Asynchronous threading phase2

.github/workflows/test.yaml

@@ -128,6 +128,24 @@ jobs:
       - name: make build-wasmer-wasm
         run: make build-wasmer-wasm
 
+  test_build_jsc:
+    name: Test JSC build
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: 1.65
+          target: x86_64-unknown-linux-gnu
+      - name: Install NodeJS
+        uses: actions/setup-node@v2
+        with:
+          node-version: 16
+      - name: Install libjavascriptcoregtk-4.0-dev
+        run: sudo apt update && sudo apt install -y libjavascriptcoregtk-4.0-dev
+      - name: make build-wasmer-jsc
+        run: make build-wasmer-jsc
+
   test_build_docs_rs:
     name: Test build docs rs
     runs-on: ubuntu-22.04
@@ -140,7 +158,7 @@ jobs:
       - run: cargo install toml-cli # toml-cli is required to run `make test-build-docs-rs`
       - name: make test-build-docs-rs
         run: make test-build-docs-rs
-
+  
   build_linux_aarch64:
     name: ${{ matrix.build-what.name }} on linux-aarch64
     runs-on: ubuntu-22.04

lib/api/src/externals/memory.rs

@@ -135,8 +135,7 @@ impl Memory {
             });
         }
         self.0
-            .try_clone(&store)
-            .and_then(|mut memory| memory.copy().ok())
+            .try_copy(&store)
             .map(|new_memory| Self::new_from_existing(new_store, new_memory.into()))
             .ok_or_else(|| {
                 MemoryError::Generic("memory is not clonable or could not be copied".to_string())
@@ -178,7 +177,7 @@ impl Memory {
 
     /// Attempts to clone this memory (if its clonable) in a new store
     /// (cloned memory will be shared between those that clone it)
-    #[deprecated = "use `shared_in_store` or `copy_to_store` instead"]
+    #[deprecated = "use `share_in_store` or `copy_to_store` instead"]
     pub fn duplicate_in_store(
         &self,
         store: &impl AsStoreRef,

lib/api/src/js/externals/memory.rs

@@ -140,11 +140,19 @@ impl Memory {
         Self { handle: internal }
     }
 
+    /// Cloning memory will create another reference to the same memory that
+    /// can be put into a new store
     pub fn try_clone(&self, _store: &impl AsStoreRef) -> Option<VMMemory> {
         self.handle.try_clone()
     }
 
-    #[deprecated = "use `try_clone` instead"]
+    /// Copying the memory will actually copy all the bytes in the memory to
+    /// a identical byte copy of the original that can be put into a new store
+    pub fn try_copy(&self, store: &impl AsStoreRef) -> Option<VMMemory> {
+        self.try_clone(store).and_then(|mut mem| mem.copy().ok())
+    }
+
+    #[deprecated = "use `try_clone` and `try_copy` instead"]
     pub fn duplicate_in_store(
         &self,
         store: &impl AsStoreRef,

lib/api/src/jsc/externals/memory.rs

@@ -170,10 +170,30 @@ impl Memory {
         Self { handle: internal }
     }
 
+    /// Cloning memory will create another reference to the same memory that
+    /// can be put into a new store
     pub fn try_clone(&self, _store: &impl AsStoreRef) -> Option<VMMemory> {
         self.handle.try_clone()
     }
 
+    /// Copying the memory will actually copy all the bytes in the memory to
+    /// a identical byte copy of the original that can be put into a new store
+    pub fn try_copy(&self, store: &impl AsStoreRef) -> Option<VMMemory> {
+        self.try_clone(store)
+            .and_then(|mut mem| mem.copy(store).ok())
+    }
+
+    #[deprecated = "use `try_clone` and `try_copy` instead"]
+    pub fn duplicate_in_store(
+        &self,
+        store: &impl AsStoreRef,
+        new_store: &mut impl AsStoreMut,
+    ) -> Option<Self> {
+        self.try_clone(&store)
+            .and_then(|mut memory| memory.duplicate(&store).ok())
+            .map(|new_memory| Self::new_from_existing(new_store, new_memory.into()))
+    }
+
     pub fn is_from_store(&self, _store: &impl AsStoreRef) -> bool {
         true
     }

lib/api/src/jsc/externals/memory_view.rs

@@ -23,11 +23,11 @@ pub struct MemoryView<'a> {
 }
 
 impl<'a> MemoryView<'a> {
-    pub(crate) fn new(memory: &Memory, store: &'a impl AsStoreRef) -> Self {
+    pub(crate) fn new(memory: &Memory, store: &'a (impl AsStoreRef + ?Sized)) -> Self {
         Self::new_raw(&memory.handle.memory, store)
     }
 
