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perf(ext/ffi): Optimize FFI Rust side type checks (#14923)
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@aapoalas
aapoalas committed Jun 21, 2022
1 parent a38a1f9 commit 82655b9
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Showing 3 changed files with 72 additions and 53 deletions.
121 changes: 68 additions & 53 deletions ext/ffi/lib.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -627,47 +627,47 @@ where
ffi_args.push(NativeValue { i32_value: value });
}
NativeType::U64 => {
let value: u64 = if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value)?;
value.u64_value().0
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI u64 type, expected number")
})? as u64
};
let value: u64 =
if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
value.u64_value().0
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI u64 type, expected number")
})? as u64
};
ffi_args.push(NativeValue { u64_value: value });
}
NativeType::I64 => {
let value: i64 = if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value)?;
value.i64_value().0
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI i64 type, expected number")
})? as i64
};
let value: i64 =
if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
value.i64_value().0
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI i64 type, expected number")
})? as i64
};
ffi_args.push(NativeValue { i64_value: value });
}
NativeType::USize => {
let value: usize = if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value)?;
value.u64_value().0 as usize
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI usize type, expected number")
})? as usize
};
let value: usize =
if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
value.u64_value().0 as usize
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI usize type, expected number")
})? as usize
};
ffi_args.push(NativeValue { usize_value: value });
}
NativeType::ISize => {
let value: isize = if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value)?;
value.i64_value().0 as isize
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI isize type, expected number")
})? as isize
};
let value: isize =
if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
value.i64_value().0 as isize
} else {
value.integer_value(scope).ok_or_else(|| {
type_error("Invalid FFI isize type, expected number")
})? as isize
};
ffi_args.push(NativeValue { isize_value: value });
}
NativeType::F32 => {
Expand All @@ -688,16 +688,28 @@ where
if value.is_null() {
let value: *const u8 = ptr::null();
ffi_args.push(NativeValue { pointer: value })
} else if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value).unwrap();
} else if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
let value = value.u64_value().0 as *const u8;
ffi_args.push(NativeValue { pointer: value });
} else if value.is_array_buffer() || value.is_array_buffer_view() {
let value: ZeroCopyBuf = serde_v8::from_v8(scope, value)?;
let value: &[u8] = &value[..];
ffi_args.push(NativeValue {
pointer: value.as_ptr(),
});
} else if let Ok(value) =
v8::Local::<v8::ArrayBufferView>::try_from(value)
{
let byte_offset = value.byte_offset();
let backing_store = value
.buffer(scope)
.ok_or_else(|| {
type_error(
"Invalid FFI ArrayBufferView, expected data in the buffer",
)
})?
.get_backing_store();
let pointer = &backing_store[byte_offset] as *const _ as *const u8;
ffi_args.push(NativeValue { pointer });
} else if let Ok(value) = v8::Local::<v8::ArrayBuffer>::try_from(value)
{
let backing_store = value.get_backing_store();
let pointer = &backing_store as *const _ as *const u8;
ffi_args.push(NativeValue { pointer });
} else {
return Err(type_error("Invalid FFI pointer type, expected null, BigInt, ArrayBuffer, or ArrayBufferView"));
}
Expand All @@ -706,8 +718,7 @@ where
if value.is_null() {
let value: *const u8 = ptr::null();
ffi_args.push(NativeValue { pointer: value })
} else if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value).unwrap();
} else if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
let value = value.u64_value().0 as *const u8;
ffi_args.push(NativeValue { pointer: value });
} else {
Expand Down Expand Up @@ -969,13 +980,19 @@ unsafe extern "C" fn deno_ffi_callback(
.expect("Unable to deserialize result parameter.");
}
FFI_TYPE_POINTER | FFI_TYPE_STRUCT => {
if value.is_array_buffer() | value.is_array_buffer_view() {
let value: ZeroCopyBuf = serde_v8::from_v8(&mut scope, value)
.expect("Unable to deserialize result parameter.");
let value: &[u8] = &value[..];
*(result as *mut *const u8) = value.as_ptr();
} else if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value).unwrap();
if let Ok(value) = v8::Local::<v8::ArrayBufferView>::try_from(value) {
let byte_offset = value.byte_offset();
let backing_store = value
.buffer(&mut scope)
.expect("Unable to deserialize result parameter.")
.get_backing_store();
let pointer = &backing_store[byte_offset] as *const _ as *const u8;
*(result as *mut *const u8) = pointer;
} else if let Ok(value) = v8::Local::<v8::ArrayBuffer>::try_from(value) {
let backing_store = value.get_backing_store();
let pointer = &backing_store as *const _ as *const u8;
*(result as *mut *const u8) = pointer;
} else if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
*(result as *mut u64) = value.u64_value().0;
} else if value.is_null() {
*(result as *mut *const c_void) = ptr::null();
Expand Down Expand Up @@ -1018,8 +1035,7 @@ unsafe extern "C" fn deno_ffi_callback(
.expect("Unable to deserialize result parameter.");
}
FFI_TYPE_SINT64 => {
if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value).unwrap();
if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
*(result as *mut i64) = value.i64_value().0;
} else {
*(result as *mut i64) = value
Expand All @@ -1029,8 +1045,7 @@ unsafe extern "C" fn deno_ffi_callback(
}
}
FFI_TYPE_UINT64 => {
if value.is_big_int() {
let value = v8::Local::<v8::BigInt>::try_from(value).unwrap();
if let Ok(value) = v8::Local::<v8::BigInt>::try_from(value) {
*(result as *mut u64) = value.u64_value().0;
} else {
*(result as *mut u64) = value
Expand Down
1 change: 1 addition & 0 deletions test_ffi/tests/integration_tests.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@ fn basic() {
let expected = "\
something\n\
[1, 2, 3, 4, 5, 6, 7, 8]\n\
[4, 5, 6]\n\
[1, 2, 3, 4, 5, 6, 7, 8] [9, 10]\n\
[1, 2, 3, 4, 5, 6, 7, 8]\n\
[ 1, 2, 3, 4, 5, 6 ]\n\
Expand Down
3 changes: 3 additions & 0 deletions test_ffi/tests/test.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,9 @@ dylib.symbols.printSomething();
const buffer = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
const buffer2 = new Uint8Array([9, 10]);
dylib.symbols.print_buffer(buffer, buffer.length);
// Test subarrays
const subarray = buffer.subarray(3);
dylib.symbols.print_buffer(subarray, subarray.length - 2);
dylib.symbols.print_buffer2(buffer, buffer.length, buffer2, buffer2.length);
const ptr0 = dylib.symbols.return_buffer();
dylib.symbols.print_buffer(ptr0, 8);
Expand Down

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