From cd6cd8fa0da7839b11ca7e5d7d45b73810394395 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Mon, 7 May 2018 11:54:24 +0200 Subject: console: use linked list for QemuConsoles Signed-off-by: Gerd Hoffmann Message-id: 20180507095424.16220-1-kraxel@redhat.com --- ui/console.c | 105 +++++++++++++++++++++++++++++++++-------------------------- 1 file changed, 58 insertions(+), 47 deletions(-) diff --git a/ui/console.c b/ui/console.c index b02510cdca..945f05d728 100644 --- a/ui/console.c +++ b/ui/console.c @@ -165,6 +165,8 @@ struct QemuConsole { QEMUFIFO out_fifo; uint8_t out_fifo_buf[16]; QEMUTimer *kbd_timer; + + QTAILQ_ENTRY(QemuConsole) next; }; struct DisplayState { @@ -180,8 +182,8 @@ struct DisplayState { static DisplayState *display_state; static QemuConsole *active_console; -static QemuConsole **consoles; -static int nb_consoles = 0; +static QTAILQ_HEAD(consoles_head, QemuConsole) consoles = + QTAILQ_HEAD_INITIALIZER(consoles); static bool cursor_visible_phase; static QEMUTimer *cursor_timer; @@ -197,7 +199,7 @@ static void gui_update(void *opaque) uint64_t dcl_interval; DisplayState *ds = opaque; DisplayChangeListener *dcl; - int i; + QemuConsole *con; ds->refreshing = true; dpy_refresh(ds); @@ -212,9 +214,9 @@ static void gui_update(void *opaque) } if (ds->update_interval != interval) { ds->update_interval = interval; - for (i = 0; i < nb_consoles; i++) { - if (consoles[i]->hw_ops->update_interval) { - consoles[i]->hw_ops->update_interval(consoles[i]->hw, interval); + QTAILQ_FOREACH(con, &consoles, next) { + if (con->hw_ops->update_interval) { + con->hw_ops->update_interval(con->hw, interval); } } trace_console_refresh(interval); @@ -1292,10 +1294,13 @@ static QemuConsole *new_console(DisplayState *ds, console_type_t console_type, s->ds = ds; s->console_type = console_type; - consoles = g_realloc(consoles, sizeof(*consoles) * (nb_consoles+1)); - if (console_type != GRAPHIC_CONSOLE || qdev_hotplug) { - s->index = nb_consoles; - consoles[nb_consoles++] = s; + if (QTAILQ_EMPTY(&consoles)) { + s->index = 0; + QTAILQ_INSERT_TAIL(&consoles, s, next); + } else if (console_type != GRAPHIC_CONSOLE || qdev_hotplug) { + QemuConsole *last = QTAILQ_LAST(&consoles, consoles_head); + s->index = last->index + 1; + QTAILQ_INSERT_TAIL(&consoles, s, next); } else { /* * HACK: Put graphical consoles before text consoles. @@ -1303,15 +1308,24 @@ static QemuConsole *new_console(DisplayState *ds, console_type_t console_type, * Only do that for coldplugged devices. After initial device * initialization we will not renumber the consoles any more. */ - for (i = nb_consoles; i > 0; i--) { - if (consoles[i - 1]->console_type == GRAPHIC_CONSOLE) - break; - consoles[i] = consoles[i - 1]; - consoles[i]->index = i; + QemuConsole *c = QTAILQ_FIRST(&consoles); + + while (QTAILQ_NEXT(c, next) != NULL && + c->console_type == GRAPHIC_CONSOLE) { + c = QTAILQ_NEXT(c, next); + } + if (c->console_type == GRAPHIC_CONSOLE) { + /* have no text consoles */ + s->index = c->index + 1; + QTAILQ_INSERT_AFTER(&consoles, c, s, next); + } else { + s->index = c->index; + QTAILQ_INSERT_BEFORE(c, s, next); + /* renumber text consoles */ + for (i = s->index + 1; c != NULL; c = QTAILQ_NEXT(c, next), i++) { + c->index = i; + } } - s->index = i; - consoles[i] = s; - nb_consoles++; } return s; } @@ -1861,21 +1875,21 @@ static DisplayState *get_alloc_displaystate(void) DisplayState *init_displaystate(void) { gchar *name; - int i; + QemuConsole *con; get_alloc_displaystate(); - for (i = 0; i < nb_consoles; i++) { - if (consoles[i]->console_type != GRAPHIC_CONSOLE && - consoles[i]->ds == NULL) { - text_console_do_init(consoles[i]->chr, display_state); + QTAILQ_FOREACH(con, &consoles, next) { + if (con->console_type != GRAPHIC_CONSOLE && + con->ds == NULL) { + text_console_do_init(con->chr, display_state); } /* Hook up into the qom tree here (not in new_console()), once * all QemuConsoles are created and the order / numbering * doesn't change any more */ - name = g_strdup_printf("console[%d]", i); + name = g_strdup_printf("console[%d]", con->index); object_property_add_child(container_get(object_get_root(), "/backend"), - name, OBJECT(consoles[i]), &error_abort); + name, OBJECT(con), &error_abort); g_free(name); } @@ -1957,33 +1971,34 @@ void graphic_console_close(QemuConsole *con) QemuConsole *qemu_console_lookup_by_index(unsigned int index) { - if (index >= nb_consoles) { - return NULL; + QemuConsole *con; + + QTAILQ_FOREACH(con, &consoles, next) { + if (con->index == index) { + return con; + } } - return consoles[index]; + return NULL; } QemuConsole *qemu_console_lookup_by_device(DeviceState *dev, uint32_t head) { + QemuConsole *con; Object *obj; uint32_t h; - int i; - for (i = 0; i < nb_consoles; i++) { - if (!consoles[i]) { - continue; - } - obj = object_property_get_link(OBJECT(consoles[i]), + QTAILQ_FOREACH(con, &consoles, next) { + obj = object_property_get_link(OBJECT(con), "device", &error_abort); if (DEVICE(obj) != dev) { continue; } - h = object_property_get_uint(OBJECT(consoles[i]), + h = object_property_get_uint(OBJECT(con), "head", &error_abort); if (h != head) { continue; } - return consoles[i]; + return con; } return NULL; } @@ -2013,22 +2028,19 @@ QemuConsole *qemu_console_lookup_by_device_name(const char *device_id, QemuConsole *qemu_console_lookup_unused(void) { + QemuConsole *con; Object *obj; - int i; - for (i = 0; i < nb_consoles; i++) { - if (!consoles[i]) { - continue; - } - if (consoles[i]->hw_ops != &unused_ops) { + QTAILQ_FOREACH(con, &consoles, next) { + if (con->hw_ops != &unused_ops) { continue; } - obj = object_property_get_link(OBJECT(consoles[i]), + obj = object_property_get_link(OBJECT(con), "device", &error_abort); if (obj != NULL) { continue; } - return consoles[i]; + return con; } return NULL; } @@ -2130,12 +2142,11 @@ static void text_console_update_cursor_timer(void) static void text_console_update_cursor(void *opaque) { QemuConsole *s; - int i, count = 0; + int count = 0; cursor_visible_phase = !cursor_visible_phase; - for (i = 0; i < nb_consoles; i++) { - s = consoles[i]; + QTAILQ_FOREACH(s, &consoles, next) { if (qemu_console_is_graphic(s) || !qemu_console_is_visible(s)) { continue; -- cgit v1.2.3