GLIB-GENMARSHAL

GLIB-GENMARSHAL

NAME SYNOPSIS DESCRIPTION INVOCATION EXAMPLE SEE ALSO BUGS AUTHOR

NAME

glib-genmarshal - C code marshaller generation utility for GLib closures

SYNOPSIS

glib-genmarshal [''options''? [''files...''?

DESCRIPTION

glib-genmarshal is a small utility that generates C code marshallers for callback functions of the GClosure mechanism in the GObject sublibrary of GLib. The marshaller functions 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 return value.

INVOCATION

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 command line.

Options

--header

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

Skip source location remarks in generated comments.

--nostdinc

Do not use the standard GRuntime marshallers, and skip gmarshal.h include directive in generated header files.

--g-fatal-warnings

Make warnings fatal, that is, exit immediately once a warning occurs.

-h, --help

Print brief help and exit.

-v, --version

Print version and exit.

Marshaller list format

The marshaller lists are processed line by line, a line can contain a comment in the form of

1. this is a comment

or a marshaller specification of the form

RTYPE:PTYPE

RTYPE:PTYPE,PTYPE

RTYPE:PTYPE,PTYPE,PTYPE

1. 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.

Parameter types

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

EXAMPLE

To generate marshallers for the following callback functions:

void foo (gpointer data1, gpointer data2); void bar (gpointer data1, gint param1, gpointer data2); gfloat baz (gpointer data1, gboolean param1, guchar param2, gpointer data2);

The marshaller list has to look like this:

VOID:VOID VOID:INT FLOAT:BOOLEAN,UCHAR

The generated marshallers have the arguments encoded in their function name. For this particular list, they are g_cclosure_marshal_VOIDVOID(), g_cclosure_marshal_VOIDINT(), g_cclosure_marshal_FLOAT__BOOLEAN_UCHAR().

They can be used directly for GClosures or be passed in as the GSignalCMarshaller c_marshaller; 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_VOIDVOID); cc_bar = g_cclosure_new (NULL, bar, NULL); g_closure_set_marshal (cc_bar, g_cclosure_marshal_VOIDINT); cc_baz = g_cclosure_new (NULL, baz, NULL); g_closure_set_marshal (cc_baz, g_cclosure_marshal_FLOAT__BOOLEAN_UCHAR);

SEE ALSO

__glib-mkenums(1)?__

BUGS

None known yet.

AUTHOR

glib-genmarshal has been written by Tim Janik __

This manual page was provided by Tim Janik