lz4-sys-1.11.1+lz4-1.10.0/.cargo_vcs_info.json0000644000000001450000000000100136620ustar { "git": { "sha1": "5f52707d2e9b3c7f6a1a3e95180c00e7a6204d21" }, "path_in_vcs": "lz4-sys" }lz4-sys-1.11.1+lz4-1.10.0/CHANGELOG.md000064400000000000000000000003761046102023000142710ustar 000000000000001.10.0: * No change to lz4-sys crate 1.9.5: * expand Lz4FrameInfo struct 1.7.5: * Change version number 1.0.1+1.7.5: * Update lz4 to v1.7.5 #18 (thanks to Roguelazer) 1.0.1+1.7.3: * Split out separate sys package #16 (thanks to Thijs Cadier) lz4-sys-1.11.1+lz4-1.10.0/Cargo.toml0000644000000015700000000000100116630ustar # THIS FILE IS AUTOMATICALLY GENERATED BY CARGO # # When uploading crates to the registry Cargo will automatically # "normalize" Cargo.toml files for maximal compatibility # with all versions of Cargo and also rewrite `path` dependencies # to registry (e.g., crates.io) dependencies. # # If you are reading this file be aware that the original Cargo.toml # will likely look very different (and much more reasonable). # See Cargo.toml.orig for the original contents. [package] name = "lz4-sys" version = "1.11.1+lz4-1.10.0" authors = [ "Jens Heyens ", "Artem V. Navrotskiy ", "Patrick Marks ", ] build = "build.rs" links = "lz4" description = "Rust LZ4 sys package." license = "MIT" repository = "https://github.com/10xGenomics/lz4-rs" [dependencies.libc] version = "0.2" [build-dependencies.cc] version = "1.1" lz4-sys-1.11.1+lz4-1.10.0/Cargo.toml.orig0000644000000006070000000000100126220ustar [package] name = "lz4-sys" license = "MIT" links = "lz4" version = "1.11.1+lz4-1.10.0" authors = [ "Jens Heyens ", "Artem V. Navrotskiy ", "Patrick Marks "] build = "build.rs" description = "Rust LZ4 sys package." repository = "https://github.com/10xGenomics/lz4-rs" [dependencies] libc = "0.2" [build-dependencies] cc = "1.1" lz4-sys-1.11.1+lz4-1.10.0/Cargo.toml.orig000064400000000000000000000006071046102023000153440ustar 00000000000000[package] name = "lz4-sys" license = "MIT" links = "lz4" version = "1.11.1+lz4-1.10.0" authors = [ "Jens Heyens ", "Artem V. Navrotskiy ", "Patrick Marks "] build = "build.rs" description = "Rust LZ4 sys package." repository = "https://github.com/10xGenomics/lz4-rs" [dependencies] libc = "0.2" [build-dependencies] cc = "1.1" lz4-sys-1.11.1+lz4-1.10.0/LICENSE000064400000000000000000000020771046102023000134650ustar 00000000000000The MIT License (MIT) Copyright (c) 2015 Artem V. Navrotskiy Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. lz4-sys-1.11.1+lz4-1.10.0/build.rs000064400000000000000000000055661046102023000141330ustar 00000000000000extern crate cc; use std::error::Error; use std::path::PathBuf; use std::{env, fs, process}; fn main() { match run() { Ok(()) => (), Err(err) => { eprintln!("{}", err); process::exit(1); } } } fn run() -> Result<(), Box> { let mut compiler = cc::Build::new(); compiler .file("liblz4/lib/lz4.c") .file("liblz4/lib/lz4frame.c") .file("liblz4/lib/lz4hc.c") .file("liblz4/lib/xxhash.c") // We always compile the C with optimization, because otherwise it is 20x slower. .opt_level(3); let target = get_from_env("TARGET")?; if target.contains("windows") { if target == "i686-pc-windows-gnu" { // Disable auto-vectorization for 32-bit MinGW target. compiler.flag("-fno-tree-vectorize"); } if let Ok(value) = get_from_env("CRT_STATIC") { if value.to_uppercase() == "TRUE" { // Must supply the /MT compiler flag to use the multi-threaded, static VCRUNTIME library // when building on Windows. Cargo does not pass RUSTFLAGS to build scripts // (see: https://github.com/rust-lang/cargo/issues/4423) so we must use a custom env // variable "CRT_STATIC." compiler.static_crt(true); } } } let need_wasm_shim = target == "wasm32-unknown-unknown" || target.starts_with("wasm32-wasi") || target == "wasm32-unknown-emscripten"; if need_wasm_shim { println!