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|
/*
+-----------------------------------------------------------------------------------+
| ZMQ extension for PHP |
| Copyright (c) 2010-2013, Mikko Koppanen <mkoppanen@php.net> |
| All rights reserved. |
+-----------------------------------------------------------------------------------+
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| * Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| * Neither the name of the copyright holder nor the |
| names of its contributors may be used to endorse or promote products |
| derived from this software without specific prior written permission. |
+-----------------------------------------------------------------------------------+
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL MIKKO KOPPANEN BE LIABLE FOR ANY |
| DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+-----------------------------------------------------------------------------------+
*/
#include "php_zmq.h"
#include "php_zmq_private.h"
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_TIME_H
# include <time.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_MACH_MACH_TIME_H
# include <mach/mach_time.h>
#endif
#if defined(PHP_WIN32)
# include "win32/time.h"
#endif
static
uint64_t s_backup_clock ()
{
#if defined(HAVE_GETTIMEOFDAY)
struct timeval tv;
gettimeofday(&tv, NULL);
return (uint64_t) (((uint64_t) tv.tv_sec * 1000) + ((uint64_t) tv.tv_usec / 1000));
#endif
php_error (E_ERROR, "Failed to get current time");
return 0;
}
/*
Systems supporting clock_gettime(CLOCK_MONOTONIC)
*/
#if defined(HAVE_CLOCK_GETTIME) && (defined(CLOCK_MONOTONIC_RAW) || defined(CLOCK_MONOTONIC))
struct _php_zmq_clock_ctx_t {};
php_zmq_clock_ctx_t *php_zmq_clock_init ()
{
return
malloc (sizeof (php_zmq_clock_ctx_t));
}
uint64_t php_zmq_clock (php_zmq_clock_ctx_t *clock_ctx)
{
struct timespec ts;
#if defined(CLOCK_MONOTONIC_RAW)
if (clock_gettime (CLOCK_MONOTONIC_RAW, &ts) == 0) {
#else
if (clock_gettime (CLOCK_MONOTONIC, &ts) == 0) {
#endif
return (uint64_t) (((uint64_t) ts.tv_sec * 1000) + ((uint64_t) ts.tv_nsec / 1000000));
}
return
s_backup_clock ();
}
/*
Mac OS X
*/
#elif defined(HAVE_MACH_ABSOLUTE_TIME)
struct _php_zmq_clock_ctx_t {
uint64_t scaling_factor;
};
php_zmq_clock_ctx_t *php_zmq_clock_init ()
{
php_zmq_clock_ctx_t *ctx;
mach_timebase_info_data_t info;
if (mach_timebase_info (&info) != 0) {
return NULL;
}
ctx = malloc (sizeof (php_zmq_clock_ctx_t));
ctx->scaling_factor = (info.numer / info.denom);
return ctx;
}
uint64_t php_zmq_clock (php_zmq_clock_ctx_t *ctx)
{
return
(mach_absolute_time () * ctx->scaling_factor) / 1000000;
}
/*
Windows systems. Not using QueryPerformanceCounter because of:
https://www.virtualbox.org/ticket/11951
*/
#elif defined(PHP_WIN32)
struct _php_zmq_clock_ctx_t {
int wrap_count;
uint64_t last_ticks;
};
php_zmq_clock_ctx_t *php_zmq_clock_init ()
{
return calloc (1, sizeof (php_zmq_clock_ctx_t));
}
static
uint64_t s_get_tick_count (php_zmq_clock_ctx_t *clock_ctx)
{
uint64_t ticks = (uint64_t) GetTickCount ();
/* Has the clock wrapped? */
if (ticks < clock_ctx->last_ticks)
++clock_ctx->wrap_count;
clock_ctx->last_ticks = ticks;
ticks += (uint64_t) clock_ctx->wrap_count * (uint64_t) MAXDWORD;
return ticks;
}
uint64_t php_zmq_clock (php_zmq_clock_ctx_t *clock_ctx)
{
return s_get_tick_count (clock_ctx);
}
#elif defined(HAVE_GETTIMEOFDAY)
struct _php_zmq_clock_ctx_t {};
php_zmq_clock_ctx_t *php_zmq_clock_init ()
{
return malloc (sizeof (php_zmq_clock_ctx_t));
}
static
uint64_t s_get_tick_count (php_zmq_clock_ctx_t *clock_ctx)
{
uint64_t ticks = (uint64_t) GetTickCount ();
/* Has the clock wrapped? */
if (ticks < clock_ctx->last_ticks)
++clock_ctx->wrap_count;
clock_ctx->last_ticks = ticks;
ticks += (uint64_t) clock_ctx->wrap_count * MAX_DWORD;
return ticks;
}
uint64_t php_zmq_clock (php_zmq_clock_ctx_t *clock_ctx)
{
return s_backup_clock ();
}
#else
# error "Cannot find a clock that would work on this platform. Please report a bug"
#endif
void php_zmq_clock_destroy (php_zmq_clock_ctx_t **clock_ctx)
{
free (*clock_ctx);
}
|
