williamp/osmocom-analog
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Move realtime scheduling and signal handling to common code

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This commit is contained in:
Andreas Eversberg
2016-11-13 06:37:56 +01:00
parent 4dacec9ceb
commit 2a4abc62b2
6 changed files with 36 additions and 131 deletions
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37
src/common/main_common.c
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@@ -23,6 +23,7 @@
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sched.h>
#include <unistd.h>
#include <math.h>
#include <termios.h>
@@ -256,7 +257,7 @@ void sighandler(int sigset)
if (sigset == SIGPIPE)
return;
fprintf(stderr, "Signal received: %d\n", sigset);
fprintf(stderr, "\nSignal received: %d\n", sigset);
quit = 1;
}
@@ -287,6 +288,24 @@ void main_loop(int *quit, int latency, int interval, void (*myhandler)(void))
struct termios term, term_orig;
int c;
/* catch signals */
signal(SIGINT, sighandler);
signal(SIGHUP, sighandler);
signal(SIGTERM, sighandler);
signal(SIGPIPE, sighandler);
/* real time priority */
if (rt_prio > 0) {
struct sched_param schedp;
int rc;
memset(&schedp, 0, sizeof(schedp));
schedp.sched_priority = rt_prio;
rc = sched_setscheduler(0, SCHED_RR, &schedp);
if (rc)
fprintf(stderr, "Error setting SCHED_RR with prio %d\n", rt_prio);
}
/* prepare terminal */
tcgetattr(0, &term_orig);
term = term_orig;
@@ -323,6 +342,7 @@ next_char:
switch (c) {
case 3:
/* quit */
fprintf(stderr, "\nCTRL+c received, quitting!\n");
*quit = 1;
goto next_char;
case 'w':
@@ -349,5 +369,20 @@ next_char:
/* reset terminal */
tcsetattr(0, TCSANOW, &term_orig);
/* reset real time prio */
if (rt_prio > 0) {
struct sched_param schedp;
memset(&schedp, 0, sizeof(schedp));
schedp.sched_priority = 0;
sched_setscheduler(0, SCHED_OTHER, &schedp);
}
/* reset signals */
signal(SIGINT, SIG_DFL);
signal(SIGHUP, SIG_DFL);
signal(SIGTERM, SIG_DFL);
signal(SIGPIPE, SIG_DFL);
}