func initAndLock(initsigs bool) *Lock {
// Lock the current goroutine to the current OS thread, until we have
// released the GIL (as CPython uses per-thread state)
runtime.LockOSThread()
// Initialize the default Python interpreter
if initsigs {
C.Py_InitializeEx(1)
} else {
C.Py_InitializeEx(0)
}
// Enable Python thread support, and then immediately release the GIL (and
// thus "deativate" and per-thread state associated with the current thread
C.PyEval_InitThreads()
C.PyEval_SaveThread()
// We can now unlock the current goroutine from the current OS thread, as
// there is no active per-thread state
runtime.UnlockOSThread()
// Now that Python is setup, we can return a locked Lock, ready for the
// calling code to use
return NewLock()
}
func InitializeEx(initsigs bool) {
if initsigs {
C.Py_InitializeEx(1)
} else {
C.Py_InitializeEx(0)
}
}
func InitializeEx(initsigs bool) {
if initsigs {
panic("Python signal handlers can not be enabled. See https://code.google.com/p/go/issues/detail?id=5287 for details")
} else {
C.Py_InitializeEx(0)
}
}
func threadInit() (defaultThreadState *C.PyThreadState) {
initLock.Lock()
defer initLock.Unlock()
if !initialized {
C.Py_InitializeEx(0)
C.PyEval_InitThreads()
C.PySys_SetArgvEx(0, nil, 0)
pyEmptyTuple = C.PyTuple_New(0)
falseObject = &object{C.False_INCREF()}
trueObject = &object{C.True_INCREF()}
defaultThreadState = C.PyEval_SaveThread()
initialized = true
}
return
}