c8b405b679
Register and unregister handlers. Event dispatcher code. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
#include "sysemu/sysemu.h"
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#include "qapi-types.h"
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#include "ui/input.h"
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struct QemuInputHandlerState {
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DeviceState *dev;
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QemuInputHandler *handler;
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int id;
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int events;
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QTAILQ_ENTRY(QemuInputHandlerState) node;
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};
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static QTAILQ_HEAD(, QemuInputHandlerState) handlers =
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QTAILQ_HEAD_INITIALIZER(handlers);
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QemuInputHandlerState *qemu_input_handler_register(DeviceState *dev,
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QemuInputHandler *handler)
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{
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QemuInputHandlerState *s = g_new0(QemuInputHandlerState, 1);
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static int id = 1;
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s->dev = dev;
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s->handler = handler;
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s->id = id++;
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QTAILQ_INSERT_TAIL(&handlers, s, node);
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return s;
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}
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void qemu_input_handler_activate(QemuInputHandlerState *s)
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{
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QTAILQ_REMOVE(&handlers, s, node);
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QTAILQ_INSERT_HEAD(&handlers, s, node);
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}
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void qemu_input_handler_unregister(QemuInputHandlerState *s)
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{
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QTAILQ_REMOVE(&handlers, s, node);
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g_free(s);
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}
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static QemuInputHandlerState*
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qemu_input_find_handler(uint32_t mask)
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{
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QemuInputHandlerState *s;
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QTAILQ_FOREACH(s, &handlers, node) {
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if (mask & s->handler->mask) {
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return s;
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}
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}
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return NULL;
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}
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void qemu_input_event_send(QemuConsole *src, InputEvent *evt)
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{
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QemuInputHandlerState *s;
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if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
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return;
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}
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s = qemu_input_find_handler(1 << evt->kind);
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s->handler->event(s->dev, src, evt);
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s->events++;
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}
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void qemu_input_event_sync(void)
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{
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QemuInputHandlerState *s;
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if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
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return;
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}
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QTAILQ_FOREACH(s, &handlers, node) {
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if (!s->events) {
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continue;
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}
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if (s->handler->sync) {
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s->handler->sync(s->dev);
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}
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s->events = 0;
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}
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}
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