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/*
This file is part of rt-app - https://launchpad.net/rt-app
Copyright (C) 2010 Giacomo Bagnoli <g.bagnoli@asidev.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "rt-app_utils.h"
unsigned int
timespec_to_msec(struct timespec *ts)
{
return (ts->tv_sec * 1E9 + ts->tv_nsec) / 1000000;
}
long
timespec_to_lusec(struct timespec *ts)
{
return round((ts->tv_sec * 1E9 + ts->tv_nsec) / 1000.0);
}
unsigned long
timespec_to_usec(struct timespec *ts)
{
return round((ts->tv_sec * 1E9 + ts->tv_nsec) / 1000.0);
}
#ifdef DLSCHED
__u64
timespec_to_nsec(struct timespec *ts)
{
return round(ts->tv_sec * 1E9 + ts->tv_nsec);
}
#endif
struct timespec
usec_to_timespec(unsigned long usec)
{
struct timespec ts;
ts.tv_sec = usec / 1000000;
ts.tv_nsec = (usec % 1000000) * 1000;
return ts;
}
struct timespec
msec_to_timespec(unsigned int msec)
{
struct timespec ts;
ts.tv_sec = msec / 1000;
ts.tv_nsec = (msec % 1000) * 1000000;
return ts;
}
struct timespec
timespec_add(struct timespec *t1, struct timespec *t2)
{
struct timespec ts;
ts.tv_sec = t1->tv_sec + t2->tv_sec;
ts.tv_nsec = t1->tv_nsec + t2->tv_nsec;
while (ts.tv_nsec >= 1E9) {
ts.tv_nsec -= 1E9;
ts.tv_sec++;
}
return ts;
}
struct timespec
timespec_sub(struct timespec *t1, struct timespec *t2)
{
struct timespec ts;
if (t1->tv_nsec < t2->tv_nsec) {
ts.tv_sec = t1->tv_sec - t2->tv_sec -1;
ts.tv_nsec = t1->tv_nsec + 1000000000 - t2->tv_nsec;
} else {
ts.tv_sec = t1->tv_sec - t2->tv_sec;
ts.tv_nsec = t1->tv_nsec - t2->tv_nsec;
}
return ts;
}
int
timespec_lower(struct timespec *what, struct timespec *than)
{
if (what->tv_sec > than->tv_sec)
return 0;
if (what->tv_sec < than->tv_sec)
return 1;
if (what->tv_nsec < than->tv_nsec)
return 1;
return 0;
}
void
log_timing(FILE *handler, timing_point_t *t)
{
fprintf(handler,
"%d\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%lu\t%ld",
t->ind,
t->period,
t->min_et,
t->max_et,
t->rel_start_time,
t->abs_start_time,
t->end_time,
t->deadline,
t->duration,
t->slack
);
#ifdef AQUOSA
fprintf(handler,
"\t" QRES_TIME_FMT "\t" QRES_TIME_FMT,
t->budget,
t->used_budget
);
#endif
fprintf(handler, "\n");
}
#ifdef DLSCHED
pid_t
gettid(void)
{
return syscall(__NR_gettid);
}
int
string_to_policy(const char *policy_name, policy_t *policy)
{
if (strcmp(policy_name, "SCHED_OTHER") == 0)
*policy = other;
else if (strcmp(policy_name, "SCHED_RR") == 0)
*policy = rr;
else if (strcmp(policy_name, "SCHED_FIFO") == 0)
*policy = fifo;
#ifdef DLSCHED
else if (strcmp(policy_name, "SCHED_DEADLINE") == 0)
*policy = deadline;
#endif
#ifdef AQUOSA
else if ( (strcmp(policy_name, "AQUOSA") == 0) || \
(strcmp(policy_name, "AQuoSA") == 0))
*policy = aquosa;
#endif
else
return 1;
return 0;
}
int
policy_to_string(policy_t policy, char *policy_name)
{
switch (policy) {
case other:
strcpy(policy_name, "SCHED_OTHER");
break;
case rr:
strcpy(policy_name, "SCHED_RR");
break;
case fifo:
strcpy(policy_name, "SCHED_FIFO");
break;
#ifdef DLSCHED
case deadline:
strcpy(policy_name, "SCHED_DEADLINE");
break;
#endif
#ifdef AQUOSA
case aquosa:
strcpy(policy_name, "AQuoSA");
break;
#endif
default:
return 1;
}
return 0;
}
#endif
int ftrace_write(int mark_fd, const char *fmt, ...)
{
va_list ap;
int n, size = BUF_SIZE;
char *tmp, *ntmp;
if (mark_fd < 0)
return -1;
if ((tmp = malloc(size)) == NULL)
return -1;
while(1) {
/* Try to print in the allocated space */
va_start(ap, fmt);
n = vsnprintf(tmp, BUF_SIZE, fmt, ap);
va_end(ap);
/* If it worked return success */
if (n > -1 && n < size) {
write(mark_fd, tmp, n);
free(tmp);
return 1;
}
/* Else try again with more space */
if (n > -1) /* glibc 2.1 */
size = n+1;
else /* glibc 2.0 */
size *= 2;
if ((ntmp = realloc(tmp, size)) == NULL) {
free(tmp);
return -1;
} else {
tmp = ntmp;
}
}
}
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