hphp/runtime/vm/jit/tc-relocate.h

   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 #ifndef incl_HPHP_TC_RELOCATE_H_
  17 #define incl_HPHP_TC_RELOCATE_H_
  18
  19 #include <set>
  20 #include <cstdio>
  21 #include <vector>
  22
  23 #include "hphp/runtime/vm/jit/code-cache.h"
  24 #include "hphp/runtime/vm/jit/srcdb.h"
  25 #include "hphp/runtime/vm/srckey.h"
  26
  27 namespace HPHP {
  28
  29 struct CodeCache;
  30
  31 namespace jit {
  32
  33 struct AsmInfo;
  34 struct IRUnit;
  35
  36 //////////////////////////////////////////////////////////////////////
  37
  38 namespace tc {
  39
  40 std::string perfRelocMapInfo(
  41   TCA start, TCA end,
  42   TCA coldStart, TCA coldEnd,
  43   SrcKey sk, int argNum,
  44   const GrowableVector<IncomingBranch> &incomingBranches,
  45   CGMeta& fixups);
  46
  47 bool relocateNewTranslation(TransLoc& loc, CodeCache::View cache,
  48                             CGMeta& fixups,
  49                             TCA* adjust = nullptr);
  50
  51 /*
  52  * Relocate a new translation into a free region in the TC and update the
  53  * TransLoc.
  54  *
  55  * Attempt to relocate the main, cold, and frozen portions of the translation
  56  * loc into memory freed memory in the TC their respective code blocks. In
  57  * addition, reusable stubs associated with this translation will be relocated
  58  * to be outside of loc so that they can be managed separately.
  59  */
  60 void tryRelocateNewTranslation(SrcKey sk, TransLoc& loc,
  61                                CodeCache::View code, CGMeta& fixups);
  62
  63 //////////////////////////////////////////////////////////////////////
  64
  65 }}}
  66
  67 #endif