-    pub(crate) fn new_raw(memory: &JSObject, store: &'a impl AsStoreRef) -> Self {
+    pub(crate) fn new_raw(memory: &JSObject, store: &'a (impl AsStoreRef + ?Sized)) -> Self {
         let store_ref = store.as_store_ref();
         let engine = store_ref.engine();
         let context = engine.0.context();

lib/api/src/jsc/vm.rs

@@ -50,10 +50,16 @@ impl VMMemory {
     }
 
     /// Copies this memory to a new memory
+    #[deprecated = "use `copy` instead"]
     pub fn duplicate(
-        &self,
+        &mut self,
         store: &impl AsStoreRef,
     ) -> Result<VMMemory, wasmer_types::MemoryError> {
+        self.copy(store)
+    }
+
+    /// Copies this memory to a new memory
+    pub fn copy(&self, store: &impl AsStoreRef) -> Result<VMMemory, wasmer_types::MemoryError> {
         let new_memory =
             crate::jsc::externals::memory::Memory::js_memory_from_type(&store, &self.ty)?;
 

lib/api/src/sys/externals/memory.rs

@@ -63,12 +63,20 @@ impl Memory {
         self.handle.store_id() == store.as_store_ref().objects().id()
     }
 
+    /// Cloning memory will create another reference to the same memory that
+    /// can be put into a new store
     pub fn try_clone(&self, store: &impl AsStoreRef) -> Option<VMMemory> {
         let mem = self.handle.get(store.as_store_ref().objects());
         mem.try_clone().map(|mem| mem.into())
     }
 
-    #[deprecated = "use `try_clone` instead"]
+    /// Copying the memory will actually copy all the bytes in the memory to
+    /// a identical byte copy of the original that can be put into a new store
+    pub fn try_copy(&self, store: &impl AsStoreRef) -> Option<Box<dyn LinearMemory + 'static>> {
+        self.try_clone(store).and_then(|mut mem| mem.copy().ok())
+    }
+
+    #[deprecated = "use `try_clone` and `try_copy` instead"]
     pub fn duplicate_in_store(
         &self,
         store: &impl AsStoreRef,

lib/cli/Cargo.toml

@@ -72,6 +72,7 @@ hex = "0.4.3"
 flate2 = "1.0.25"
 cargo_metadata = "0.15.2"
 tar = "0.4.38"
+bytes = "1"
 thiserror = "1.0.37"
 log = "0.4.17"
 semver = "1.0.14"

lib/cli/src/commands/run.rs

@@ -350,7 +350,7 @@ impl RunWithPathBuf {
                         .instantiate(&mut store, &module, program_name, self.args.clone())
                         .with_context(|| "failed to instantiate WASI module")?;
 
-                    let capable_of_deep_sleep = ctx.data(&store).capable_of_deep_sleep();
+                    let capable_of_deep_sleep = unsafe { ctx.data(&store).capable_of_deep_sleep() };
                     ctx.data_mut(&mut store)
                         .enable_deep_sleep = capable_of_deep_sleep;
 

