glib-genmarshal - C code marshaller generation utility for GLib closures
glib-genmarshal [options] [files...]
glib-genmarshal is a small utility that generates C code marshallers for callback func-
tions of the GClosure mechanism in the GObject sublibrary of GLib. The marshaller func-
tions have a standard signature, they get passed in the invoking closure, an array of
value structures holding the callback function parameters and a value structure for the
return value of the callback. The marshaller is then responsible to call the respective C
code function of the closure with all the parameters on the stack and to collect its
glib-genmarshal takes a list of marshallers to generate as input. The marshaller list is
either read from standard input or from files passed as additional arguments on the com-
Generate header file contents of the marshallers.
--body Generate C code file contents of the marshallers.
--prefix=string, --prefix string
Specify marshaller prefix. The default prefix is `g_cclosure_marshal'.
Skip source location remarks in generated comments.
Do not use the standard marshallers of the GObject library, and skip gmarshal.h
include directive in generated header files.
Make warnings fatal, that is, exit immediately once a warning occurs.
Print brief help and exit.
Print version and exit.
Marshaller list format
The marshaller lists are processed line by line, a line can contain a comment in the form
# this is a comment
or a marshaller specification of the form
# up to 16 PTYPEs may be present
The RTYPE part specifies the callback's return type and the PTYPEs right to the colon
specify the callback's parameter list, except for the first and the last arguments which
are always pointers.
Currently, the following types are supported:
VOID indicates no return type, or no extra parameters. if VOID is used as the
parameter list, no additional parameters may be present.
BOOLEAN for boolean types (gboolean)
CHAR for signed char types (gchar)
UCHAR for unsigned char types (guchar)
INT for signed integer types (gint)
UINT for unsigned integer types (guint)
LONG for signed long integer types (glong)
ULONG for unsigned long integer types (gulong)
ENUM for enumeration types (gint)
FLAGS for flag enumeration types (guint)
FLOAT for single-precision float types (gfloat)
DOUBLE for double-precision float types (gdouble)
STRING for string types (gchar*)
BOXED for boxed (anonymous but reference counted) types (GBoxed*)
PARAM for GParamSpec or derived types (GParamSpec*)
POINTER for anonymous pointer types (gpointer)
OBJECT for GObject or derived types (GObject*)
NONE deprecated alias for VOID
BOOL deprecated alias for BOOLEAN
To generate marshallers for the following callback functions:
void foo (gpointer data1,
void bar (gpointer data1,
gfloat baz (gpointer data1,
The marshaller list has to look like this:
The generated marshallers have the arguments encoded in their function name. For this par-
ticular list, they are g_cclosure_marshal_VOID__VOID(), g_cclosure_marshal_VOID__INT(),
They can be used directly for GClosures or be passed in as the GSignalCMarshaller c_mar-
shaller; argument upon creation of signals:
GClosure *cc_foo, *cc_bar, *cc_baz;
cc_foo = g_cclosure_new (NULL, foo, NULL);
g_closure_set_marshal (cc_foo, g_cclosure_marshal_VOID__VOID);
cc_bar = g_cclosure_new (NULL, bar, NULL);
g_closure_set_marshal (cc_bar, g_cclosure_marshal_VOID__INT);
cc_baz = g_cclosure_new (NULL, baz, NULL);
g_closure_set_marshal (cc_baz, g_cclosure_marshal_FLOAT__BOOLEAN_UCHAR);
None known yet.
glib-genmarshal has been written by Tim Janik <email@example.com>.
This manual page was provided by Tim Janik <firstname.lastname@example.org>.
18 Oct 2000 GLIB-GENMARSHAL(1)