/*
* Mausezahn - A fast versatile traffic generator
* Copyright (C) 2008-2010 Herbert Haas
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2 as published by the
* Free Software Foundation.
*
* This program 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, see http://www.gnu.org/licenses/gpl-2.0.html
*
*/
#include "mz.h"
// Check if current system supports the nanosecond timer functions.
// Additionally, measure the precision.
// This function should be called upon program start.
//
int check_timer()
{
struct timespec res;
int r;
// Check if the glibc is recent enough:
#ifdef _POSIX_C_SOURCE
if (_POSIX_C_SOURCE >= 199309L) {
r = clock_getres(CLOCK_MONOTONIC, &res);
if (r!=0) perror(" mz/check_timer:");
if (verbose) {
fprintf(stderr, " This system supports a high resolution clock.\n");
fprintf(stderr, " The clock resolution is %li nanoseconds.\n",
res.tv_nsec);
}
}
else {
fprintf(stderr,
" WARNING: Your system does NOT support the newer high resolution clock\n"
" Please inform the author: herbert@perihel.at\n");
exit(1);
}
#endif
return 0;
}
// This is the replacement for gettimeofday() which would result in 'jumps' if
// the system clock is adjusted (e. g. via a NTP process) and finally the jitter
// measurement would include wrong datapoints.
//
// Furthermore the function below utilizes the newer hi-res nanosecond timers.
inline void getcurtime (struct mz_timestamp *t)
{
struct timespec ct;
clock_gettime(CLOCK_MONOTONIC, &ct);
t->sec = ct.tv_sec;
t->nsec = ct.tv_nsec;
}
//////////////////////////////////////////////////////////////////////////////////////
// Purpose: Calculate time deltas of two timestamps stored in struct timeval.
//
// Subtract the "struct timeval" values X and Y, storing the result in RESULT,
// i. e. X-Y=RESULT.
//
// RETURN VALUES:
//
// Sign: 1 = negative, 0 = positive
// Error: -1 due to a wrong timestamp (i. e. nsec > 999999999L)
//
inline int timestamp_subtract (struct mz_timestamp *x, struct mz_timestamp *y, struct mz_timestamp *result)
{
int32_t ndiff;
int sign=0, carry=0;
// Check for wrong timestamps
if ((x->nsec>999999999L) || (y->nsec>999999999L)) return -1;
if (y->sec > x->sec) sign=1;
else if ((y->sec == x->sec) && (y->nsec > x->nsec)) sign=1;
ndiff = x->nsec - y->nsec;
if ((ndiff>0) && (sign)) carry=1;
if ((ndiff<0) && (sign)) ndiff = y->nsec - x->nsec;
if ((ndiff<0) && (!sign)) {
ndiff = 1000000000L + ndiff;
carry=1;
}
if (sign)
result->sec = y->sec - x->sec - carry;
else
result->sec = x->sec - y->sec - carry;
result->nsec = ndiff;
return sign;
}
// Add two variables of type struct mz_timestamp: x+y=result.
//
inline void timestamp_add (struct mz_timestamp *x, struct mz_timestamp *y, struct mz_timestamp *result)
{
int carry=0;
u_int32_t c;
c = x->nsec + y->nsec;
if (c>999999999L) {
carry=1;
result->nsec =c-1000000000;
} else result->nsec =c;
result->sec = x->sec + y->sec + carry;
}
// Returns a human readable timestamp in the string result.
// Optionally a prefix can be specified, for example if the
// timestamp is part of a filename.
//
// Example:
// char myTimeStamp[128];
//
// timestamp_human(myTimeStamp, NULL);
//
// => "20080718_155521"
//
// /* or with prefix */
//
// timestamp_human(myTimeStamp, "MZ_RTP_jitter_");
//
// => "MZ_RTP_jitter_20080718_155521"
//
int timestamp_human(char* result, const char* prefix)
{
time_t curtime;
struct tm curtime_broken;
char curtime_str[32];
time(&curtime);
localtime_r (&curtime, &curtime_broken);
sprintf(curtime_str, "%4i%02i%02i-%02i%02i%02i",
curtime_broken.tm_year+1900,
curtime_broken.tm_mon+1,
curtime_broken.tm_mday,
curtime_broken.tm_hour,
curtime_broken.tm_min,
curtime_broken.tm_sec);
if (prefix==NULL)
{
strncpy(result, curtime_str, 32);
}
else
{
strncpy(result, prefix, 32);
strncat(result, curtime_str, 32);
}
return 0;
}
// Creates a human readable timestamp in the string result.
