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internal/task: use -stack-size flag when starting a new thread

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Found this bug while trying to use the upstream testing package instead
of our own. The io/fs package wasn't passing, because the test was run
in a separate goroutine (and therefore a separate thread, with its own
stack) instead of all in the same thread with our own stack
creation/switching implementation.
This commit is contained in:
Ayke van Laethem
2025-08-04 11:39:13 +02:00
committed by Ron Evans
parent 1dbc6c83c4
commit a38829c692
2 changed files with 8 additions and 4 deletions
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src/internal/task/task_threads.go
+2 -2
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@@ -109,7 +109,7 @@ func start(fn uintptr, args unsafe.Pointer, stackSize uintptr) {
// and the stop-the-world GC won't see threads that haven't started yet or
// are not fully started yet.
activeTaskLock.Lock()
errCode := tinygo_task_start(fn, args, t, &t.state.thread, &t.state.stackTop)
errCode := tinygo_task_start(fn, args, t, &t.state.thread, &t.state.stackTop, stackSize)
if errCode != 0 {
runtimePanic("could not start thread")
}
@@ -266,7 +266,7 @@ func tinygo_task_init(t *Task, thread *threadID, numCPU *int32)
// Here same as for tinygo_task_init.
//
//go:linkname tinygo_task_start tinygo_task_start
func tinygo_task_start(fn uintptr, args unsafe.Pointer, t *Task, thread *threadID, stackTop *uintptr) int32
func tinygo_task_start(fn uintptr, args unsafe.Pointer, t *Task, thread *threadID, stackTop *uintptr, stackSize uintptr) int32
// Pause the thread by sending it a signal.
//