#include "common.h" /** ** User function P: exit, sleep, write, gettime ** ** Reports itself, then loops reporting itself ** ** Invoked as: userP x [ n [ t ] ] ** where x is the ID character ** n is the iteration count (defaults to 3) ** t is the sleep time (defaults to 2 seconds) */ USERMAIN(main) { int count = 3; // default iteration count char ch = 'p'; // default character to print int nap = 2; // nap time char buf[128]; // process the command-line arguments switch (argc) { case 4: nap = str2int(argv[3], 10); // FALL THROUGH case 3: count = str2int(argv[2], 10); // FALL THROUGH case 2: ch = argv[1][0]; break; default: sprint(buf, "userP: argc %d, args: ", argc); cwrites(buf); for (int i = 0; i <= argc; ++i) { sprint(buf, " %s", argv[argc] ? argv[argc] : "(null)"); cwrites(buf); } cwrites("\n"); } // announce our presence uint32_t now = gettime(); sprint(buf, " P@%u", now); swrites(buf); for (int i = 0; i < count; ++i) { sleep(SEC_TO_MS(nap)); write(CHAN_SIO, &ch, 1); } exit(0); return (42); // shut the compiler up! }