1 files changed, 0 insertions, 102 deletions
diff --git a/user/progR.c b/user/progR.c
deleted file mode 100644
index 672318b..0000000
--- a/user/progR.c
+++ /dev/null
@@ -1,102 +0,0 @@
-#include <common.h>
-
-/**
-** User function R:   exit, sleep, write, fork, getpid, getppid,
-**
-** Reports itself and its sequence number, along with its PID and
-** its parent's PID. It then delays, forks, delays, reports again,
-** and exits.
-**
-** Invoked as:  userR  x  n  [ s ]
-**	 where x is the ID character
-**		   n is the sequence number of the initial incarnation
-**		   s is the initial delay time (defaults to 10)
-*/
-
-USERMAIN(main)
-{
-	char ch = 'r'; // default character to print
-	int delay = 10; // initial delay count
-	int seq = 99; // my sequence number
-	char buf[128];
-
-	// process the command-line arguments
-	switch (argc) {
-	case 4:
-		delay = str2int(argv[3], 10);
-		// FALL THROUGH
-	case 3:
-		seq = str2int(argv[2], 10);
-		// FALL THROUGH
-	case 2:
-		ch = argv[1][0];
-		break;
-	default:
-		sprint(buf, "userR: 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");
-	}
-
-	/*
-	** C oddity: a label cannot immediately precede a declaration.
-	**
-	** Declarations are not considered "statements" in C. Prior to
-	** C99, all declarations had to precede any statements inside a
-	** block. Labels can only appear before statements.  C99 allowed
-	** the mixing of declarations and statements, but did not relax
-	** the requirement that labels precede only statements.
-	**
-	** That's why the declarations of these variables occur before the
-	** label, but their initializations occur after the label.
-	**
-	** As the PSA says on TV, "The more you know..." :-)
-	*/
-
-	int32_t pid;
-	int32_t ppid;
-
-restart:
-
-	// announce our presence
-	pid = getpid();
-	ppid = getppid();
-
-	sprint(buf, " %c[%d,%d,%d]", ch, seq, pid, ppid);
-	swrites(buf);
-
-	sleep(SEC_TO_MS(delay));
-
-	// create the next child in sequence
-	if (seq < 5) {
-		++seq;
-		int32_t n = fork();
-		switch (n) {
-		case -1:
-			// failure?
-			sprint(buf, "** R[%d] fork code %d\n", pid, n);
-			cwrites(buf);
-			break;
-		case 0:
-			// child
-			goto restart;
-		default:
-			// parent
-			--seq;
-			sleep(SEC_TO_MS(delay));
-		}
-	}
-
-	// final report - PPID may change, but PID and seq shouldn't
-	pid = getpid();
-	ppid = getppid();
-	sprint(buf, " %c[%d,%d,%d]", ch, seq, pid, ppid);
-	swrites(buf);
-
-	exit(0);
-
-	return (42); // shut the compiler up!
-}