File Manager

003 File Manager

Current Path: /usr/src/sys/sys

📁 ..
📄 _atomic64e.h(2.91 KB)
📄 _atomic_subword.h(7.27 KB)
📄 _bitset.h(2.3 KB)
📄 _blockcount.h(1.97 KB)
📄 _bus_dma.h(2.15 KB)
📄 _callout.h(2.68 KB)
📄 _cpuset.h(1.76 KB)
📄 _cscan_atomic.h(18.1 KB)
📄 _cscan_bus.h(10.22 KB)
📄 _domainset.h(2.04 KB)
📄 _eventhandler.h(2.81 KB)
📄 _ffcounter.h(1.84 KB)
📄 _iovec.h(1.93 KB)
📄 _lock.h(2.98 KB)
📄 _lockmgr.h(1.82 KB)
📄 _mutex.h(2.63 KB)
📄 _null.h(1.7 KB)
📄 _pctrie.h(1.65 KB)
📄 _pthreadtypes.h(3.51 KB)
📄 _rangeset.h(1.86 KB)
📄 _rmlock.h(2.59 KB)
📄 _rwlock.h(2.39 KB)
📄 _semaphore.h(2.05 KB)
📄 _seqc.h(160 B)
📄 _sigset.h(2.46 KB)
📄 _smr.h(1.94 KB)
📄 _sockaddr_storage.h(2.37 KB)
📄 _stack.h(1.53 KB)
📄 _stdarg.h(2.15 KB)
📄 _stdint.h(2.6 KB)
📄 _sx.h(1.73 KB)
📄 _task.h(2.62 KB)
📄 _termios.h(7.64 KB)
📄 _timespec.h(2 KB)
📄 _timeval.h(1.88 KB)
📄 _types.h(5.66 KB)
📄 _ucontext.h(2.08 KB)
📄 _uio.h(1.99 KB)
📄 _umtx.h(2.5 KB)
📄 _unrhdr.h(1.92 KB)
📄 _winsize.h(2.14 KB)
📄 aac_ioctl.h(7.56 KB)
📄 abi_compat.h(2.42 KB)
📄 acct.h(4.95 KB)
📄 acl.h(14.62 KB)
📄 agpio.h(5.78 KB)
📄 aio.h(7.69 KB)
📄 alq.h(4.5 KB)
📄 apm.h(88 B)
📄 arb.h(28.88 KB)
📄 assym.h(2.7 KB)
📄 ata.h(45.35 KB)
📄 atomic_common.h(3.26 KB)
📄 auxv.h(1.58 KB)
📄 backlight.h(2.02 KB)
📄 bio.h(6.77 KB)
📄 bitset.h(8.53 KB)
📄 bitstring.h(12.16 KB)
📄 blist.h(3.74 KB)
📄 blockcount.h(3.03 KB)
📄 boot.h(1.8 KB)
📄 buf.h(20.73 KB)
📄 buf_ring.h(10.6 KB)
📄 bufobj.h(5.03 KB)
📄 bus.h(38.2 KB)
📄 bus_dma.h(13.68 KB)
📄 bus_dma_internal.h(2.42 KB)
📄 busdma_bufalloc.h(4.7 KB)
📄 callout.h(6.62 KB)
📄 caprights.h(4.17 KB)
📄 capsicum.h(17.54 KB)
📄 cdefs.h(27.79 KB)
📄 cdio.h(7.09 KB)
📄 cdrio.h(4.88 KB)
📄 cfictl.h(2.21 KB)
📄 chio.h(9.53 KB)
📄 ck.h(251 B)
📄 clock.h(8.07 KB)
📄 cnv.h(4.25 KB)
📄 compressor.h(2.05 KB)
