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zstd-sys: impl wasm32-unknown-unknown support (#139)
* impl wasm32-unknown-unknown support * Add zdict feature for zstd-sys * Fix comment * Fix wasm DEBUGLEVEL :'D * Add zdict_builder feature to zstd/zstd-safe * Fix test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| use std::convert::TryInto; | ||
|
|
||
| #[no_mangle] | ||
| pub extern "C" fn zstd_version() -> u32 { | ||
| unsafe { | ||
| zstd_sys::ZSTD_versionNumber() | ||
| } | ||
| } | ||
|
|
||
| macro_rules! zstd_check { | ||
| ( $ret:expr ) => {{ | ||
| let ret = $ret; | ||
| let error_code = unsafe { | ||
| zstd_sys::ZSTD_isError(ret) | ||
| }; | ||
| assert_eq!(error_code, 0); | ||
| }} | ||
| } | ||
|
|
||
| #[no_mangle] | ||
| pub extern "C" fn test_compress() -> bool { | ||
| let fbuf = include_bytes!("../Cargo.toml"); | ||
|
|
||
| let cbufsize = unsafe { | ||
| zstd_sys::ZSTD_compressBound(fbuf.len()) | ||
| }; | ||
| let mut cbuf = vec![0; cbufsize]; | ||
|
|
||
| let csize = unsafe { | ||
| zstd_sys::ZSTD_compress(cbuf.as_mut_ptr().cast(), cbuf.len(), fbuf.as_ptr().cast(), fbuf.len(), 1) | ||
| }; | ||
| zstd_check!(csize); | ||
| let cbuf = &cbuf[..csize]; | ||
|
|
||
| let rsize = unsafe { | ||
| zstd_sys::ZSTD_getFrameContentSize(cbuf.as_ptr().cast(), cbuf.len()) | ||
| }; | ||
| let rsize = rsize.try_into().unwrap(); | ||
| let mut rbuf = vec![0; rsize]; | ||
|
|
||
| let dsize = unsafe { | ||
| zstd_sys::ZSTD_decompress(rbuf.as_mut_ptr().cast(), rbuf.len(), cbuf.as_ptr().cast(), cbuf.len()) | ||
| }; | ||
| zstd_check!(dsize); | ||
| assert_eq!(dsize, rsize); | ||
|
|
||
| &fbuf[..] == &rbuf[..] | ||
| } | ||
|
|
||
| fn main() {} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| use std::os::raw::{c_void, c_int}; | ||
| use std::alloc::{alloc, dealloc, Layout}; | ||
|
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||
|
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| #[no_mangle] | ||
| pub extern "C" fn rust_zstd_wasm_shim_malloc(size: usize) -> *mut c_void { | ||
| unsafe { | ||
| let layout = Layout::from_size_align_unchecked(size, 1); | ||
| alloc(layout).cast() | ||
| } | ||
| } | ||
|
|
||
| #[no_mangle] | ||
| pub extern "C" fn rust_zstd_wasm_shim_calloc(nmemb: usize, size: usize) -> *mut c_void { | ||
| unsafe { | ||
| let layout = Layout::from_size_align_unchecked(size * nmemb, 1); | ||
| alloc(layout).cast() | ||
| } | ||
| } | ||
|
|
||
| #[no_mangle] | ||
| pub unsafe extern "C" fn rust_zstd_wasm_shim_free(ptr: *mut c_void) { | ||
| // layout is not actually used | ||
| let layout = Layout::from_size_align_unchecked(1, 1); | ||
| dealloc(ptr.cast(), layout); | ||
| } | ||
|
|
||
| #[no_mangle] | ||
| pub unsafe extern "C" fn rust_zstd_wasm_shim_memcpy(dest: *mut c_void, src: *const c_void, n: usize) -> *mut c_void { | ||
| std::ptr::copy_nonoverlapping(src as *const u8, dest as *mut u8, n); | ||
| dest | ||
| } | ||
|
|
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| #[no_mangle] | ||
| pub unsafe extern "C" fn rust_zstd_wasm_shim_memmove(dest: *mut c_void, src: *const c_void, n: usize) -> *mut c_void { | ||
| std::ptr::copy(src as *const u8, dest as *mut u8, n); | ||
| dest | ||
| } | ||
|
|
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| #[no_mangle] | ||
| pub unsafe extern "C" fn rust_zstd_wasm_shim_memset(dest: *mut c_void, c: c_int, n: usize) -> *mut c_void { | ||
| std::ptr::write_bytes(dest as *mut u8, c as u8, n); | ||
| dest | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| #include <stddef.h> | ||
|
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| #ifndef _STDLIB_H | ||
| #define _STDLIB_H 1 | ||
|
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| void *rust_zstd_wasm_shim_malloc(size_t size); | ||
| void *rust_zstd_wasm_shim_calloc(size_t nmemb, size_t size); | ||
| void rust_zstd_wasm_shim_free(void *ptr); | ||
|
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| inline void *malloc(size_t size) { | ||
| return rust_zstd_wasm_shim_malloc(size); | ||
| } | ||
|
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| inline void *calloc(size_t nmemb, size_t size) { | ||
| return rust_zstd_wasm_shim_calloc(nmemb, size); | ||
| } | ||
|
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| inline void free(void *ptr) { | ||
| rust_zstd_wasm_shim_free(ptr); | ||
| } | ||
|
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| #endif // _STDLIB_H |
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