/usr/include/hphp/hhbbc/misc.h is in hhvm-dev 3.11.1+dfsg-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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+----------------------------------------------------------------------+
| HipHop for PHP |
+----------------------------------------------------------------------+
| Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
*/
#ifndef incl_HHBBC_MISC_H_
#define incl_HHBBC_MISC_H_
#include <chrono>
#include <cassert>
#include <boost/variant.hpp>
#include <memory>
#include "hphp/util/trace.h"
#include "hphp/util/match.h"
namespace HPHP {
struct StringData;
struct ArrayData;
}
namespace HPHP { namespace HHBBC {
//////////////////////////////////////////////////////////////////////
/*
* Self-documenting type alias for pointers that aren't owned.
*
* This type is intended to imply that someone else has an owning
* pointer on this value which is guaranteed to live longer than this
* pointer.
*/
template<class T> using borrowed_ptr = T*;
template<class T>
borrowed_ptr<T> borrow(const std::unique_ptr<T>& p) {
return p.get();
}
/*
* String that must be a static string, and and Array that must be a
* static array.
*/
using SString = const StringData*;
using SArray = const ArrayData*;
/*
* HHBC evaluation stack flavors.
*/
enum class Flavor { C, V, A, R, F, U, CR, CVU };
/*
* Types of parameter preparation (or unknown).
*/
enum class PrepKind { Ref, Val, Unknown };
//////////////////////////////////////////////////////////////////////
/*
* Many places in the code want to bump tracing levels by some amount
* for systemlib-related processing. This is the amount they all bump
* by.
*/
constexpr int kSystemLibBump = 10;
/*
* Functions listed in the --trace functions list get trace level bumped by
* this amount.
*/
constexpr int kTraceFuncBump = -2;
/*
* We may run the interpreter collecting stats and when trace is on
* the amount of noise is unbearable. This is to keep tracing out
* of stats collection.
*/
constexpr int kStatsBump = 50;
//////////////////////////////////////////////////////////////////////
struct trace_time {
using clock = std::chrono::high_resolution_clock;
using time_point = clock::time_point;
explicit trace_time(const char* what,
const std::string& extra = std::string{})
: what(what)
, start(clock::now())
{
if (Trace::moduleEnabledRelease(Trace::hhbbc_time, 1)) {
Trace::traceRelease(
"%s",
folly::format("{}: start{}\n",
what,
!extra.empty() ? folly::format(" ({})", extra).str() : extra
).str().c_str()
);
}
}
~trace_time() {
namespace C = std::chrono;
DEBUG_ONLY auto const elapsed = C::duration_cast<C::milliseconds>(
clock::now() - start
);
if (Trace::moduleEnabledRelease(Trace::hhbbc_time, 1)) {
Trace::traceRelease(
"%s",
folly::format("{}: {}ms elapsed\n", what, elapsed.count())
.str().c_str()
);
}
}
trace_time(const trace_time&) = delete;
trace_time& operator=(const trace_time&) = delete;
private:
const char* what;
time_point start;
};
//////////////////////////////////////////////////////////////////////
}}
#endif
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