("cargo:rerun-if-changed=wasm-shim/stdlib.h"); println!("cargo:rerun-if-changed=wasm-shim/string.h"); compiler.include("wasm-shim/"); } compiler.compile("liblz4.a"); let src = env::current_dir()?.join("liblz4").join("lib"); let dst = PathBuf::from(env::var_os("OUT_DIR").ok_or("missing OUT_DIR environment variable")?); let include = dst.join("include"); fs::create_dir_all(&include) .map_err(|err| format!("creating directory {}: {}", include.display(), err))?; for e in fs::read_dir(&src)? { let e = e?; let utf8_file_name = e .file_name() .into_string() .map_err(|_| format!("unable to convert file name {:?} to UTF-8", e.file_name()))?; if utf8_file_name.ends_with(".h") { let from = e.path(); let to = include.join(e.file_name()); fs::copy(&from, &to).map_err(|err| { format!("copying {} to {}: {}", from.display(), to.display(), err) })?; } } println!("cargo:root={}", dst.display()); println!("cargo:include={}", include.display()); Ok(()) } /// Try to read environment variable as `String` fn get_from_env(variable: &str) -> Result { env::var(variable).map_err(|err| format!("reading {} environment variable: {}", variable, err)) } lz4-sys-1.11.1+lz4-1.10.0/src/lib.rs000064400000000000000000000457271046102023000143740ustar 00000000000000#![no_std] extern crate libc; #[cfg(not(all( target_arch = "wasm32", not(any(target_env = "wasi", target_os = "wasi")) )))] pub use libc::{c_char, c_int, c_uint, c_ulonglong, c_void, size_t}; #[cfg(all( target_arch = "wasm32", not(any(target_env = "wasi", target_os = "wasi")) ))] extern crate alloc; #[cfg(all( target_arch = "wasm32", not(any(target_env = "wasi", target_os = "wasi")) ))] mod wasm_shim; #[cfg(all( target_arch = "wasm32", not(any(target_env = "wasi", target_os = "wasi")) ))] extern crate std; #[cfg(all( target_arch = "wasm32", not(any(target_env = "wasi", target_os = "wasi")) ))] pub use std::os::raw::{c_char, c_int, c_uint, c_ulonglong, c_void}; #[cfg(all( target_arch = "wasm32", not(any(target_env = "wasi", target_os = "wasi")) ))] #[allow(non_camel_case_types)] pub type size_t = usize; #[derive(Clone, Copy, Debug)] #[repr(C)] pub struct LZ4FCompressionContext(pub *mut c_void); unsafe impl Send for LZ4FCompressionContext {} #[derive(Clone, Copy, Debug)] #[repr(C)] pub struct LZ4FDecompressionContext(pub *mut c_void); unsafe impl Send for LZ4FDecompressionContext {} pub type LZ4FErrorCode = size_t; #[derive(Clone, Debug)] #[repr(u32)] pub enum BlockSize { Default = 0, // Default - 64KB Max64KB = 4, Max256KB = 5, Max1MB = 6, Max4MB = 7, } impl BlockSize { pub fn get_size(&self) -> usize { match self { &BlockSize::Default | &BlockSize::Max64KB => 64 * 1024, &BlockSize::Max256KB => 256 * 1024, &BlockSize::Max1MB => 1 * 1024 * 1024, &BlockSize::Max4MB => 4 * 1024 * 1024, } } } #[derive(Clone, Debug)] #[repr(u32)] pub enum BlockMode { Linked = 0, Independent, } #[derive(Clone, Debug)] #[repr(u32)] pub enum ContentChecksum { NoChecksum = 0, ChecksumEnabled, } #[derive(Clone, Debug)] #[repr(u32)] pub enum FrameType { Frame = 0, SkippableFrame, } #[derive(Clone, Debug)] #[repr(u32)] pub enum BlockChecksum { NoBlockChecksum = 0, BlockChecksumEnabled, } #[derive(Debug)] #[repr(C)] pub struct LZ4FFrameInfo { pub block_size_id: BlockSize, pub block_mode: BlockMode, pub content_checksum_flag: ContentChecksum, pub frame_type: FrameType, pub content_size: c_ulonglong, pub dict_id: c_uint, pub block_checksum_flag: BlockChecksum, } #[derive(Debug)] #[repr(C)] pub struct LZ4FPreferences { pub frame_info: LZ4FFrameInfo, pub compression_level: c_uint, // 0 == default (fast mode); values above 16 count as 16 pub auto_flush: c_uint, // 1 == always flush : reduce need for tmp buffer pub favor_dec_speed: c_uint, // 1 == favor decompression speed over ratio, requires level 10+ pub reserved: [c_uint; 3], } #[derive(Debug)] #[repr(C)] pub struct LZ4FCompressOptions { pub stable_src: c_uint, /* 1 == src content will remain available on future calls * to LZ4F_compress(); avoid saving src content within tmp * buffer as future dictionary */ pub reserved: [c_uint; 3], } #[derive(Debug)] #[repr(C)] pub struct LZ4FDecompressOptions { pub stable_dst: c_uint, /* guarantee that decompressed data will still be there on next * function calls (avoid storage into tmp buffers) */ pub reserved: [c_uint; 3], } #[derive(Debug)] #[repr(C)] pub struct LZ4StreamEncode(c_void); #[derive(Debug)] #[repr(C)] pub struct LZ4StreamDecode(c_void); pub const LZ4F_VERSION: c_uint = 100; extern "C" { // int LZ4_compress_default(const char* source, char* dest, int sourceSize, int maxDestSize); #[allow(non_snake_case)] pub fn LZ4_compress_default (source: *const c_char, dest: *mut c_char, sourceSize: c_int, maxDestSize: c_int) -> c_int; // int LZ4_compress_fast (const char* source, char* dest, int sourceSize, int maxDestSize, int acceleration); #[allow(non_snake_case)] pub fn LZ4_compress_fast (source: *const c_char, dest: *mut c_char, sourceSize: c_int, maxDestSize: c_int, acceleration: c_int) -> c_int; // int LZ4_compress_HC (const char* src, char* dst, int srcSize, int dstCapacity, int compressionLevel); #[allow(non_snake_case)] pub fn LZ4_compress_HC (src: *const c_char, dst: *mut c_char, srcSize: c_int, dstCapacity: c_int, compressionLevel: c_int) -> c_int; // int LZ4_decompress_safe (const char* source, char* dest, int compressedSize, int maxDecompressedSize); #[allow(non_snake_case)] pub fn LZ4_decompress_safe (source: *const c_char, dest: *mut c_char, compressedSize: c_int, maxDecompressedSize: c_int) -> c_int; // unsigned LZ4F_isError(LZ4F_errorCode_t code); pub fn LZ4F_isError(code: size_t) -> c_uint; // const char* LZ4F_getErrorName(LZ4F_errorCode_t code); pub fn LZ4F_getErrorName(code: size_t) -> *const c_char; // LZ4F_createCompressionContext() : // The first thing to do is to create a compressionContext object, which will be used in all // compression operations. // This is achieved using LZ4F_createCompressionContext(), which takes as argument a version // and an LZ4F_preferences_t structure. // The version provided MUST be LZ4F_VERSION. It is intended to track potential version // differences between different binaries. // The function will provide a pointer to a fully allocated LZ4F_compressionContext_t object. // If the result LZ4F_errorCode_t is not zero, there was an error during context creation. // Object can release its memory using LZ4F_freeCompressionContext(); // // LZ4F_errorCode_t LZ4F_createCompressionContext( // LZ4F_compressionContext_t* LZ4F_compressionContextPtr, // unsigned version); pub fn LZ4F_createCompressionContext(ctx: &mut LZ4FCompressionContext, version: c_uint) -> LZ4FErrorCode; // LZ4F_errorCode_t LZ4F_freeCompressionContext( // LZ4F_compressionContext_t LZ4F_compressionContext); pub fn LZ4F_freeCompressionContext(ctx: LZ4FCompressionContext) -> LZ4FErrorCode; // LZ4F_compressBegin() : // will write the frame header into dstBuffer. // dstBuffer must be large enough to accommodate a header (dstMaxSize). Maximum header // size is 19 bytes. // The LZ4F_preferences_t structure is optional : you can provide NULL as argument, all // preferences will then be set to default. // The result of the function is the number of bytes written into dstBuffer for the header // or an error code (can be tested using LZ4F_isError()) // // size_t LZ4F_compressBegin(LZ4F_compressionContext_t compressionContext, // void* dstBuffer, // size_t dstMaxSize, // const LZ4F_preferences_t* preferencesPtr); pub fn LZ4F_compressBegin(ctx: LZ4FCompressionContext, dstBuffer: *mut u8, dstMaxSize: size_t, preferencesPtr: *const