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publically define GSignalInvocationHint structure that gets passed in to

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Fri Oct 27 16:33:41 2000  Tim Janik  <timj@gtk.org>

        * gsignal.[hc]: publically define GSignalInvocationHint structure
        that gets passed in to closure invocations. added signal details.
        renamed GSignalType to GSignalFlags to comply with conventions.
        quite some cleanups and minor fixes. avoid uneccessary handler list
        walks upon invokation of after handlers. relookup handler list for
        restarted emissions. preliminary abort normal handler invokation if
        after handler is encountered.

        * glib-genmarshal.c:
        * gclosure.[hc]: moved invocation_hint to the end of the
        g_closure_invoke() arguments as sugegsted by kenelson.
        also made it a gpointer to be more generic. the invocation_hint
        is a caller specific thing that can be used to pass additional
        data in to closure invocations as documented with the caller
        invoking the closure.
This commit is contained in:
Tim Janik 2000-10-27 16:48:11 +00:00 committed by Tim Janik
parent e6dfecacc0
commit 830d808c5c
8 changed files with 235 additions and 124 deletions
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1
docs/reference/glib/tmpl/macros_misc.sgml
View File

@ -66,6 +66,7 @@ only one statement is expected by the compiler.
Portable way to copy <type>va_list</type> variables.
</para>
<!-- # Unused Parameters # -->
@ap1: the <type>va_list</type> variable to place a copy of @ap2 in.
@ap2: a <type>va_list</type>.

22
docs/reference/glib/tmpl/misc_utils.sgml
View File

@ -141,17 +141,6 @@ path it returns NULL.
@Returns: a pointer into @file_name after the root component.
<!-- ##### FUNCTION g_path_get_dirname ##### -->
<para>
Gets the directory components of a file name. If the file name has no
directory components "." is returned. The returned string should be
freed when no longer needed.
</para>
@file_name: the name of the file.
@Returns: the directory components of the file.
<!-- ##### FUNCTION g_path_get_basename ##### -->
<para>
Gets the name of the file without any leading directory components.
@ -170,6 +159,17 @@ into the argument.
@Returns: the name of the file without any leading directory components.
<!-- ##### FUNCTION g_path_get_dirname ##### -->
<para>
Gets the directory components of a file name. If the file name has no
directory components "." is returned. The returned string should be
freed when no longer needed.
</para>
@file_name: the name of the file.
@Returns: the directory components of the file.
<!-- ##### FUNCTION g_filename_to_utf8 ##### -->
<para>

18
gobject/ChangeLog
View File

@ -1,3 +1,21 @@
Fri Oct 27 16:33:41 2000 Tim Janik <timj@gtk.org>
* gsignal.[hc]: publically define GSignalInvocationHint structure
that gets passed in to closure invocations. added signal details.
renamed GSignalType to GSignalFlags to comply with conventions.
quite some cleanups and minor fixes. avoid uneccessary handler list
walks upon invokation of after handlers. relookup handler list for
restarted emissions. preliminary abort normal handler invokation if
after handler is encountered.
* glib-genmarshal.c:
* gclosure.[hc]: moved invocation_hint to the end of the
g_closure_invoke() arguments as sugegsted by kenelson.
also made it a gpointer to be more generic. the invocation_hint
is a caller specific thing that can be used to pass additional
data in to closure invocations as documented with the caller
invoking the closure.
Fri Oct 27 05:35:14 2000 Tim Janik <timj@gtk.org>
* gobject.c (g_object_watch_closure): fixed realloc bug, reported

