summaryrefslogtreecommitdiff
path: root/tests/ffi/src/lib.rs
diff options
context:
space:
mode:
Diffstat (limited to 'tests/ffi/src/lib.rs')
-rw-r--r--tests/ffi/src/lib.rs559
1 files changed, 559 insertions, 0 deletions
diff --git a/tests/ffi/src/lib.rs b/tests/ffi/src/lib.rs
new file mode 100644
index 000000000..f6ee31eb8
--- /dev/null
+++ b/tests/ffi/src/lib.rs
@@ -0,0 +1,559 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use std::os::raw::c_void;
+use std::thread::sleep;
+use std::time::Duration;
+
+static BUFFER: [u8; 8] = [1, 2, 3, 4, 5, 6, 7, 8];
+
+#[no_mangle]
+pub extern "C" fn print_something() {
+ println!("something");
+}
+
+/// # Safety
+///
+/// The pointer to the buffer must be valid and initialized, and the length must
+/// not be longer than the buffer's allocation.
+#[no_mangle]
+pub unsafe extern "C" fn print_buffer(ptr: *const u8, len: usize) {
+ let buf = std::slice::from_raw_parts(ptr, len);
+ println!("{buf:?}");
+}
+
+/// # Safety
+///
+/// The pointer to the buffer must be valid and initialized, and the length must
+/// not be longer than the buffer's allocation.
+#[no_mangle]
+pub unsafe extern "C" fn print_buffer2(
+ ptr1: *const u8,
+ len1: usize,
+ ptr2: *const u8,
+ len2: usize,
+) {
+ let buf1 = std::slice::from_raw_parts(ptr1, len1);
+ let buf2 = std::slice::from_raw_parts(ptr2, len2);
+ println!("{buf1:?} {buf2:?}");
+}
+
+#[no_mangle]
+pub extern "C" fn return_buffer() -> *const u8 {
+ BUFFER.as_ptr()
+}
+
+#[no_mangle]
+pub extern "C" fn is_null_ptr(ptr: *const u8) -> bool {
+ ptr.is_null()
+}
+
+#[no_mangle]
+pub extern "C" fn add_u32(a: u32, b: u32) -> u32 {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_i32(a: i32, b: i32) -> i32 {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_u64(a: u64, b: u64) -> u64 {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_i64(a: i64, b: i64) -> i64 {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_usize(a: usize, b: usize) -> usize {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_usize_fast(a: usize, b: usize) -> u32 {
+ (a + b) as u32
+}
+
+#[no_mangle]
+pub extern "C" fn add_isize(a: isize, b: isize) -> isize {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_f32(a: f32, b: f32) -> f32 {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn add_f64(a: f64, b: f64) -> f64 {
+ a + b
+}
+
+#[no_mangle]
+pub extern "C" fn and(a: bool, b: bool) -> bool {
+ a && b
+}
+
+#[no_mangle]
+unsafe extern "C" fn hash(ptr: *const u8, length: u32) -> u32 {
+ let buf = std::slice::from_raw_parts(ptr, length as usize);
+ let mut hash: u32 = 0;
+ for byte in buf {
+ hash = hash.wrapping_mul(0x10001000).wrapping_add(*byte as u32);
+ }
+ hash
+}
+
+#[no_mangle]
+pub extern "C" fn sleep_blocking(ms: u64) {
+ let duration = Duration::from_millis(ms);
+ sleep(duration);
+}
+
+/// # Safety
+///
+/// The pointer to the buffer must be valid and initialized, and the length must
+/// not be longer than the buffer's allocation.
+#[no_mangle]
+pub unsafe extern "C" fn fill_buffer(value: u8, buf: *mut u8, len: usize) {
+ let buf = std::slice::from_raw_parts_mut(buf, len);
+ for itm in buf.iter_mut() {
+ *itm = value;
+ }
+}
+
+/// # Safety
+///
+/// The pointer to the buffer must be valid and initialized, and the length must
+/// not be longer than the buffer's allocation.
