wasmtime-c-api: Add support for GC references to the wasm_* C API f…

…unctions

crates/c-api/src/async.rs

@@ -15,7 +15,7 @@ use wasmtime::{
 use crate::{
  bad_utf8, handle_result, to_str, translate_args, wasm_config_t, wasm_functype_t, wasm_trap_t,
  wasmtime_caller_t, wasmtime_error_t, wasmtime_instance_pre_t, wasmtime_linker_t,
- wasmtime_module_t, wasmtime_val_t, wasmtime_val_union, CStoreContextMut, WASMTIME_I32,
+ wasmtime_module_t, wasmtime_val_t, wasmtime_val_union, WasmtimeStoreContextMut, WASMTIME_I32,
 };
 
 #[no_mangle]
@@ -30,15 +30,15 @@ pub extern "C" fn wasmtime_config_async_stack_size_set(c: &mut wasm_config_t, si
 
 #[no_mangle]
 pub extern "C" fn wasmtime_context_epoch_deadline_async_yield_and_update(
- mut store: CStoreContextMut<'_>,
+ mut store: WasmtimeStoreContextMut<'_>,
  delta: u64,
 ) {
  store.epoch_deadline_async_yield_and_update(delta);
 }
 
 #[no_mangle]
 pub extern "C" fn wasmtime_context_fuel_async_yield_interval(
- mut store: CStoreContextMut<'_>,
+ mut store: WasmtimeStoreContextMut<'_>,
  interval: Option<NonZeroU64>,
 ) -> Option<Box<wasmtime_error_t>> {
  handle_result(
@@ -103,7 +103,7 @@ pub type wasmtime_func_async_continuation_callback_t = extern "C" fn(*mut c_void
 async fn invoke_c_async_callback<'a>(
  cb: wasmtime_func_async_callback_t,
  data: CallbackDataPtr,
- mut caller: Caller<'a, crate::StoreData>,
+ mut caller: Caller<'a, crate::WasmtimeStoreData>,
  params: &'a [Val],
  results: &'a mut [Val],
 ) -> Result<()> {
@@ -172,7 +172,7 @@ unsafe fn c_async_callback_to_rust_fn(
  data: *mut c_void,
  finalizer: Option<extern "C" fn(*mut std::ffi::c_void)>,
 ) -> impl for<'a> Fn(
- Caller<'a, crate::StoreData>,
+ Caller<'a, crate::WasmtimeStoreData>,
  &'a [Val],
  &'a mut [Val],
 ) -> Box<dyn Future<Output = Result<()>> + Send + 'a>
@@ -219,7 +219,7 @@ fn handle_call_error(
 }
 
 async fn do_func_call_async(
- mut store: CStoreContextMut<'_>,
+ mut store: WasmtimeStoreContextMut<'_>,
  func: &Func,
  args: impl ExactSizeIterator<Item = Val>,
  results: &mut [MaybeUninit<wasmtime_val_t>],
@@ -245,7 +245,7 @@ async fn do_func_call_async(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_func_call_async<'a>(
- mut store: CStoreContextMut<'a>,
+ mut store: WasmtimeStoreContextMut<'a>,
  func: &'a Func,
  args: *const wasmtime_val_t,
  nargs: usize,
@@ -295,7 +295,7 @@ pub unsafe extern "C" fn wasmtime_linker_define_async_func(
 
 async fn do_linker_instantiate_async(
  linker: &wasmtime_linker_t,
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  module: &wasmtime_module_t,
  instance_ptr: &mut Instance,
  trap_ret: &mut *mut wasm_trap_t,
@@ -311,7 +311,7 @@ async fn do_linker_instantiate_async(
 #[no_mangle]
 pub extern "C" fn wasmtime_linker_instantiate_async<'a>(
  linker: &'a wasmtime_linker_t,
- store: CStoreContextMut<'a>,
+ store: WasmtimeStoreContextMut<'a>,
  module: &'a wasmtime_module_t,
  instance_ptr: &'a mut Instance,
  trap_ret: &'a mut *mut wasm_trap_t,
@@ -330,7 +330,7 @@ pub extern "C" fn wasmtime_linker_instantiate_async<'a>(
 