lib/cli/src/commands/run/wasi.rs

@@ -1,5 +1,7 @@
+use crate::anyhow::Context;
 use crate::utils::{parse_envvar, parse_mapdir};
-use anyhow::{Context, Result};
+use anyhow::Result;
+use bytes::Bytes;
 use std::{
     collections::{BTreeSet, HashMap},
     path::{Path, PathBuf},
@@ -14,7 +16,7 @@ use wasmer_wasix::{
     bin_factory::BinaryPackage,
     default_fs_backing, get_wasi_versions,
     os::{tty_sys::SysTty, TtyBridge},
-    rewind,
+    rewind_ext,
     runners::MappedDirectory,
     runtime::{
         module_cache::{FileSystemCache, ModuleCache},
@@ -294,40 +296,30 @@ impl Wasi {
         run: RunProperties,
         mut store: Store,
         tx: Sender<Result<i32>>,
-        rewind_state: Option<(RewindState, Result<(), Errno>)>,
+        rewind_state: Option<(RewindState, Bytes)>,
     ) {
         // If we need to rewind then do so
         let ctx = run.ctx;
-        if let Some((mut rewind_state, trigger_res)) = rewind_state {
+        if let Some((rewind_state, rewind_result)) = rewind_state {
             if rewind_state.is_64bit {
-                if let Err(exit_code) =
-                    rewind_state.rewinding_finish::<Memory64>(&ctx, &mut store, trigger_res)
-                {
-                    tx.send(Ok(exit_code.raw())).ok();
-                    return;
-                }
-                let res = rewind::<Memory64>(
+                let res = rewind_ext::<Memory64>(
                     ctx.env.clone().into_mut(&mut store),
                     rewind_state.memory_stack,
                     rewind_state.rewind_stack,
                     rewind_state.store_data,
+                    rewind_result,
                 );
                 if res != Errno::Success {
                     tx.send(Ok(res as i32)).ok();
                     return;
                 }
             } else {
-                if let Err(exit_code) =
-                    rewind_state.rewinding_finish::<Memory32>(&ctx, &mut store, trigger_res)
-                {
-                    tx.send(Ok(exit_code.raw())).ok();
-                    return;
-                }
-                let res = rewind::<Memory32>(
+                let res = rewind_ext::<Memory32>(
                     ctx.env.clone().into_mut(&mut store),
                     rewind_state.memory_stack,
                     rewind_state.rewind_stack,
                     rewind_state.store_data,
+                    rewind_result,
                 );
                 if res != Errno::Success {
                     tx.send(Ok(res as i32)).ok();
@@ -416,9 +408,15 @@ impl Wasi {
                         };
 
                         // Spawns the WASM process after a trigger
-                        tasks
-                            .resume_wasm_after_poller(Box::new(respawn), ctx, store, deep.trigger)
-                            .unwrap();
+                        unsafe {
+                            tasks.resume_wasm_after_poller(
+                                Box::new(respawn),
+                                ctx,
+                                store,
+                                deep.trigger,
+                            )
+                        }
+                        .unwrap();
                         return;
                     }
                     Ok(err) => Err(err.into()),

lib/wasi-types/src/wasi/bindings.rs

@@ -1,3 +1,5 @@
+#[cfg(feature = "enable-serde")]
+use serde::{Deserialize, Serialize};
 use std::mem::MaybeUninit;
 use wasmer::{MemorySize, ValueType};
 // TODO: Remove once bindings generate wai_bindgen_rust::bitflags::bitflags!  (temp hack)
@@ -93,6 +95,7 @@ impl core::fmt::Debug for Clockid {
 #[doc = " merely for alignment with POSIX."]
 #[repr(u16)]
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[cfg_attr(feature = "enable-serde", derive(Serialize, Deserialize))]
 pub enum Errno {
     #[doc = " No error occurred. System call completed successfully."]
     Success,
@@ -875,6 +878,7 @@ pub type Userdata = u64;
 #[doc = " Type of a subscription to an event or its occurrence."]
 #[repr(u8)]
 #[derive(Clone, Copy, PartialEq, Eq)]
+#[cfg_attr(feature = "enable-serde", derive(Serialize, Deserialize))]
 pub enum Eventtype {
     #[doc = " The time value of clock `subscription_clock::id` has"]
     #[doc = " reached timestamp `subscription_clock::timeout`."]
@@ -982,6 +986,7 @@ impl core::fmt::Debug for Preopentype {
 wai_bindgen_rust::bitflags::bitflags! {
     #[doc = " The state of the file descriptor subscribed to with"]
     #[doc = " `eventtype::fd_read` or `eventtype::fd_write`."]
+    #[cfg_attr(feature = "enable-serde", derive(Serialize, Deserialize))]
     pub struct Eventrwflags : u16 {
         #[doc = " The peer of this socket has closed or disconnected."]
         const FD_READWRITE_HANGUP = 1 << 0;
@@ -998,6 +1003,7 @@ impl Eventrwflags {
 #[doc = " `eventtype::fd_write` variants"]
 #[repr(C)]
 #[derive(Copy, Clone)]
+#[cfg_attr(feature = "enable-serde", derive(Serialize, Deserialize))]
 pub struct EventFdReadwrite {
     #[doc = " The number of bytes available for reading or writing."]
     pub nbytes: Filesize,