LZ4FPreferences) -> LZ4FErrorCode; // LZ4F_compressBound() : // Provides the minimum size of Dst buffer given srcSize to handle worst case situations. // preferencesPtr is optional : you can provide NULL as argument, all preferences will then // be set to default. // Note that different preferences will produce in different results. // // size_t LZ4F_compressBound(size_t srcSize, const LZ4F_preferences_t* preferencesPtr); pub fn LZ4F_compressBound(srcSize: size_t, preferencesPtr: *const LZ4FPreferences) -> LZ4FErrorCode; // LZ4F_compressUpdate() // LZ4F_compressUpdate() can be called repetitively to compress as much data as necessary. // The most important rule is that dstBuffer MUST be large enough (dstMaxSize) to ensure // compression completion even in worst case. // If this condition is not respected, LZ4F_compress() will fail (result is an errorCode) // You can get the minimum value of dstMaxSize by using LZ4F_compressBound() // The LZ4F_compressOptions_t structure is optional : you can provide NULL as argument. // The result of the function is the number of bytes written into dstBuffer : it can be zero, // meaning input data was just buffered. // The function outputs an error code if it fails (can be tested using LZ4F_isError()) // // size_t LZ4F_compressUpdate(LZ4F_compressionContext_t compressionContext, // void* dstBuffer, // size_t dstMaxSize, // const void* srcBuffer, // size_t srcSize, // const LZ4F_compressOptions_t* compressOptionsPtr); pub fn LZ4F_compressUpdate(ctx: LZ4FCompressionContext, dstBuffer: *mut u8, dstMaxSize: size_t, srcBuffer: *const u8, srcSize: size_t, compressOptionsPtr: *const LZ4FCompressOptions) -> size_t; // LZ4F_flush() // Should you need to create compressed data immediately, without waiting for a block // to be be filled, you can call LZ4_flush(), which will immediately compress any remaining // data buffered within compressionContext. // The LZ4F_compressOptions_t structure is optional : you can provide NULL as argument. // The result of the function is the number of bytes written into dstBuffer // (it can be zero, this means there was no data left within compressionContext) // The function outputs an error code if it fails (can be tested using LZ4F_isError()) // // size_t LZ4F_flush(LZ4F_compressionContext_t compressionContext, // void* dstBuffer, // size_t dstMaxSize, // const LZ4F_compressOptions_t* compressOptionsPtr); pub fn LZ4F_flush(ctx: LZ4FCompressionContext, dstBuffer: *mut u8, dstMaxSize: size_t, compressOptionsPtr: *const LZ4FCompressOptions) -> LZ4FErrorCode; // LZ4F_compressEnd() // When you want to properly finish the compressed frame, just call LZ4F_compressEnd(). // It will flush whatever data remained within compressionContext (like LZ4_flush()) // but also properly finalize the frame, with an endMark and a checksum. // The result of the function is the number of bytes written into dstBuffer // (necessarily >= 4 (endMark size)) // The function outputs an error code if it fails (can be tested using LZ4F_isError()) // The LZ4F_compressOptions_t structure is optional : you can provide NULL as argument. // compressionContext can then be used again, starting with LZ4F_compressBegin(). // // size_t LZ4F_compressEnd(LZ4F_compressionContext_t compressionContext, // void* dstBuffer, // size_t dstMaxSize, // const LZ4F_compressOptions_t* compressOptionsPtr); pub fn LZ4F_compressEnd(ctx: LZ4FCompressionContext, dstBuffer: *mut u8, dstMaxSize: size_t, compressOptionsPtr: *const LZ4FCompressOptions) -> LZ4FErrorCode; // LZ4F_createDecompressionContext() : // The first thing to do is to create a decompressionContext object, which will be used // in all decompression operations. // This is achieved using LZ4F_createDecompressionContext(). // The version provided MUST be LZ4F_VERSION. It is intended to track