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xemu/sysemu.h
lirans@il.ibm.com c163b5cae9 Block live migration 
This patch introduces block migration called during live migration. Block
are being copied to the destination in an async way. First the code will
transfer the whole disk and then transfer all dirty blocks accumulted during
the migration.
Still need to improve transition from the iterative phase of migration to the
end phase. For now transition will take place when all blocks transfered once,
all the dirty blocks will be transfered during the end phase (guest is
suspended).

Changes from v4:
- Global variabels moved to a global state structure allocated dynamically.
- Minor coding style issues.
- Poll block.c for tracking of dirty blocks instead of manage it here.

Signed-off-by: Liran Schour <lirans@il.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-17 08:49:30 -06:00

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#ifndef SYSEMU_H
#define SYSEMU_H
/* Misc. things related to the system emulator. */
#include "qemu-common.h"
#include "qemu-option.h"
#include "qemu-queue.h"
#include "qemu-timer.h"
#include "qdict.h"
#ifdef _WIN32
#include <windows.h>
#endif
/* vl.c */
extern const char *bios_name;
#define QEMU_FILE_TYPE_BIOS 0
#define QEMU_FILE_TYPE_KEYMAP 1
char *qemu_find_file(int type, const char *name);
extern int vm_running;
extern const char *qemu_name;
extern uint8_t qemu_uuid[];
int qemu_uuid_parse(const char *str, uint8_t *uuid);
#define UUID_FMT "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
typedef struct vm_change_state_entry VMChangeStateEntry;
typedef void VMChangeStateHandler(void *opaque, int running, int reason);
VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
void *opaque);
void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
void vm_start(void);
void vm_stop(int reason);
uint64_t ram_bytes_remaining(void);
uint64_t ram_bytes_transferred(void);
uint64_t ram_bytes_total(void);
int64_t cpu_get_ticks(void);
void cpu_enable_ticks(void);
void cpu_disable_ticks(void);
void qemu_system_reset_request(void);
void qemu_system_shutdown_request(void);
void qemu_system_powerdown_request(void);
int qemu_shutdown_requested(void);
int qemu_reset_requested(void);
int qemu_powerdown_requested(void);
extern qemu_irq qemu_system_powerdown;
void qemu_system_reset(void);
void do_savevm(Monitor *mon, const QDict *qdict);
int load_vmstate(Monitor *mon, const char *name);
void do_delvm(Monitor *mon, const QDict *qdict);
void do_info_snapshots(Monitor *mon);
void qemu_announce_self(void);
void main_loop_wait(int timeout);
int qemu_savevm_state_begin(QEMUFile *f, int blk_enable, int shared);
int qemu_savevm_state_iterate(QEMUFile *f);
int qemu_savevm_state_complete(QEMUFile *f);
int qemu_savevm_state(QEMUFile *f);
int qemu_loadvm_state(QEMUFile *f);
void qemu_errors_to_file(FILE *fp);
void qemu_errors_to_mon(Monitor *mon);
void qemu_errors_to_previous(void);
void qemu_error(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
#ifdef _WIN32
/* Polling handling */
/* return TRUE if no sleep should be done afterwards */
typedef int PollingFunc(void *opaque);
int qemu_add_polling_cb(PollingFunc *func, void *opaque);
void qemu_del_polling_cb(PollingFunc *func, void *opaque);
/* Wait objects handling */
typedef void WaitObjectFunc(void *opaque);
int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque);
void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque);
#endif
/* SLIRP */
void do_info_slirp(Monitor *mon);
typedef enum DisplayType
{
DT_DEFAULT,
DT_CURSES,
DT_SDL,
DT_VNC,
DT_NOGRAPHIC,
} DisplayType;
extern int autostart;
extern int bios_size;
