Memory management 1,342 crates

once_cellSingle assignment cells and lazy values.1,076,578,011MIT OR Apache-2.0Memory managementRust patterns lazy_staticA macro for declaring lazily evaluated statics in Rust.866,141,716MIT OR Apache-2.0Memory managementNo standard library slabPre-allocated storage for a uniform data type782,808,612MITData structuresMemory management zeroizeSecurely clear secrets from memory with a simple trait built on stable Rust primitives which guarantee memory is zeroed using…578,456,418Apache-2.0 OR MITCryptographyMemory management crossbeam-epochEpoch-based garbage collection562,896,962MIT OR Apache-2.0ConcurrencyMemory management stable_deref_traitAn unsafe marker trait for types like Box and Rc that dereference to a stable address even when moved, and hence can be used with…538,642,840MIT OR Apache-2.0Memory managementNo standard library bumpaloA fast bump allocation arena for Rust.486,596,584MIT OR Apache-2.0Memory managementNo standard library sharded-slabA lock-free concurrent slab.463,212,870MITConcurrencyData structures yokeAbstraction allowing borrowed data to be carried along with the backing data it borrows from459,064,653Unicode-3.0CachingData structures yoke-deriveCustom derive for the yoke crate454,633,429Unicode-3.0CachingData structures zerovecZero-copy vector backed by a byte array450,648,481Unicode-3.0CachingData structures zerovec-deriveCustom derive for the zerovec crate445,794,098Unicode-3.0CachingData structures zerofrom-deriveCustom derive for the zerofrom crate438,160,016Unicode-3.0CachingData structures arc-swapAtomically swappable Arc271,936,156MIT OR Apache-2.0Data structuresMemory management zeroize_deriveCustom derive support for zeroize211,884,636Apache-2.0 OR MITCryptographyMemory management secrecyWrapper types and traits for secret management which help ensure they aren't accidentally copied, logged, or otherwise…135,115,357Apache-2.0 OR MITCryptographyMemory management compact_strA memory efficient string type that transparently stores strings on the stack, when possible122,951,713MITEncodingMemory management crossbeamTools for concurrent programming121,942,065MIT OR Apache-2.0ConcurrencyData structures id-arenaA simple, id-based arena.101,997,736MIT/Apache-2.0Memory managementNo standard library slotmapSlotmap data structure88,263,233ZlibCachingData structures flatbuffersOfficial FlatBuffers Rust runtime library.87,208,649Apache-2.0Data structuresEncoding tikv-jemallocatorA Rust allocator backed by jemalloc82,555,491MIT/Apache-2.0API bindingsMemory management sddScalable lock-free delayed memory reclaimer76,211,003Apache-2.0ConcurrencyData structures typed-arenaThe arena, a fast but limited type of allocator71,224,116MITMemory managementNo standard library beefMore compact Cow63,407,936MIT OR Apache-2.0Memory managementNo standard library tikv-jemalloc-ctlA safe wrapper over jemalloc's control and introspection APIs54,674,103MIT/Apache-2.0API bindingsDevelopment tools self_cellSafe-to-use proc-macro-free self-referential structs in stable Rust.52,164,547Apache-2.0 OR GPL-2.0-onlyMemory managementRust patterns arraydequeA ring buffer with a fixed capacity, which can be stored on the stack.51,162,307MIT/Apache-2.0Data structuresMemory management libmimalloc-sysSys crate wrapping the mimalloc allocator44,898,451MITAPI bindingsMemory management mimallocPerformance and security oriented drop-in allocator44,895,858MITAPI bindingsMemory management lockfree-object-poolA thread-safe object pool collection with automatic return and attach/detach semantics.28,579,657BSL-1.0ConcurrencyData structures jemallocatorA Rust allocator backed by jemalloc26,575,552MIT/Apache-2.0API bindingsMemory management alignedA newtype with alignment of at least `A` bytes26,388,198MIT OR Apache-2.0Embedded developmentMemory management gpu-allocImplementation agnostic memory allocator for Vulkan like APIs21,690,235MIT OR Apache-2.0Game developmentGraphics gpu-alloc-typesCore types of gpu-alloc crate20,983,058MIT OR Apache-2.0Game developmentGraphics archeryAbstract