Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/regress/sys Add some pretty simple tests for various memory ...
details: https://anonhg.NetBSD.org/src/rev/3e27fcf4b77b
branches: trunk
changeset: 473779:3e27fcf4b77b
user: thorpej <thorpej%NetBSD.org@localhost>
date: Sat Jun 19 00:53:31 1999 +0000
description:
Add some pretty simple tests for various memory mapping facilities.
There's lots more work to do here, but this simple program found a
couple of problems which I've fixed recently.
diffstat:
regress/sys/Makefile | 4 +-
regress/sys/uvm/Makefile | 5 +
regress/sys/uvm/mmap/Makefile | 16 +++
regress/sys/uvm/mmap/mmap.c | 224 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 247 insertions(+), 2 deletions(-)
diffs (269 lines):
diff -r b8f5eb508696 -r 3e27fcf4b77b regress/sys/Makefile
--- a/regress/sys/Makefile Sat Jun 19 00:40:29 1999 +0000
+++ b/regress/sys/Makefile Sat Jun 19 00:53:31 1999 +0000
@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.8 1999/03/10 18:57:06 bouyer Exp $
+# $NetBSD: Makefile,v 1.9 1999/06/19 00:53:31 thorpej Exp $
-SUBDIR= kern fs
+SUBDIR= kern fs uvm
.if exists(arch/${MACHINE})
SUBDIR+= arch/${MACHINE}
.endif
diff -r b8f5eb508696 -r 3e27fcf4b77b regress/sys/uvm/Makefile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/sys/uvm/Makefile Sat Jun 19 00:53:31 1999 +0000
@@ -0,0 +1,5 @@
+# $NetBSD: Makefile,v 1.1 1999/06/19 00:53:32 thorpej Exp $
+
+SUBDIR+= mmap
+
+.include <bsd.subdir.mk>
diff -r b8f5eb508696 -r 3e27fcf4b77b regress/sys/uvm/mmap/Makefile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/sys/uvm/mmap/Makefile Sat Jun 19 00:53:31 1999 +0000
@@ -0,0 +1,16 @@
+# $NetBSD: Makefile,v 1.1 1999/06/19 00:53:32 thorpej Exp $
+
+PROG= mmap
+MKMAN= no
+
+# This is hopefully just some file not mmap'd very often.
+SOME_FILE=/usr/share/misc/zipcodes
+
+regress:
+ @if ./mmap ${SOME_FILE}; then \
+ echo "PASSED"; \
+ else \
+ echo "FAILED"; \
+ fi
+
+.include <bsd.prog.mk>
diff -r b8f5eb508696 -r 3e27fcf4b77b regress/sys/uvm/mmap/mmap.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/sys/uvm/mmap/mmap.c Sat Jun 19 00:53:31 1999 +0000
@@ -0,0 +1,224 @@
+/* $NetBSD: mmap.c,v 1.1 1999/06/19 00:53:32 thorpej Exp $ */
+
+/*-
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Test various memory mapping facilities.
+ */
+
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main __P((int, char *[]));
+void usage __P((void));
+
+int check_residency __P((void *, int));
+
+int pgsize;
+int verbose;
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct stat st;
+ void *addr, *addr2;
+ int ch, ecode, fd, npgs;
+ const char *filename;
+
+ while ((ch = getopt(argc, argv, "v")) != -1) {
+ switch (ch) {
+ case 'v':
+ verbose = 1;
+ break;
+
+ default:
+ usage();
+ }
+ }
+ argv += optind;
+ argc -= optind;
+
+ if (argc != 1)
+ usage();
+
+ filename = argv[0];
+
+ ecode = 0;
+
+ pgsize = sysconf(_SC_PAGESIZE);
+
+ /*
+ * TEST MLOCKING A FILE.
