zig

commit 486a774e5fa079c4caba334f311ee32b54272f1f (tree)
parent 4170f3f77f23bca52a2a9b24d1a249fae35c04ac
Author: Isaac Freund <ifreund@ifreund.xyz>
Date:   Wed,  9 Sep 2020 19:51:59 +0200

std: add option to use single-threaded event loop

std.event.Loop does not yet work in single threaded builds. However,
using evented io on a single thread can be very convenient. This commit
allows settind @import("root").event_loop_mode to .single_threaded
in order to allow this without reimplementing the startup code in
start.zig

Diffstat:
M
lib/std/event/loop.zig
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/std/event/loop.zig b/lib/std/event/loop.zig
@@ -112,7 +112,8 @@ pub const Loop = struct {
     /// have the correct pointer value.
     /// https://github.com/ziglang/zig/issues/2761 and https://github.com/ziglang/zig/issues/2765
     pub fn init(self: *Loop) !void {
-        if (builtin.single_threaded) {
+        if (builtin.single_threaded
+            or (@hasDecl(root, "event_loop_mode") and root.event_loop_mode == .single_threaded)) {
             return self.initSingleThreaded();
         } else {
             return self.initMultiThreaded();