over the atomicity of reference-counting pointers19,063,530MITConcurrencyMemory management arcstrA better reference-counted string type, with zero-cost (allocation-free) support for string literals, and reference counted…18,780,699Apache-2.0 OR MIT OR ZlibConcurrencyData structures get-size-deriveDerives the GetSize trait.16,899,573MITCachingMemory management get-sizeDetermine the size in bytes an object occupies inside RAM.16,704,694MITCachingMemory management discardDiscard trait which allows for intentionally leaking memory15,462,671MITMemory management planusPlanus is an alternative compiler for flatbuffers, an efficient cross platform serialization library.15,152,154MIT/Apache-2.0Data structuresEncoding internmentEasy interning of data13,556,926MIT OR Apache-2.0CachingConcurrency range-allocGeneric range allocator13,320,754MIT OR Apache-2.0Memory management jemalloc-ctlA safe wrapper over jemalloc's control and introspection APIs13,306,395MIT/Apache-2.0API bindingsDevelopment tools static_initSafe mutable static and non const static initialization, and code execution at program startup/exit.11,988,265MIT OR Apache-2.0Memory managementNo standard library presserA crate to help you copy things into raw buffers without invoking spooky action at a distance (undefined behavior).11,640,928MIT OR Apache-2.0GamesGraphics mutate_onceInterior mutability, write-once and borrowable as plain &T11,595,308BSD-2-ClauseCachingMemory management seizeFast, efficient, and predictable memory reclamation for concurrent data structures.10,455,537MITConcurrencyMemory management jemalloc_pprofConvert jemalloc heap profiles to pprof to understand memory usage, fix memory leaks, and fix OOM Kills.10,222,759Apache-2.0Development toolsDevelopment tools::Debugging calendrical_calculationsCalendrical calculations in Rust9,710,185Apache-2.0CachingData structures uninitA collection of tools for a safer usage of uninitialized memory9,632,274Zlib OR MIT OR Apache-2.0Memory managementRust patterns snmalloc-sysrust raw bindings of snmalloc.9,503,527MITAPI bindingsMemory management memory_unitsSafe conversions between units of memory9,489,397MPL-2.0Memory managementNo standard library snmalloc-rsrust bindings of snmalloc.9,445,158MITAPI bindingsMemory management generational-arenaA safe arena allocator that supports deletion without suffering from the ABA problem by using generational indices.9,300,331MPL-2.0Data structuresMemory management async-once-cellAsync single assignment cells and lazy values.8,172,259MIT OR Apache-2.0Memory managementRust patterns cudarcSafe and minimal CUDA bindings6,291,735MIT OR Apache-2.0API bindingsHardware support vm-memorySafe abstractions for accessing the VM physical memory6,180,461Apache-2.0 OR BSD-3-ClauseMemory management strckChecked owned and borrowed strings5,492,713MITMemory managementRust patterns d3d12Low level D3D12 API wrapper5,390,781MIT OR Apache-2.0API bindingsGraphics wee_allocwee_alloc: The Wasm-Enabled, Elfin Allocator5,258,753MPL-2.0Embedded developmentMemory management deepsizeA crate for measuring the total size of object on the stack and heap4,700,924MITDevelopment tools::ProfilingMemory management deepsize_deriveA crate for measuring the total size of object on the stack and heap4,696,242MITDevelopment tools::ProfilingMemory management shared_memoryA user friendly crate that allows you to share memory between processes4,691,153MIT OR Apache-2.0AsynchronousConcurrency aligned-arrayA newtype with alignment of at least `A` bytes4,638,151MIT OR Apache-2.0Embedded developmentMemory management get-size2Determine the size in bytes an object occupies inside RAM.4,226,271MIT OR Apache-2.0CachingMemory management flexbuffersOfficial FlexBuffers Rust runtime library.4,050,162Apache-2.0Data structuresEncoding get-size-derive2Derives the GetSize trait.3,964,265MIT OR Apache-2.0CachingMemory management safe-transmuteA safeguarded transmute() for Rust3,874,862MITMemory managementNo standard library aliasable_deref_traitMarker trait for types that deref to an address