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internal/task: use asyncify on webassembly

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This change implements a new "scheduler" for WebAssembly using binaryen's asyncify transform.
This is more reliable than the current "coroutines" transform, and works with non-Go code in the call stack.

runtime (js/wasm): handle scheduler nesting

If WASM calls into JS which calls back into WASM, it is possible for the scheduler to nest.
The event from the callback must be handled immediately, so the task cannot simply be deferred to the outer scheduler.
This creates a minimal scheduler loop which is used to handle such nesting.
This commit is contained in:
Nia Waldvogel
2021-07-21 14:30:01 -04:00
committed by Ron Evans
parent 523d1f28cf
commit 641dcd7c16
31 changed files with 785 additions and 62 deletions
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.circleci/config.yml
+75 -19
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@@ -25,7 +25,9 @@ commands:
qemu-system-arm \
qemu-user \
gcc-avr \
avr-libc
avr-libc \
cmake \
ninja-build
install-node:
steps:
- run:
@@ -49,6 +51,13 @@ commands:
command: |
curl https://wasmtime.dev/install.sh -sSf | bash
sudo ln -s ~/.wasmtime/bin/wasmtime /usr/local/bin/wasmtime
install-cmake:
steps:
- run:
name: "Install CMake"
command: |
wget https://github.com/Kitware/CMake/releases/download/v3.21.4/cmake-3.21.4-linux-x86_64.tar.gz
sudo tar --strip-components=1 -C /usr/local -xf cmake-3.21.4-linux-x86_64.tar.gz
install-xtensa-toolchain:
parameters:
variant:
@@ -76,6 +85,39 @@ commands:
- llvm-project/clang/include
- llvm-project/lld/include
- llvm-project/llvm/include
hack-ninja-jobs:
steps:
- run:
name: "Hack Ninja to use less jobs"
command: |
echo -e '#!/bin/sh\n/usr/bin/ninja -j3 "$@"' > /go/bin/ninja
chmod +x /go/bin/ninja
build-binaryen-linux:
steps:
- restore_cache:
keys:
- binaryen-linux-v1
- run:
name: "Build Binaryen"
command: |
make binaryen
- save_cache:
key: binaryen-linux-v1
paths:
- build/wasm-opt
build-binaryen-linux-stretch:
steps:
- restore_cache:
keys:
- binaryen-linux-stretch-v1
- run:
name: "Build Binaryen"
command: |
CC=$PWD/llvm-build/bin/clang make binaryen
- save_cache:
key: binaryen-linux-stretch-v1
paths:
- build/wasm-opt
build-wasi-libc:
steps:
- restore_cache:
@@ -100,6 +142,8 @@ commands:
- install-node
- install-chrome
- install-wasmtime
- hack-ninja-jobs
- build-binaryen-linux
- restore_cache:
keys:
- go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
@@ -141,9 +185,13 @@ commands:
qemu-system-arm \
qemu-user \
gcc-avr \
avr-libc
avr-libc \
ninja-build \
python3
- install-node
- install-wasmtime
- install-cmake
- hack-ninja-jobs
- install-xtensa-toolchain:
variant: "linux-amd64"
- restore_cache:
@@ -159,14 +207,9 @@ commands:
command: |
if [ ! -f llvm-build/lib/liblldELF.a ]
then
# fetch LLVM source
# fetch LLVM source (may only have headers right now)
rm -rf llvm-project
make llvm-source
# install dependencies
sudo apt-get install cmake ninja-build
# hack ninja to use less jobs
echo -e '#!/bin/sh\n/usr/bin/ninja -j3 "$@"' > /go/bin/ninja
chmod +x /go/bin/ninja
# build!
make ASSERT=1 llvm-build
find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
@@ -175,6 +218,7 @@ commands:
key: llvm-build-11-linux-v4-assert
paths:
llvm-build
- build-binaryen-linux-stretch
- run: make ASSERT=1
- build-wasi-libc
- run:
@@ -206,9 +250,13 @@ commands:
qemu-system-arm \
qemu-user \
gcc-avr \
avr-libc
avr-libc \
ninja-build \
python3
- install-node
- install-wasmtime
- install-cmake
- hack-ninja-jobs
- install-xtensa-toolchain:
variant: "linux-amd64"
- restore_cache:
@@ -224,14 +272,9 @@ commands:
command: |
if [ ! -f llvm-build/lib/liblldELF.a ]
then
# fetch LLVM source
# fetch LLVM source (may only have headers right now)
rm -rf llvm-project
make llvm-source
# install dependencies
sudo apt-get install cmake ninja-build
# hack ninja to use less jobs
echo -e '#!/bin/sh\n/usr/bin/ninja -j3 "$@"' > /go/bin/ninja
chmod +x /go/bin/ninja
# build!
make llvm-build
find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
@@ -240,6 +283,7 @@ commands:
key: llvm-build-11-linux-v4-noassert
paths:
llvm-build
- build-binaryen-linux-stretch
- build-wasi-libc
- run:
name: "Test TinyGo"
@@ -283,7 +327,7 @@ commands:
curl https://dl.google.com/go/go1.17.darwin-amd64.tar.gz -o go1.17.darwin-amd64.tar.gz
sudo tar -C /usr/local -xzf go1.17.darwin-amd64.tar.gz
ln -s /usr/local/go/bin/go /usr/local/bin/go
HOMEBREW_NO_AUTO_UPDATE=1 brew install qemu
HOMEBREW_NO_AUTO_UPDATE=1 brew install qemu cmake ninja
- install-xtensa-toolchain:
variant: "macos"
- restore_cache:
@@ -311,11 +355,9 @@ commands:
command: |
if [ ! -f llvm-build/lib/liblldELF.a ]
then
# fetch LLVM source
# fetch LLVM source (may only have headers right now)
rm -rf llvm-project
make llvm-source
# install dependencies
HOMEBREW_NO_AUTO_UPDATE=1 brew install cmake ninja
# build!
make llvm-build
find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
@@ -324,6 +366,20 @@ commands:
key: llvm-build-11-macos-v5
paths:
llvm-build
- restore_cache:
keys:
- binaryen-macos-v1
- run:
name: "Build Binaryen"
command: |
if [ ! -f build/wasm-opt ]
then
make binaryen
fi
- save_cache:
key: binaryen-macos-v1
paths:
- build/wasm-opt
- restore_cache:
keys:
- wasi-libc-sysroot-macos-v4