hphp/runtime/base/record-data.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/record-data.h"
  18
  19 #include "hphp/runtime/base/req-vector.h"
  20 #include "hphp/runtime/base/tv-comparisons.h"
  21 #include "hphp/runtime/base/tv-mutate.h"
  22 #include "hphp/runtime/vm/record.h"
  23
  24 namespace HPHP {
  25
  26 RecordData::RecordData(const RecordDesc* record)
  27   : RecordBase(record) {
  28   initHeader(HeaderKind::Record, OneReference);
  29   static_assert(sizeof(RecordData) == sizeof(RecordBase) + sizeof(Countable),
  30                 "RecordData must not have any fields of its own");
  31 }
  32
  33 RecordData* RecordData::newRecord(const RecordDesc* rec,
  34                                   uint32_t initSize,
  35                                   const StringData* const* keys,
  36                                   const TypedValue* values) {
  37   return newRecordImpl<RecordData>(rec, initSize, keys, values);
  38 }
  39
  40 RecordData* RecordData::copyRecord() const {
  41   auto const rd = copyRecordBase(this, AllocMode::Request);
  42   rd->initHeader(this->kind(), OneReference);
  43   return rd;
  44 }
  45
  46 NEVER_INLINE
  47 void RecordData::release() noexcept {
  48   assertx(kindIsValid());
  49   auto const numRecFields = m_record->numFields();
  50   auto const recFields = fieldVec();
  51   for (auto idx = 0; idx < numRecFields; ++idx) {
  52     tvDecRefGen(recFields[idx]);
  53   }
  54   tl_heap->objFree(this, heapSize());
  55   AARCH64_WALKABLE_FRAME();
  56 }
  57
  58 template<bool(*fieldEq)(TypedValue, TypedValue)>
  59 ALWAYS_INLINE
  60 bool RecordData::equalImpl(const RecordData* r1, const RecordData* r2) {
  61   if (r1->m_record != r2->m_record) {
  62     return false;
  63   }
  64   auto const fv1 = r1->fieldVec();
  65   auto const fv2 = r2->fieldVec();
  66   auto const numFields = r1->m_record->numFields();
  67   for (size_t i = 0; i < numFields; ++i) {
  68     if (!fieldEq(fv1[i], fv2[i])) {
  69       return false;
  70     }
  71   }
  72   return true;
  73 }
  74
  75
  76 bool RecordData::equal(const RecordData* r1, const RecordData* r2) {
  77   return equalImpl<tvEqual>(r1, r2);
  78 }
  79 bool RecordData::same(const RecordData* r1, const RecordData* r2) {
  80   return equalImpl<tvSame>(r1, r2);
  81 }
  82 }