26
gobject/gclosure.c
View File

@ -19,6 +19,7 @@
#include "gclosure.h"
#include "gvalue.h"
#include <string.h>
/* FIXME: need caching allocators
@ -387,10 +388,10 @@ g_closure_remove_fnotify (GClosure *closure,
void
g_closure_invoke (GClosure *closure,
guint invocation_hint,
GValue /*out*/ *return_value,
guint n_param_values,
const GValue *param_values)
const GValue *param_values,
gpointer invocation_hint)
{
g_return_if_fail (closure != NULL);
g_return_if_fail (closure->marshal || closure->meta_marshal);
@ -415,9 +416,10 @@ g_closure_invoke (GClosure *closure,
}
if (!in_marshal)
closure_invoke_notifiers (closure, PRE_NOTIFY);
marshal (closure, invocation_hint,
marshal (closure,
return_value,
n_param_values, param_values,
invocation_hint,
marshal_data);
if (!in_marshal)
closure_invoke_notifiers (closure, POST_NOTIFY);
@ -477,10 +479,10 @@ g_cclosure_new_swap (GCallback callback_func,
static void
g_type_class_meta_marshal (GClosure *closure,
guint invocation_hint,
GValue /*out*/ *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
GTypeClass *class;
@ -491,16 +493,19 @@ g_type_class_meta_marshal (GClosure *closure,
class = G_TYPE_INSTANCE_GET_CLASS (g_value_get_as_pointer (param_values + 0), itype, GTypeClass);
callback = G_STRUCT_MEMBER (gpointer, class, offset);
if (callback)
closure->marshal (closure, invocation_hint, return_value,
n_param_values, param_values, callback);
closure->marshal (closure,
return_value,
n_param_values, param_values,
invocation_hint,
callback);
}
static void
g_type_iface_meta_marshal (GClosure *closure,
guint invocation_hint,
GValue /*out*/ *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data)
{
GTypeClass *class;
@ -511,8 +516,11 @@ g_type_iface_meta_marshal (GClosure *closure,
class = G_TYPE_INSTANCE_GET_INTERFACE (g_value_get_as_pointer (param_values + 0), itype, GTypeClass);
callback = G_STRUCT_MEMBER (gpointer, class, offset);
if (callback)
closure->marshal (closure, invocation_hint, return_value,
n_param_values, param_values, callback);
closure->marshal (closure,
return_value,
n_param_values, param_values,
invocation_hint,
callback);
}
GClosure*

8
gobject/gclosure.h
View File

@ -41,10 +41,10 @@ typedef gpointer GCallback;
typedef void (*GClosureNotify) (gpointer data,
GClosure *closure);
typedef void (*GClosureMarshal) (GClosure *closure,
guint invocation_hint,
GValue *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
typedef struct _GCClosure GCClosure;
@ -69,10 +69,10 @@ struct _GClosure
/*< public >*/ guint is_invalid : 1;
/*< private >*/ void (*marshal) (GClosure *closure,
guint invocation_hint,
GValue /*out*/ *return_value,
guint n_param_values,
const GValue *param_values,
gpointer invocation_hint,
gpointer marshal_data);
/*< protected >*/ gpointer data;
@ -139,10 +139,10 @@ void g_closure_set_meta_marshal (GClosure *closure,
GClosureMarshal meta_marshal);
void g_closure_invalidate (GClosure *closure);
void g_closure_invoke (GClosure *closure,
guint invocation_hint,
GValue /*out*/ *return_value,
guint n_param_values,
const GValue *param_values);
const GValue *param_values,
gpointer invocation_hint);
/*

4
gobject/glib-genmarshal.c
View File

@ -248,10 +248,10 @@ generate_marshal (const gchar *signame,
ind = fprintf (fout, "extern void ");
ind += fprintf (fout, "%s_%s (", marshaller_prefix, signame);
fprintf (fout, "GClosure *closure,\n");
fprintf (fout, "%sguint invocation_hint,\n", indent (ind));
fprintf (fout, "%sGValue *return_value,\n", indent (ind));
fprintf (fout, "%sguint n_param_values,\n", indent (ind));
fprintf (fout, "%sconst GValue *param_values,\n", indent (ind));
fprintf (fout, "%sgpointer invocation_hint,\n", indent (ind));
fprintf (fout, "%sgpointer marshal_data);\n", indent (ind));
}
if (gen_cbody)
@ -260,10 +260,10 @@ generate_marshal (const gchar *signame,
fprintf (fout, "void\n");
ind = fprintf (fout, "%s_%s (", marshaller_prefix, signame);
fprintf (fout, "GClosure *closure,\n");
fprintf (fout, "%sguint invocation_hint,\n", indent (ind));
fprintf (fout, "%sGValue *return_value,\n", indent (ind));
fprintf (fout, "%sguint n_param_values,\n", indent (ind));
fprintf (fout, "%sconst GValue *param_values,\n", indent (ind));
fprintf (fout, "%sgpointer invocation_hint,\n", indent (ind));
fprintf (fout, "%sgpointer marshal_data)\n", indent (ind));
fprintf (fout, "{\n");