📄 condvar.h(3.42 KB)
📄 conf.h(12.4 KB)
📄 cons.h(5.22 KB)
📄 consio.h(14.01 KB)
📄 copyright.h(1.97 KB)
📄 counter.h(3.02 KB)
📄 coverage.h(2.36 KB)
📄 cpu.h(7.02 KB)
📄 cpuctl.h(2.29 KB)
📄 cpuset.h(5.93 KB)
📄 csan.h(1.71 KB)
📄 ctype.h(2.81 KB)
📄 devctl.h(1.76 KB)
📄 devicestat.h(6.97 KB)
📄 devmap.h(4.04 KB)
📄 dirent.h(4.78 KB)
📁 disk
📄 disk.h(6.31 KB)
📄 disk_zone.h(6.52 KB)
📄 disklabel.h(4.39 KB)
📄 diskmbr.h(1.84 KB)
📄 dkstat.h(2.05 KB)
📄 dnv.h(3.39 KB)
📄 domain.h(3.64 KB)
📄 domainset.h(5.05 KB)
📄 dtrace_bsd.h(6.93 KB)
📄 dvdio.h(3.43 KB)
📄 efi.h(6.21 KB)
📄 efiio.h(2.06 KB)
📄 elf.h(1.6 KB)
📄 elf32.h(7.46 KB)
📄 elf64.h(7.79 KB)
📄 elf_common.h(59.51 KB)
📄 elf_generic.h(2.83 KB)
📄 endian.h(4.98 KB)
📄 epoch.h(4.01 KB)
📄 errno.h(8.29 KB)
📄 eui64.h(2.05 KB)
📄 event.h(12.61 KB)
📄 eventfd.h(1.86 KB)
📄 eventhandler.h(11.8 KB)
📄 eventvar.h(2.46 KB)
📄 exec.h(4.56 KB)
📄 extattr.h(4.08 KB)
📄 fail.h(13.1 KB)
📄 fbio.h(19.95 KB)
📄 fcntl.h(12.02 KB)
📄 fdcio.h(7.6 KB)
📄 file.h(14.06 KB)
📄 filedesc.h(12.13 KB)
📄 filio.h(3.67 KB)
📄 firmware.h(3.11 KB)
📄 fnv_hash.h(1.41 KB)
📄 font.h(3.85 KB)
📄 gmon.h(7.16 KB)
📄 gpio.h(9.85 KB)
📄 gpt.h(1.51 KB)
📄 gsb_crc32.h(998 B)
📄 gtaskqueue.h(4.21 KB)
📄 hash.h(3.55 KB)
📄 hhook.h(5.86 KB)
📄 iconv.h(8.22 KB)
📄 imgact.h(5.22 KB)
📄 imgact_aout.h(5.65 KB)
📄 imgact_binmisc.h(6.95 KB)
📄 imgact_elf.h(4.13 KB)
📄 interrupt.h(8.07 KB)
📄 intr.h(5.36 KB)
📄 ioccom.h(3.82 KB)
📄 ioctl.h(2.24 KB)
📄 ioctl_compat.h(6.42 KB)
📄 iov.h(11.67 KB)
📄 iov_schema.h(2.33 KB)
📄 ipc.h(4.93 KB)
📄 ipmi.h(5.4 KB)
📄 jail.h(14.98 KB)
📄 joystick.h(2.12 KB)
📄 kbio.h(7.81 KB)
📄 kcov.h(2.36 KB)
📄 kdb.h(5.04 KB)
📄 kenv.h(2.02 KB)
📄 kern_prefetch.h(1.67 KB)
📄 kernel.h(16.18 KB)
📄 kerneldump.h(4.85 KB)
📄 khelp.h(3.08 KB)
📄 kobj.h(6.92 KB)
📄 kpilite.h(2.01 KB)
📄 ksem.h(2.34 KB)
📄 kthread.h(3.04 KB)
📄 ktls.h(6.52 KB)
📄 ktr.h(10.92 KB)
📄 ktr_class.h(3.8 KB)
📄 ktrace.h(8.13 KB)
📄 libkern.h(7.74 KB)
📄 limits.h(3.69 KB)
📄 link_aout.h(10.2 KB)
📄 link_elf.h(4.06 KB)
📄 linker.h(11.88 KB)
📄 linker_set.h(3.85 KB)
📄 lock.h(12.24 KB)
📄 lock_profile.h(2.6 KB)
📄 lockf.h(5.55 KB)
📄 lockmgr.h(7 KB)
📄 lockstat.h(5.13 KB)
📄 loginclass.h(2.08 KB)
📄 mac.h(3.96 KB)
📄 malloc.h(11.76 KB)
📄 mbuf.h(50.74 KB)
📄 mchain.h(4.21 KB)
📄 md4.h(1.63 KB)
📄 md5.h(1.81 KB)
📄 mdioctl.h(3.73 KB)
📄 memdesc.h(3.79 KB)
📄 memrange.h(2.36 KB)
📄 mman.h(10.41 KB)
📄 module.h(8.77 KB)
📄 module_khelp.h(3.45 KB)
📄 mount.h(42.05 KB)
📄 mouse.h(12.69 KB)
📄 mpt_ioctl.h(4.27 KB)
📄 mqueue.h(1.86 KB)
📄 msg.h(4.78 KB)
📄 msgbuf.h(3.49 KB)
📄 mtio.h(11.94 KB)
📄 mutex.h(19.18 KB)
📄 namei.h(11.27 KB)
📄 nlist_aout.h(4.23 KB)
📄 nv.h(10.62 KB)
📄 osd.h(4.02 KB)
📄 param.h(12.23 KB)
📄 pciio.h(5.67 KB)
📄 pcpu.h(9.79 KB)
📄 pctrie.h(5.19 KB)
📄 physmem.h(2.92 KB)
📄 pidctrl.h(5.44 KB)
📄 pipe.h(4.63 KB)
📄 pmc.h(37.29 KB)
📄 pmckern.h(8.01 KB)
📄 pmclog.h(9.23 KB)
📄 poll.h(4.03 KB)
📄 posix4.h(3.71 KB)
📄 power.h(2.34 KB)
📄 priority.h(4.39 KB)
📄 priv.h(19.73 KB)
📄 prng.h(354 B)
📄 proc.h(50.73 KB)
📄 procctl.h(4.89 KB)
📄 procdesc.h(4.46 KB)
📄 procfs.h(4.2 KB)
📄 protosw.h(14.56 KB)
📄 ptio.h(1.57 KB)
📄 ptrace.h(8.61 KB)
📄 qmath.h(22.07 KB)
📄 queue.h(28.61 KB)
📄 racct.h(7.48 KB)
📄 random.h(5.41 KB)
📄 rangelock.h(3.86 KB)
📄 rangeset.h(2.96 KB)
📄 rctl.h(5.91 KB)
📄 reboot.h(3.41 KB)
📄 refcount.h(5.72 KB)
📄 regression.h(1.62 KB)
📄 resource.h(5.32 KB)
📄 resourcevar.h(6.33 KB)
📄 rman.h(6.41 KB)
📄 rmlock.h(5.56 KB)
📄 rtprio.h(3.08 KB)
📄 runq.h(2.54 KB)
📄 rwlock.h(10.61 KB)
📄 sbuf.h(4.68 KB)
📄 sched.h(9.06 KB)
📄 sdt.h(17.89 KB)
📄 select.h(3.5 KB)
📄 selinfo.h(2.39 KB)
📄 sem.h(4.31 KB)
📄 sema.h(2.61 KB)
📄 seqc.h(3.26 KB)
📄 serial.h(3.49 KB)
📄 sf_buf.h(5.87 KB)
📄 sglist.h(3.89 KB)
📄 shm.h(5.69 KB)
📄 sigio.h(2.83 KB)
📄 signal.h(15.83 KB)
📄 signalvar.h(12.95 KB)
📄 sleepqueue.h(5.61 KB)
📄 slicer.h(2.19 KB)
📄 smp.h(8.88 KB)
📄 smr.h(7.64 KB)
📄 smr_types.h(4.87 KB)
📄 snoop.h(1014 B)
📄 sockbuf.h(9.9 KB)
📄 socket.h(23.43 KB)
📄 socketvar.h(18.75 KB)
📄 sockio.h(7.97 KB)
📄 sockopt.h(2.98 KB)
📄 soundcard.h(69.38 KB)
📄 specialfd.h(1.56 KB)
📄 spigenio.h(2.28 KB)
📄 stack.h(2.65 KB)
📄 stat.h(13.44 KB)
📄 stats.h(34.73 KB)
📄 statvfs.h(3.08 KB)
📄 stdatomic.h(13.94 KB)
📄 stddef.h(1.7 KB)
📄 stdint.h(2.63 KB)
📄 sx.h(11.04 KB)
📄 syscall.h(13.99 KB)
📄 syscall.mk(6.56 KB)
📄 syscallsubr.h(16.94 KB)
📄 sysctl.h(47.96 KB)
📄 sysent.h(10.82 KB)
📄 syslimits.h(3.14 KB)
📄 syslog.h(7.25 KB)
📄 sysproto.h(153.38 KB)
📄 systm.h(21.97 KB)
📄 taskqueue.h(7.65 KB)
📄 terminal.h(8.25 KB)
📄 termios.h(151 B)
📄 thr.h(2.87 KB)
📄 tiio.h(12.62 KB)
📄 tim_filter.h(4.61 KB)
📄 time.h(16.87 KB)
📄 timeb.h(2.59 KB)
📄 timeet.h(3.65 KB)
📄 timeffc.h(11.94 KB)
📄 timepps.h(6.48 KB)
📄 timers.h(3.56 KB)
📄 times.h(2.46 KB)
📄 timespec.h(2.4 KB)
📄 timetc.h(3.16 KB)
📄 timex.h(6.61 KB)
📄 tree.h(27.93 KB)
📄 tslog.h(2.3 KB)
📄 tty.h(8.98 KB)
📄 ttycom.h(6.48 KB)
📄 ttydefaults.h(3.92 KB)
📄 ttydevsw.h(5.28 KB)
📄 ttydisc.h(2.93 KB)
📄 ttyhook.h(3.98 KB)
📄 ttyqueue.h(5.26 KB)
📄 turnstile.h(4.83 KB)
📄 types.h(11.64 KB)
📄 ucontext.h(2.91 KB)
📄 ucred.h(5.4 KB)
📄 uio.h(4.15 KB)
📄 umtx.h(5.94 KB)
📄 un.h(2.96 KB)
📄 unistd.h(7.34 KB)
📄 unpcb.h(6.77 KB)
📄 user.h(21.58 KB)
📄 utsname.h(2.47 KB)
📄 uuid.h(3.17 KB)
📄 vdso.h(4.26 KB)
📄 vmem.h(4.91 KB)
📄 vmmeter.h(7.72 KB)
📄 vnode.h(40.87 KB)
📄 vtoc.h(89 B)
📄 wait.h(6.11 KB)
📄 watchdog.h(4.22 KB)

