From: Martin Mares <mj@ucw.cz>
Date: Sun, 12 Feb 2012 17:49:57 +0000 (+0100)
Subject: Wait 5ms between packets
X-Git-Tag: v1.2~3
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=cbe5d5b80e5cc6bcb6a63ab08aac423667e97cdf;p=arexx.git

Wait 5ms between packets

I suspect that the occasional data loss when transmitting lots of
data points is caused by buggy firmware which drops packets sent
too quickly.
---

diff --git a/arexxd.c b/arexxd.c
index 3baaefd..e82fc84 100644
--- a/arexxd.c
+++ b/arexxd.c
@@ -494,10 +494,11 @@ static void sigterm_handler(int sig __attribute__((unused)))
 	want_shutdown = 1;
 }
 
-static void interruptible_sleep(int seconds)
+static void interruptible_msleep(int ms)
 {
 	sigprocmask(SIG_UNBLOCK, &term_sigs, NULL);
-	sleep(seconds);
+	struct timespec ts = { .tv_sec = ms/1000, .tv_nsec = (ms%1000) * 1000000 };
+	nanosleep(&ts, NULL);
 	sigprocmask(SIG_BLOCK, &term_sigs, NULL);
 }
 
@@ -586,7 +587,7 @@ int main(int argc, char **argv)
 				inited = 1;
 				log_error("Data logger not connected, waiting until it appears");
 			}
-			interruptible_sleep(30);
+			interruptible_msleep(30000);
 			continue;
 		}
 		log_info("Listening");
@@ -619,15 +620,16 @@ int main(int argc, char **argv)
 			if (err > 0 && parse_packet(reply))
 				want_sleep = 0;
 			if (want_sleep) {
-				interruptible_sleep(4);
+				interruptible_msleep(4000);
 				want_stats = 1;
-			}
+			} else
+				interruptible_msleep(5);
 		}
 
 		log_info("Disconnecting data logger");
 		release_device();
 		inited = 0;
-		interruptible_sleep(10);
+		interruptible_msleep(10000);
 	}
 
 	log_info("Terminated");