wasmtime-cli 45.0.0

Command-line interface for Wasmtime
Documentation 
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;;! component_model_threading = true

(component definition $Tester
  (core module $Memory
    (table (export "t") 1 funcref)
  )
  (core instance $memory (instantiate $Memory))

  (core type $ft (func (param i32)))
  (core func $thread.new-indirect (canon thread.new-indirect $ft (table $memory "t")))
  (core func $thread.suspend-to-suspended (canon thread.suspend-to-suspended))
  (core func $thread.suspend (canon thread.suspend))
  (core func $thread.unsuspend (canon thread.unsuspend))
  (core func $thread.yield-to-suspended (canon thread.yield-to-suspended))

  (core module $DM
    (import "" "thread.new-indirect" (func $thread.new-indirect (param i32 i32) (result i32)))
    (import "" "thread.suspend-to-suspended" (func $thread.suspend-to-suspended (param i32) (result i32)))
    (import "" "thread.suspend" (func $thread.suspend (result i32)))
    (import "" "thread.unsuspend" (func $thread.unsuspend (param i32)))
    (import "" "thread.yield-to-suspended" (func $thread.yield-to-suspended (param i32) (result i32)))

    (func (export "noop"))
    (func (export "trap-calling-thread-new-indirect") (call $thread.new-indirect (i32.const 0) (i32.const 0)) drop)
    (func (export "trap-calling-thread-suspend-to-suspended") (call $thread.suspend-to-suspended (i32.const 0)) drop)
    (func (export "trap-calling-thread-suspend") (call $thread.suspend) drop)
    (func (export "trap-calling-thread-unsuspend") (call $thread.unsuspend (i32.const 0)))
    (func (export "trap-calling-thread-yield-to-suspended") (call $thread.yield-to-suspended (i32.const 0)) drop)
  )
  (core instance $dm (instantiate $DM (with "" (instance
    (export "thread.new-indirect" (func $thread.new-indirect))
    (export "thread.suspend-to-suspended" (func $thread.suspend-to-suspended))
    (export "thread.suspend" (func $thread.suspend))
    (export "thread.unsuspend" (func $thread.unsuspend))
    (export "thread.yield-to-suspended" (func $thread.yield-to-suspended))
  ))))
  (func (export "trap-calling-thread-new-indirect")
    (canon lift (core func $dm "noop")
      (post-return (func $dm "trap-calling-thread-new-indirect"))))
  (func (export "trap-calling-thread-suspend-to-suspended")
    (canon lift (core func $dm "noop")
      (post-return (func $dm "trap-calling-thread-suspend-to-suspended"))))
  (func (export "trap-calling-thread-suspend")
    (canon lift (core func $dm "noop")
      (post-return (func $dm "trap-calling-thread-suspend"))))
  (func (export "trap-calling-thread-unsuspend")
    (canon lift (core func $dm "noop")
      (post-return (func $dm "trap-calling-thread-unsuspend"))))
  (func (export "trap-calling-thread-yield-to-suspended")
    (canon lift (core func $dm "noop")
      (post-return (func $dm "trap-calling-thread-yield-to-suspended"))))
)

(component instance $i0 $Tester)
(assert_trap (invoke "trap-calling-thread-new-indirect") "cannot leave component instance")
(component instance $i1 $Tester)
(assert_trap (invoke "trap-calling-thread-suspend-to-suspended") "cannot leave component instance")
(component instance $i2 $Tester)
(assert_trap (invoke "trap-calling-thread-suspend") "cannot leave component instance")
(component instance $i3 $Tester)
(assert_trap (invoke "trap-calling-thread-unsuspend") "cannot leave component instance")
(component instance $i4 $Tester)
(assert_trap (invoke "trap-calling-thread-yield-to-suspended") "cannot leave component instance")