216
gobject/gsignal.c
View File

@ -103,6 +103,7 @@ static Handler* handler_lookup (gpointer instance
static Handler* handler_find (gpointer instance,
GSignalMatchType mask,
guint signal_id,
GQuark detail,
GClosure *closure,
gpointer func,
gpointer data);
@ -112,13 +113,17 @@ static inline void handler_unref_R (guint signal_i
Handler *handler);
static inline void emission_push (Emission **emission_list_p,
guint signal_id,
GQuark detail,
gpointer instance,
EmissionState *state_p);
static inline void emission_pop (Emission **emission_list_p);
static inline void emission_pop (Emission **emission_list_p,
EmissionState *state_p);
static inline Emission* emission_find (Emission *emission_list,
guint signal_id,
GQuark detail,
gpointer instance);
static void signal_emit_R (SignalNode *node,
GQuark detail,
gpointer instance,
GValue *return_value,
const GValue *instance_and_params);
@ -155,6 +160,7 @@ struct _Emission
{
Emission *next;
guint signal_id;
GQuark detail;
gpointer instance;
EmissionState *state_p;
};
@ -170,6 +176,7 @@ struct _Handler
guint id;
Handler *next;
Handler *prev;
GQuark detail;
guint ref_count : 16;
#define HANDLER_MAX_REF_COUNT (1 << 16)
guint block_count : 12;
@ -308,6 +315,7 @@ static Handler*
handler_find (gpointer instance,
GSignalMatchType mask,
guint signal_id,
GQuark detail,
GClosure *closure,
gpointer func,
gpointer data)
@ -327,9 +335,10 @@ handler_find (gpointer instance,
mask = ~mask;
for (handler = hlist ? hlist->handlers : NULL; handler; handler = handler->next)
if (((mask & G_SIGNAL_MATCH_CLOSURE) || handler->closure == closure) &&
((mask & G_SIGNAL_MATCH_UNBLOCKED) || handler->block_count == 0) &&
if (((mask & G_SIGNAL_MATCH_DETAIL) || handler->detail == detail) &&
((mask & G_SIGNAL_MATCH_CLOSURE) || handler->closure == closure) &&
((mask & G_SIGNAL_MATCH_DATA) || handler->closure->data == data) &&
((mask & G_SIGNAL_MATCH_UNBLOCKED) || handler->block_count == 0) &&
((mask & G_SIGNAL_MATCH_FUNC) || (handler->closure->marshal == node->c_marshaller &&
handler->closure->meta_marshal == 0 &&
((GCClosure*) handler->closure)->callback == func)))
@ -358,9 +367,10 @@ handler_find (gpointer instance,
}
for (handler = hlist->handlers; handler; handler = handler->next)
if (((mask & G_SIGNAL_MATCH_CLOSURE) || handler->closure == closure) &&
((mask & G_SIGNAL_MATCH_UNBLOCKED) || handler->block_count == 0) &&
if (((mask & G_SIGNAL_MATCH_DETAIL) || handler->detail == detail) &&
((mask & G_SIGNAL_MATCH_CLOSURE) || handler->closure == closure) &&
((mask & G_SIGNAL_MATCH_DATA) || handler->closure->data == data) &&
((mask & G_SIGNAL_MATCH_UNBLOCKED) || handler->block_count == 0) &&
((mask & G_SIGNAL_MATCH_FUNC) || (handler->closure->marshal == node->c_marshaller &&
handler->closure->meta_marshal == 0 &&
((GCClosure*) handler->closure)->callback == func)))
@ -387,6 +397,7 @@ handler_new (gboolean after)
handler->id = handler_id++;
handler->prev = NULL;
handler->next = NULL;
handler->detail = 0;
handler->ref_count = 1;
handler->block_count = 0;
handler->after = after != FALSE;
@ -474,6 +485,7 @@ handler_insert (guint signal_id,
static inline void
emission_push (Emission **emission_list_p,
guint signal_id,
GQuark detail,
gpointer instance,
EmissionState *state_p)
{
