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// clockmaster.c - clock synchronization test/demo
//
// This program works with clockslave.c. It monitors clock
// synchronization and status updates.
//
#include "o2.h"
#include "stdio.h"
#include "string.h"
#ifdef WIN32
#include "usleep.h" // special windows implementation of sleep/usleep
#else
#include <unistd.h>
#endif
o2_time cs_time = 1000000.0;
// this is a handler that polls for current status
//
void clockmaster(o2_msg_data_ptr msg, const char *types,
o2_arg_ptr *argv, int argc, void *user_data)
{
int ss = o2_status("server");
int cs = o2_status("client");
printf("clockmaster: local time %g global time %g "
"server status %d client status %d\n",
o2_local_time(), o2_time_get(), ss, cs);
// record when the client synchronizes
if (cs == O2_REMOTE) {
if (o2_time_get() < cs_time) {
cs_time = o2_time_get();
printf("clockmaster sync time %g\n", cs_time);
}
}
// stop 10s later
if (o2_time_get() > cs_time + 10) {
o2_stop_flag = TRUE;
printf("clockmaster set stop flag TRUE at %g\n", o2_time_get());
}
o2_send("!server/clockmaster", o2_time_get() + 1, "");
}
int main(int argc, const char * argv[])
{
printf("Usage: clockmaster [debugflags] "
"(see o2.h for flags, use a for all)\n");
if (argc == 2) {
o2_debug_flags(argv[1]);
printf("debug flags are: %s\n", argv[1]);
}
if (argc > 2) {
printf("WARNING: clockmaster ignoring extra command line argments\n");
}
o2_initialize("test");
o2_service_new("server");
o2_method_new("/server/clockmaster", "", &clockmaster, NULL, FALSE, FALSE);
// we are the master clock
o2_clock_set(NULL, NULL);
o2_send("!server/clockmaster", 0.0, ""); // start polling
o2_run(100);
o2_finish();
sleep(1);
printf("CLOCKMASTER DONE\n");
return 0;
}
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