#include "_cgo_export.h"

void lockOSThreadC(void) {
	lockOSThreadCallback();
}

void issue7978c(uint32_t *sync) {
	while(__atomic_load_n(sync, __ATOMIC_SEQ_CST) != 0)
		;
	__atomic_add_fetch(sync, 1, __ATOMIC_SEQ_CST);
	while(__atomic_load_n(sync, __ATOMIC_SEQ_CST) != 2)
		;
	issue7978cb();
	__atomic_add_fetch(sync, 1, __ATOMIC_SEQ_CST);
	while(__atomic_load_n(sync, __ATOMIC_SEQ_CST) != 6)
		;
}

	}
}

//export issue7978cb
func issue7978cb() {
	// Force a stack growth from the callback to put extra
	// pressure on the runtime. See issue #17785.
	growStack(64)
	issue7978wait(3, 4)
}

func growStack(n int) int {
	var buf [128]int
	if n == 0 {
		return 0
	}
	return buf[growStack(n-1)]
}

func issue7978go() {
	C.issue7978c((*C.uint32_t)(&issue7978sync))