 async fn do_instance_pre_instantiate_async(
  instance_pre: &wasmtime_instance_pre_t,
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  instance_ptr: &mut Instance,
  trap_ret: &mut *mut wasm_trap_t,
  err_ret: &mut *mut wasmtime_error_t,
@@ -345,7 +345,7 @@ async fn do_instance_pre_instantiate_async(
 #[no_mangle]
 pub extern "C" fn wasmtime_instance_pre_instantiate_async<'a>(
  instance_pre: &'a wasmtime_instance_pre_t,
- store: CStoreContextMut<'a>,
+ store: WasmtimeStoreContextMut<'a>,
  instance_ptr: &'a mut Instance,
  trap_ret: &'a mut *mut wasm_trap_t,
  err_ret: &'a mut *mut wasmtime_error_t,

crates/c-api/src/extern.rs

@@ -1,6 +1,6 @@
 use crate::{
  wasm_externkind_t, wasm_externtype_t, wasm_func_t, wasm_global_t, wasm_memory_t, wasm_table_t,
- CStoreContext, StoreRef,
+ WasmtimeStoreContext, StoreRef,
 };
 use std::mem::ManuallyDrop;
 use wasmtime::{Extern, Func, Global, Memory, SharedMemory, Table};
@@ -152,7 +152,7 @@ pub unsafe extern "C" fn wasmtime_extern_delete(e: &mut ManuallyDrop<wasmtime_ex
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_extern_type(
- store: CStoreContext<'_>,
+ store: WasmtimeStoreContext<'_>,
  e: &wasmtime_extern_t,
 ) -> Box<wasm_externtype_t> {
  Box::new(wasm_externtype_t::from_extern_type(e.to_extern().ty(store)))

crates/c-api/src/func.rs

@@ -1,7 +1,8 @@
 use crate::wasm_trap_t;
 use crate::{
  wasm_extern_t, wasm_functype_t, wasm_store_t, wasm_val_t, wasm_val_vec_t, wasmtime_error_t,
- wasmtime_extern_t, wasmtime_val_t, wasmtime_val_union, CStoreContext, CStoreContextMut,
+ wasmtime_extern_t, wasmtime_val_t, wasmtime_val_union, WasmtimeStoreContext,
+ WasmtimeStoreContextMut,
 };
 use anyhow::{Error, Result};
 use std::any::Any;
@@ -59,11 +60,11 @@ unsafe fn create_function(
  let func = Func::new(
  store.store.context_mut(),
  ty,
- move |_caller, params, results| {
+ move |mut caller, params, results| {
  let params: wasm_val_vec_t = params
  .iter()
  .cloned()
- .map(|p| wasm_val_t::from_val(p))
+ .map(|p| wasm_val_t::from_val(&mut caller.as_context_mut(), p))
  .collect::<Vec<_>>()
  .into();
  let mut out_results: wasm_val_vec_t = vec![wasm_val_t::default(); results.len()].into();
@@ -72,7 +73,7 @@ unsafe fn create_function(
  return Err(trap.error);
  }
 
- let out_results = out_results.as_slice();
+ let out_results = out_results.as_slice_mut();
  for i in 0..results.len() {
  results[i] = out_results[i].val();
  }
@@ -150,7 +151,10 @@ pub unsafe extern "C" fn wasm_func_call(
  match result {
  Ok(Ok(())) => {
  for (slot, val) in results.iter_mut().zip(wt_results.iter().cloned()) {
- crate::initialize(slot, wasm_val_t::from_val(val));
+ crate::initialize(
+ slot,
+ wasm_val_t::from_val(&mut func.ext.store.context_mut(), val),
+ );
  }
  ptr::null_mut()
  }
@@ -200,7 +204,7 @@ pub extern "C" fn wasm_func_as_extern_const(f: &wasm_func_t) -> &wasm_extern_t {
 