lib/wasi-types/src/wasi/wasix_manual.rs

@@ -1,3 +1,5 @@
+#[cfg(feature = "enable-serde")]
+use serde::{Deserialize, Serialize};
 use std::mem::MaybeUninit;
 
 use wasmer::{FromToNativeWasmType, MemorySize, ValueType};
@@ -179,7 +181,7 @@ unsafe impl ValueType for StackSnapshot {
 #[repr(C)]
 #[derive(Clone, Copy)]
 pub union JoinStatusUnion {
-    pub nothing_errno: Errno,
+    pub nothing: u8,
     pub exit_normal: Errno,
     pub exit_signal: ErrnoSignal,
     pub stopped: Signal,
@@ -196,7 +198,7 @@ impl core::fmt::Debug for JoinStatus {
         let mut f = binding.field("tag", &self.tag);
         f = unsafe {
             match self.tag {
-                JoinStatusType::Nothing => f.field("nothing_errno", &self.u.nothing_errno),
+                JoinStatusType::Nothing => f.field("nothing", &self.u.nothing),
                 JoinStatusType::ExitNormal => f.field("exit_normal", &self.u.exit_normal),
                 JoinStatusType::ExitSignal => f.field("exit_signal", &self.u.exit_signal),
                 JoinStatusType::Stopped => f.field("stopped", &self.u.stopped),
@@ -242,6 +244,7 @@ unsafe impl<M: MemorySize> ValueType for ThreadStart<M> {
 }
 
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+#[cfg_attr(feature = "enable-serde", derive(Serialize, Deserialize))]
 pub enum ExitCode {
     Errno(Errno),
     Other(i32),

lib/wasi-web/src/pool.rs

@@ -36,6 +36,7 @@ use wasmer_wasix::{
         },
         SpawnMemoryType,
     },
+    types::wasi::ExitCode,
     wasmer::{AsJs, Memory, MemoryType, Module, Store, WASM_MAX_PAGES},
     wasmer_wasix_types::wasi::Errno,
     InstanceSnapshot, VirtualTaskManager, WasiEnv, WasiFunctionEnv, WasiThreadError,
@@ -79,7 +80,7 @@ struct WasmRunCommand {
     snapshot: Option<InstanceSnapshot>,
     trigger: Option<WasmRunTrigger>,
     update_layout: bool,
-    result: Result<(), Errno>,
+    result: Option<Result<Bytes, ExitCode>>,
 }
 
 trait AssertSendSync: Send + Sync {}
@@ -320,7 +321,7 @@ impl WebThreadPool {
             module_bytes,
             snapshot,
             update_layout,
-            result: Ok(()),
+            result: None,
         });
         let task = Box::into_raw(task);
 
@@ -687,7 +688,7 @@ pub fn schedule_wasm_task(
     wasm_bindgen_futures::spawn_local(async move {
         if let Some(trigger) = trigger {
             let run = trigger.run;
-            task.result = run().await;
+            task.result = Some(run().await);
         }
 
         let task = Box::into_raw(task);

lib/wasi/Cargo.toml

@@ -15,7 +15,7 @@ cfg-if = "1.0"
 thiserror = "1"
 tracing = { version = "0.1" }
 getrandom = "0.2"
-wasmer-wasix-types = { path = "../wasi-types", version = "0.4.0" }
+wasmer-wasix-types = { path = "../wasi-types", version = "0.4.0", features = [ "enable-serde" ] }
 wasmer-types = { path = "../types", version = "=3.3.0", default-features = false }
 wasmer = { path = "../api", version = "=3.3.0", default-features = false, features = ["wat", "js-serializable-module"] }
 virtual-fs = { path = "../vfs", version = "0.2.0", default-features = false, features = ["webc-fs"] }