-/* $Id$ */
-
/***
This file is part of PulseAudio.
-
+
+ Copyright 2004-2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
-
+
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
-
+
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
#include <config.h>
#endif
-#include <assert.h>
#include <stddef.h>
#include <sys/time.h>
#include <windows.h>
#endif
-#include "../pulsecore/winsock.h"
+#include <pulsecore/macro.h>
+#include <pulsecore/core-util.h>
#include "timeval.h"
struct timeval *pa_gettimeofday(struct timeval *tv) {
-#ifdef HAVE_GETTIMEOFDAY
- assert(tv);
-
- return gettimeofday(tv, NULL) < 0 ? NULL : tv;
-#elif defined(OS_IS_WIN32)
+ pa_assert(tv);
+
+#if defined(OS_IS_WIN32)
/*
* Copied from implementation by Steven Edwards (LGPL).
* Found on wine mailing list.
*/
-
#if defined(_MSC_VER) || defined(__BORLANDC__)
#define EPOCHFILETIME (116444736000000000i64)
#else
#define EPOCHFILETIME (116444736000000000LL)
#endif
-
- FILETIME ft;
- LARGE_INTEGER li;
- __int64 t;
-
- assert(tv);
+{
+ FILETIME ft;
+ LARGE_INTEGER li;
+ int64_t t;
GetSystemTimeAsFileTime(&ft);
li.LowPart = ft.dwLowDateTime;
t = li.QuadPart; /* In 100-nanosecond intervals */
t -= EPOCHFILETIME; /* Offset to the Epoch time */
t /= 10; /* In microseconds */
- tv->tv_sec = (long)(t / 1000000);
- tv->tv_usec = (long)(t % 1000000);
-
- return tv;
+ tv->tv_sec = (time_t) (t / PA_USEC_PER_SEC);
+ tv->tv_usec = (suseconds_t) (t % PA_USEC_PER_SEC);
+}
+#elif defined(HAVE_GETTIMEOFDAY)
+ pa_assert_se(gettimeofday(tv, NULL) == 0);
#else
#error "Platform lacks gettimeofday() or equivalent function."
#endif
+
+ return tv;
}
pa_usec_t pa_timeval_diff(const struct timeval *a, const struct timeval *b) {
pa_usec_t r;
- assert(a && b);
- /* Check which whan is the earlier time and swap the two arguments if reuqired. */
- if (pa_timeval_cmp(a, b) < 0) {
+ pa_assert(a);
+ pa_assert(b);
+
+ /* Check which is the earlier time and swap the two arguments if required. */
+ if (PA_UNLIKELY(pa_timeval_cmp(a, b) < 0)) {
const struct timeval *c;
c = a;
a = b;
}
/* Calculate the second difference*/
- r = ((pa_usec_t) a->tv_sec - b->tv_sec)* 1000000;
+ r = ((pa_usec_t) a->tv_sec - (pa_usec_t) b->tv_sec) * PA_USEC_PER_SEC;
/* Calculate the microsecond difference */
if (a->tv_usec > b->tv_usec)
- r += ((pa_usec_t) a->tv_usec - b->tv_usec);
+ r += (pa_usec_t) a->tv_usec - (pa_usec_t) b->tv_usec;
else if (a->tv_usec < b->tv_usec)
- r -= ((pa_usec_t) b->tv_usec - a->tv_usec);
+ r -= (pa_usec_t) b->tv_usec - (pa_usec_t) a->tv_usec;
return r;
}
int pa_timeval_cmp(const struct timeval *a, const struct timeval *b) {
- assert(a && b);
+ pa_assert(a);
+ pa_assert(b);
if (a->tv_sec < b->tv_sec)
return -1;
pa_usec_t pa_timeval_age(const struct timeval *tv) {
struct timeval now;
- assert(tv);
-
+ pa_assert(tv);
+
return pa_timeval_diff(pa_gettimeofday(&now), tv);
}
struct timeval* pa_timeval_add(struct timeval *tv, pa_usec_t v) {
- unsigned long secs;
- assert(tv);
-
- secs = (v/1000000);
- tv->tv_sec += (unsigned long) secs;
- v -= secs*1000000;
+ time_t secs;
+ pa_assert(tv);
+
+ secs = (time_t) (v/PA_USEC_PER_SEC);
+
+ if (PA_UNLIKELY(tv->tv_sec > PA_INT_TYPE_MAX(time_t) - secs))
+ goto overflow;
- tv->tv_usec += v;
+ tv->tv_sec += secs;
+ v -= (pa_usec_t) secs * PA_USEC_PER_SEC;
+ tv->tv_usec += (suseconds_t) v;
/* Normalize */
- while (tv->tv_usec >= 1000000) {
+ while ((pa_usec_t) tv->tv_usec >= PA_USEC_PER_SEC) {
+
+ if (PA_UNLIKELY(tv->tv_sec >= PA_INT_TYPE_MAX(time_t)))
+ goto overflow;
+
tv->tv_sec++;
- tv->tv_usec -= 1000000;
+ tv->tv_usec -= (suseconds_t) PA_USEC_PER_SEC;
}
return tv;
+
+overflow:
+ tv->tv_sec = PA_INT_TYPE_MAX(time_t);
+ tv->tv_usec = (suseconds_t) (PA_USEC_PER_SEC-1);
+ return tv;
+}
+
+struct timeval* pa_timeval_sub(struct timeval *tv, pa_usec_t v) {
+ time_t secs;
+ pa_assert(tv);
+
+ secs = (time_t) (v/PA_USEC_PER_SEC);
+
+ if (PA_UNLIKELY(tv->tv_sec < secs))
+ goto underflow;
+
+ tv->tv_sec -= secs;
+ v -= (pa_usec_t) secs * PA_USEC_PER_SEC;
+
+ if (tv->tv_usec >= (suseconds_t) v)
+ tv->tv_usec -= (suseconds_t) v;
+ else {
+
+ if (PA_UNLIKELY(tv->tv_sec <= 0))
+ goto underflow;
+
+ tv->tv_sec --;
+ tv->tv_usec += (suseconds_t) (PA_USEC_PER_SEC - v);
+ }
+
+ return tv;
+
+underflow:
+ tv->tv_sec = 0;
+ tv->tv_usec = 0;
+ return tv;
+}
+
+struct timeval* pa_timeval_store(struct timeval *tv, pa_usec_t v) {
+ pa_assert(tv);
+
+ if (PA_UNLIKELY(v == PA_USEC_INVALID)) {
+ tv->tv_sec = PA_INT_TYPE_MAX(time_t);
+ tv->tv_usec = (suseconds_t) (PA_USEC_PER_SEC-1);
+
+ return tv;
+ }
+
+ tv->tv_sec = (time_t) (v / PA_USEC_PER_SEC);
+ tv->tv_usec = (suseconds_t) (v % PA_USEC_PER_SEC);
+
+ return tv;
+}
+
+pa_usec_t pa_timeval_load(const struct timeval *tv) {
+
+ if (PA_UNLIKELY(!tv))
+ return PA_USEC_INVALID;
+
+ return
+ (pa_usec_t) tv->tv_sec * PA_USEC_PER_SEC +
+ (pa_usec_t) tv->tv_usec;
}