 #[repr(C)]
 pub struct wasmtime_caller_t<'a> {
- pub(crate) caller: Caller<'a, crate::StoreData>,
+ pub(crate) caller: Caller<'a, crate::WasmtimeStoreData>,
 }
 
 pub type wasmtime_func_callback_t = extern "C" fn(
@@ -221,7 +225,7 @@ pub type wasmtime_func_unchecked_callback_t = extern "C" fn(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_func_new(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  ty: &wasm_functype_t,
  callback: wasmtime_func_callback_t,
  data: *mut c_void,
@@ -238,7 +242,7 @@ pub(crate) unsafe fn c_callback_to_rust_fn(
  callback: wasmtime_func_callback_t,
  data: *mut c_void,
  finalizer: Option<extern "C" fn(*mut std::ffi::c_void)>,
-) -> impl Fn(Caller<'_, crate::StoreData>, &[Val], &mut [Val]) -> Result<()> {
+) -> impl Fn(Caller<'_, crate::WasmtimeStoreData>, &[Val], &mut [Val]) -> Result<()> {
  let foreign = crate::ForeignData { data, finalizer };
  move |mut caller, params, results| {
  let _ = &foreign; // move entire foreign into this closure
@@ -291,7 +295,7 @@ pub(crate) unsafe fn c_callback_to_rust_fn(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_func_new_unchecked(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  ty: &wasm_functype_t,
  callback: wasmtime_func_unchecked_callback_t,
  data: *mut c_void,
@@ -307,7 +311,7 @@ pub(crate) unsafe fn c_unchecked_callback_to_rust_fn(
  callback: wasmtime_func_unchecked_callback_t,
  data: *mut c_void,
  finalizer: Option<extern "C" fn(*mut std::ffi::c_void)>,
-) -> impl Fn(Caller<'_, crate::StoreData>, &mut [ValRaw]) -> Result<()> {
+) -> impl Fn(Caller<'_, crate::WasmtimeStoreData>, &mut [ValRaw]) -> Result<()> {
  let foreign = crate::ForeignData { data, finalizer };
  move |caller, values| {
  let _ = &foreign; // move entire foreign into this closure
@@ -321,7 +325,7 @@ pub(crate) unsafe fn c_unchecked_callback_to_rust_fn(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_func_call(
- mut store: CStoreContextMut<'_>,
+ mut store: WasmtimeStoreContextMut<'_>,
  func: &Func,
  args: *const wasmtime_val_t,
  nargs: usize,
@@ -367,7 +371,7 @@ pub unsafe extern "C" fn wasmtime_func_call(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_func_call_unchecked(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  func: &Func,
  args_and_results: *mut ValRaw,
  args_and_results_len: usize,
@@ -390,7 +394,7 @@ fn store_err(err: Error, trap_ret: &mut *mut wasm_trap_t) -> Option<Box<wasmtime
 
 #[no_mangle]
 pub extern "C" fn wasmtime_func_type(
- store: CStoreContext<'_>,
+ store: WasmtimeStoreContext<'_>,
  func: &Func,
 ) -> Box<wasm_functype_t> {
  Box::new(wasm_functype_t::new(func.ty(store)))
@@ -399,7 +403,7 @@ pub extern "C" fn wasmtime_func_type(
 #[no_mangle]
 pub extern "C" fn wasmtime_caller_context<'a>(
  caller: &'a mut wasmtime_caller_t,
-) -> CStoreContextMut<'a> {
+) -> WasmtimeStoreContextMut<'a> {
  caller.caller.as_context_mut()
 }
 
@@ -424,7 +428,7 @@ pub unsafe extern "C" fn wasmtime_caller_export_get(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_func_from_raw(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  raw: *mut c_void,
  func: &mut Func,
 ) {
@@ -433,7 +437,7 @@ pub unsafe extern "C" fn wasmtime_func_from_raw(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_func_to_raw(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  func: &Func,
 ) -> *mut c_void {
  func.to_raw(store)

crates/c-api/src/global.rs

@@ -1,6 +1,6 @@
 use crate::{
  handle_result, wasm_extern_t, wasm_globaltype_t, wasm_store_t, wasm_val_t, wasmtime_error_t,
- wasmtime_val_t, CStoreContext, CStoreContextMut,
+ wasmtime_val_t, WasmtimeStoreContext, WasmtimeStoreContextMut,
 };
 use std::mem::MaybeUninit;
 use wasmtime::{Extern, Global};
@@ -65,10 +65,9 @@ pub unsafe extern "C" fn wasm_global_type(g: &wasm_global_t) -> Box<wasm_globalt
 #[no_mangle]
 pub unsafe extern "C" fn wasm_global_get(g: &mut wasm_global_t, out: &mut MaybeUninit<wasm_val_t>) {
  let global = g.global();
- crate::initialize(
- out,
- wasm_val_t::from_val(global.get(g.ext.store.context_mut())),
- );
+ let mut ctx = g.ext.store.context_mut();
+ let val = global.get(&mut ctx);
+ crate::initialize(out, wasm_val_t::from_val(&mut ctx, val));
 }
 
