fluencelabs/wasmer
1
0
Fork 0
mirror of https://github.com/fluencelabs/wasmer synced 2025-06-20 20:26:32 +00:00
Code Issues Projects Releases Wiki Activity

feat(runtime-c-api) Implement wasmer_import_trap.

Browse Source 
The new `wasmer_import_trap` allows a host function to fail properly
with the Wasmer trapping API.
This commit is contained in:
Ivan Enderlin
2020-01-10 15:13:30 +01:00
parent e913e8928f
commit 35459c2931
1 changed files with 27 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
lib/runtime-c-api/src/import/mod.rs
View File

@ -4,13 +4,20 @@
use crate::{
error::{update_last_error, CApiError},
export::{wasmer_import_export_kind, wasmer_import_export_value},
instance::wasmer_instance_context_t,
module::wasmer_module_t,
value::wasmer_value_tag,
wasmer_byte_array, wasmer_result_t,
};
use libc::c_uint;
use std::{convert::TryFrom, ffi::c_void, ptr, slice, sync::Arc};
use wasmer_runtime::{Global, Memory, Module, Table};
use std::{
convert::TryFrom,
ffi::{c_void, CStr},
os::raw::c_char,
ptr, slice,
sync::Arc,
};
use wasmer_runtime::{Ctx, Global, Memory, Module, Table};
use wasmer_runtime_core::{
export::{Context, Export, FuncPointer},
import::{ImportObject, ImportObjectIterator},
@ -661,6 +668,24 @@ pub unsafe extern "C" fn wasmer_import_func_new(
Box::into_raw(export) as *mut wasmer_import_func_t
}
/// Hello
#[no_mangle]
#[allow(clippy::cast_ptr_alignment)]
pub unsafe extern "C" fn wasmer_import_trap(
ctx: *const wasmer_instance_context_t,
error_message: *const c_char,
) -> c_uint {
let ctx = &*(ctx as *const Ctx);
let error_message = CStr::from_ptr(error_message).to_str().unwrap();
(&*ctx.module)
.runnable_module
.do_early_trap(Box::new(error_message)); // never returns
#[allow(unreachable_code)]
0
}
/// Sets the params buffer to the parameter types of the given wasmer_import_func_t
///
/// Returns `wasmer_result_t::WASMER_OK` upon success.