4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #pragma ident "%Z%%M% %I% %E% SMI"
27
28 #include <sys/mman.h>
29 #include <sys/param.h>
30 #include <sys/stat.h>
31 #include <sys/types.h>
32 #include <assert.h>
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <libproc.h>
36 #include <limits.h>
37 #include <procfs.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <strings.h>
41 #include <time.h>
42 #include <unistd.h>
43 #include "rcapd.h"
534 if (mappings_changed_cb != NULL)
535 mappings_changed_cb(lpc);
536 }
537 return (0);
538 }
539
540 /*
541 * Attempt to page out a region of the given process's address space. May
542 * return nonzero if not all of the pages may are pageable, for any reason.
543 */
544 static int
545 pageout(pid_t pid, struct ps_prochandle *Pr, caddr_t start, caddr_t end)
546 {
547 int res;
548
549 if (end <= start)
550 return (0);
551
552 errno = 0;
553 res = pr_memcntl(Pr, start, (end - start), MC_SYNC,
554 (caddr_t)(MS_ASYNC | MS_INVALIDATE), 0, 0);
555 debug_high("pr_memcntl [%p-%p): %d", (void *)start, (void *)end, res);
556
557 /*
558 * EBUSY indicates none of the pages have backing store allocated, or
559 * some pages were locked, which are less interesting than other
560 * conditions, which are noted.
561 */
562 if (res != 0)
563 if (errno == EBUSY)
564 res = 0;
565 else
566 debug("%d: can't pageout %p+%llx (errno %d)", (int)pid,
567 (void *)start, (long long)(end - start), errno);
568
569 return (res);
570 }
571
572 /*
573 * Compute the delta of the victim process's RSS since the last call. If the
574 * psinfo cannot be obtained, no work is done, and no error is returned; it is
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4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 * Copyright 2012 Joyent, Inc. All rights reserved.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include <sys/mman.h>
30 #include <sys/param.h>
31 #include <sys/stat.h>
32 #include <sys/types.h>
33 #include <assert.h>
34 #include <errno.h>
35 #include <fcntl.h>
36 #include <libproc.h>
37 #include <limits.h>
38 #include <procfs.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <strings.h>
42 #include <time.h>
43 #include <unistd.h>
44 #include "rcapd.h"
535 if (mappings_changed_cb != NULL)
536 mappings_changed_cb(lpc);
537 }
538 return (0);
539 }
540
541 /*
542 * Attempt to page out a region of the given process's address space. May
543 * return nonzero if not all of the pages may are pageable, for any reason.
544 */
545 static int
546 pageout(pid_t pid, struct ps_prochandle *Pr, caddr_t start, caddr_t end)
547 {
548 int res;
549
550 if (end <= start)
551 return (0);
552
553 errno = 0;
554 res = pr_memcntl(Pr, start, (end - start), MC_SYNC,
555 (caddr_t)(MS_ASYNC | MS_INVALCURPROC), 0, 0);
556 debug_high("pr_memcntl [%p-%p): %d", (void *)start, (void *)end, res);
557
558 /*
559 * EBUSY indicates none of the pages have backing store allocated, or
560 * some pages were locked, which are less interesting than other
561 * conditions, which are noted.
562 */
563 if (res != 0)
564 if (errno == EBUSY)
565 res = 0;
566 else
567 debug("%d: can't pageout %p+%llx (errno %d)", (int)pid,
568 (void *)start, (long long)(end - start), errno);
569
570 return (res);
571 }
572
573 /*
574 * Compute the delta of the victim process's RSS since the last call. If the
575 * psinfo cannot be obtained, no work is done, and no error is returned; it is
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