anonymous()

Size

Total Lines	32
Code Lines	15

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
            function () use ($codeCoverage, $currentReport) {
                $codeCoverage->stop();
                if (!file_exists(dirname($currentReport))) { // verify directory exists
                    if (!mkdir(dirname($currentReport), 0777, true)) {
                        __c3_error("Can't write CodeCoverage report into $currentReport");
                    }
                }

                // This will either lock the existing report for writing and return it along with a file pointer,
                // or return a fresh PHP_CodeCoverage object without a file pointer. We'll merge the current request
                // into that coverage object, write it to disk, and release the lock. By doing this in the end of
                // the request, we avoid this scenario, where Request 2 overwrites the changes from Request 1:
                //
                //             Time ->
                // Request 1 [ <read>               <write>          ]
                // Request 2 [         <read>                <write> ]
                //
                // In addition, by locking the file for exclusive writing, we make sure no other request try to
                // read/write to the file at the same time as this request (leading to a corrupt file). flock() is a
                // blocking call, so it waits until an exclusive lock can be acquired before continuing.

                list($existingCodeCoverage, $file) = __c3_factory($currentReport, true);
                $existingCodeCoverage->merge($codeCoverage);

                if ($file === null) {
                    file_put_contents($currentReport, serialize($existingCodeCoverage), LOCK_EX);
                } else {
                    fseek($file, 0);
                    fwrite($file, serialize($existingCodeCoverage));
                    fflush($file);
                    flock($file, LOCK_UN);
                    fclose($file);
                }