Sara Golemon
3222f6fc15
The removal of base.h includes left some missing headers scattered around, mostly in util. Reviewed By: @jdelong Differential Revision: D1117195
71 linhas
2.2 KiB
C++
71 linhas
2.2 KiB
C++
/*
|
|
+----------------------------------------------------------------------+
|
|
| HipHop for PHP |
|
|
+----------------------------------------------------------------------+
|
|
| Copyright (c) 2010-2013 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. |
|
|
+----------------------------------------------------------------------+
|
|
*/
|
|
|
|
#include "hphp/util/vdso.h"
|
|
|
|
#define _GNU_SOURCE 1
|
|
#include <dlfcn.h>
|
|
|
|
#include <cstring>
|
|
|
|
namespace HPHP { namespace Util {
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
static Vdso s_vdso;
|
|
|
|
Vdso::Vdso() : m_handle(nullptr), m_clock_gettime_ns(nullptr) {
|
|
m_handle = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
|
|
if (!m_handle) {
|
|
return;
|
|
}
|
|
|
|
m_clock_gettime_ns =
|
|
(int64_t (*)(clockid_t))dlsym(m_handle, "__vdso_clock_gettime_ns");
|
|
m_clock_gettime =
|
|
(int (*)(clockid_t, timespec *))dlsym(m_handle, "__vdso_clock_gettime");
|
|
}
|
|
|
|
Vdso::~Vdso() {
|
|
if (m_handle) {
|
|
dlclose(m_handle);
|
|
}
|
|
}
|
|
|
|
int64_t Vdso::ClockGetTimeNS(int clk_id) {
|
|
return s_vdso.clockGetTimeNS(clk_id);
|
|
}
|
|
|
|
int Vdso::ClockGetTime(int clk_id, timespec *ts) {
|
|
return s_vdso.clockGetTime(clk_id, ts);
|
|
}
|
|
|
|
ALWAYS_INLINE int64_t Vdso::clockGetTimeNS(int clk_id) {
|
|
if (m_clock_gettime_ns)
|
|
return m_clock_gettime_ns(clk_id);
|
|
return -1;
|
|
}
|
|
|
|
ALWAYS_INLINE int Vdso::clockGetTime(int clk_id, timespec *ts) {
|
|
if (m_clock_gettime) {
|
|
memset(ts, 0, sizeof(*ts));
|
|
return m_clock_gettime(clk_id, ts);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
}}
|