sysemu: Split sysemu/runstate.h off sysemu/sysemu.h

sysemu/sysemu.h is a rather unfocused dumping ground for stuff related
to the system-emulator.  Evidence:

* It's included widely: in my "build everything" tree, changing
  sysemu/sysemu.h still triggers a recompile of some 1100 out of 6600
  objects (not counting tests and objects that don't depend on
  qemu/osdep.h, down from 5400 due to the previous two commits).

* It pulls in more than a dozen additional headers.

Split stuff related to run state management into its own header
sysemu/runstate.h.

Touching sysemu/sysemu.h now recompiles some 850 objects.  qemu/uuid.h
also drops from 1100 to 850, and qapi/qapi-types-run-state.h from 4400
to 4200.  Touching new sysemu/runstate.h recompiles some 500 objects.

Since I'm touching MAINTAINERS to add sysemu/runstate.h anyway, also
add qemu/main-loop.h.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190812052359.30071-30-armbru@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
[Unbreak OS-X build]

1 files changed, 68 insertions, 0 deletions

diff --git a/include/sysemu/runstate.h b/include/sysemu/runstate.h
new file mode 100644
index 0000000..0b41555
--- /dev/null
+++ b/include/sysemu/runstate.h
@@ -0,0 +1,68 @@
+#ifndef SYSEMU_RUNSTATE_H
+#define SYSEMU_RUNSTATE_H
+
+#include "qapi/qapi-types-run-state.h"
+#include "qemu/notify.h"
+
+bool runstate_check(RunState state);
+void runstate_set(RunState new_state);
+int runstate_is_running(void);
+bool runstate_needs_reset(void);
+bool runstate_store(char *str, size_t size);
+
+typedef void VMChangeStateHandler(void *opaque, int running, RunState state);
+
+VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
+                                                     void *opaque);
+VMChangeStateEntry *qemu_add_vm_change_state_handler_prio(
+        VMChangeStateHandler *cb, void *opaque, int priority);
+VMChangeStateEntry *qdev_add_vm_change_state_handler(DeviceState *dev,
+                                                     VMChangeStateHandler *cb,
+                                                     void *opaque);
+void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
+void vm_state_notify(int running, RunState state);
+
+static inline bool shutdown_caused_by_guest(ShutdownCause cause)
+{
+    return cause >= SHUTDOWN_CAUSE_GUEST_SHUTDOWN;
+}
+
+void vm_start(void);
+int vm_prepare_start(void);
+int vm_stop(RunState state);
+int vm_stop_force_state(RunState state);
+int vm_shutdown(void);
+
+typedef enum WakeupReason {
+    /* Always keep QEMU_WAKEUP_REASON_NONE = 0 */
+    QEMU_WAKEUP_REASON_NONE = 0,
+    QEMU_WAKEUP_REASON_RTC,
+    QEMU_WAKEUP_REASON_PMTIMER,
+    QEMU_WAKEUP_REASON_OTHER,
+} WakeupReason;
+
+void qemu_exit_preconfig_request(void);
+void qemu_system_reset_request(ShutdownCause reason);
+void qemu_system_suspend_request(void);
+void qemu_register_suspend_notifier(Notifier *notifier);
+bool qemu_wakeup_suspend_enabled(void);
+void qemu_system_wakeup_request(WakeupReason reason, Error **errp);
+void qemu_system_wakeup_enable(WakeupReason reason, bool enabled);
+void qemu_register_wakeup_notifier(Notifier *notifier);
+void qemu_register_wakeup_support(void);
+void qemu_system_shutdown_request(ShutdownCause reason);
+void qemu_system_powerdown_request(void);
+void qemu_register_powerdown_notifier(Notifier *notifier);
+void qemu_register_shutdown_notifier(Notifier *notifier);
+void qemu_system_debug_request(void);
+void qemu_system_vmstop_request(RunState reason);
+void qemu_system_vmstop_request_prepare(void);
+bool qemu_vmstop_requested(RunState *r);
+ShutdownCause qemu_shutdown_requested_get(void);
+ShutdownCause qemu_reset_requested_get(void);
+void qemu_system_killed(int signal, pid_t pid);
+void qemu_system_reset(ShutdownCause reason);
+void qemu_system_guest_panicked(GuestPanicInformation *info);
+
+#endif
+