// Optionally a prefix can be specified, for example if the
// timestamp is part of a filename.
//
// Example:
// char myTimeStamp[9];
//
// timestamp_hms (myTimeStamp);
//
// => "15:55:21"
int timestamp_hms(char* result)
{
time_t curtime;
struct tm curtime_broken;
char curtime_str[32];
time(&curtime);
localtime_r (&curtime, &curtime_broken);
sprintf(curtime_str, "%02i:%02i:%02i",
curtime_broken.tm_hour,
curtime_broken.tm_min,
curtime_broken.tm_sec);
strncpy(result, curtime_str, 9);
return 0;
}
f9dbd'>patch)
| tree | d514a2d8512fc52c15747841e2368f8f99a50787 /sound/pci/lola |
|---|
| parent | 3365135d43f861003555c963b309672d053a2228 (diff) |
|---|
| parent | 950eabbd6ddedc1b08350b9169a6a51b130ebaaf (diff) |
|---|
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) GTP fixes from Andreas Schultz (missing genl module alias, clear IP
DF on transmit).
2) Netfilter needs to reflect the fwmark when sending resets, from Pau
Espin Pedrol.
3) nftable dump OOPS fix from Liping Zhang.
4) Fix erroneous setting of VIRTIO_NET_HDR_F_DATA_VALID on transmit,
from Rolf Neugebauer.
5) Fix build error of ipt_CLUSTERIP when procfs is disabled, from Arnd
Bergmann.
6) Fix regression in handling of NETIF_F_SG in harmonize_features(),
from Eric Dumazet.
7) Fix RTNL deadlock wrt. lwtunnel module loading, from David Ahern.
8) tcp_fastopen_create_child() needs to setup tp->max_window, from
Alexey Kodanev.
9) Missing kmemdup() failure check in ipv6 segment routing code, from
Eric Dumazet.
10) Don't execute unix_bind() under the bindlock, otherwise we deadlock
with splice. From WANG Cong.
11) ip6_tnl_parse_tlv_enc_lim() potentially reallocates the skb buffer,
therefore callers must reload cached header pointers into that skb.
Fix from Eric Dumazet.
12) Fix various bugs in legacy IRQ fallback handling in alx driver, from
Tobias Regnery.
13) Do not allow lwtunnel drivers to be unloaded while they are
referenced by active instances, from Robert Shearman.
14) Fix truncated PHY LED trigger names, from Geert Uytterhoeven.
15) Fix a few regressions from virtio_net XDP support, from John
Fastabend and Jakub Kicinski.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (102 commits)
ISDN: eicon: silence misleading array-bounds warning
net: phy: micrel: add support for KSZ8795
gtp: fix cross netns recv on gtp socket
gtp: clear DF bit on GTP packet tx
gtp: add genl family modules alias
tcp: don't annotate mark on control socket from tcp_v6_send_response()
ravb: unmap descriptors when freeing rings
virtio_net: reject XDP programs using header adjustment
virtio_net: use dev_kfree_skb for small buffer XDP receive
r8152: check rx after napi is enabled
r8152: re-schedule napi for tx
r8152: avoid start_xmit to schedule napi when napi is disabled
r8152: avoid start_xmit to call napi_schedule during autosuspend
net: dsa: Bring back device detaching in dsa_slave_suspend()
net: phy: leds: Fix truncated LED trigger names
net: phy: leds: Break dependency of phy.h on phy_led_triggers.h
net: phy: leds: Clear phy_num_led_triggers on failure to avoid crash
net-next: ethernet: mediatek: change the compatible string
Documentation: devicetree: change the mediatek ethernet compatible string
bnxt_en: Fix RTNL lock usage on bnxt_get_port_module_status().
...