@ -482,29 +494,39 @@ emission_push (Emission **emission_list_p,
EMISSION_PRE_ALLOC);
emission->next = *emission_list_p;
emission->signal_id = signal_id;
emission->detail = detail;
emission->instance = instance;
emission->state_p = state_p;
*emission_list_p = emission;
}
static inline void
emission_pop (Emission **emission_list_p)
emission_pop (Emission **emission_list_p,
EmissionState *state_p)
{
Emission *emission = *emission_list_p;
*emission_list_p = emission->next;
Emission **loc = emission_list_p, *emission = *loc;
while (emission->state_p != state_p)
{
loc = &emission->next;
emission = *loc;
}
*loc = emission->next;
g_generic_node_free (&g_emission_ts, emission);
}
static inline Emission*
emission_find (Emission *emission_list,
guint signal_id,
GQuark detail,
gpointer instance)
{
Emission *emission;
for (emission = emission_list; emission; emission = emission->next)
if (emission->instance == instance && emission->signal_id == signal_id)
if (emission->instance == instance &&
emission->signal_id == signal_id &&
emission->detail == detail)
return emission;
return NULL;
}
@ -575,7 +597,8 @@ g_signals_destroy (GType itype)
void
g_signal_stop_emission (gpointer instance,
guint signal_id)
guint signal_id,
GQuark detail)
{
SignalNode *node;
@ -584,10 +607,16 @@ g_signal_stop_emission (gpointer instance,
G_LOCK (g_signal_mutex);
node = LOOKUP_SIGNAL_NODE (signal_id);
if (node && detail && !(node->flags & G_SIGNAL_DETAILED))
{
g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
G_UNLOCK (g_signal_mutex);
return;
}
if (node && g_type_conforms_to (G_TYPE_FROM_INSTANCE (instance), node->itype))
{
Emission *emission_list = node->flags & G_SIGNAL_NO_RECURSE ? g_restart_emissions : g_recursive_emissions;
Emission *emission = emission_find (emission_list, signal_id, instance);
Emission *emission = emission_find (emission_list, signal_id, detail, instance);
if (emission)
{
@ -664,7 +693,7 @@ g_signal_query (guint signal_id,
guint
g_signal_newv (const gchar *signal_name,
GType itype,
GSignalType signal_flags,
GSignalFlags signal_flags,
GClosure *class_closure,
GSignalAccumulator accumulator,
GSignalCMarshaller c_marshaller,
@ -752,12 +781,7 @@ g_signal_newv (const gchar *signal_name,
node->destroyed = FALSE;
/* setup reinitializable portion */
node->flags = signal_flags & (G_SIGNAL_RUN_FIRST |
G_SIGNAL_RUN_LAST |
G_SIGNAL_RUN_CLEANUP |
G_SIGNAL_NO_RECURSE |
G_SIGNAL_ACTION |
G_SIGNAL_NO_HOOKS);
node->flags = signal_flags & G_SIGNAL_FLAGS_MASK;
node->n_params = n_params;
node->param_types = g_memdup (param_types, sizeof (GType) * n_params);
node->return_type = return_type;
@ -817,6 +841,7 @@ signal_destroy_R (SignalNode *signal_node)
guint
g_signal_connect_closure (gpointer instance,
guint signal_id,
GQuark detail,
GClosure *closure,
gboolean after)
{
@ -829,11 +854,18 @@ g_signal_connect_closure (gpointer instance,
G_LOCK (g_signal_mutex);
node = LOOKUP_SIGNAL_NODE (signal_id);
if (node && detail && !(node->flags & G_SIGNAL_DETAILED))
{
g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
G_UNLOCK (g_signal_mutex);
return 0;
}
if (node && g_type_conforms_to (G_TYPE_FROM_INSTANCE (instance), node->itype))
{
Handler *handler = handler_new (after);
handler_id = handler->id;
handler->detail = detail;