Editing: malloc.h

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1987, 1993
 *	The Regents of the University of California.
 * Copyright (c) 2005, 2009 Robert N. M. Watson
 * All rights reserved.
 *
 * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 *
 *	@(#)malloc.h	8.5 (Berkeley) 5/3/95
 * $FreeBSD$
 */

#ifndef _SYS_MALLOC_H_
#define	_SYS_MALLOC_H_

#ifndef _STANDALONE
#include <sys/param.h>
#ifdef _KERNEL
#include <sys/systm.h>
#endif
#include <sys/queue.h>
#include <sys/_lock.h>
#include <sys/_mutex.h>
#include <machine/_limits.h>

#define	MINALLOCSIZE	UMA_SMALLEST_UNIT

/*
 * Flags to memory allocation functions.
 */
#define	M_NOWAIT	0x0001		/* do not block */
#define	M_WAITOK	0x0002		/* ok to block */
#define	M_ZERO		0x0100		/* bzero the allocation */
#define	M_NOVM		0x0200		/* don't ask VM for pages */
#define	M_USE_RESERVE	0x0400		/* can alloc out of reserve memory */
#define	M_NODUMP	0x0800		/* don't dump pages in this allocation */
#define	M_FIRSTFIT	0x1000		/* only for vmem, fast fit */
#define	M_BESTFIT	0x2000		/* only for vmem, low fragmentation */
#define	M_EXEC		0x4000		/* allocate executable space */
#define	M_NEXTFIT	0x8000		/* only for vmem, follow cursor */

#define	M_VERSION	2020110501

/*
 * Two malloc type structures are present: malloc_type, which is used by a
 * type owner to declare the type, and malloc_type_internal, which holds
 * malloc-owned statistics and other ABI-sensitive fields, such as the set of
 * malloc statistics indexed by the compile-time MAXCPU constant.
 * Applications should avoid introducing dependence on the allocator private
 * data layout and size.
 *
 * The malloc_type ks_next field is protected by malloc_mtx.  Other fields in
 * malloc_type are static after initialization so unsynchronized.
 *
 * Statistics in malloc_type_stats are written only when holding a critical
 * section and running on the CPU associated with the index into the stat
 * array, but read lock-free resulting in possible (minor) races, which the
 * monitoring app should take into account.
 */
struct malloc_type_stats {
	uint64_t	mts_memalloced;	/* Bytes allocated on CPU. */
	uint64_t	mts_memfreed;	/* Bytes freed on CPU. */
	uint64_t	mts_numallocs;	/* Number of allocates on CPU. */
	uint64_t	mts_numfrees;	/* number of frees on CPU. */
	uint64_t	mts_size;	/* Bitmask of sizes allocated on CPU. */
	uint64_t	_mts_reserved1;	/* Reserved field. */
	uint64_t	_mts_reserved2;	/* Reserved field. */
	uint64_t	_mts_reserved3;	/* Reserved field. */
};

_Static_assert(sizeof(struct malloc_type_stats) == 64,
    "allocations come from pcpu_zone_64");

/*
 * Index definitions for the mti_probes[] array.
 */
#define DTMALLOC_PROBE_MALLOC		0
#define DTMALLOC_PROBE_FREE		1
#define DTMALLOC_PROBE_MAX		2

struct malloc_type_internal {
	uint32_t	mti_probes[DTMALLOC_PROBE_MAX];
					/* DTrace probe ID array. */
	u_char		mti_zone;
	struct malloc_type_stats	*mti_stats;
	u_long		mti_spare[8];
};

/*
 * Public data structure describing a malloc type.
 */
struct malloc_type {
	struct malloc_type *ks_next;	/* Next in global chain. */
	u_long		 ks_version;	/* Detect programmer error. */
	const char	*ks_shortdesc;	/* Printable type name. */
	struct malloc_type_internal ks_mti;
};

/*
 * Statistics structure headers for user space.  The kern.malloc sysctl
 * exposes a structure stream consisting of a stream header, then a series of
 * malloc type headers and statistics structures (quantity maxcpus).  For
 * convenience, the kernel will provide the current value of maxcpus at the
 * head of the stream.
 */
#define	MALLOC_TYPE_STREAM_VERSION	0x00000001
struct malloc_type_stream_header {
	uint32_t	mtsh_version;	/* Stream format version. */
	uint32_t	mtsh_maxcpus;	/* Value of MAXCPU for stream. */
	uint32_t	mtsh_count;	/* Number of records. */
	uint32_t	_mtsh_pad;	/* Pad/reserved field. */
};

