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nexedi
tsn-measures
Commits
dadd7e7b
Commit
dadd7e7b
authored
Aug 14, 2020
by
Joanne Hugé
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Remove ptptime program
parent
3ac9a1a7
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211 deletions
+0
-211
ptptime/build/Makefile
ptptime/build/Makefile
+0
-30
ptptime/src/main.c
ptptime/src/main.c
+0
-181
No files found.
ptptime/build/Makefile
deleted
100644 → 0
View file @
3ac9a1a7
PROG
=
ptptime
SRCDIR
=
../src
SRCS
=
main.c
OBJS
=
$(SRCS:%.c=%.o)
ifeq
($(DEBUG),)
CFLAGS
=
-O2
else
CFLAGS
=
-Og
-g
-Wall
-Wextra
endif
CFLAGS
+=
-MD
-MP
CFLAGS
+=
-I
$(SRCDIR)
CFLAGS
+=
-std
=
gnu99
LLIBS
=
-pthread
vpath
%.c
$(SRCDIR)
$(PROG)
:
$(OBJS)
$(CC)
$(LDFLAGS)
$(LDIRS)
$^
$(LLIBS)
-o
$@
-include
$(subst .c,.d,$(SRCS))
clean
:
$(RM)
$(OBJS)
$(PROG)
$(
subst
.c,.d,
$(SRCS)
)
.PHONY
:
clean
ptptime/src/main.c
deleted
100644 → 0
View file @
3ac9a1a7
/*
* Get PTP time
*
* Large portions taken from cyclictest
*
*/
#define _GNU_SOURCE
#include <errno.h>
#include <error.h>
#include <inttypes.h>
#include <limits.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <time.h>
#include <unistd.h>
#define NSEC_PER_SEC UINT64_C(1000000000)
// Structs
typedef
struct
thread_param
{
int
interval
;
int
priority
;
}
thread_param_t
;
// Static functions
static
void
process_options
(
int
argc
,
char
*
argv
[]);
static
void
add_ns
(
struct
timespec
*
t
,
uint64_t
ns
);
static
uint64_t
ts_to_uint
(
struct
timespec
t
);
// Static variables
static
thread_param_t
thread_params
;
static
uint64_t
ptptime
;
static
void
help
(
char
*
argv
[])
{
printf
(
"Usage: %s [-h] [-i USEC]
\n
"
" -h Show help
\n
"
" -i USEC Wake up the real time thread every "
"USEC "
"microseconds (Default: 10ms)
\n
"
"
\n
"
,
argv
[
0
]);
}
/*
* Real-time thread: Sends packets at a regular intervall
*/
static
void
*
packet_sending_thread
(
void
*
p
)
{
(
void
)
p
;
struct
timespec
next
,
ptptime_ts
;
cpu_set_t
mask
;
// Set thread CPU affinity
CPU_ZERO
(
&
mask
);
CPU_SET
(
1
,
&
mask
);
if
(
sched_setaffinity
(
0
,
sizeof
(
mask
),
&
mask
))
error
(
EXIT_FAILURE
,
errno
,
"Could not set CPU affinity to CPU #1
\n
"
);
clock_gettime
(
CLOCK_MONOTONIC
,
&
next
);
// Packet sending loop
for
(;;)
{
clock_gettime
(
CLOCK_REALTIME
,
&
ptptime_ts
);
ptptime
=
ts_to_uint
(
ptptime_ts
);
add_ns
(
&
next
,
thread_params
.
interval
);
clock_nanosleep
(
CLOCK_MONOTONIC
,
TIMER_ABSTIME
,
&
next
,
NULL
);
}
return
NULL
;
}
/*
* Main thread, has non-real time priority
* Handles the IO and creates the real time thread
*/
int
main
(
int
argc
,
char
*
argv
[])
{
pthread_t
thread
;
struct
sched_param
param
;
pthread_attr_t
attr
;
// Default configuration values
thread_params
.
interval
=
100000
*
1000
;
thread_params
.
priority
=
99
;
/* Lock all current and future pages from preventing of being paged to
* swap */
if
(
mlockall
(
MCL_CURRENT
|
MCL_FUTURE
))
{
perror
(
"mlockall failed"
);
/* exit(-1) or do error handling */
}
// Process bash options
process_options
(
argc
,
argv
);
/* Initialize pthread attributes (default values) */
if
(
pthread_attr_init
(
&
attr
))
{
fprintf
(
stderr
,
"init pthread attributes failed
\n
"
);
exit
(
EXIT_FAILURE
);
}
/* Set a specific stack size */
if
(
pthread_attr_setstacksize
(
&
attr
,
PTHREAD_STACK_MIN
))
{
fprintf
(
stderr
,
"pthread setstacksize failed
\n
"
);
exit
(
EXIT_FAILURE
);
}
/* Set scheduler policy and priority of pthread */
if
(
pthread_attr_setschedpolicy
(
&
attr
,
SCHED_FIFO
))
{
fprintf
(
stderr
,
"pthread setschedpolicy failed
\n
"
);
exit
(
EXIT_FAILURE
);
}
param
.
sched_priority
=
thread_params
.
priority
;
if
(
pthread_attr_setschedparam
(
&
attr
,
&
param
))
{
fprintf
(
stderr
,
"pthread setschedparam failed
\n
"
);
exit
(
EXIT_FAILURE
);
}
/* Use scheduling parameters of attr */
if
(
pthread_attr_setinheritsched
(
&
attr
,
PTHREAD_EXPLICIT_SCHED
))
{
fprintf
(
stderr
,
"pthread setinheritsched failed
\n
"
);
exit
(
EXIT_FAILURE
);
}
// Create the real time thread
if
(
pthread_create
(
&
thread
,
&
attr
,
packet_sending_thread
,
NULL
))
error
(
EXIT_FAILURE
,
errno
,
"Couldn't create packet sending thread"
);
// Verbose loop
for
(;;)
{
usleep
(
1000
);
printf
(
"%9"
PRIu64
":
\n
"
,
ptptime
);
printf
(
"
\033
[%dA"
,
1
);
}
exit
(
EXIT_SUCCESS
);
}
// Process bash options
static
void
process_options
(
int
argc
,
char
*
argv
[])
{
int
network_if_specified
=
0
;
for
(;;)
{
int
c
=
getopt
(
argc
,
argv
,
"hi:"
);
if
(
c
==
-
1
)
break
;
switch
(
c
)
{
case
'h'
:
help
(
argv
);
exit
(
EXIT_SUCCESS
);
break
;
case
'i'
:
thread_params
.
interval
=
atoi
(
optarg
)
*
1000
;
break
;
}
}
}
static
void
add_ns
(
struct
timespec
*
t
,
uint64_t
ns
)
{
t
->
tv_nsec
+=
ns
;
while
((
unsigned
int
)
t
->
tv_nsec
>=
NSEC_PER_SEC
)
{
t
->
tv_sec
+=
1
;
t
->
tv_nsec
-=
NSEC_PER_SEC
;
}
}
static
uint64_t
ts_to_uint
(
struct
timespec
t
)
{
return
t
.
tv_sec
*
NSEC_PER_SEC
+
t
.
tv_nsec
;
}
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