add std.Thread.Pool.spawnWg

This function accepts a WaitGroup parameter and manages the reference
counting therein. It also is infallible.

The existing `spawn` function is still handy when the job wants to
further schedule more tasks.

1 files changed, 3 insertions, 2 deletions

diff --git a/src/main.zig b/src/main.zig
index 454559954e..d18d085c19 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -5109,8 +5109,9 @@ fn cmdBuild(gpa: Allocator, arena: Allocator, args: []const []const u8) !void {
                     &fetch,
                 );
 
-                job_queue.wait_group.start();
-                try job_queue.thread_pool.spawn(Package.Fetch.workerRun, .{ &fetch, "root" });
+                job_queue.thread_pool.spawnWg(&job_queue.wait_group, Package.Fetch.workerRun, .{
+                    &fetch, "root",
+                });
                 job_queue.wait_group.wait();
 
                 try job_queue.consolidateErrors();