#define	MALLOC_MAX_NAME	32
struct malloc_type_header {
	char				mth_name[MALLOC_MAX_NAME];
};

#ifdef _KERNEL
#define	MALLOC_DEFINE(type, shortdesc, longdesc)			\
	struct malloc_type type[1] = {					\
		{							\
			.ks_next = NULL,				\
			.ks_version = M_VERSION,			\
			.ks_shortdesc = shortdesc,			\
		}							\
	};								\
	SYSINIT(type##_init, SI_SUB_KMEM, SI_ORDER_THIRD, malloc_init,	\
	    type);							\
	SYSUNINIT(type##_uninit, SI_SUB_KMEM, SI_ORDER_ANY,		\
	    malloc_uninit, type)

#define	MALLOC_DECLARE(type) \
	extern struct malloc_type type[1]

MALLOC_DECLARE(M_CACHE);
MALLOC_DECLARE(M_DEVBUF);
MALLOC_DECLARE(M_TEMP);

/*
 * XXX this should be declared in <sys/uio.h>, but that tends to fail
 * because <sys/uio.h> is included in a header before the source file
 * has a chance to include <sys/malloc.h> to get MALLOC_DECLARE() defined.
 */
MALLOC_DECLARE(M_IOV);

struct domainset;
extern struct mtx malloc_mtx;

/*
 * Function type used when iterating over the list of malloc types.
 */
typedef void malloc_type_list_func_t(struct malloc_type *, void *);

void	contigfree(void *addr, unsigned long size, struct malloc_type *type);
void	*contigmalloc(unsigned long size, struct malloc_type *type, int flags,
	    vm_paddr_t low, vm_paddr_t high, unsigned long alignment,
	    vm_paddr_t boundary) __malloc_like __result_use_check
	    __alloc_size(1) __alloc_align(6);
void	*contigmalloc_domainset(unsigned long size, struct malloc_type *type,
	    struct domainset *ds, int flags, vm_paddr_t low, vm_paddr_t high,
	    unsigned long alignment, vm_paddr_t boundary)
	    __malloc_like __result_use_check __alloc_size(1) __alloc_align(7);
void	free(void *addr, struct malloc_type *type);
void	zfree(void *addr, struct malloc_type *type);
void	*malloc(size_t size, struct malloc_type *type, int flags) __malloc_like
	    __result_use_check __alloc_size(1);
/*
 * Try to optimize malloc(..., ..., M_ZERO) allocations by doing zeroing in
 * place if the size is known at compilation time.
 *
 * Passing the flag down requires malloc to blindly zero the entire object.
 * In practice a lot of the zeroing can be avoided if most of the object
 * gets explicitly initialized after the allocation. Letting the compiler
 * zero in place gives it the opportunity to take advantage of this state.
 *
 * Note that the operation is only applicable if both flags and size are
 * known at compilation time. If M_ZERO is passed but M_WAITOK is not, the
 * allocation can fail and a NULL check is needed. However, if M_WAITOK is
 * passed we know the allocation must succeed and the check can be elided.
 *
 *	_malloc_item = malloc(_size, type, (flags) &~ M_ZERO);
 *	if (((flags) & M_WAITOK) != 0 || _malloc_item != NULL)
 *		bzero(_malloc_item, _size);
 *
 * If the flag is set, the compiler knows the left side is always true,
 * therefore the entire statement is true and the callsite is:
 *
 *	_malloc_item = malloc(_size, type, (flags) &~ M_ZERO);
 *	bzero(_malloc_item, _size);
 *
 * If the flag is not set, the compiler knows the left size is always false
 * and the NULL check is needed, therefore the callsite is:
 *
 * 	_malloc_item = malloc(_size, type, (flags) &~ M_ZERO);
 *	if (_malloc_item != NULL)
 *		bzero(_malloc_item, _size);			
 *
 * The implementation is a macro because of what appears to be a clang 6 bug:
 * an inline function variant ended up being compiled to a mere malloc call
 * regardless of argument. gcc generates expected code (like the above).
 */
#define	malloc(size, type, flags) ({					\
	void *_malloc_item;						\
	size_t _size = (size);						\
	if (__builtin_constant_p(size) && __builtin_constant_p(flags) &&\
	    ((flags) & M_ZERO) != 0) {					\
		_malloc_item = malloc(_size, type, (flags) &~ M_ZERO);	\
		if (((flags) & M_WAITOK) != 0 ||			\
		    __predict_true(_malloc_item != NULL))		\
			bzero(_malloc_item, _size);			\
	} else {							\
		_malloc_item = malloc(_size, type, flags);		\
	}								\
	_malloc_item;							\
})

