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#include <common.h>
/**
** Idle process: write, getpid, gettime, exit
**
** Reports itself, then loops forever delaying and printing a character.
** MUST NOT SLEEP, as it must always be available in the ready queue
** when there is no other process to dispatch.
**
** Invoked as: idle
*/
USERMAIN(main)
{
// this is the character we will repeatedly print
char ch = '.';
// ignore the command-line arguments
(void)argc;
(void)argv;
// get some current information
uint_t pid = getpid();
uint32_t now = gettime();
enum priority_e prio = getprio();
char buf[128];
sprint(buf, "Idle [%d], started @ %u\n", pid, prio, now);
cwrites(buf);
// report our presence on the console
cwrites("Idle started\n");
write(CHAN_SIO, &ch, 1);
// idle() should never block - it must always be available
// for dispatching when we need to pick a new current process
for (;;) {
DELAY(LONG);
write(CHAN_SIO, &ch, 1);
}
// we should never reach this point!
now = gettime();
sprint(buf, "Idle [%d] EXITING @ %u!?!?!\n", pid, now);
cwrites(buf);
exit(1);
return (42);
}
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