that is aliasable when coerced to a raw pointer3,838,090MITMemory managementNo standard library micromapThe fastest alternative to HashMap, for maps smaller than 20 keys3,804,165MITData structuresMemory management memuseTraits for measuring dynamic memory usage of types3,799,498MIT/Apache-2.0Development tools::ProfilingMemory management vec-arenaA simple object arena3,759,022Apache-2.0 OR MITMemory management fallible_collectionsa crate which adds fallible allocation api to std collections3,756,223MIT OR Apache-2.0Memory managementRust patterns deferUtility to defer excecution of code, inspired by go's defer statement.3,704,734MIT/Apache-2.0Memory managementNo standard library token-cellA more convenient GhostCell3,510,304EPL-2.0 OR Apache-2.0Memory managementNo standard library la-arenaSimple index-based arena without deletion.3,485,489MIT OR Apache-2.0Data structuresMemory management include-flateA variant of include_bytes!/include_str! with compile-time deflation and runtime lazy inflation3,402,512Apache-2.0CompressionMemory management r-efi-allocUEFI Memory Allocator Integration3,161,772MIT OR Apache-2.0 OR LGPL-2.1-or-laterEmbedded developmentHardware support foundationsA Rust service foundations library.3,136,988BSD-3-ClauseConfigurationDevelopment tools object-poolA thread-safe object pool with automatic return and attach/detach semantics3,033,536MIT/Apache-2.0ConcurrencyData structures mboxmalloc-based box. Supports wrapping pointers or null-terminated strings returned from malloc as a Rust type, which will be…2,927,297MITAPI bindingsDevelopment tools::FFI memsecRust implementation `libsodium/utils`.2,421,898MITMemory managementNo standard library associative-cacheA generic N-way associative cache with fixed-size capacity and random or least recently used (LRU) replacement.2,309,166MIT OR Apache-2.0CachingData structures ocaml-boxroot-sysBoxroot for OCaml: fast movable GC roots (C API)2,308,167MITMemory management owned-allocA crate to help reducing manual memory management errors.2,099,509MITData structuresMemory management pin-weakSmall wrapper around an equivalent of Pin<Weak<T>>2,016,876MITMemory management rlsfReal-time dynamic memory allocator based on the TLSF algorithm1,691,190MIT/Apache-2.0Embedded developmentMemory management conquer-onceSynchronization primitives for lazy and one-time initialization1,627,778MIT/Apache-2.0ConcurrencyMemory management shuffling-allocatorA shuffling allocator, randomizing heap object locations; useful for avoiding accidental cache locality during benchmarking,…1,532,025MPL-2.0Development tools::ProfilingMemory management alloc-traitsTraits to replace or supplement the alloc module in no_std1,481,354MITEmbedded developmentMemory management mmap-syncA Rust package allowing sharing of data between processes in a wait-free and zero-copy fashion from mapped memory.1,461,159Apache-2.0ConcurrencyData structures without-allocReplacements for `Box`, `Rc`, `Vec`, .. without `alloc`1,429,269MITEmbedded developmentMemory management strck_identChecked owned and borrowed Unicode-based identifiers1,416,170MITMemory managementRust patterns include_bytes_alignedA simple macro that embeds the bytes of an external file into the executable and guarantees that they are aligned.1,296,418MITMemory management reference-counted-singletonReference-counted singleton whose protected data can be recreated as needed1,284,370MITAlgorithmsConcurrency flexstrA flexible, simple to use, clone-efficient string type for Rust1,253,278MIT OR Apache-2.0Data structuresMemory management hipstrYet another string for Rust: zero-cost borrow and slicing, inline representation for small strings, (atomic) reference…1,171,112MIT OR Apache-2.0Data structuresMemory management ra_ap_la-arenaSimple index-based arena without deletion.1,168,935MIT OR Apache-2.0Data structuresMemory management talcA fast and flexible allocator for no_std and WebAssembly1,145,591MITEmbedded developmentMemory management tiny-fnType erased closures on stack1,140,080MIT OR Apache-2.0Memory managementNo