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- head 2.1;
- branch ;
- access ;
- symbols no-auto-remigrate:2.1 installed:2.0;
- locks ; strict;
- comment @ * @;
-
-
- 2.1
- date 90.06.22.14.58.23; author douglis; state Exp;
- branches ;
- next 2.0;
-
- 2.0
- date 90.03.10.13.12.50; author douglis; state Stable;
- branches ;
- next 1.3;
-
- 1.3
- date 90.03.10.13.11.16; author douglis; state Exp;
- branches ;
- next 1.2;
-
- 1.2
- date 90.02.28.10.58.07; author douglis; state Exp;
- branches ;
- next 1.1;
-
- 1.1
- date 90.02.16.14.29.24; author douglis; state Exp;
- branches ;
- next ;
-
-
- desc
- @Source code for the Mig_GetInfo procedure, which gets migration
- and load information for a particular host. Note: if getting
- local information, the "state" of the machine is not guaranteed to
- be accurate; this variant is provided just for getting updated load
- averages periodically.
- @
-
-
- 2.1
- log
- @changes for alarms for timeouts with migd and for printing to stderr instead of syslog
- @
- text
- @/*
- * Mig_GetInfo.c --
- *
- * Source code for the Mig_GetInfo procedure, which gets migration
- * and load information for a particular host. Note: if getting
- * local information, the "state" of the machine is not guaranteed to
- * be accurate; this variant is provided just for getting updated load
- * averages periodically.
- *
- * Copyright 1990 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: /sprite/src/lib/c/mig/RCS/Mig_GetInfo.c,v 2.0 90/03/10 13:12:50 douglis Stable Locker: douglis $ SPRITE (Berkeley)";
- #endif not lint
-
- #include <sprite.h>
- #include <stdio.h>
- #include <mig.h>
- #include <kernel/net.h>
- #include <errno.h>
-
- extern int errno;
- extern char *strerror();
- extern char *malloc();
-
-
- /*
- *----------------------------------------------------------------------
- *
- * Mig_GetInfo --
- *
- * Get the record for the given host (PROC_MY_HOSTID implies the current
- * host).
- *
- * Results:
- * A pointer to a static area (valid until the next call to Mig_GetInfo)
- * is returned if the call is successful. On error, NULL is returned.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- #define INFO_BUF_SIZE (2 * sizeof(int) + sizeof(Mig_Info))
- Mig_Info *
- Mig_GetInfo(hostID)
- int hostID;
- {
- int status;
- Mig_InfoRequest request;
- static Mig_Info info; /* Migration data, returned to user. */
- static char *buffer = NULL;
- int retry = 1;
-
- if (hostID == PROC_MY_HOSTID) {
- if (mig_LocalPdev < 0) {
- if (MigOpenPdev(FALSE) < 0) {
- return((Mig_Info *) NULL);
- }
- }
- while (retry >= 0) {
- status = read(mig_LocalPdev, (char *) &info, sizeof(Mig_Info));
- if (status != sizeof(Mig_Info)) {
- close(mig_LocalPdev);
- mig_LocalPdev = -1;
- if (retry == 0 || MigOpenPdev(FALSE) < 0) {
- fprintf(stderr,
- "Mig_GetInfo: error reading load from migd: %s\n",
- strerror(errno));
- return((Mig_Info *) NULL);
- }
- retry--;
- } else {
- break;
- }
- }
- } else {
- if (mig_GlobalPdev < 0) {
- if (MigOpenPdev(TRUE) < 0) {
- return((Mig_Info *) NULL);
- }
- }
- if (buffer == (char *) NULL) {
- buffer = malloc(INFO_BUF_SIZE);
- if (buffer == (char *) NULL) {
- /*
- * Out of memory?!