handler->closure = g_closure_ref (closure);
handler_insert (signal_id, instance, handler);
if (node->c_marshaller && G_CLOSURE_NEEDS_MARSHAL (closure))
@ -964,6 +996,7 @@ guint
g_signal_handler_find (gpointer instance,
GSignalMatchType mask,
guint signal_id,
GQuark detail,
GClosure *closure,
gpointer func,
gpointer data)
@ -972,9 +1005,10 @@ g_signal_handler_find (gpointer instance,
guint handler_id;
g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), 0);
g_return_val_if_fail ((mask & ~G_SIGNAL_MATCH_MASK) == 0, 0);
G_LOCK (g_signal_mutex);
handler = handler_find (instance, mask, signal_id, closure, func, data);
handler = handler_find (instance, mask, signal_id, detail, closure, func, data);
handler_id = handler ? handler->id : 0;
G_UNLOCK (g_signal_mutex);
@ -984,6 +1018,7 @@ g_signal_handler_find (gpointer instance,
gboolean
g_signal_handler_pending (gpointer instance,
guint signal_id,
GQuark detail,
gboolean may_be_blocked)
{
Handler *handler = NULL;
@ -992,11 +1027,21 @@ g_signal_handler_pending (gpointer instance,
g_return_val_if_fail (signal_id > 0, FALSE);
G_LOCK (g_signal_mutex);
handler = handler_find (instance, G_SIGNAL_MATCH_ID, signal_id, NULL, NULL, NULL);
if (!may_be_blocked)
for (; handler; handler = handler->next)
if (!handler->block_count)
break;
if (detail)
{
SignalNode *node = LOOKUP_SIGNAL_NODE (signal_id);
if (!(node->flags & G_SIGNAL_DETAILED))
{
g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
G_UNLOCK (g_signal_mutex);
return FALSE;
}
}
handler = handler_find (instance,
(G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_DETAIL |
(may_be_blocked ? 0 : G_SIGNAL_MATCH_UNBLOCKED)),
signal_id, detail, NULL, NULL, NULL);
G_UNLOCK (g_signal_mutex);
return handler != NULL;
@ -1005,6 +1050,7 @@ g_signal_handler_pending (gpointer instance,
void
g_signal_emitv (const GValue *instance_and_params,
guint signal_id,
GQuark detail,
GValue *return_value)
{
SignalNode *node;
@ -1024,6 +1070,12 @@ g_signal_emitv (const GValue *instance_and_params,
#ifndef G_DISABLE_CHECKS
if (!node || !g_type_conforms_to (G_TYPE_FROM_INSTANCE (instance), node->itype))
g_warning ("%s: signal id `%u' is invalid for instance `%p'", G_STRLOC, signal_id, instance);
if (detail && !(node->flags & G_SIGNAL_DETAILED))
{
g_warning ("%s: signal id `%u' does not support detail (%u)", G_STRLOC, signal_id, detail);
G_UNLOCK (g_signal_mutex);
return;
}
for (i = 0; i < node->n_params; i++)
if (!G_VALUE_HOLDS (param_values + i, node->param_types[i]))
{
@ -1059,29 +1111,31 @@ g_signal_emitv (const GValue *instance_and_params,
return_value = NULL;
#endif /* !G_DISABLE_CHECKS */
signal_emit_R (node, instance, return_value, instance_and_params);
signal_emit_R (node, detail, instance, return_value, instance_and_params);
G_UNLOCK (g_signal_mutex);
}
static void
signal_emit_R (SignalNode *node,
GQuark detail,
gpointer instance,
GValue *return_value,
const GValue *instance_and_params)
{
EmissionState emission_state = 0;
GSignalAccumulator accumulator;
GSignalInvocationHint ihint;
GClosure *class_closure;
HandlerList *hlist;
Handler *handlers;
Handler *handler_list = NULL;
GValue accu;
gboolean accu_used = FALSE;
guint signal_id = node->signal_id;
if (node->flags & G_SIGNAL_NO_RECURSE)
{
