int main (int argc, char **argv)
{
if( argc != 2 )
{
die_sans_errno(
"Usage:\n"
" sysmon <format_string>\n\n"
" sysmon is a terminal app that outputs various system\n"
" information on a single line to standard output. sysmon\n"
" exits after the line is printed.\n\n"
" format_string is a string of characters that represents how\n"
" the monitors will be displayed. Each monitor is represented\n"
" with a unique character, which are listed below:\n\n"
" c - cpu activity monitor\n"
" m - used memory monitor\n"
" i - io activity monitor\n"
" d - date monitor\n\n"
" All other characters that appear in format_string are\n"
" printed as is.\n\n"
"Example:\n"
" sysmon \"c | m | i | d\"" );
}
// char mon_format[] = "c | m | i | d";
char *mon_format = argv[1];
int mon_format_size = strlen( mon_format );
// pass 1, determine how many separators and monitors in mon_format
int i;
int monitor_count = 0;
for( i = 0; i < mon_format_size; i++ )
{
switch( mon_format[i] )
{
case 'c':
case 'm':
case 'i':
case 'd':
monitor_count++;
}
}
int separator_count = mon_format_size - monitor_count;
// allocate space for separators and monitors arrays
monitor_t *monitors = malloc( sizeof( monitor_t ) * monitor_count );
int *monitors_order = malloc( sizeof( int ) * monitor_count );
char *separators = malloc( sizeof( char ) * separator_count );
int *separators_order = malloc( sizeof( int ) * separator_count );
// pass 2, populate separators and monitors arrays
int monitors_index = 0;
int separators_index = 0;
for( i = 0; i < mon_format_size; i++ )
{
switch( mon_format[i] )
{
case 'c':
monitors[monitors_index] = cpu_mon;
monitors_order[monitors_index] = i;
monitors_index++;
break;
case 'm':
monitors[monitors_index] = mem_mon;
monitors_order[monitors_index] = i;
monitors_index++;
break;
case 'i':
monitors[monitors_index] = io_mon;
monitors_order[monitors_index] = i;
monitors_index++;
break;
case 'd':
monitors[monitors_index] = date_mon;
monitors_order[monitors_index] = i;
monitors_index++;
break;
default:
separators[separators_index] = mon_format[i];
separators_order[separators_index] = i;
separators_index++;
break;
}
}
multithread_init( monitors, monitors_order, monitor_count, separators,
separators_order, separator_count );
free( monitors );
free( monitors_order );
free( separators );
free( separators_order );
return 0;
}
void tirpc_criticalsection_init(void) {
multithread_init();
}
