hphp/runtime/base/req-root.cpp

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #include "hphp/runtime/base/req-root.h"
  18 #include "hphp/runtime/base/typed-value.h"
  19 #include "hphp/runtime/base/type-string.h"
  20 #include "hphp/runtime/base/type-array.h"
  21 #include "hphp/runtime/base/type-object.h"
  22 #include "hphp/runtime/base/type-variant.h"
  23 #include "hphp/runtime/base/ini-setting.h"
  24 #include "hphp/util/safe-cast.h"
  25
  26 namespace HPHP {
  27 namespace req {
  28
  29 uint32_t req::root_handle::addRootHandle() {
  30   auto& handles = tl_heap->m_root_handles;
  31   auto id = safe_cast<uint32_t>(handles.size());
  32   handles.push_back(this);
  33   return id;
  34 }
  35
  36 uint32_t req::root_handle::stealRootHandle(root_handle* s) {
  37   assertx(s->m_id != INVALID);
  38   auto& handles = tl_heap->m_root_handles;
  39   auto id = s->m_id;
  40   handles[id] = this;
  41   s->m_id = INVALID;
  42   return id;
  43 }
  44
  45 void req::root_handle::delRootHandle() {
  46   auto& handles = tl_heap->m_root_handles;
  47   auto last = handles.back();
  48   handles[last->m_id = m_id] = last;
  49   m_id = INVALID;
  50   handles.pop_back();
  51 }
  52
  53 template<class T> void root<T>::scan(type_scan::Scanner& scanner) const {
  54   scanner.scan(*static_cast<const T*>(this));
  55 }
  56
  57 template<class T> void root<T>::detach() {
  58   T::detach();
  59 }
  60
  61 template<> void req::root<TypedValue>::scan(type_scan::Scanner& scanner) const {
  62   scanner.scan(*static_cast<const TypedValue*>(this));
  63 }
  64
  65 template<> void req::root<TypedValue>::detach() {
  66   m_type = KindOfNull;
  67 }
  68
  69 template struct root<String>;
  70 template struct root<Array>;
  71 template struct root<Object>;
  72 template struct root<Variant>;
  73 template struct root<IniSettingMap>;
  74
  75 }}