typedef enum {
VGA_NONE, VGA_STD, VGA_CIRRUS, VGA_VMWARE, VGA_XENFB
} VGAInterfaceType;
extern int vga_interface_type;
#define cirrus_vga_enabled (vga_interface_type == VGA_CIRRUS)
#define std_vga_enabled (vga_interface_type == VGA_STD)
#define xenfb_enabled (vga_interface_type == VGA_XENFB)
#define vmsvga_enabled (vga_interface_type == VGA_VMWARE)
extern int graphic_width;
extern int graphic_height;
extern int graphic_depth;
extern uint8_t irq0override;
extern DisplayType display_type;
extern const char *keyboard_layout;
extern int win2k_install_hack;
extern int rtc_td_hack;
extern int alt_grab;
extern int ctrl_grab;
extern int usb_enabled;
extern int smp_cpus;
extern int max_cpus;
extern int cursor_hide;
extern int graphic_rotate;
extern int no_quit;
extern int semihosting_enabled;
extern int old_param;
extern int boot_menu;
extern QEMUClock *rtc_clock;
#define MAX_NODES 64
extern int nb_numa_nodes;
extern uint64_t node_mem[MAX_NODES];
extern uint64_t node_cpumask[MAX_NODES];
#define MAX_OPTION_ROMS 16
extern const char *option_rom[MAX_OPTION_ROMS];
extern int nb_option_roms;
#ifdef NEED_CPU_H
#if defined(TARGET_SPARC) || defined(TARGET_PPC)
#define MAX_PROM_ENVS 128
extern const char *prom_envs[MAX_PROM_ENVS];
extern unsigned int nb_prom_envs;
#endif
#endif
typedef enum {
IF_NONE,
IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
IF_COUNT
} BlockInterfaceType;
typedef enum {
BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
BLOCK_ERR_STOP_ANY
} BlockInterfaceErrorAction;
#define BLOCK_SERIAL_STRLEN 20
typedef struct DriveInfo {
BlockDriverState *bdrv;
char *id;
const char *devaddr;
BlockInterfaceType type;
int bus;
int unit;
QemuOpts *opts;
BlockInterfaceErrorAction onerror;
char serial[BLOCK_SERIAL_STRLEN + 1];
QTAILQ_ENTRY(DriveInfo) next;
} DriveInfo;
#define MAX_IDE_DEVS 2
#define MAX_SCSI_DEVS 7
#define MAX_DRIVES 32
extern QTAILQ_HEAD(drivelist, DriveInfo) drives;
extern QTAILQ_HEAD(driveoptlist, DriveOpt) driveopts;
extern DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit);
extern DriveInfo *drive_get_by_id(const char *id);
extern int drive_get_max_bus(BlockInterfaceType type);
extern void drive_uninit(DriveInfo *dinfo);
extern const char *drive_get_serial(BlockDriverState *bdrv);
extern BlockInterfaceErrorAction drive_get_onerror(BlockDriverState *bdrv);
BlockDriverState *qdev_init_bdrv(DeviceState *dev, BlockInterfaceType type);
extern QemuOpts *drive_add(const char *file, const char *fmt, ...);
extern DriveInfo *drive_init(QemuOpts *arg, void *machine, int *fatal_error);
/* device-hotplug */
DriveInfo *add_init_drive(const char *opts);
/* pci-hotplug */
void pci_device_hot_add(Monitor *mon, const QDict *qdict);
void drive_hot_add(Monitor *mon, const QDict *qdict);
void pci_device_hot_remove(Monitor *mon, const char *pci_addr);
void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict,
QObject **ret_data);
/* serial ports */
#define MAX_SERIAL_PORTS 4
extern CharDriverState *serial_hds[MAX_SERIAL_PORTS];
/* parallel ports */
#define MAX_PARALLEL_PORTS 3
extern CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
/* virtio consoles */
#define MAX_VIRTIO_CONSOLES 1
extern CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
#ifdef HAS_AUDIO
struct soundhw {
const char *name;
const char *descr;
int enabled;
int isa;
union {
int (*init_isa) (qemu_irq *pic);
int (*init_pci) (PCIBus *bus);
} init;
};
extern struct soundhw soundhw[];
#endif
void do_usb_add(Monitor *mon, const QDict *qdict);
void do_usb_del(Monitor *mon, const QDict *qdict);
void usb_info(Monitor *mon);
void register_devices(void);
#endif
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