Emission *emission = emission_find (g_restart_emissions, signal_id, instance);
Emission *emission = emission_find (g_restart_emissions, signal_id, detail, instance);
if (emission)
{
@ -1089,6 +1143,8 @@ signal_emit_R (SignalNode *node,
return;
}
}
ihint.signal_id = node->signal_id;
ihint.detail = detail;
accumulator = node->accumulator;
if (accumulator)
{
@ -1097,15 +1153,20 @@ signal_emit_R (SignalNode *node,
G_LOCK (g_signal_mutex);
}
emission_push ((node->flags & G_SIGNAL_NO_RECURSE) ? &g_restart_emissions : &g_recursive_emissions,
signal_id, instance, &emission_state);
signal_id, detail, instance, &emission_state);
class_closure = node->class_closure;
hlist = handler_list_lookup (signal_id, instance);
handlers = hlist ? hlist->handlers : NULL;
if (handlers)
handler_ref (handlers);
EMIT_RESTART:
if (handler_list)
handler_unref_R (signal_id, instance, handler_list);
hlist = handler_list_lookup (signal_id, instance);
handler_list = hlist ? hlist->handlers : NULL;
if (handler_list)
handler_ref (handler_list);
ihint.run_type = G_SIGNAL_RUN_FIRST;
if ((node->flags & G_SIGNAL_RUN_FIRST) && class_closure)
{
emission_state = EMISSION_RUN;
@ -1116,21 +1177,21 @@ signal_emit_R (SignalNode *node,
if (accu_used)
g_value_reset (&accu);
g_closure_invoke (class_closure,
(signal_id << 8) | G_SIGNAL_RUN_FIRST,
&accu,
node->n_params + 1,
instance_and_params);
if (!accumulator (signal_id, return_value, &accu) &&
instance_and_params,
&ihint);
if (!accumulator (&ihint, return_value, &accu) &&
emission_state == EMISSION_RUN)
emission_state = EMISSION_STOP;
accu_used = TRUE;
}
else
g_closure_invoke (class_closure,
(signal_id << 8) | G_SIGNAL_RUN_FIRST,
return_value,
node->n_params + 1,
instance_and_params);
instance_and_params,
&ihint);
G_LOCK (g_signal_mutex);
if (emission_state == EMISSION_STOP)
@ -1151,18 +1212,23 @@ signal_emit_R (SignalNode *node,
goto EMIT_RESTART;
}
if (handlers)
if (handler_list)
{
Handler *handler = handlers;
Handler *handler = handler_list;
emission_state = EMISSION_RUN;
handler_ref (handler);
do
{
Handler *tmp;
if (!handler->after && !handler->block_count)
if (handler->after)
{
handler_unref_R (signal_id, instance, handler_list);
handler_list = handler;
break;
}
else if (!handler->block_count && (!handler->detail || handler->detail == detail))
{
G_UNLOCK (g_signal_mutex);
if (accumulator)
@ -1170,21 +1236,21 @@ signal_emit_R (SignalNode *node,
if (accu_used)
g_value_reset (&accu);
g_closure_invoke (handler->closure,
(signal_id << 8) | G_SIGNAL_RUN_FIRST,
&accu,
node->n_params + 1,
instance_and_params);
if (!accumulator (signal_id, return_value, &accu) &&
instance_and_params,
&ihint);
if (!accumulator (&ihint, return_value, &accu) &&
emission_state == EMISSION_RUN)
emission_state = EMISSION_STOP;
accu_used = TRUE;
}
else
g_closure_invoke (handler->closure,
(signal_id << 8) | G_SIGNAL_RUN_FIRST,
return_value,
node->n_params + 1,
instance_and_params);
instance_and_params,
&ihint);
G_LOCK (g_signal_mutex);
tmp = emission_state == EMISSION_RUN ? handler->next : NULL;
@ -1194,7 +1260,8 @@ signal_emit_R (SignalNode *node,
if (tmp)
handler_ref (tmp);
handler_unref_R (signal_id, instance, handler);
handler_unref_R (signal_id, instance, handler_list);
handler_list = handler;
handler = tmp;
}