standard library disposeA simple wrapper for values that must be consumed on drop.1,060,375MIT OR Apache-2.0Memory managementRust patterns dispose-deriveDerive macro for the dispose crate.1,059,877MIT OR Apache-2.0Memory managementRust patterns bbqueueA SPSC, lockless, no_std, thread safe, queue, based on BipBuffers1,034,702MIT OR Apache-2.0Embedded developmentMemory management slabbinAn efficient slab allocator with stable addresses951,452MIT OR Apache-2.0Memory managementNo standard library static-allocA bump allocator on static memory for the alloc-traits crate935,231MIT OR Apache-2.0 OR ZlibEmbedded developmentMemory management filebufferFast and simple file reading923,681Apache-2.0AsynchronousFilesystem stable-vecA Vec-like collection which guarantees stable indices and features O(1) element deletion (semantically similar to…907,963MIT/Apache-2.0Data structuresMemory management refpoolEfficient memory pool with reference counting895,262MPL-2.0+Memory management jrsonnet-gcmoduleCyclic garbage collection inspired by CPython's gc implementation.877,513MITMemory management bufsizebytes::BufMut implementation to count buffer size877,389MIT OR Apache-2.0Memory managementNetwork programming esp-allocA heap allocator for Espressif devices785,479MIT OR Apache-2.0Embedded developmentMemory management size-ofA crate for measuring the total memory usage of an object730,598MIT OR Apache-2.0Development toolsDevelopment tools::Debugging peak_allocAn allocator to keep track of (the max) allocated memory728,005MITMemory management stacksafe-macroProcedural macro implementation for the stacksafe crate.689,438Apache-2.0Memory managementRust patterns stacksafePrevent stack overflow in deeply recursive functions with automatic stack management.689,179Apache-2.0Memory managementRust patterns thin-dstThin pointers to inline-slice dynamically sized types686,918MIT OR Apache-2.0Data structuresMemory management concreadConcurrently Readable Data-Structures for Rust681,539MPL-2.0CachingConcurrency mallocedA malloc-ed box pointer type.648,395MIT OR Apache-2.0API bindingsMemory management binary-layoutThe binary-layout library allows type-safe, inplace, zero-copy access to structured binary data. You define a custom data layout…604,283MIT OR Apache-2.0Data structuresEncoding reusable-box-futureA reusable `Pin<Box<dyn Future<Output = T> + Send>>`590,346MITAsynchronousMemory management tor-memquotaMemory use tracking and quota utilities, used by Tor software562,293MIT OR Apache-2.0Memory management gpu-alloc-ash`ash` backend for `gpu-alloc`557,935MIT OR Apache-2.0Game developmentGraphics mimalloc-safePerformance and security oriented drop-in allocator525,295MITAPI bindingsMemory management libmimalloc-sys2Sys crate wrapping the mimalloc allocator519,824MITAPI bindingsMemory management rpmalloc-sysUnsafe FFI bindings to rpmalloc C library494,869MIT OR Apache-2.0External FFI bindingsMemory management rpmallocCross-platform global memory allocator using rpmalloc484,293MIT OR Apache-2.0API bindingsMemory management primordialLow-level CPU primitives470,241Apache-2.0Hardware supportMemory management handyA library providing handles and handlemaps469,605Apache-2.0 / MITData structuresMemory management databakeTrait that lets structs represent themselves as (const) Rust expressions456,056Unicode-3.0Development tools::Build UtilsDevelopment tools::Procedural macro helpers databake-deriveCustom derive for the databake crate450,106Unicode-3.0Development tools::Build UtilsDevelopment tools::Procedural macro helpers atomic-poolStatically allocated pool providing a std-like Box.440,032MIT OR Apache-2.0ConcurrencyEmbedded development checkersA sanity checker for global allocations.436,687MIT OR Apache-2.0Development toolsMemory management bincode_derive-nextProcedural macros for bincode-next: high-performance derive macros for Encode, Decode, ZeroCopy, and more.432,621MIT or Apache-2.0EncodingMemory management checkers-macrosMacros for checkers, a sanity checker for global allocations.421,075MIT/Apache-2.0Development toolsMemory