foreach ($metrics as $metric) {
$this->overall_totals[$metric] = $this->mainSymbol->getMetric($metric);
}
// Initialize exclusive (self) metric value to inclusive metric value to start with.
// In the same pass, also add up the total number of function calls.
foreach ($symbol_tab as $symbol => $info) {
foreach ($metrics as $metric) {
$symbol_tab[$symbol]["excl_" . $metric] = $symbol_tab[$symbol][$metric];
}
// Keep track of total number of calls.
$this->overall_totals["ct"] += $info["ct"];
}
// Adjust exclusive times by deducting inclusive time of children.
foreach ($symbols as $symbol) {
$parent = $symbol->getParent();
if ($parent) {
foreach ($metrics as $metric) {
// make sure the parent exists hasn't been pruned.
if (isset($symbol_tab[$parent])) {
$symbol_tab[$parent]["excl_" . $metric] -= $symbol->getMetric($metric);
}
}
}
}
return $symbol_tab;
}
/**
* @param $data
*
* @return array
*/
private function parseSymbols($data)
{
$symbols = array();
foreach ($data as $parent_child => $metrics) {
if (!isset($metrics['cpu'])) {
$metrics['cpu'] = NULL;
}
if (!isset($metrics['mu'])) {
$metrics['mu'] = NULL;
}
if (!isset($metrics['pmu'])) {
$metrics['pmu'] = NULL;
}
$symbol = new Symbol($parent_child, $metrics['ct'], $metrics['wt'], $metrics['cpu'], $metrics['mu'], $metrics['pmu']);
$symbols[$parent_child] = $symbol;
if ($symbol->getParent() == NULL) {
$this->mainSymbol = $symbol;
}
}
return $symbols;
}
