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46364cb2f3
OpenZFS provides a library called tpool which implements thread pools for user space applications. Porting this library means the zpool utility no longer needs to borrow the kernel mutex and taskq interfaces from libzpool. This code was updated to use the tpool library which behaves in a very similar fashion. Porting libtpool was relatively straight forward and minimal modifications were needed. The core changes were: * Fully convert the library to use pthreads. * Updated signal handling. * lmalloc/lfree converted to calloc/free * Implemented portable pthread_attr_clone() function. Finally, update the build system such that libzpool.so is no longer linked in to zfs(8), zpool(8), etc. All that is required is libzfs to which the zcommon soures were added (which is the way it always should have been). Removing the libzpool dependency resulted in several build issues which needed to be resolved. * Moved zfeature support to module/zcommon/zfeature_common.c * Moved ratelimiting to to module/zfs/zfs_ratelimit.c * Moved get_system_hostid() to lib/libspl/gethostid.c * Removed use of cmn_err() in zcommon source * Removed dprintf_setup() call from zpool_main.c and zfs_main.c * Removed highbit() and lowbit() * Removed unnecessary library dependencies from Makefiles * Removed fletcher-4 kstat in user space * Added sha2 support explicitly to libzfs * Added highbit64() and lowbit64() to zpool_util.c Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #6442
140 lines
2.8 KiB
C
140 lines
2.8 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#include <errno.h>
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#include <libgen.h>
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#include <libintl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <ctype.h>
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#include "zpool_util.h"
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/*
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* Utility function to guarantee malloc() success.
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*/
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void *
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safe_malloc(size_t size)
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{
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void *data;
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if ((data = calloc(1, size)) == NULL) {
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(void) fprintf(stderr, "internal error: out of memory\n");
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exit(1);
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}
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return (data);
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}
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/*
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* Display an out of memory error message and abort the current program.
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*/
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void
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zpool_no_memory(void)
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{
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assert(errno == ENOMEM);
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(void) fprintf(stderr,
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gettext("internal error: out of memory\n"));
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exit(1);
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}
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/*
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* Return the number of logs in supplied nvlist
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*/
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uint_t
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num_logs(nvlist_t *nv)
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{
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uint_t nlogs = 0;
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uint_t c, children;
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nvlist_t **child;
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if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
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&child, &children) != 0)
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return (0);
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for (c = 0; c < children; c++) {
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uint64_t is_log = B_FALSE;
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(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
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&is_log);
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if (is_log)
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nlogs++;
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}
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return (nlogs);
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}
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/* Find the max element in an array of uint64_t values */
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uint64_t
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array64_max(uint64_t array[], unsigned int len)
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{
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uint64_t max = 0;
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int i;
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for (i = 0; i < len; i++)
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max = MAX(max, array[i]);
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return (max);
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}
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/*
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* Return 1 if "str" is a number string, 0 otherwise. Works for integer and
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* floating point numbers.
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*/
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int
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isnumber(char *str)
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{
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for (; *str; str++)
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if (!(isdigit(*str) || (*str == '.')))
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return (0);
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return (1);
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}
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/*
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* Find highest one bit set.
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* Returns bit number + 1 of highest bit that is set, otherwise returns 0.
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*/
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int
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highbit64(uint64_t i)
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{
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if (i == 0)
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return (0);
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return (NBBY * sizeof (uint64_t) - __builtin_clzll(i));
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}
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/*
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* Find lowest one bit set.
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* Returns bit number + 1 of lowest bit that is set, otherwise returns 0.
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*/
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int
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lowbit64(uint64_t i)
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{
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if (i == 0)
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return (0);
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return (__builtin_ffsll(i));
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}
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