+#[no_mangle]
+pub unsafe extern "C" fn nonblocking_buffer(ptr: *const u8, len: usize) {
+ let buf = std::slice::from_raw_parts(ptr, len);
+ assert_eq!(buf, vec![1, 2, 3, 4, 5, 6, 7, 8]);
+}
+
+#[no_mangle]
+pub extern "C" fn get_add_u32_ptr() -> *const c_void {
+ add_u32 as *const c_void
+}
+
+#[no_mangle]
+pub extern "C" fn get_sleep_blocking_ptr() -> *const c_void {
+ sleep_blocking as *const c_void
+}
+
+#[no_mangle]
+pub extern "C" fn call_fn_ptr(func: Option<extern "C" fn()>) {
+ if func.is_none() {
+ return;
+ }
+ let func = func.unwrap();
+ func();
+}
+
+#[no_mangle]
+pub extern "C" fn call_fn_ptr_many_parameters(
+ func: Option<
+ extern "C" fn(u8, i8, u16, i16, u32, i32, u64, i64, f32, f64, *const u8),
+ >,
+) {
+ if func.is_none() {
+ return;
+ }
+ let func = func.unwrap();
+ func(1, -1, 2, -2, 3, -3, 4, -4, 0.5, -0.5, BUFFER.as_ptr());
+}
+
+#[no_mangle]
+pub extern "C" fn call_fn_ptr_return_u8(func: Option<extern "C" fn() -> u8>) {
+ if func.is_none() {
+ return;
+ }
+ let func = func.unwrap();
+ println!("u8: {}", func());
+}
+
+#[allow(clippy::not_unsafe_ptr_arg_deref)]
+#[no_mangle]
+pub extern "C" fn call_fn_ptr_return_buffer(
+ func: Option<extern "C" fn() -> *const u8>,
+) {
+ if func.is_none() {
+ return;
+ }
+ let func = func.unwrap();
+ let ptr = func();
+ let buf = unsafe { std::slice::from_raw_parts(ptr, 8) };
+ println!("buf: {buf:?}");
+}
+
+static mut STORED_FUNCTION: Option<extern "C" fn()> = None;
+static mut STORED_FUNCTION_2: Option<extern "C" fn(u8) -> u8> = None;
+
+#[no_mangle]
+pub extern "C" fn store_function(func: Option<extern "C" fn()>) {
+ unsafe { STORED_FUNCTION = func };
+ if func.is_none() {
+ println!("STORED_FUNCTION cleared");
+ }
+}
+
+#[no_mangle]
+pub extern "C" fn store_function_2(func: Option<extern "C" fn(u8) -> u8>) {
+ unsafe { STORED_FUNCTION_2 = func };
+ if func.is_none() {
+ println!("STORED_FUNCTION_2 cleared");
+ }
+}
+
+#[no_mangle]
+pub extern "C" fn call_stored_function() {
+ unsafe {
+ if STORED_FUNCTION.is_none() {
+ return;
+ }
+ STORED_FUNCTION.unwrap()();
+ }
+}
+
+#[no_mangle]
+pub extern "C" fn call_stored_function_2(arg: u8) {
+ unsafe {
+ if STORED_FUNCTION_2.is_none() {
+ return;
+ }
+ println!("{}", STORED_FUNCTION_2.unwrap()(arg));
+ }
+}
+
+#[no_mangle]
+pub extern "C" fn call_stored_function_thread_safe() {
+ std::thread::spawn(move || {
+ std::thread::sleep(std::time::Duration::from_millis(1500));
+ unsafe {
+ if STORED_FUNCTION.is_none() {
+ return;
+ }
+ STORED_FUNCTION.unwrap()();
+ }
+ });
+}
+
+#[no_mangle]
