From: Rémi Bernon rbernon@codeweavers.com
--- server/class.c | 112 ++++++++++++++++++++++---------------------- server/protocol.def | 4 ++ 2 files changed, 61 insertions(+), 55 deletions(-)
diff --git a/server/class.c b/server/class.c index 098acf8c041..de2c4ee429c 100644 --- a/server/class.c +++ b/server/class.c @@ -46,19 +46,15 @@ struct window_class struct process *process; /* process owning the class */ int count; /* reference count */ int local; /* local class? */ - atom_t atom; /* class atom */ - atom_t base_atom; /* base class atom for versioned class */ - mod_handle_t instance; /* module instance */ - unsigned int style; /* class style */ - int win_extra; /* number of window extra bytes */ + atom_t atom; /* class atom for versioned class */ client_ptr_t client_ptr; /* pointer to class in client address space */ class_shm_t *shared; /* class in session shared memory */ int nb_extra_bytes; /* number of extra bytes */ char extra_bytes[1]; /* extra bytes storage */ };
-static struct window_class *create_class( struct process *process, int extra_bytes, int local, - struct unicode_str *name, unsigned int name_offset ) +static struct window_class *create_class( struct process *process, int extra_bytes, int local, struct unicode_str *name, unsigned int name_offset, + atom_t atom, mod_handle_t instance, unsigned int style, int win_extra ) { struct window_class *class;
@@ -74,8 +70,12 @@ static struct window_class *create_class( struct process *process, int extra_byt SHARED_WRITE_BEGIN( class->shared, class_shm_t ) { memcpy( (void *)shared->name, name->str, name->len ); - shared->name_offset = name_offset; - shared->name_len = name->len; + shared->name_offset = name_offset; + shared->name_len = name->len; + shared->atom = atom; + shared->instance = instance; + shared->style = style; + shared->win_extra = win_extra; } SHARED_WRITE_END;
@@ -96,7 +96,7 @@ static void destroy_class( struct window_class *class ) struct atom_table *table = get_user_atom_table();
release_atom( table, class->atom ); - release_atom( table, class->base_atom ); + release_atom( table, class->shared->atom ); list_remove( &class->entry ); release_object( class->process ); if (class->shared) free_shared_object( class->shared ); @@ -121,10 +121,11 @@ static struct window_class *find_class( struct process *process, atom_t atom, mo
LIST_FOR_EACH_ENTRY( class, &process->classes, struct window_class, entry ) { + const class_shm_t *shared = class->shared; if (class->atom != atom) continue; - is_win16 = !(class->instance >> 16); - if (!instance || !class->local || class->instance == instance || - (!is_win16 && ((class->instance & ~0xffff) == (instance & ~0xffff)))) return class; + is_win16 = !(shared->instance >> 16); + if (!instance || !class->local || shared->instance == instance || + (!is_win16 && ((shared->instance & ~0xffff) == (instance & ~0xffff)))) return class; } return NULL; } @@ -136,7 +137,7 @@ struct window_class *grab_class( struct process *process, atom_t atom, mod_handl if (class) { class->count++; - *extra_bytes = class->win_extra; + *extra_bytes = class->shared->win_extra; *locator = get_shared_object_locator( class->shared ); } else set_error( STATUS_INVALID_HANDLE ); @@ -151,7 +152,7 @@ void release_class( struct window_class *class )
int is_desktop_class( struct window_class *class ) { - return (class->atom == DESKTOP_ATOM && !class->local); + return (class->shared->atom == DESKTOP_ATOM && !class->local); }
int is_message_class( struct window_class *class ) @@ -160,17 +161,17 @@ int is_message_class( struct window_class *class ) static const struct unicode_str name = { messageW, sizeof(messageW) }; struct atom_table *table = get_user_atom_table();
- return (!class->local && class->atom == find_atom( table, &name )); + return (!class->local && class->shared->atom == find_atom( table, &name )); }
int get_class_style( struct window_class *class ) { - return class->style; + return class->shared->style; }