+ */
+
+ printf(">>> MAPPING FILE <<<\n");
+
+ fd = open(filename, O_RDONLY, 0666);
+ if (fd == -1)
+ err(1, "open %s", filename);
+
+ if (fstat(fd, &st) == -1)
+ err(1, "fstat %s", filename);
+
+ addr = mmap(NULL, (size_t) st.st_size, PROT_READ, MAP_FILE|MAP_SHARED,
+ fd, (off_t) 0);
+ if (addr == MAP_FAILED)
+ err(1, "mmap %s", filename);
+
+ (void) close(fd);
+
+ npgs = (st.st_size / pgsize) + 1;
+
+ printf(" CHECKING RESIDENCY\n");
+
+ (void) check_residency(addr, npgs);
+
+ printf(" LOCKING RANGE\n");
+
+ if (mlock(addr, npgs * pgsize) == -1)
+ err(1, "mlock %s", filename);
+
+ printf(" CHECKING RESIDENCY\n");
+
+ if (check_residency(addr, npgs) != npgs) {
+ printf(" RESIDENCY CHECK FAILED!\n");
+ ecode = 1;
+ }
+
+ printf(" UNLOCKING RANGE\n");
+
+ if (munlock(addr, pgsize) == -1)
+ err(1, "munlock %s", filename);
+
+ (void) munmap(addr, st.st_size);
+
+ /*
+ * TEST MLOCKALL'ING AN ANONYMOUS MEMORY RANGE.
+ */
+
+ npgs = 8;
+
+ printf(">>> MAPPING %d PAGE ANONYMOUS REGION <<<\n", npgs);
+
+ addr = mmap(NULL, npgs * pgsize, PROT_READ|PROT_WRITE,
+ MAP_ANON|MAP_PRIVATE, -1, (off_t) 0);
+ if (addr == MAP_FAILED)
+ err(1, "mmap anon #1");
+
+ printf(" CHECKING RESIDENCY\n");
+
+ (void) check_residency(addr, npgs);
+
+ printf(" LOCKING ALL - CURRENT and FUTURE\n");
+
+ if (mlockall(MCL_CURRENT|MCL_FUTURE) == -1)
+ err(1, "mlockall current/future");
+
+ printf(" CHECKING RESIDENCY\n");
+
+ if (check_residency(addr, npgs) != npgs) {
+ printf(" RESIDENCY CHECK FAILED!\n");
+ ecode = 1;
+ }
+
+ printf(">>> MAPPING ANOTHER %d PAGE ANONYMOUS REGION <<<\n", npgs);
+
+ addr2 = mmap(NULL, npgs * pgsize, PROT_READ, MAP_ANON, -1, (off_t) 0);
+ if (addr == MAP_FAILED)
+ err(1, "mmap anon #2");
+
+ printf(" CHECKING RESIDENCY\n");
+
+ if (check_residency(addr2, npgs) != npgs) {
+ printf(" RESIDENCY CHECK FAILED!\n");
+ ecode = 1;
+ }
+
+ printf(" UNLOCKING ALL\n");
+
+ (void) munlockall();
+
+ exit(ecode);
+}
+
+int
+check_residency(addr, npgs)
+ void *addr;
+ int npgs;
+{
+ char *vec;
+ int i, resident;
+
+ vec = malloc(npgs);
+ if (vec == NULL)
+ err(1, "malloc mincore vec");
+
+ if (mincore(addr, npgs * pgsize, vec) == -1)
+ err(1, "mincore");
+
+ for (i = 0, resident = 0; i < npgs; i++) {
+ if (vec[i] != 0)
+ resident++;
+ if (verbose)
+ printf("page 0x%lx is %sresident\n",
+ addr + (i * pgsize), vec[i] ? "" : "not ");
+ }
+
+ free(vec);
+
+ return (resident);
+}
+
+void
+usage()
+{
+ extern const char *__progname;
+
+ fprintf(stderr, "usage: %s [-v] filename\n", __progname);
+ exit(1);
+}
Home |
Main Index |
Thread Index |
Old Index