Skip to content

Use mimalloc as default memory allocator on client #187

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
TheRealMorgenfrue wants to merge 3 commits into
base: main
Choose a base branch
from
Draft

Use mimalloc as default memory allocator on client #187

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
816062d
Restructure in preparation for using mimalloc with different targets
TheRealMorgenfrue Feb 23, 2026
08a37ca
Move mimalloc object file to /target
TheRealMorgenfrue Feb 23, 2026
976cdbe
Use wasm-ld as linker for wasm32
TheRealMorgenfrue Feb 23, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 2 additions & 1 deletion .cargo/config.toml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,7 @@
"-Clinker-plugin-lto",
"-Clink-arg=-fuse-ld=mold",
"-Clink-arg=-flto",
"-Zpre-link-args=link_libs/mimalloc.o",
"-Zpre-link-args=target/link_libs/mimalloc.o",
]


Expand All @@ -71,6 +71,7 @@

# Frontend of program
[target.wasm32-unknown-unknown]
linker="wasm-ld"
rustflags=[
"-Clink-arg=--max-memory=4294967296",
"-Ctarget-feature=+atomics,+simd128",
Expand Down
42 changes: 31 additions & 11 deletions build_mimalloc.sh
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,30 +9,50 @@ set -eu
# If none is supplied, use the default "2.2.7".
MIMALLOC_VERSION=${1:-2.2.7}

# Fetch mimalloc source files
curl -f -L --retry 5 https://github.com/microsoft/mimalloc/archive/refs/tags/v$MIMALLOC_VERSION.tar.gz | tar xz
ROOT="target"
MI_PATH="$ROOT/mimalloc-$MIMALLOC_VERSION"
OUT_PATH="$MI_PATH/out"
OBJECT="mimalloc.o"
OUT_OBJECT="$OUT_PATH/$OBJECT"
LINK_LIBS="$ROOT/link_libs"

cd mimalloc-$MIMALLOC_VERSION

mkdir out
if [[ -e $OUT_OBJECT ]]; then
echo "Mimalloc v$MIMALLOC_VERSION already installed"
exit 0
fi

mkdir -p "$ROOT"

if [[ ! -d "$MI_PATH" ]]; then
cd "$ROOT"

# Fetch mimalloc source files
echo "Downloading mimalloc v$MIMALLOC_VERSION source files"
curl -f -L --retry 5 https://github.com/microsoft/mimalloc/archive/refs/tags/v$MIMALLOC_VERSION.tar.gz | tar xz

cd ..
fi


mkdir -p "$OUT_PATH"

# Create mimalloc build files with the following settings
cmake -Bout -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=clang \
cmake -B"$OUT_PATH" -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=clang \
-DMI_SECURE=OFF \
-DMI_BUILD_OBJECT=ON \
-DMI_BUILD_TESTS=OFF \
-DMI_DEBUG_FULL=OFF \
-DMI_LIBC_MUSL=ON \
-G Ninja \
.
"$MI_PATH"

# Build mimalloc
cmake --build out

cd ..
cmake --build "$OUT_PATH"

# Create directory if it doesn't already exist
mkdir -p link_libs
mkdir -p "$LINK_LIBS"

# Create a copy of mimalloc. Used to prelink mimalloc in .cargo/config.toml
cp -f mimalloc-$MIMALLOC_VERSION/out/mimalloc.o link_libs/mimalloc.o
echo "Copying $OUT_OBJECT --> $LINK_LIBS/$OBJECT"
cp -f "$OUT_OBJECT" $LINK_LIBS/$OBJECT