first usable version of kernel and commands

After an year of hard work, this is a first "usable" version of Jehanne.
2016-11-25 16:18:40 +00:00
parent 391252a059
commit 38aca7a581
3989 changed files with 406697 additions and 1909 deletions
--- a/qa/lib/c/sleep.c
+++ b/qa/lib/c/sleep.c
@@ -0,0 +1,90 @@
+/*
+ * This file is part of Jehanne.
+ *
+ * Copyright (C) 2015 Giacomo Tesio <giacomo@tesio.it>
+ *
+ * Jehanne is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * Jehanne is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Jehanne.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <u.h>
+#include <libc.h>
+
+/* Test sleep(2):
+ * - sleep cannot be interrupted
+ * - sleep give back the control (more or less) on time
+ *
+ * Given we have two clocks at work here, we can use one to
+ * check the other:
+ * - nsec() is an high resolution clock from RDTSC instruction
+ *   (see sysproc.c, portclock.c and tod.c in sys/src/9/port)
+ * - sys->ticks incremented by hzclock (in portclock.c) that
+ *   is used by alarm (and sleep and the kernel scheduler)
+ */
+int verbose = 0;
+
+int
+printFirst(void *v, char *s)
+{
+	/* just not exit, please */
+	if(strcmp(s, "alarm") == 0){
+		if(verbose)
+			fprint(2, "%d: noted: %s at %lld\n", getpid(), s, nsec());
+		atnotify(printFirst, 0);
+		return 1;
+	}
+	return 0;
+}
+
+int
+failOnSecond(void *v, char *s)
+{
+	/* just not exit, please */
+	if(strcmp(s, "alarm") == 0){
+		print("FAIL\n");
+		exits("FAIL");
+	}
+	return 0;
+}
+
+void
+main(void)
+{
+	int64_t a2000, a500, tStart, tEnd;
+	if (!atnotify(printFirst, 1) || !atnotify(failOnSecond, 1)){
+		fprint(2, "%r\n");
+		exits("atnotify fails");
+	}
+
+	alarm(2000);
+	a2000 = nsec();
+	alarm(500);
+	a500 = nsec();
+	tStart = nsec();
+	sleep(1000);
+	tEnd = nsec();
+
+	if(verbose)
+		fprint(2, "%d: set alarm(2000)@%lld then alarm(500)@%lld; elapsed in sleep() %lld nanosecond\n", getpid(), a2000, a500, tEnd-tStart);
+
+	if(tEnd-tStart > 1200 * 1000 * 1000){
+		print("FAIL: should sleep less\n");
+		exits("FAIL");
+	}
+
+	if(tEnd-tStart < 800 * 1000 * 1000){
+		print("FAIL: should sleep more\n");
+		exits("FAIL");
+	}
+
+	print("PASS\n");
+	exits("PASS");
+}