- */
- return((Mig_Info *) NULL);
- }
- }
- request.numRecs = 1;
- request.firstHost = hostID;
- while (retry >= 0) {
- if (MigSetAlarm() < 0) {
- fprintf(stderr,
- "Error setting alarm for contact with migd.\n");
- return((Mig_Info *) NULL);
- }
- status = Fs_IOControl(mig_GlobalPdev, IOC_MIG_GETINFO,
- sizeof(Mig_InfoRequest),
- (char *) &request,
- INFO_BUF_SIZE, (char *) buffer);
- if (MigClearAlarm() < 0) {
- fprintf(stderr,
- "Error clearing alarm for contact with migd.\n");
- }
- if (status != SUCCESS) {
- close(mig_GlobalPdev);
- mig_GlobalPdev = -1;
- if (retry == 0 || MigOpenPdev(TRUE) < 0) {
- fprintf(stderr,
- "Mig_GetInfo: error during ioctl to global master: %s\n",
- Stat_GetMsg(status));
- errno = Compat_MapCode(status);
- return((Mig_Info *) NULL);
- }
- retry--;
- } else {
- break;
- }
- }
- if (*((int *) buffer) != 1) {
- fprintf(stderr,
- "Mig_GetInfo: Got %d hosts during ioctl to global master.\n",
- *((int *) buffer));
- return((Mig_Info *) NULL);
- }
- bcopy(buffer + 2 * sizeof(int), (char *) &info,
- sizeof(Mig_Info));
- }
- return(&info);
- }
-
- @
-
-
- 2.0
- log
- @Changing version numbers.
- @
- text
- @d21 1
- a21 1
- static char rcsid[] = "$Header: /sprite/src/lib/c/mig/RCS/Mig_GetInfo.c,v 1.3 90/03/10 13:11:16 douglis Exp Locker: douglis $ SPRITE (Berkeley)";
- d25 1
- a26 1
- #include <syslog.h>
- d76 1
- a76 1
- syslog(LOG_WARNING,
- d104 5
- d113 4
- d121 1
- a121 1
- syslog(LOG_WARNING,
- d133 1
- a133 1
- syslog(LOG_WARNING,
- @
-
-
- 1.3
- log
- @changed when it prints syslog message
- @
- text
- @d21 1
- a21 1
- static char rcsid[] = "$Header: /sprite/src/lib/c/mig/RCS/Mig_GetInfo.c,v 1.2 90/02/28 10:58:07 douglis Exp Locker: douglis $ SPRITE (Berkeley)";
- @
-
-
- 1.2
- log
- @changed Mig_OpenPdev to internal Mig routine. retry after read of local
- pdev fails.
- @
- text
- @d21 1
- a21 1
- static char rcsid[] = "$Header: /sprite/src/lib/c/mig/RCS/Mig_GetInfo.c,v 1.1 90/02/16 14:29:24 douglis Exp Locker: douglis $ SPRITE (Berkeley)";
- a72 3
- syslog(LOG_WARNING,
- "Mig_GetInfo: error reading load from migd: %s\n",
- strerror(status));
- d76 3
- a78 1
- errno = Compat_MapCode(status);
- a108 3
- syslog(LOG_WARNING,
- "Mig_GetInfo: error during ioctl to global master: %s\n",
- Stat_GetMsg(status));
- d112 3
- @
-
-
- 1.1
- log
- @Initial revision
- @
- text
- @d21 1
- a21 1
- static char rcsid[] = "$Header: /user2/douglis/pdev_mig/mig_p/RCS/Mig_GetInfo.c,v 1.2 90/02/13 10:07:12 douglis Exp Locker: douglis $ SPRITE (Berkeley)";
- d66 1
- a66 1
- if (Mig_OpenPdev(FALSE) < 0) {
- d70 16
- a85 3
- status = read(mig_LocalPdev, (char *) &info, sizeof(Mig_Info));
- if (status != sizeof(Mig_Info)) {
- return((Mig_Info *) NULL);
- d89 1
- a89 1
- if (Mig_OpenPdev(TRUE) < 0) {
- d115 1
- a115 1
- if (retry == 0 || Mig_OpenPdev(TRUE) < 0) {
- @
-