hphp/runtime/vm/repo-global-data.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-2013 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 #ifndef incl_HPHP_REPO_GLOBAL_DATA_H_
  17 #define incl_HPHP_REPO_GLOBAL_DATA_H_
  18
  19 #include "hphp/runtime/vm/repo.h"
  20 #include "hphp/runtime/base/repo-auth-type-array.h"
  21
  22 namespace HPHP {
  23
  24 //////////////////////////////////////////////////////////////////////
  25
  26 /*
  27  * Global repo metadata.
  28  *
  29  * Only used in RepoAuthoritative mode.  See loadGlobalData().
  30  */
  31 struct Repo::GlobalData {
  32   /*
  33    * Indicates whether a repo was compiled using HHBBC.
  34    */
  35   bool UsedHHBBC = false;
  36
  37   /*
  38    * Indicates whether a repo was compiled with HardTypeHints.
  39    *
  40    * If so, we disallow recovering from the E_RECOVERABLE_ERROR we
  41    * raise if you violate a parameter typehint, because doing so
  42    * would allow violating assumptions from the optimizer.
  43    */
  44   bool HardTypeHints = false;
  45
  46   /*
  47    * Indicates whether a repo was compiled with HardPrivatePropInference.
  48    */
  49   bool HardPrivatePropInference = false;
  50
  51   /*
  52    * A table of array type information for various array types found
  53    * in the repo.  This is only used in authoritative repos.
  54    */
  55   ArrayTypeTable arrayTypeTable;
  56
  57   /*
  58    * Indicates whether the repo was compiled with DisallowDynamicVarEnvFuncs. If
  59    * so, we assume that '$f()' doesn't read or write over locals (that
  60    * haven't been passed).
  61    */
  62   bool DisallowDynamicVarEnvFuncs = false;
  63
  64   /*
  65    * Indicates whether a repo was compiled with HardReturnTypeHints.
  66    *
  67    * If so, we disallow recovering from the E_RECOVERABLE_ERROR we
  68    * raise if you violate a return typehint, because doing so would
  69    * allow violating assumptions from the optimizer.
  70    */
  71   bool HardReturnTypeHints = false;
  72
  73   /*
  74    * Indicates whether the repo was compiled with PHP7 integer semantics. This
  75    * slightly changes the way certain arithmetic operations are evaluated, in
  76    * small enough ways that don't warrant new bytecodes, but in ways that do
  77    * affect everything from hphpc's constant folding up through the JIT, and
  78    * so need to be kept consistent.
  79    */
  80   bool PHP7_IntSemantics = false;
  81
  82   /*
  83    * Indicates that generators should be autoprimed and not require an initial
  84    * call to next() before calling other generator functions.
  85    */
  86   bool AutoprimeGenerators = true;
  87
  88   template<class SerDe> void serde(SerDe& sd) {
  89     sd(UsedHHBBC)
  90       (HardTypeHints)
  91       (HardPrivatePropInference)
  92       (arrayTypeTable)
  93       (DisallowDynamicVarEnvFuncs)
  94       (HardReturnTypeHints)
  95       (PHP7_IntSemantics)
  96       (AutoprimeGenerators)
  97       ;
  98   }
  99 };
 100
 101 //////////////////////////////////////////////////////////////////////
 102
 103 }
 104
 105
 106 #endif