hphp/runtime/vm/jit/bc-marker.cpp

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-2014 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/vm/jit/bc-marker.h"
  18
  19 #include <folly/Format.h>
  20 #include <folly/Conv.h>
  21
  22 #include "hphp/runtime/base/runtime-option.h"
  23 #include "hphp/runtime/vm/jit/ssa-tmp.h"
  24
  25 namespace HPHP { namespace jit {
  26
  27 //////////////////////////////////////////////////////////////////////
  28
  29 std::string BCMarker::show() const {
  30   assertx(valid());
  31   return folly::format(
  32     "--- bc {}{}, fp {}, spOff {} ({}){}",
  33     m_sk.offset(),
  34     m_sk.resumed() ? "r" : "",
  35     m_fp ? folly::to<std::string>(m_fp->id()) : "_",
  36     m_spOff.offset,
  37     m_sk.func()->fullName()->data(),
  38     m_profTransID != kInvalidTransID
  39       ? folly::format(" [profTrans={}]", m_profTransID).str()
  40       : std::string{}
  41   ).str();
  42 }
  43
  44 bool BCMarker::valid() const {
  45   if (isDummy()) return true;
  46   return
  47     m_sk.valid() &&
  48     m_sk.offset() >= m_sk.func()->base() &&
  49     m_sk.offset() < m_sk.func()->past() &&
  50     // When inlining is on, we may modify markers to weird values in
  51     // case reentry happens.
  52     (RuntimeOption::EvalHHIREnableGenTimeInlining ||
  53      m_spOff.offset <= m_sk.func()->numSlotsInFrame() +
  54         m_sk.func()->maxStackCells());
  55 }
  56
  57 //////////////////////////////////////////////////////////////////////
  58
  59 }}