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| author | Luuk de Gram <luuk@degram.dev> | 2023-06-26 19:10:34 +0200 |
|---|---|---|
| committer | Luuk de Gram <luuk@degram.dev> | 2023-06-26 20:00:58 +0200 |
| commit | 87b8a0567b0f54415aeecd879d3f1a4e12014d22 (patch) | |
| tree | 77cea5728d61fd701009a40e6ac0c70ce282c69a /lib/std/Thread.zig | |
| parent | e06ab1b0107e8a6a1720703a6df0f61f535b5e5a (diff) | |
| download | zig-87b8a0567b0f54415aeecd879d3f1a4e12014d22.tar.gz zig-87b8a0567b0f54415aeecd879d3f1a4e12014d22.zip | |
default to single-threaded for WebAssembly
When targeting WebAssembly, we default to building a single-threaded build
as threads are still experimental. The user however can enable a multi-
threaded build by specifying '-fno-single-threaded'. It's a compile-error
to enable this flag, but not also enable shared-memory.
Diffstat (limited to 'lib/std/Thread.zig')
| -rw-r--r-- | lib/std/Thread.zig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/std/Thread.zig b/lib/std/Thread.zig index b8cc8c8869..99e2feb4cf 100644 --- a/lib/std/Thread.zig +++ b/lib/std/Thread.zig @@ -919,6 +919,10 @@ const WasiThreadImpl = struct { /// Bootstrap procedure, called by the host environment after thread creation. export fn wasi_thread_start(tid: i32, arg: *Instance) void { + if (builtin.single_threaded) { + // ensure function is not analyzed in single-threaded mode + return; + } __set_stack_pointer(arg.thread.memory.ptr + arg.stack_offset); __wasm_init_tls(arg.thread.memory.ptr + arg.tls_offset); @atomicStore(u32, &WasiThreadImpl.tls_thread_id, @intCast(tid), .SeqCst); |