 #[no_mangle]
@@ -79,7 +78,7 @@ pub unsafe extern "C" fn wasm_global_set(g: &mut wasm_global_t, val: &wasm_val_t
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_global_new(
- mut store: CStoreContextMut<'_>,
+ mut store: WasmtimeStoreContextMut<'_>,
  gt: &wasm_globaltype_t,
  val: &wasmtime_val_t,
  ret: &mut Global,
@@ -93,15 +92,15 @@ pub unsafe extern "C" fn wasmtime_global_new(
 
 #[no_mangle]
 pub extern "C" fn wasmtime_global_type(
- store: CStoreContext<'_>,
+ store: WasmtimeStoreContext<'_>,
  global: &Global,
 ) -> Box<wasm_globaltype_t> {
  Box::new(wasm_globaltype_t::new(global.ty(store)))
 }
 
 #[no_mangle]
 pub extern "C" fn wasmtime_global_get(
- mut store: CStoreContextMut<'_>,
+ mut store: WasmtimeStoreContextMut<'_>,
  global: &Global,
  val: &mut MaybeUninit<wasmtime_val_t>,
 ) {
@@ -111,7 +110,7 @@ pub extern "C" fn wasmtime_global_get(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_global_set(
- mut store: CStoreContextMut<'_>,
+ mut store: WasmtimeStoreContextMut<'_>,
  global: &Global,
  val: &wasmtime_val_t,
 ) -> Option<Box<wasmtime_error_t>> {

crates/c-api/src/instance.rs

@@ -1,6 +1,6 @@
 use crate::{
  wasm_extern_t, wasm_extern_vec_t, wasm_module_t, wasm_store_t, wasm_trap_t, wasmtime_error_t,
- wasmtime_extern_t, wasmtime_module_t, CStoreContextMut, StoreData, StoreRef,
+ wasmtime_extern_t, wasmtime_module_t, WasmtimeStoreContextMut, WasmtimeStoreData, StoreRef,
 };
 use std::mem::MaybeUninit;
 use wasmtime::{Instance, InstancePre, Trap};
@@ -70,7 +70,7 @@ pub unsafe extern "C" fn wasm_instance_exports(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_instance_new(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  module: &wasmtime_module_t,
  imports: *const wasmtime_extern_t,
  nimports: usize,
@@ -111,7 +111,7 @@ pub(crate) fn handle_instantiate(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_instance_export_get(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  instance: &Instance,
  name: *const u8,
  name_len: usize,
@@ -133,7 +133,7 @@ pub unsafe extern "C" fn wasmtime_instance_export_get(
 
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_instance_export_nth(
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  instance: &Instance,
  index: usize,
  name_ptr: &mut *const u8,
@@ -153,7 +153,7 @@ pub unsafe extern "C" fn wasmtime_instance_export_nth(
 
 #[repr(transparent)]
 pub struct wasmtime_instance_pre_t {
- pub(crate) underlying: InstancePre<StoreData>,
+ pub(crate) underlying: InstancePre<WasmtimeStoreData>,
 }
 
 #[no_mangle]
@@ -163,7 +163,7 @@ pub unsafe extern "C" fn wasmtime_instance_pre_delete(_instance_pre: Box<wasmtim
 #[no_mangle]
 pub unsafe extern "C" fn wasmtime_instance_pre_instantiate(
  instance_pre: &wasmtime_instance_pre_t,
- store: CStoreContextMut<'_>,
+ store: WasmtimeStoreContextMut<'_>,
  instance_ptr: &mut Instance,
  trap_ptr: &mut *mut wasm_trap_t,
 ) -> Option<Box<wasmtime_error_t>> {