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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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