kma
5e603184f5
Of the four horsemen of the SmartAllocator, ArrayData was the only virtual call. This meant an extra layer of indirection when coming from the TC to allow the c++ compiler to emit its virtual call, and slightly larger callsites when using non-generic paths. While we're moving in this direction, consolidate ArrayData introspection on its type enum. isSharedMap() was previously implemented with a vtable slot, and we had no way of asking if an ArrayData was a NameValueTable.
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.