debug: properly set thread names on macOS

1 files changed, 8 insertions, 0 deletions

diff --git a/src/termio/Thread.zig b/src/termio/Thread.zig
index d8018341d..35da3c2d2 100644
--- a/src/termio/Thread.zig
+++ b/src/termio/Thread.zig
@@ -16,6 +16,7 @@ const ArenaAllocator = std.heap.ArenaAllocator;
 const builtin = @import("builtin");
 const xev = @import("../global.zig").xev;
 const crash = @import("../crash/main.zig");
+const internal_os = @import("../os/main.zig");
 const termio = @import("../termio.zig");
 const renderer = @import("../renderer.zig");
 const BlockingQueue = @import("../datastruct/main.zig").BlockingQueue;
@@ -202,6 +203,13 @@ pub fn threadMain(self: *Thread, io: *termio.Termio) void {
 fn threadMain_(self: *Thread, io: *termio.Termio) !void {
     defer log.debug("IO thread exited", .{});
 
+    // Right now, on Darwin, `std.Thread.setName` can only name the current
+    // thread, and we have no way to get the current thread from within it,
+    // so instead we use this code to name the thread instead.
+    if (builtin.os.tag.isDarwin()) {
+        internal_os.macos.pthread_setname_np(&"io".*);
+    }
+
     // Setup our crash metadata
     crash.sentry.thread_state = .{
         .type = .io,