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API for changes in VM state (malc)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1614 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-11-11 00:00:47 +00:00
parent 946fc94733
commit 0bd4885002
2 changed files with 50 additions and 3 deletions
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45
vl.c
View File

@ -2935,9 +2935,47 @@ void gui_update(void *opaque)
qemu_mod_timer(gui_timer, GUI_REFRESH_INTERVAL + qemu_get_clock(rt_clock));
}
struct vm_change_state_entry {
VMChangeStateHandler *cb;
void *opaque;
LIST_ENTRY (vm_change_state_entry) entries;
};
static LIST_HEAD(vm_change_state_head, vm_change_state_entry) vm_change_state_head;
VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
void *opaque)
{
VMChangeStateEntry *e;
e = qemu_mallocz(sizeof (*e));
if (!e)
return NULL;
e->cb = cb;
e->opaque = opaque;
LIST_INSERT_HEAD(&vm_change_state_head, e, entries);
return e;
}
void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
{
LIST_REMOVE (e, entries);
qemu_free (e);
}
static void vm_state_notify(int running)
{
VMChangeStateEntry *e;
for (e = vm_change_state_head.lh_first; e; e = e->entries.le_next) {
e->cb(e->opaque, running);
}
}
/* XXX: support several handlers */
VMStopHandler *vm_stop_cb;
VMStopHandler *vm_stop_opaque;
static VMStopHandler *vm_stop_cb;
static void *vm_stop_opaque;
int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque)
{
@ -2956,6 +2994,7 @@ void vm_start(void)
if (!vm_running) {
cpu_enable_ticks();
vm_running = 1;
vm_state_notify(1);
}
}
@ -2969,6 +3008,7 @@ void vm_stop(int reason)
vm_stop_cb(vm_stop_opaque, reason);
}
}
vm_state_notify(0);
}
}
@ -3589,6 +3629,7 @@ int main(int argc, char **argv)
char usb_devices[MAX_VM_USB_PORTS][128];
int usb_devices_index;
LIST_INIT (&vm_change_state_head);
#if !defined(CONFIG_SOFTMMU)
/* we never want that malloc() uses mmap() */
mallopt(M_MMAP_THRESHOLD, 4096 * 1024);

6
vl.h
View File

@ -97,8 +97,14 @@ int strstart(const char *str, const char *val, const char **ptr);
extern int vm_running;
typedef struct vm_change_state_entry VMChangeStateEntry;
typedef void VMChangeStateHandler(void *opaque, int running);
typedef void VMStopHandler(void *opaque, int reason);
VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
void *opaque);
void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque);
void qemu_del_vm_stop_handler(VMStopHandler *cb, void *opaque);