while (handler);
@ -1205,6 +1272,8 @@ signal_emit_R (SignalNode *node,
goto EMIT_RESTART;
}
ihint.run_type = G_SIGNAL_RUN_LAST;
if ((node->flags & G_SIGNAL_RUN_LAST) && class_closure)
{
emission_state = EMISSION_RUN;
@ -1215,21 +1284,21 @@ signal_emit_R (SignalNode *node,
if (accu_used)
g_value_reset (&accu);
g_closure_invoke (class_closure,
(signal_id << 8) | G_SIGNAL_RUN_LAST,
&accu,
node->n_params + 1,
instance_and_params);
if (!accumulator (signal_id, return_value, &accu) &&
instance_and_params,
&ihint);
if (!accumulator (&ihint, return_value, &accu) &&
emission_state == EMISSION_RUN)
emission_state = EMISSION_STOP;
accu_used = TRUE;
}
else
g_closure_invoke (class_closure,
(signal_id << 8) | G_SIGNAL_RUN_LAST,
return_value,
node->n_params + 1,
instance_and_params);
instance_and_params,
&ihint);
G_LOCK (g_signal_mutex);
if (emission_state == EMISSION_STOP)
@ -1238,18 +1307,17 @@ signal_emit_R (SignalNode *node,
goto EMIT_RESTART;
}
if (handlers)
if (handler_list)
{
Handler *handler = handlers;
Handler *handler = handler_list;
emission_state = EMISSION_RUN;
handler_ref (handler);
do
{
Handler *tmp;
if (handler->after && !handler->block_count)
if (handler->after && !handler->block_count && (!handler->detail || handler->detail == detail))
{
G_UNLOCK (g_signal_mutex);
if (accumulator)
@ -1257,21 +1325,21 @@ signal_emit_R (SignalNode *node,
if (accu_used)
g_value_reset (&accu);
g_closure_invoke (handler->closure,
(signal_id << 8) | G_SIGNAL_RUN_LAST,
&accu,
node->n_params + 1,
instance_and_params);
if (!accumulator (signal_id, return_value, &accu) &&
instance_and_params,
&ihint);
if (!accumulator (&ihint, return_value, &accu) &&
emission_state == EMISSION_RUN)
emission_state = EMISSION_STOP;
accu_used = TRUE;
}
else
g_closure_invoke (handler->closure,
(signal_id << 8) | G_SIGNAL_RUN_LAST,
return_value,
node->n_params + 1,
instance_and_params);
instance_and_params,
&ihint);
G_LOCK (g_signal_mutex);
tmp = emission_state == EMISSION_RUN ? handler->next : NULL;
@ -1294,36 +1362,42 @@ signal_emit_R (SignalNode *node,
EMIT_CLEANUP:
ihint.run_type = G_SIGNAL_RUN_CLEANUP;
if ((node->flags & G_SIGNAL_RUN_CLEANUP) && class_closure)
{
gboolean need_unset = FALSE;
emission_state = EMISSION_STOP;
G_UNLOCK (g_signal_mutex);
if (node->return_type != G_TYPE_NONE)
{
if (!accumulator)
g_value_init (&accu, node->return_type);
{
g_value_init (&accu, node->return_type);
need_unset = TRUE;
}
else if (accu_used)
g_value_reset (&accu);
accu_used = TRUE;
}
g_closure_invoke (class_closure,
(signal_id << 8) | G_SIGNAL_RUN_CLEANUP,
node->return_type != G_TYPE_NONE ? &accu : NULL,
node->n_params + 1,
instance_and_params);
if (node->return_type != G_TYPE_NONE && !accumulator)
instance_and_params,
&ihint);
if (need_unset)
g_value_unset (&accu);
G_LOCK (g_signal_mutex);
if (emission_state == EMISSION_RESTART)
goto EMIT_RESTART;
}
if (handlers)
handler_unref_R (signal_id, instance, handlers);
if (handler_list)
handler_unref_R (signal_id, instance, handler_list);
emission_pop ((node->flags & G_SIGNAL_NO_RECURSE) ? &g_restart_emissions : &g_recursive_emissions);
emission_pop ((node->flags & G_SIGNAL_NO_RECURSE) ? &g_restart_emissions : &g_recursive_emissions, &emission_state);
if (accumulator)
{
G_UNLOCK (g_signal_mutex);