management bounded-staticDefines the ToBoundedStatic and IntoBoundedStatic traits408,972Apache-2.0Data structuresMemory management indexedConvenient allocator for index-linked data structures408,121MITData structuresMemory management qcellStatically-checked alternatives to RefCell and RwLock406,771MIT/Apache-2.0Data structuresMemory management second-stackA fast allocator for short-lived slices and large values.405,116MITMemory management thin-cellA compact, single-threaded smart pointer combining reference counting and interior mutability401,171MITData structuresMemory management colosseumA variety of arena allocators for Rust, including thread-safe arenas.386,000MIT/Apache-2.0ConcurrencyMemory management aarcAn atomically updatable Arc for lock-free concurrency.381,303MITAlgorithmsConcurrency bounded-static-deriveMacro to derive ToBoundedStatic and IntoBoundedStatic traits377,055Apache-2.0Data structuresMemory management hwlocality-sysLow-level bindings for the hwloc hardware locality library355,753MITConcurrencyExternal FFI bindings ref_thread_localA macro for declaring thread-local `static`s like using both of `lazy_static!` and `RefCell`354,513MITMemory managementRust patterns lazy-static-includeThis crate provides `lazy_static_include_bytes` and `lazy_static_include_str` macros to replace `include_bytes` and `include_str`…354,009MITMemory managementRust patterns deepsize_derive2A crate for measuring the total size of object on the stack and heap333,956MITDevelopment tools::ProfilingMemory management deepsize2A crate for measuring the total size of object on the stack and heap333,511MITDevelopment tools::ProfilingMemory management compact_bytesA memory efficient bytes container that transparently stores bytes on the stack, when possible333,037MIT/Apache-2.0EncodingMemory management hwlocalityIdiomatic Rust bindings for the hwloc hardware locality library329,132MITConcurrencyExternal FFI bindings fmmapA flexible and convenient high-level mmap for zero-copy file I/O.321,049MIT OR Apache-2.0AsynchronousFilesystem mappable-rcProvides mappable reference counted types315,651MIT OR Apache-2.0Memory managementNo standard library generic_singletonA library crate allowing for generic singleton patterns309,534MIT OR Apache-2.0CachingConfiguration wdk-allocalloc support for binaries compiled with the Windows Development Kit (WDK)273,093MIT OR Apache-2.0Hardware supportMemory management seckeyUse `memsec` protected secret memory.271,073MITMemory managementNo standard library malignedA memory alignment library265,141MIT OR Apache-2.0Embedded developmentMemory management shared_memory_extendedA user friendly crate that allows you to share memory between processes262,228MIT OR Apache-2.0AsynchronousConcurrency bump-scopeA fast bump allocator that supports allocation scopes / checkpoints. Aka an arena for values of arbitrary types.261,815MIT OR Apache-2.0Memory managementNo standard library typed-arena-nomutThe arena, a fast but limited type of allocator261,696MITMemory managementNo standard library bumpalo-herdSupport for bumpalo in scoped threads & rayon247,115MIT OR Apache-2.0Memory managementRust patterns rent_to_ownA wrapper type for optionally giving up ownership of the underlying value.238,696Apache-2.0/MITMemory managementRust patterns fast-smrToward fast, wait-free, portable, and robust memory reclamation.233,238MITAlgorithmsConcurrency tcmallocDrop-in global allocator using tcmalloc221,315MIT/Apache-2.0Memory management volatile-memA library for managing volatile memory213,024Apache-2.0Embedded developmentMemory management allocation-counterCount the number of memory allocation of some code.213,002MIT/Apache-2.0Development toolsMemory management tracking-allocatorglobal allocator that provides hooks for tracking allocation events207,094MPL-2.0Development tools::ProfilingMemory management alloc_counterCount allocations, reallocations, deallocations. Allow, deny, or forbid allocations on an expression or function basis.192,379MIT OR Apache-2.0Development tools::DebuggingDevelopment