Start of wakeup framework.

Makefile

@@ -11,5 +11,5 @@ clean:
 %.o: %.c *.h
 	$(CC) -c $(CFLAGS) $< -o $@
 
-adsbus: adsbus.o receive.o send.o incoming.o outgoing.o airspy_adsb.o beast.o json.o raw.o stats.o common.o
-	$(CC) $(LDFLAGS) -o adsbus adsbus.o receive.o send.o incoming.o outgoing.o airspy_adsb.o beast.o json.o raw.o stats.o common.o $(LIBS)
+adsbus: adsbus.o receive.o send.o incoming.o outgoing.o airspy_adsb.o beast.o json.o raw.o stats.o wakeup.o common.o
+	$(CC) $(LDFLAGS) -o adsbus adsbus.o receive.o send.o incoming.o outgoing.o airspy_adsb.o beast.o json.o raw.o stats.o wakeup.o common.o $(LIBS)

adsbus.c

@@ -4,6 +4,7 @@
 #include <string.h>
 
 #include "common.h"
+#include "wakeup.h"
 
 #include "receive.h"
 #include "send.h"
@@ -174,9 +175,13 @@ static bool parse_opts(int argc, char *argv[]) {
 }
 
 int main(int argc, char *argv[]) {
-	peer_init();
 	hex_init();
+
+	peer_init();
+	wakeup_init();
+
 	send_init();
+
 	airspy_adsb_init();
 	beast_init();
 	json_init();

wakeup.c

@@ -0,0 +1,14 @@
+#include <assert.h>
+#include <unistd.h>
+
+#include "common.h"
+
+#include "wakeup.h"
+
+void wakeup_init() {
+	int pipefd[2];
+	assert(!pipe(pipefd));
+}
+
+void wakeup_add(struct peer *peer, int delay_ms) {
+}

wakeup.h

@@ -0,0 +1,6 @@
+#pragma once
+
+struct peer;
+
+void wakeup_init();
+void wakeup_add(struct peer *, int);