64
gobject/gsignal.h
View File

@ -30,9 +30,16 @@ extern "C" {
#endif /* __cplusplus */
/* --- macros --- */
#define G_SIGNAL_HINT_ID(hint) ((hint) >> 8)
#define G_SIGNAL_HINT_RUN_TYPE(hint) ((hint) & 0xff)
/* --- typedefs --- */
typedef struct _GSignalQuery GSignalQuery;
typedef struct _GSignalInvocationHint GSignalInvocationHint;
typedef GClosureMarshal GSignalCMarshaller;
typedef gboolean (*GSignalEmissionHook) (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values);
typedef gboolean (*GSignalAccumulator) (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *return_value);
/* --- run & match types --- */
@ -42,48 +49,46 @@ typedef enum
G_SIGNAL_RUN_LAST = 1 << 1,
G_SIGNAL_RUN_CLEANUP = 1 << 2,
G_SIGNAL_NO_RECURSE = 1 << 3,
G_SIGNAL_ACTION = 1 << 4,
G_SIGNAL_NO_HOOKS = 1 << 5
} GSignalType;
G_SIGNAL_DETAILED = 1 << 4,
G_SIGNAL_ACTION = 1 << 5,
G_SIGNAL_NO_HOOKS = 1 << 6
#define G_SIGNAL_FLAGS_MASK 0x7f
} GSignalFlags;
typedef enum
{
G_SIGNAL_MATCH_ID = 1 << 0,
G_SIGNAL_MATCH_CLOSURE = 1 << 1,
G_SIGNAL_MATCH_FUNC = 1 << 2,
G_SIGNAL_MATCH_DATA = 1 << 3,
G_SIGNAL_MATCH_UNBLOCKED = 1 << 4,
G_SIGNAL_MATCH_MASK = 0x1f
G_SIGNAL_MATCH_DETAIL = 1 << 1,
G_SIGNAL_MATCH_CLOSURE = 1 << 2,
G_SIGNAL_MATCH_FUNC = 1 << 3,
G_SIGNAL_MATCH_DATA = 1 << 4,
G_SIGNAL_MATCH_UNBLOCKED = 1 << 5
#define G_SIGNAL_MATCH_MASK 0x3f
} GSignalMatchType;
/* --- signal queries --- */
typedef struct _GSignalQuery GSignalQuery;
struct _GSignalQuery
/* --- signal information --- */
struct _GSignalInvocationHint
{
guint signal_id;
GQuark detail;
GSignalFlags run_type;
};
struct _GSignalQuery
{
guint signal_id;
const gchar *signal_name;
GType itype;
GSignalType signal_flags;
GSignalFlags signal_flags;
GType return_type;
guint n_params;
const GType *param_types;
};
/* --- function types --- */
typedef gboolean (*GSignalEmissionHook) (guint signal_id,
guint n_values,
const GValue *values);
typedef gboolean (*GSignalAccumulator) (guint signal_id,
GValue *return_accu,
const GValue *return_value);
typedef GClosureMarshal GSignalCMarshaller;
/* --- signals --- */
guint g_signal_newv (const gchar *signal_name,
GType itype,
GSignalType signal_flags,
GSignalFlags signal_flags,
GClosure *class_closure,
GSignalAccumulator accumulator,
GSignalCMarshaller c_marshaller,
@ -92,6 +97,7 @@ guint g_signal_newv (const gchar *signal_name,
GType *param_types);
void g_signal_emitv (const GValue *instance_and_params,
guint signal_id,
GQuark detail,
GValue *return_value);
guint g_signal_lookup (const gchar *name,
GType itype);
@ -103,6 +109,7 @@ void g_signal_query (guint signal_id,
/* --- signal handlers --- */
guint g_signal_connect_closure (gpointer instance,
guint signal_id,
GQuark detail,
GClosure *closure,
gboolean after);
void g_signal_handler_disconnect (gpointer instance,
@ -114,17 +121,20 @@ void g_signal_handler_unblock (gpointer instance,
guint g_signal_handler_find (gpointer instance,
GSignalMatchType mask,
guint signal_id,
GQuark detail,
GClosure *closure,
gpointer func,
gpointer data);
gboolean g_signal_has_handler_pending (gpointer instance,
guint signal_id,
GQuark detail,
gboolean may_be_blocked);
/* --- signal emissions --- */
void g_signal_stop_emission (gpointer instance,
guint signal_id);
guint signal_id,
GQuark detail);
guint g_signal_add_emission_hook_full (guint signal_id,
GClosure *closure);
void g_signal_remove_emission_hook (guint signal_id,