Add a test for jl_get_num_stack_mappings

JuliaLang · Sep 20, 2023 · ab68148 · ab68148
1 parent 3a88b66
commit ab68148
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/test/threads.jl b/test/threads.jl
@@ -331,3 +331,10 @@ end
 @testset "rand_ptls underflow" begin
     @test Base.Partr.cong(UInt32(0)) == 0
 end
+
+@testset "num_stack_mappings metric" begin
+    @test @ccall(jl_get_num_stack_mappings()::Cint) >= 1
+    # There must be at least two: one for the root test task and one for the async task:
+    @test fetch(@async(@ccall(jl_get_num_stack_mappings()::Cint))) >= 2
+end
+