interface.c File Reference

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Description

Implementation: handling of interfaces (extension points).

From a programmers perspective interfaces only need to be opened when needed and closed when finished with them. There is no difference if the interface is internally provided by the core or provided by an external plugin. Interfaces can be opened multiple times and cross reference each other.

Definition in file interface.c.

#include "include/logging.h"
#include "lib/recmutex.h"
#include "lib/safeclib.h"
#include "common/plugin.h"
#include "common/interface.h"
#include "common/interfaceregistry.h"
#include <nobug.h>

Functions
static void	depwalk (LumieraInterfacenode self, LumieraInterfacenode *stack)
	LUMIERA_EXPORT (LUMIERA_INTERFACE_DEFINE(lumieraorg_interface, 0, lumieraorg_interface, NULL, NULL, NULL, LUMIERA_INTERFACE_MAP(open, lumiera_interface_open), LUMIERA_INTERFACE_MAP(close, lumiera_interface_close), LUMIERA_INTERFACE_MAP(version, lumiera_interface_version),))
	Definition of 'the mother of all interfaces' since this interface is singleton and required for any component to open any other interface this should get a very stable interface and likely never change.
void	lumiera_interface_close (LumieraInterface self)
	Close an interface after use. More...
void	lumiera_interface_destroy (void)
	deregistering implementations of the above interface
LumieraInterface	lumiera_interface_open (const char *interface, unsigned version, size_t minminorversion, const char *name)
	Open an interface by version and name. More...
static LumieraInterfacenode	lumiera_interface_open_interfacenode (LumieraInterfacenode self)
unsigned	lumiera_interface_version (LumieraInterface self, const char *iname)
	Runtime check for interface type and version. More...
static void	lumiera_interfacenode_close (LumieraInterfacenode self)
static void	push_dependency (LumieraInterfacenode parent, LumieraInterfacenode child)

Variables
LumieraInterface	lumiera_interface_interface
	the mother of all interfaces

Function Documentation

lumiera_interface_open()

LumieraInterface lumiera_interface_open	(	const char *	interface,
		unsigned	version,
		size_t	minminorversion,
		const char *	name
	)

Open an interface by version and name.

Looks up the requested interface, possibly loading it from a plugin.

Parameters

interface	name of the interface definition
version	major version of the interface definition
minminorversion	required minor version (structure size)
name	name of the interface implementation

Returns

the queried interface handle on success, else NULL

Definition at line 58 of file interface.c.

lumiera_interface_close()

void lumiera_interface_close

(

LumieraInterface

self

)

Close an interface after use.

Parameters

self	interface to be closed consider 'self' to be invalidated after this call

Definition at line 235 of file interface.c.

References LUMIERA_RECMUTEX_SECTION.

Referenced by lumiera_interface_destroy().

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lumiera_interface_version()

unsigned lumiera_interface_version	(	LumieraInterface	self,
		const char *	iname
	)

Runtime check for interface type and version.

Parameters

self	interface to check
iname	name of the interface

Returns

version of the interface or ~0 (-1) if iname doesn't match the requested name

Definition at line 247 of file interface.c.