+pub extern "C" fn call_stored_function_thread_safe_and_log() {
+ std::thread::spawn(move || {
+ std::thread::sleep(std::time::Duration::from_millis(1500));
+ unsafe {
+ if STORED_FUNCTION.is_none() {
+ return;
+ }
+ STORED_FUNCTION.unwrap()();
+ println!("STORED_FUNCTION called");
+ }
+ });
+}
+
+#[no_mangle]
+pub extern "C" fn call_stored_function_2_thread_safe(arg: u8) {
+ std::thread::spawn(move || {
+ std::thread::sleep(std::time::Duration::from_millis(1500));
+ unsafe {
+ if STORED_FUNCTION_2.is_none() {
+ return;
+ }
+ println!("Calling");
+ STORED_FUNCTION_2.unwrap()(arg);
+ }
+ });
+}
+
+#[no_mangle]
+pub extern "C" fn log_many_parameters(
+ a: u8,
+ b: u16,
+ c: u32,
+ d: u64,
+ e: f64,
+ f: f32,
+ g: i64,
+ h: i32,
+ i: i16,
+ j: i8,
+ k: isize,
+ l: usize,
+ m: f64,
+ n: f32,
+ o: f64,
+ p: f32,
+ q: f64,
+ r: f32,
+ s: f64,
+) {
+ println!("{a} {b} {c} {d} {e} {f} {g} {h} {i} {j} {k} {l} {m} {n} {o} {p} {q} {r} {s}");
+}
+
+#[no_mangle]
+pub extern "C" fn cast_u8_u32(x: u8) -> u32 {
+ x as u32
+}
+
+#[no_mangle]
+pub extern "C" fn cast_u32_u8(x: u32) -> u8 {
+ x as u8
+}
+
+#[no_mangle]
+pub extern "C" fn add_many_u16(
+ a: u16,
+ b: u16,
+ c: u16,
+ d: u16,
+ e: u16,
+ f: u16,
+ g: u16,
+ h: u16,
+ i: u16,
+ j: u16,
+ k: u16,
+ l: u16,
+ m: u16,
+) -> u16 {
+ a + b + c + d + e + f + g + h + i + j + k + l + m
+}
+
+// FFI performance helper functions
+#[no_mangle]
+pub extern "C" fn nop() {}
+
+#[no_mangle]
+pub extern "C" fn nop_bool(_a: bool) {}
+
+#[no_mangle]
+pub extern "C" fn nop_u8(_a: u8) {}
+
+#[no_mangle]
+pub extern "C" fn nop_i8(_a: i8) {}
+
+#[no_mangle]
+pub extern "C" fn nop_u16(_a: u16) {}
+
+#[no_mangle]
+pub extern "C" fn nop_i16(_a: i16) {}
+
+#[no_mangle]
+pub extern "C" fn nop_u32(_a: u32) {}
+
+#[no_mangle]
+pub extern "C" fn nop_i32(_a: i32) {}
+
+#[no_mangle]
+pub extern "C" fn nop_u64(_a: u64) {}
+
+#[no_mangle]
+pub extern "C" fn nop_i64(_a: i64) {}
+
+#[no_mangle]
+pub extern "C" fn nop_usize(_a: usize) {}
+
+#[no_mangle]
+pub extern "C" fn nop_isize(_a: isize) {}
+
+#[no_mangle]
+pub extern "C" fn nop_f32(_a: f32) {}
+
+#[no_mangle]
+pub extern "C" fn nop_f64(_a: f64) {}
+
+#[no_mangle]
+pub extern "C" fn nop_buffer(_buffer: *mut [u8; 8]) {}
+
+#[no_mangle]
+pub extern "C" fn return_bool() -> bool {
+ true
+}
+
+#[no_mangle]
+pub extern "C" fn return_u8() -> u8 {
+ 255
+}
+
+#[no_mangle]
+pub extern "C" fn return_i8() -> i8 {
+ -128
+}
+
+#[no_mangle]
+pub extern "C" fn return_u16() -> u16 {
+ 65535
+}
+
+#[no_mangle]
+pub extern "C" fn return_i16() -> i16 {
+ -32768
+}
+
+#[no_mangle]
+pub extern "C" fn return_u32() -> u32 {
+ 4294967295
+}
+
+#[no_mangle]
+pub extern "C" fn return_i32() -> i32 {
+ -2147483648
+}
+
+#[no_mangle]
+pub extern "C" fn return_u64() -> u64 {
+ 18446744073709551615
+}
+
+#[no_mangle]
+pub extern "C" fn return_i64() -> i64 {
+ -9223372036854775808
+}
+
+#[no_mangle]
+pub extern "C" fn return_usize() -> usize {
+ 18446744073709551615
+}
+
+#[no_mangle]
+pub extern "C" fn return_isize() -> isize {
+ -9223372036854775808
+}
+
+#[no_mangle]
+pub extern "C" fn return_f32() -> f32 {
+ #[allow(clippy::excessive_precision)]
+ 0.20298023223876953125
+}
+
+#[no_mangle]
+pub extern "C" fn return_f64() -> f64 {
+ 1e-10
+}
+
+// Parameters iteration
+
+#[no_mangle]
+pub extern "C" fn nop_many_parameters(
+ _: u8,
+ _: i8,
+ _: u16,
+ _: i16,
+ _: u32,
+ _: i32,
+ _: u64,
+ _: i64,
+ _: usize,
+ _: isize,
+ _: f32,
+ _: f64,
+ _: *mut [u8; 8],
+ _: u8,
+ _: i8,
+ _: u16,
+ _: i16,
+ _: u32,
+ _: i32,
+ _: u64,
+ _: i64,
+ _: usize,
+ _: isize,
+ _: f32,
+ _: f64,
+ _: *mut [u8; 8],
+) {
+}
+
+// Statics
+#[no_mangle]
+pub static static_u32: u32 = 42;
+
+#[no_mangle]
+pub static static_i64: i64 = -1242464576485;
+
+#[repr(C)]
+pub struct Structure {
+ _data: u32,
+}
+
+#[no_mangle]
+pub static mut static_ptr: Structure = Structure { _data: 42 };
+
+static STRING: &str = "Hello, world!\0";
+
+#[no_mangle]
+extern "C" fn ffi_string() -> *const u8 {
+ STRING.as_ptr()
+}
+
+/// Invalid UTF-8 characters, array of length 14
+#[no_mangle]
+pub static static_char: [u8; 14] = [
+ 0xC0, 0xC1, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF,
+ 0x00,
+];
+
+#[derive(Debug)]
+#[repr(C)]
+pub struct Rect {
+ x: f64,
+ y: f64,
+ w: f64,
+ h: f64,
+}
+
+#[no_mangle]
+pub extern "C" fn make_rect(x: f64, y: f64, w: f64, h: f64) -> Rect {
+ Rect { x, y, w, h }
+}
+
+#[no_mangle]
+pub extern "C" fn print_rect(rect: Rect) {
+ println!("{rect:?}");
+}
+
+#[derive(Debug)]
+#[repr(C)]
+pub struct Mixed {
+ u8: u8,
+ f32: f32,
+ rect: Rect,
+ usize: usize,
+ array: [u32; 2],
+}
+
+/// # Safety
+///
+/// The array pointer to the buffer must be valid and initialized, and the length must
+/// be 2.
+#[no_mangle]
+pub unsafe extern "C" fn create_mixed(
+ u8: u8,
+ f32: f32,
+ rect: Rect,
+ usize: usize,
+ array: *const [u32; 2],
+) -> Mixed {
+ let array = *array
+ .as_ref()
+ .expect("Array parameter should contain value");
+ Mixed {
+ u8,
+ f32,
+ rect,
+ usize,
+ array,
+ }
+}
+
+#[no_mangle]
+pub extern "C" fn print_mixed(mixed: Mixed) {
+ println!("{mixed:?}");
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-27 02:55:45 +0000