static int runtime_init_done;

// pthread_g is a pthread specific key, for storing the g that binded to the C thread.
// The registered pthread_key_destructor will dropm, when the pthread-specified value g is not NULL,
// while a C thread is exiting.
static pthread_key_t pthread_g;
static void pthread_key_destructor(void* g);
uintptr_t x_cgo_pthread_key_created;
void (*x_crosscall2_ptr)(void (*fn)(void *), void *, int, size_t);

func set_crosscall2()

//go:linkname _set_crosscall2 runtime.set_crosscall2
var _set_crosscall2 = set_crosscall2

// Store the g into the thread-specific value.
// So that pthread_key_destructor will dropm when the thread is exiting.

//go:cgo_import_static x_cgo_bindm
//go:linkname x_cgo_bindm x_cgo_bindm
//go:linkname _cgo_bindm _cgo_bindm
var x_cgo_bindm byte
var _cgo_bindm = &x_cgo_bindm

// to register a thread-exit-time destructor.
// We are here setting the thread-specific value of the pthread key, to enable the destructor.
// So that the pthread_key_destructor would dropm while the C thread is exiting.
//
// And the saved g will be used in pthread_key_destructor,
// since the g stored in the TLS by Go might be cleared in some platforms,
// before the destructor invoked, so, we restore g by the stored g, before dropm.
//