potential version // differences between different binaries. // The function will provide a pointer to a fully allocated and initialized // LZ4F_decompressionContext_t object. // If the result LZ4F_errorCode_t is not OK_NoError, there was an error during // context creation. // Object can release its memory using LZ4F_freeDecompressionContext(); // // LZ4F_errorCode_t LZ4F_createDecompressionContext(LZ4F_decompressionContext_t* ctxPtr, // unsigned version); pub fn LZ4F_createDecompressionContext(ctx: &mut LZ4FDecompressionContext, version: c_uint) -> LZ4FErrorCode; // LZ4F_errorCode_t LZ4F_freeDecompressionContext(LZ4F_decompressionContext_t ctx); pub fn LZ4F_freeDecompressionContext(ctx: LZ4FDecompressionContext) -> LZ4FErrorCode; // LZ4F_getFrameInfo() // This function decodes frame header information, such as blockSize. // It is optional : you could start by calling directly LZ4F_decompress() instead. // The objective is to extract header information without starting decompression, typically // for allocation purposes. // LZ4F_getFrameInfo() can also be used *after* starting decompression, on a // valid LZ4F_decompressionContext_t. // The number of bytes read from srcBuffer will be provided within *srcSizePtr // (necessarily <= original value). // You are expected to resume decompression from where it stopped (srcBuffer + *srcSizePtr) // The function result is an hint of how many srcSize bytes LZ4F_decompress() expects for // next call, or an error code which can be tested using LZ4F_isError(). // // size_t LZ4F_getFrameInfo(LZ4F_decompressionContext_t ctx, // LZ4F_frameInfo_t* frameInfoPtr, // const void* srcBuffer, size_t* srcSizePtr); pub fn LZ4F_getFrameInfo(ctx: LZ4FDecompressionContext, frameInfoPtr: &mut LZ4FFrameInfo, srcBuffer: *const u8, srcSizePtr: &mut size_t) -> LZ4FErrorCode; // LZ4F_decompress() // Call this function repetitively to regenerate data compressed within srcBuffer. // The function will attempt to decode *srcSizePtr bytes from srcBuffer, into dstBuffer of // maximum size *dstSizePtr. // // The number of bytes regenerated into dstBuffer will be provided within *dstSizePtr // (necessarily <= original value). // // The number of bytes read from srcBuffer will be provided within *srcSizePtr // (necessarily <= original value). // If number of bytes read is < number of bytes provided, then decompression operation // is not completed. It typically happens when dstBuffer is not large enough to contain // all decoded data. // LZ4F_decompress() must be called again, starting from where it stopped // (srcBuffer + *srcSizePtr) // The function will check this condition, and refuse to continue if it is not respected. // // dstBuffer is supposed to be flushed between each call to the function, since its content // will be overwritten. // dst arguments can be changed at will with each consecutive call to the function. // // The function result is an hint of how many srcSize bytes LZ4F_decompress() expects for // next call. // Schematically, it's the size of the current (or remaining) compressed block + header of // next block. // Respecting the hint provides some boost to performance, since it does skip intermediate // buffers. // This is just a hint, you can always provide any srcSize you want. // When a frame is fully decoded, the function result will be 0. (no more data expected) // If decompression failed, function result is an error code, which can be tested // using LZ4F_isError(). // // size_t LZ4F_decompress(LZ4F_decompressionContext_t ctx, // void* dstBuffer, size_t* dstSizePtr, // const void* srcBuffer, size_t* srcSizePtr, // const LZ4F_decompressOptions_t* optionsPtr); pub fn LZ4F_decompress(ctx: LZ4FDecompressionContext, dstBuffer: *mut u8, dstSizePtr: &mut size_t, srcBuffer: *const u8, srcSizePtr: &mut