void	*malloc_domainset(size_t size, struct malloc_type *type,
	    struct domainset *ds, int flags) __malloc_like __result_use_check
	    __alloc_size(1);
void	*mallocarray(size_t nmemb, size_t size, struct malloc_type *type,
	    int flags) __malloc_like __result_use_check
	    __alloc_size2(1, 2);
void	*malloc_exec(size_t size, struct malloc_type *type, int flags) __malloc_like
	    __result_use_check __alloc_size(1);
void	*malloc_domainset_exec(size_t size, struct malloc_type *type,
	    struct domainset *ds, int flags) __malloc_like __result_use_check
	    __alloc_size(1);
void	malloc_init(void *);
void	malloc_type_allocated(struct malloc_type *type, unsigned long size);
void	malloc_type_freed(struct malloc_type *type, unsigned long size);
void	malloc_type_list(malloc_type_list_func_t *, void *);
void	malloc_uninit(void *);
size_t	malloc_size(size_t);
size_t	malloc_usable_size(const void *);
void	*realloc(void *addr, size_t size, struct malloc_type *type, int flags)
	    __result_use_check __alloc_size(2);
void	*reallocf(void *addr, size_t size, struct malloc_type *type, int flags)
	    __result_use_check __alloc_size(2);
void	*malloc_domainset_aligned(size_t size, size_t align,
	    struct malloc_type *mtp, struct domainset *ds, int flags)
	    __malloc_like __result_use_check __alloc_size(1);

struct malloc_type *malloc_desc2type(const char *desc);

/*
 * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
 * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
 */
#define MUL_NO_OVERFLOW		(1UL << (sizeof(size_t) * 8 / 2))
static inline bool
WOULD_OVERFLOW(size_t nmemb, size_t size)
{

return ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
	    nmemb > 0 && __SIZE_T_MAX / nmemb < size);
}
#undef MUL_NO_OVERFLOW
#endif /* _KERNEL */

#else
/*
 * The native stand malloc / free interface we're mapping to
 */
extern void Free(void *p, const char *file, int line);
extern void *Malloc(size_t bytes, const char *file, int line);

/*
 * Minimal standalone malloc implementation / environment. None of the
 * flags mean anything and there's no need declare malloc types.
 * Define the simple alloc / free routines in terms of Malloc and
 * Free. None of the kernel features that this stuff disables are needed.
 *
 * XXX we are setting ourselves up for a potential crash if we can't allocate
 * memory for a M_WAITOK call.
 */
#define M_WAITOK 0
#define M_ZERO 0
#define M_NOWAIT 0
#define MALLOC_DECLARE(x)

#define kmem_zalloc(size, flags) Malloc((size), __FILE__, __LINE__)
#define kmem_free(p, size) Free(p, __FILE__, __LINE__)

/*
 * ZFS mem.h define that's the OpenZFS porting layer way of saying
 * M_WAITOK. Given the above, it will also be a nop.
 */
#define KM_SLEEP M_WAITOK
#endif /* _STANDALONE */
#endif /* !_SYS_MALLOC_H_ */

003 File Manager

Editing: malloc.h

Upload File

Create Folder