Module mm

Available on crate feature dep_rustix only.

Memory map operations.

Structs

MapFlags

MAP_* flags for use with mmap.

MlockAllFlags

MCL_* flags for use with mlockall.

MlockFlags

MLOCK_* flags for use with mlock_with.

MprotectFlags

PROT_* flags for use with mprotect.

MremapFlags

MREMAP_* flags for use with mremap.

MsyncFlags

MS_* flags for use with msync.

ProtFlags

PROT_* flags for use with mmap.

UserfaultfdFlags

O_* flags for use with userfaultfd.

Enums

Advice

POSIX_MADV_* constants for use with madvise.

Functions

madvise^⚠

posix_madvise(addr, len, advice)—Declares an expected access pattern for a memory-mapped file.

mlock^⚠

mlock(ptr, len)—Lock memory into RAM.

mlock_with^⚠

mlock2(ptr, len, flags)—Lock memory into RAM, with flags.

mlockall

Locks all pages mapped into the address space of the calling process.

mmap^⚠

mmap(ptr, len, prot, flags, fd, offset)—Create a file-backed memory mapping.

mmap_anonymous^⚠

mmap(ptr, len, prot, MAP_ANONYMOUS | flags, -1, 0)—Create an anonymous memory mapping.

mprotect^⚠

mprotect(ptr, len, flags)—Change the protection flags of a region of memory.

mremap^⚠

mremap(old_address, old_size, new_size, flags)—Resize, modify, and/or move a memory mapping.

mremap_fixed^⚠

mremap(old_address, old_size, new_size, MREMAP_FIXED | flags)—Resize, modify, and/or move a memory mapping to a specific address.

msync^⚠

msync(addr, len, flags)—Synchronizes a memory-mapping with its backing storage.

munlock^⚠

munlock(ptr, len)—Unlock memory.

munlockall

Unlocks all pages mapped into the address space of the calling process.

munmap^⚠

munmap(ptr, len)—Remove a memory mapping.

userfaultfd^⚠

userfaultfd(flags)