size_t, optionsPtr: *const LZ4FDecompressOptions) -> LZ4FErrorCode; // int LZ4_versionNumber(void) pub fn LZ4_versionNumber() -> c_int; // int LZ4_compressBound(int isize) pub fn LZ4_compressBound(size: c_int) -> c_int; // LZ4_stream_t* LZ4_createStream(void) pub fn LZ4_createStream() -> *mut LZ4StreamEncode; // int LZ4_compress_continue(LZ4_stream_t* LZ4_streamPtr, // const char* source, // char* dest, // int inputSize) pub fn LZ4_compress_continue(LZ4_stream: *mut LZ4StreamEncode, source: *const u8, dest: *mut u8, input_size: c_int) -> c_int; // int LZ4_freeStream(LZ4_stream_t* LZ4_streamPtr) pub fn LZ4_freeStream(LZ4_stream: *mut LZ4StreamEncode) -> c_int; // int LZ4_setStreamDecode (LZ4_streamDecode_t* LZ4_streamDecode, // const char* dictionary, // int dictSize) pub fn LZ4_setStreamDecode(LZ4_stream: *mut LZ4StreamDecode, dictionary: *const u8, dict_size: c_int) -> c_int; // LZ4_streamDecode_t* LZ4_createStreamDecode(void) pub fn LZ4_createStreamDecode() -> *mut LZ4StreamDecode; // int LZ4_decompress_safe_continue(LZ4_streamDecode_t* LZ4_streamDecode, // const char* source, // char* dest, // int compressedSize, // int maxDecompressedSize) pub fn LZ4_decompress_safe_continue(LZ4_stream: *mut LZ4StreamDecode, source: *const u8, dest: *mut u8, compressed_size: c_int, max_decompressed_size: c_int) -> c_int; // int LZ4_freeStreamDecode(LZ4_streamDecode_t* LZ4_stream) pub fn LZ4_freeStreamDecode(LZ4_stream: *mut LZ4StreamDecode) -> c_int; // LZ4F_resetDecompressionContext() // In case of an error, the context is left in "undefined" state. // In which case, it's necessary to reset it, before re-using it. // This method can also be used to abruptly stop any unfinished decompression, // and start a new one using same context resources. pub fn LZ4F_resetDecompressionContext(ctx: LZ4FDecompressionContext); } #[test] fn test_version_number() { unsafe { LZ4_versionNumber(); } } #[test] fn test_frame_info_size() { assert_eq!(core::mem::size_of::(), 32); }lz4-sys-1.11.1+lz4-1.10.0/src/wasm_shim.rs000064400000000000000000000106001046102023000155730ustar 00000000000000//! A shim for the libc functions used in lz4-rs that are not available when building for wasm //! targets. Adapted from the shim present in the [zstd](https://github.com/gyscos/zstd-rs) crate. //! zstd-rs license here: //! The MIT License (MIT) //! Copyright (c) 2016 Alexandre Bury //! //! Permission is hereby granted, free of charge, to any person obtaining a copy of this software //! and associated documentation files (the "Software"), to deal in the Software without //! restriction, including without limitation the rights to use, copy, modify, merge, publish, //! distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the //! Software is furnished to do so, subject to the following conditions: //! //! The above copyright notice and this permission notice shall be included in all copies or //! substantial portions of the Software. //! //! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING //! BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND //! NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, //! DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, //! OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. use alloc::alloc::{alloc, alloc_zeroed, dealloc, Layout}; use core::ffi::{c_int, c_void}; const USIZE_ALIGN: usize = core::mem::align_of::(); const USIZE_SIZE: usize = core::mem::size_of::(); #[no_mangle] pub extern "C" fn rust_lz4_wasm_shim_malloc(size: usize) -> *mut c_void { wasm_shim_alloc::(size) } #[no_mangle] pub extern "C" fn rust_lz4_wasm_shim_memcmp( str1: *const c_void, str2: *const c_void, n: usize, ) -> i32 { // Safety: function contracts requires str1 and str2 at least `n`-long. unsafe { let str1: &[u8] = core::slice::from_raw_parts(str1 as *const u8, n); let str2: &[u8] = core::slice::from_raw_parts(str2 as *const u8, n); match str1.cmp(str2) { core::cmp::Ordering::Less => -1, core::cmp::Ordering::Equal => 0, core::cmp::Ordering::Greater => 1, } } } #[no_mangle] pub extern "C" fn rust_lz4_wasm_shim_calloc(nmemb: usize, size: usize) -> *mut c_void { // note: calloc expects the allocation to be zeroed wasm_shim_alloc::(nmemb * size) } #[inline] fn wasm_shim_alloc(size: usize) -> *mut c_void { // in order to recover the size upon free, we store the size below the allocation // special alignment is never requested via the malloc API, // so it's not stored, and usize-alignment is used // memory layout: [size] [allocation] let full_alloc_size = size + USIZE_SIZE; unsafe { let layout = Layout::from_size_align_unchecked(full_alloc_size, USIZE_ALIGN); let ptr = if ZEROED { alloc_zeroed(layout) } else { alloc(layout) }; // SAFETY: ptr is usize-aligned and we've allocated sufficient memory ptr.cast::().write(full_alloc_size); ptr.add(USIZE_SIZE).cast() } } #[no_mangle] pub unsafe extern "C" fn rust_lz4_wasm_shim_free(ptr: *mut c_void) { // the layout for the allocation needs to be recovered for dealloc // - the size must be recovered from directly below the allocation // - the alignment will always by USIZE_ALIGN let alloc_ptr = ptr.sub(USIZE_SIZE); // SAFETY: the allocation routines must uphold having a valid usize below the provided pointer let full_alloc_size = alloc_ptr.cast::().read(); let layout = Layout::from_size_align_unchecked(full_alloc_size, USIZE_ALIGN); dealloc(alloc_ptr.cast(), layout); } #[no_mangle] pub unsafe extern "C" fn rust_lz4_wasm_shim_memcpy( dest: *mut c_void, src: *const c_void, n: usize, ) -> *mut c_void { core::ptr::copy_nonoverlapping(src as *const u8, dest as *mut u8, n); dest } #[no_mangle] pub unsafe extern "C" fn rust_lz4_wasm_shim_memmove( dest: *mut c_void, src: *const c_void, n: usize, ) -> *mut c_void { core::ptr::copy(src as *const u8, dest as *mut u8, n); dest } #[no_mangle] pub unsafe extern "C" fn rust_lz4_wasm_shim_memset( dest: *mut c_void, c: c_int, n: usize, ) -> *mut c_void { core::ptr::write_bytes(dest as *mut u8, c as u8, n); dest } lz4-sys-1.11.1+lz4-1.10.0/wasm-shim/assert.h000064400000000000000000000001171046102023000160300ustar 00000000000000#ifndef _ASSERT_H #define _ASSERT_H #define assert(expr) #endif // _ASSERT_H lz4-sys-1.11.1+lz4-1.10.0/wasm-shim/stdlib.h000064400000000000000000000006141046102023000160120ustar 00000000000000#include #ifndef _STDLIB_H #define _STDLIB_H 1 void *rust_lz4_wasm_shim_malloc(size_t size); void *rust_lz4_wasm_shim_calloc(size_t nmemb, size_t size); void rust_lz4_wasm_shim_free(void *ptr); #define malloc(size) rust_lz4_wasm_shim_malloc(size) #define calloc(nmemb, size) rust_lz4_wasm_shim_calloc(nmemb, size) #define free(ptr) rust_lz4_wasm_shim_free(ptr) #endif // _STDLIB_H lz4-sys-1.11.1+lz4-1.10.0/wasm-shim/string.h000064400000000000000000000015211046102023000160350ustar 00000000000000#include #ifndef _STRING_H #define _STRING_H 1 int rust_lz4_wasm_shim_memcmp(const void *str1, const void *str2, size_t n); void *rust_lz4_wasm_shim_memcpy(void *restrict dest, const void *restrict src, size_t n); void *rust_lz4_wasm_shim_memmove(void *dest, const void *src, size_t n); void *rust_lz4_wasm_shim_memset(void *dest, int c, size_t n); inline int memcmp(const void *str1, const void *str2, size_t n) { return rust_lz4_wasm_shim_memcmp(str1, str2, n); } inline void *memcpy(void *restrict dest, const void *restrict src, size_t n) { return rust_lz4_wasm_shim_memcpy(dest, src, n); } inline void *memmove(void *dest, const void *src, size_t n) { return rust_lz4_wasm_shim_memmove(dest, src, n); } inline void *memset(void *dest, int c, size_t n) { return rust_lz4_wasm_shim_memset(dest, c, n); } #endif // _STRING_H