atom_t get_class_atom( struct window_class *class ) { - return class->base_atom; + return class->shared->atom; }
client_ptr_t get_class_client_ptr( struct window_class *class ) @@ -238,17 +239,14 @@ DECL_HANDLER(create_class) return; }
- if (!(class = create_class( current->process, req->extra, req->local, &name, offset ))) + if (!(class = create_class( current->process, req->extra, req->local, &name, offset, + base_atom, req->instance, req->style, req->win_extra ))) { release_atom( table, atom ); release_atom( table, base_atom ); return; } class->atom = atom; - class->base_atom = base_atom; - class->instance = req->instance; - class->style = req->style; - class->win_extra = req->win_extra; class->client_ptr = req->client_ptr; reply->locator = get_shared_object_locator( class->shared ); reply->atom = base_atom; @@ -289,39 +287,43 @@ DECL_HANDLER(set_class_info) return; }
- switch (req->offset) + SHARED_WRITE_BEGIN( class->shared, class_shm_t ) { - case GCL_STYLE: - reply->old_info = class->style; - class->style = req->new_info; - break; - case GCL_CBWNDEXTRA: - if (req->new_info > 4096) - { - set_error( STATUS_INVALID_PARAMETER ); - return; - } - reply->old_info = class->win_extra; - class->win_extra = req->new_info; - break; - case GCL_CBCLSEXTRA: - set_win32_error( ERROR_INVALID_INDEX ); - break; - case GCLP_HMODULE: - reply->old_info = class->instance; - class->instance = req->new_info; - break; - default: - if (req->size > sizeof(req->new_info) || req->offset < 0 || - req->offset > class->nb_extra_bytes - (int)req->size) + switch (req->offset) { + case GCL_STYLE: + reply->old_info = shared->style; + shared->style = req->new_info; + break; + case GCL_CBWNDEXTRA: + if (req->new_info > 4096) + { + set_error( STATUS_INVALID_PARAMETER ); + return; + } + reply->old_info = shared->win_extra; + shared->win_extra = req->new_info; + break; + case GCL_CBCLSEXTRA: set_win32_error( ERROR_INVALID_INDEX ); - return; + break; + case GCLP_HMODULE: + reply->old_info = shared->instance; + shared->instance = req->new_info; + break; + default: + if (req->size > sizeof(req->new_info) || req->offset < 0 || + req->offset > class->nb_extra_bytes - (int)req->size) + { + set_win32_error( ERROR_INVALID_INDEX ); + return; + } + memcpy( &reply->old_info, class->extra_bytes + req->offset, req->size ); + memcpy( class->extra_bytes + req->offset, &req->new_info, req->size ); + break; } - memcpy( &reply->old_info, class->extra_bytes + req->offset, req->size ); - memcpy( class->extra_bytes + req->offset, &req->new_info, req->size ); - break; } + SHARED_WRITE_END; }
@@ -343,11 +345,11 @@ DECL_HANDLER(get_class_info) /* not supported */ set_win32_error( ERROR_INVALID_HANDLE ); break; - case GCL_STYLE: reply->info = class->style; break; - case GCL_CBWNDEXTRA: reply->info = class->win_extra; break; + case GCL_STYLE: reply->info = class->shared->style; break; + case GCL_CBWNDEXTRA: reply->info = class->shared->win_extra; break; case GCL_CBCLSEXTRA: reply->info = class->nb_extra_bytes; break; - case GCLP_HMODULE: reply->info = class->instance; break; - case GCW_ATOM: reply->info = class->atom; break; + case GCLP_HMODULE: reply->info = class->shared->instance; break; + case GCW_ATOM: reply->info = class->shared->atom; break; default: if (req->size > sizeof(reply->info) || req->offset < 0 || req->offset > class->nb_extra_bytes - (int)req->size) diff --git a/server/protocol.def b/server/protocol.def index c9c77b1cf17..37c5e8be83f 100644 --- a/server/protocol.def +++ b/server/protocol.def @@ -1039,6 +1039,10 @@ typedef volatile struct
typedef volatile struct { + atom_t atom; /* class atom */ + unsigned int style; /* class style */ + unsigned int win_extra; /* number of window extra bytes */ + mod_handle_t instance; /* module instance */ data_size_t name_offset; /* offset in WCHAR of the unversioned class name, constant */ data_size_t name_len; /* len in bytes of the class name, constant */ WCHAR name[MAX_ATOM_LEN]; /* class name, constant */