tools::Profiling relrcReference counted pointers, with relationships to other pointers.187,476Apache-2.0ConcurrencyMemory management cache-sizeA library for finding your L1/L2/L3 cache sizes185,200BSD-3-ClauseHardware supportMemory management hashconsingA hash consing library.181,070MIT/Apache-2.0CachingCompression nonzero_signedDEPRECATED Rust's std lib has stabilized their own signed NonZero types in Rust 1.34, please use those instead if you're using…177,291MIT/Apache-2.0Data structuresMemory management lol_alloclol_alloc: A laughably simple wasm global_allocator.176,982MITMemory managementNo standard library recastingtraits for one-to-one recasting of values in data structures175,099MIT OR Apache-2.0Data structuresMemory management nunnythe definitive non-empty slice/array/vec library for Rust170,151MIT OR Apache-2.0Data structuresEmbedded development tikv-jemallocator-globalSets `jemalloc` as the `#[global_allocator]`168,541MIT/Apache-2.0API bindingsMemory management generic_once_cellA bring-your-own-mutex version of once_cell.167,737MIT OR Apache-2.0Memory managementNo standard library memory_addrWrappers and helper functions for physical and virtual addresses166,696GPL-3.0-or-later OR Apache-2.0 OR MulanPSL-2.0Memory managementNo standard library exclusive_cellA thread-safe, non-blocking, no-std cell that can only be accessed once.164,129MIT OR Apache-2.0Memory managementNo standard library boow`Borrow Or oWned` smart pointer. Alternative to Cow.156,565MITMemory managementNo standard library tcmalloc-sysDrop-in global allocator using tcmalloc155,465MIT/Apache-2.0Memory management keyviKeyvi - the key value index. It is an in-memory FST-based data structure highly optimized for size and lookup performance.152,062Apache-2.0AlgorithmsData structures take-staticStatic items that provide mutable access only once.149,313MIT OR Apache-2.0Memory managementNo standard library blink-allocFast, concurrent, arena-based allocator with drop support143,227MIT OR Apache-2.0Memory managementNo standard library mortonMorton space filling curve functions141,708MITAlgorithmsCaching opoolHigh-performance, lock-free local and concurrent object pool with automated allocation, cleanup, and verification.139,828MITConcurrencyMemory management effective-limitsEstimate effective resource limits for a process e.g. how much RAM is available for use.139,185Apache-2.0ConfigurationMemory management memory_addressesUnified virtual and physical address types for the Hermit ecosystem and beyond138,496MIT/Apache-2.0Memory managementNo standard library hurdlesCounter-based thread barrier130,992MIT/Apache-2.0ConcurrencyMemory management page_table_entryPage table entry definition for various hardware architectures129,386GPL-3.0-or-later OR Apache-2.0 OR MulanPSL-2.0Hardware supportMemory management near-rust-allocator-proxyRust allocator proxy with added header124,752Apache-2.0Memory management once_cell_serdeSingle assignment cells and lazy values.121,709MIT OR Apache-2.0Memory managementRust patterns slotmap_fork_lmondadaSlotmap data structure120,909ZlibCachingData structures triple_arenaRegular, Chain, Surjection, and Ordered Arenas supporting non-Clone types, deletion, and more115,664MIT OR Apache-2.0Data structuresMemory management membarrierProcess-wide memory barrier115,006MIT/Apache-2.0ConcurrencyMemory management malloc-infoA safe wrapper around glibc's malloc_info112,923MIT OR Apache-2.0Development toolsMemory management endian-type-rsType safe wrappers for types with a defined byte order112,775MITEmbedded developmentMemory management fortifyA simple and convenient way to bundle owned data with a borrowing type111,385MIT OR Apache-2.0Memory managementRust patterns bitmap-allocatorBit allocator based on segment tree algorithm.111,190Apache-2.0Memory managementNo standard library fdt-rsA flattened device tree parser for embedded no-std environments110,158MITEmbedded developmentMemory management aligned-cmovFast constant-time conditional moves of aligned bytes110,062GPL-3.0CryptographyEmbedded development