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#![allow(non_snake_case, non_camel_case_types)] //! # 🐏 rpmalloc-sys //! //! [![Build Status](https://github.com/EmbarkStudios/rpmalloc-rs/workflows/CI/badge.svg)](https://github.com/EmbarkStudios/rpmalloc-rs/actions?workflow=CI) //! [![Crates.io](https://img.shields.io/crates/v/rpmalloc-sys.svg)](https://crates.io/crates/rpmalloc-sys) //! [![Docs](https://docs.rs/rpmalloc-sys/badge.svg)](https://docs.rs/rpmalloc-sys) //! [![Contributor Covenant](https://img.shields.io/badge/contributor%20covenant-v1.4%20adopted-ff69b4.svg)](../CODE_OF_CONDUCT.md) //! [![Embark](https://img.shields.io/badge/embark-open%20source-blueviolet.svg)](http://embark.dev) //! //! Unsafe FFI bindings to [rpmalloc](https://github.com/rampantpixels/rpmalloc) C library //! //! ## Contributing //! //! We welcome community contributions to this project. //! //! Please read our [Contributor Guide](CONTRIBUTING.md) for more information on how to get started. //! //! ## License //! //! Licensed under either of //! //! * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) //! * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) //! //! at your option. //! //! Note that the [rpmalloc](https://github.com/rampantpixels/rpmalloc) library this crate uses is under public domain, and can also be licensed under MIT. //! //! ### Contribution //! //! Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions. #[cfg(test)] mod tests; pub use libc::{c_int, c_uint, c_void, size_t}; pub type c_bool = c_int; #[repr(C)] #[derive(Clone, Copy, Default, Debug)] pub struct rpmalloc_global_statistics_t { /// Current amount of virtual memory mapped, all of which might not have been committed (only if ENABLE_STATISTICS=1) pub mapped: size_t, /// Peak amount of virtual memory mapped, all of which might not have been committed (only if ENABLE_STATISTICS=1) pub mapped_peak: size_t, /// Current amount of memory in global caches for small and medium sizes (<32KiB) pub cached: size_t, /// Current amount of memory allocated in huge allocations, i.e larger than LARGE_SIZE_LIMIT which is 2MiB by default (only if ENABLE_STATISTICS=1) pub huge_alloc: size_t, /// Peak amount of memory allocated in huge allocations, i.e larger than LARGE_SIZE_LIMIT which is 2MiB by default (only if ENABLE_STATISTICS=1) pub huge_alloc_peak: size_t, /// Total amount of memory mapped since initialization (only if ENABLE_STATISTICS=1) pub mapped_total: size_t, /// Total amount of memory unmapped since initialization (only if ENABLE_STATISTICS=1) pub unmapped_total: size_t, } #[repr(C)] #[derive(Clone, Copy, Default, Debug)] pub struct rpmalloc_thread_span_statistics_t { /// Currently used number of spans pub current: size_t, /// High water mark of spans used pub peak: size_t, /// Number of spans transitioned to global cache pub to_global: size_t, /// Number of spans transitioned from global cache pub from_global: size_t, /// Number of spans transitioned to thread cache pub to_cache: size_t, /// Number of spans transitioned from thread cache pub from_cache: size_t, /// Number of spans transitioned to reserved state pub to_reserved: size_t, /// Number of spans transitioned from reserved state pub from_reserved: size_t, /// Number of raw memory map calls (not hitting the reserve spans but resulting in actual OS mmap calls) pub map_calls: size_t, } #[repr(C)] #[derive(Clone, Copy)] pub struct rpmalloc_thread_size_statistics_t { /// Current number of allocations pub alloc_current: size_t, /// Peak number of allocations pub alloc_peak: size_t, /// Total number of allocations pub alloc_total: size_t, /// Total number of frees pub free_total: size_t, /// Number of spans transitioned to cache pub spans_to_cache: size_t, /// Number of spans transitioned from cache pub spans_from_cache: size_t, /// Number of spans transitioned from reserved state pub spans_from_reserved: size_t, /// Number of raw memory map calls (not hitting the reserve spans but resulting in actual OS mmap calls) pub map_calls: size_t, } #[repr(C)] #[derive(Clone, Copy)] pub struct rpmalloc_thread_statistics_t { /// Current number of bytes available in thread size class caches for small and medium sizes (<32KiB) pub sizecache: size_t, /// Current number of bytes available in thread span caches for small and medium sizes (<32KiB) pub spancache: size_t, /// Total number of bytes transitioned from thread cache to global cache (only if ENABLE_STATISTICS=1) pub thread_to_global: size_t, /// Total number of bytes transitioned from global cache to thread cache (only if ENABLE_STATISTICS=1) pub global_to_thread: size_t, /// Per span count statistics (only if ENABLE_STATISTICS=1) pub span_use: [rpmalloc_thread_span_statistics_t; 32], /// Per size class statistics (only if ENABLE_STATISTICS=1) pub size_use: [rpmalloc_thread_size_statistics_t; 128], } /* typedef struct rpmalloc_config_t { //! Map memory pages for the given number of bytes. The returned address MUST be // aligned to the rpmalloc span size, which will always be a power of two. // Optionally the function can store an alignment offset in the offset variable // in case it performs alignment and the returned pointer is offset from the // actual start of the memory region due to this alignment. The alignment offset // will be passed to the memory unmap function. The alignment offset MUST NOT be // larger than 65535 (storable in an uint16_t), if it is you must use natural // alignment to shift it into 16 bits. If you set a memory_map function, you // must also set a memory_unmap function or else the default implementation will // be used for both. void* (*memory_map)(pub size, size_t* offset); //! Unmap the memory pages starting at address and spanning the given number of bytes. // If release is set to non-zero, the unmap is for an entire span range as returned by // a previous call to memory_map and that the entire range should be released. The // release argument holds the size of the entire span range. If release is set to 0, // the unmap is a partial decommit of a subset of the mapped memory range. // If you set a memory_unmap function, you must also set a memory_map function or // else the default implementation will be used for both. void (*memory_unmap)(void* address, pub size, pub offset, pub release); //! Size of memory pages. The page size MUST be a power of two. All memory mapping // requests to memory_map will be made with size set to a multiple of the page size. pub page_size; //! Size of a span of memory blocks. MUST be a power of two, and in [4096,262144] // range (unless 0 - set to 0 to use the default span size). pub span_size; //! Number of spans to map at each request to map new virtual memory blocks. This can // be used to minimize the system call overhead at the cost of virtual memory address // space. The extra mapped pages will not be written until actually used, so physical // committed memory should not be affected in the default implementation. Will be // aligned to a multiple of spans that match memory page size in case of huge pages. pub span_map_count; //! Enable use of large/huge pages int enable_huge_pages; //! Debug callback if memory guards are enabled. Called if a memory overwrite is detected void (*memory_overwrite)(void* address); } rpmalloc_config_t; */ extern "C" { pub fn rpmalloc_initialize() -> c_int; //extern int rpmalloc_initialize_config(const rpmalloc_config_t* config); //extern const rpmalloc_config_t* rpmalloc_config(void); pub fn rpmalloc_finalize(); pub fn rpmalloc_thread_initialize(); pub fn rpmalloc_thread_finalize(); pub fn rpmalloc_thread_collect(); pub fn rpmalloc_is_thread_initialized() -> c_bool; pub fn rpmalloc_thread_statistics(stats: *mut rpmalloc_thread_statistics_t); pub fn rpmalloc_global_statistics(stats: *mut rpmalloc_global_statistics_t); pub fn rpmalloc(size: size_t) -> *mut c_void; pub fn rpfree(ptr: *mut c_void); pub fn rpcalloc(num: size_t, size: size_t) -> *mut c_void; pub fn rprealloc(ptr: *mut c_void, size: size_t) -> *mut c_void; pub fn rpaligned_realloc( ptr: *mut c_void, alignment: size_t, size: size_t, oldsize: size_t, flags: c_uint, ) -> *mut c_void; pub fn rpaligned_alloc(alignment: size_t, size: size_t) -> *mut c_void; pub fn rpmemalign(alignment: size_t, size: size_t) -> *mut c_void; //extern int rpposix_memalign(void **memptr, pub alignment, pub size); pub fn rpmalloc_usable_size(ptr: *mut c_void) -> size_t; }