Teach single binaries about SIGHUP.

Make sure kore_onload() and kore_preload() can be called
either in native or python runtime.

includes/kore.h

@@ -216,7 +216,7 @@ struct kore_runtime {
 	int	(*http_request)(void *, struct http_request *);
 	int	(*validator)(void *, struct http_request *, void *);
 #endif
-	int	(*execute)(void *, void *);
+	void	(*execute)(void *);
 	int	(*onload)(void *, int);
 	void	(*connect)(void *, struct connection *);
 };
@@ -618,6 +618,7 @@ void		kore_module_handler_free(struct kore_module_handle *);
 
 struct kore_runtime_call	*kore_runtime_getcall(const char *);
 
+void	kore_runtime_execute(struct kore_runtime_call *);
 int	kore_runtime_onload(struct kore_runtime_call *, int);
 void	kore_runtime_connect(struct kore_runtime_call *, struct connection *);
 #if !defined(KORE_NO_HTTP)

src/kore.c

@@ -434,7 +434,7 @@ kore_server_start(void)
 #if defined(KORE_SINGLE_BINARY)
 	rcall = kore_runtime_getcall("kore_preload");
 	if (rcall != NULL) {
-		rcall->runtime->execute(rcall->addr, NULL);
+		kore_runtime_execute(rcall);
 		kore_free(rcall);
 	}
 #endif
@@ -458,10 +458,8 @@ kore_server_start(void)
 		if (sig_recv != 0) {
 			switch (sig_recv) {
 			case SIGHUP:
-#if !defined(KORE_SINGLE_BINARY)
 				kore_worker_dispatch_signal(sig_recv);
 				kore_module_reload(0);
-#endif
 				break;
 			case SIGINT:
 			case SIGQUIT:

src/python.c

@@ -46,6 +46,7 @@ static void	python_push_type(const char *, PyObject *, PyTypeObject *);
 static int	python_runtime_http_request(void *, struct http_request *);
 static int	python_runtime_validator(void *, struct http_request *, void *);
 #endif
+static void	python_runtime_execute(void *);
 static int	python_runtime_onload(void *, int);
 static void	python_runtime_connect(void *, struct connection *);
 
@@ -73,7 +74,8 @@ struct kore_runtime kore_python_runtime = {
 	.validator = python_runtime_validator,
 #endif
 	.onload = python_runtime_onload,
-	.connect = python_runtime_connect
+	.connect = python_runtime_connect,
+	.execute = python_runtime_execute
 };
 
 static struct {
@@ -339,6 +341,28 @@ python_runtime_validator(void *addr, struct http_request *req, void *data)
 }
 #endif
 
+static void
+python_runtime_execute(void *addr)
+{
+	PyObject	*callable, *args, *pyret;
+
+	callable = (PyObject *)addr;
+
+	if ((args = PyTuple_New(0)) == NULL)
+		fatal("python_runtime_execute: PyTuple_New failed");
+
+	PyErr_Clear();
+	pyret = PyObject_Call(callable, args, NULL);
+	Py_DECREF(args);
+
+	if (pyret == NULL) {
+		python_log_error("python_runtime_execute");
+		fatal("failed to execute python call");
+	}
+
+	Py_DECREF(pyret);
+}
+
 static int
 python_runtime_onload(void *addr, int action)
 {

src/runtime.c

@@ -26,6 +26,7 @@
 #include "python_api.h"
 #endif
 
+static void	native_runtime_execute(void *);
 static int	native_runtime_onload(void *, int);
 static void	native_runtime_connect(void *, struct connection *);
 #if !defined(KORE_NO_HTTP)
@@ -40,7 +41,8 @@ struct kore_runtime kore_native_runtime = {
 	.validator = native_runtime_validator,
 #endif
 	.onload = native_runtime_onload,
-	.connect = native_runtime_connect
+	.connect = native_runtime_connect,
+	.execute = native_runtime_execute
 };
 
 struct kore_runtime_call *
@@ -61,6 +63,12 @@ kore_runtime_getcall(const char *symbol)
 	return (rcall);
 }
 
+void
+kore_runtime_execute(struct kore_runtime_call *rcall)
+{
+	rcall->runtime->execute(rcall->addr);
+}
+
 int
 kore_runtime_onload(struct kore_runtime_call *rcall, int action)
 {
@@ -89,6 +97,15 @@ kore_runtime_validator(struct kore_runtime_call *rcall,
 }
 #endif
 
+static void
+native_runtime_execute(void *addr)
+{
+	void	(*cb)(void);
+
+	*(void **)&(cb) = addr;
+	cb();
+}
+
 static void
 native_runtime_connect(void *addr, struct connection *c)
 {

src/worker.c

@@ -338,20 +338,17 @@ kore_worker_entry(struct kore_worker *kw)
 #if defined(KORE_SINGLE_BINARY)
 	rcall = kore_runtime_getcall("kore_onload");
 	if (rcall != NULL) {
-		rcall->runtime->execute(rcall->addr, NULL);
+		kore_runtime_execute(rcall);
 		kore_free(rcall);
 	}
-#else
-	kore_module_onload();
 #endif
+	kore_module_onload();
 
 	for (;;) {
 		if (sig_recv != 0) {
 			switch (sig_recv) {
 			case SIGHUP:
-#if !defined(KORE_SINGLE_BINARY)
 				kore_module_reload(1);
-#endif
 				break;
 			case SIGQUIT:
 			case SIGINT: