Jordan DeLong
6b8e5611d6
We already look up the PC for every frame as we're taking the backtrace, so we can just skip them when going through a backtrace frame. Also, there is currently a guarantee that if an exception propagates through a frame where pc was pointing at RetC, all the locals and the $this pointer have already been decref'd, so we don't need to use a null check to determine this.
HipHop VM for PHP
HipHop VM (HHVM) is a new open-source virtual machine designed for executing programs written in PHP. HHVM uses a just-in-time compilation approach to achieve superior performance while maintaining the flexibility that PHP developers are accustomed to. HipHop VM (and before it HPHPc) has realized >5x increase in throughput for Facebook compared with Zend PHP 5.2.
Required Packages, and Installing and Running HipHop VM
The latest information is available on the wiki.
Contributing to HipHop VM
HipHop VM is licensed under the PHP and Zend licenses except as otherwise noted.
Before changes can be accepted a Contributors Licensing Agreement must be signed and returned.