-#ifdef HAVE_VIRDOMAINSETSCHEDULERPARAMETERS
-extern int virDomainSetSchedulerParameters (virDomainPtr domain,
- virSchedParameterPtr params,
- int nparams)
- __attribute__((weak));
-#endif
-#ifdef HAVE_VIRNODEGETFREEMEMORY
-extern unsigned long long virNodeGetFreeMemory (virConnectPtr conn)
- __attribute__((weak));
-#endif
-#ifdef HAVE_VIRNODEGETCELLSFREEMEMORY
-extern int virNodeGetCellsFreeMemory (virConnectPtr conn,
- unsigned long long *freeMems,
- int startCell, int maxCells)
- __attribute__((weak));
-#endif
-#endif /* HAVE_WEAK_SYMBOLS */
-
-/*----------------------------------------------------------------------*/
-
-CAMLprim value
-ocaml_libvirt_get_version (value driverv, value unit)
-{
- CAMLparam2 (driverv, unit);
- CAMLlocal1 (rv);
- const char *driver = Optstring_val (driverv);
- unsigned long libVer, typeVer = 0, *typeVer_ptr;
- int r;
-
- typeVer_ptr = driver ? &typeVer : NULL;
- NONBLOCKING (r = virGetVersion (&libVer, driver, typeVer_ptr));
- CHECK_ERROR (r == -1, NULL, "virGetVersion");
-
- rv = caml_alloc_tuple (2);
- Store_field (rv, 0, Val_int (libVer));
- Store_field (rv, 1, Val_int (typeVer));
- CAMLreturn (rv);
-}
-
-/*----------------------------------------------------------------------*/
-
-/* Some notes about the use of custom blocks to store virConnectPtr,
- * virDomainPtr and virNetworkPtr.
- *------------------------------------------------------------------
- *
- * Libvirt does some tricky reference counting to keep track of
- * virConnectPtr's, virDomainPtr's and virNetworkPtr's.
- *
- * There is only one function which can return a virConnectPtr
- * (virConnectOpen*) and that allocates a new one each time.
- *
- * virDomainPtr/virNetworkPtr's on the other hand can be returned
- * repeatedly (for the same underlying domain/network), and we must
- * keep track of each one and explicitly free it with virDomainFree
- * or virNetworkFree. If we lose track of one then the reference
- * counting in libvirt will keep it open. We therefore wrap these
- * in a custom block with a finalizer function.
- *
- * We also have to allow the user to explicitly free them, in
- * which case we set the pointer inside the custom block to NULL.
- * The finalizer notices this and doesn't free the object.
- *
- * Domains and networks "belong to" a connection. We have to avoid
- * the situation like this:
- *
- * let conn = Connect.open ... in
- * let dom = Domain.lookup_by_id conn 0 in
- * (* conn goes out of scope and is garbage collected *)
- * printf "dom name = %s\n" (Domain.get_name dom)
- *
- * The reason is that when conn is garbage collected, virConnectClose
- * is called and any subsequent operations on dom will fail (in fact
- * will probably segfault). To stop this from happening, the OCaml
- * wrappers store domains (and networks) as explicit (dom, conn)
- * pairs.
- *
- * Further complication with virterror / exceptions: Virterror gives
- * us virConnectPtr, virDomainPtr, virNetworkPtr pointers. If we
- * follow standard practice and wrap these up in blocks with
- * finalizers then we'll end up double-freeing (in particular, calling
- * virConnectClose at the wrong time). So for virterror, we have
- * "special" wrapper functions (Val_connect_no_finalize, etc.).
- */
-
-/* Unwrap a custom block. */
-#define Connect_val(rv) (*((virConnectPtr *)Data_custom_val(rv)))
-#define Dom_val(rv) (*((virDomainPtr *)Data_custom_val(rv)))
-#define Net_val(rv) (*((virNetworkPtr *)Data_custom_val(rv)))
-
-/* Wrap up a pointer to something in a custom block. */
-static value Val_connect (virConnectPtr conn);
-static value Val_dom (virDomainPtr dom);
-static value Val_net (virNetworkPtr net);
-
-/* ONLY for use by virterror wrappers. */
-static value Val_connect_no_finalize (virConnectPtr conn);
-static value Val_dom_no_finalize (virDomainPtr dom);
-static value Val_net_no_finalize (virNetworkPtr net);
-
-/* Domains and networks are stored as pairs (dom/net, conn), so have
- * some convenience functions for unwrapping and wrapping them.
- */
-#define Domain_val(rv) (Dom_val(Field((rv),0)))
-#define Network_val(rv) (Net_val(Field((rv),0)))
-#define Connect_domv(rv) (Connect_val(Field((rv),1)))
-#define Connect_netv(rv) (Connect_val(Field((rv),1)))
-
-static value Val_domain (virDomainPtr dom, value connv);
-static value Val_network (virNetworkPtr net, value connv);
-
-/* ONLY for use by virterror wrappers. */
-static value Val_domain_no_finalize (virDomainPtr dom, value connv);
-static value Val_network_no_finalize (virNetworkPtr net, value connv);
-
-/*----------------------------------------------------------------------*/
-
-/* Connection object. */
-
-CAMLprim value
-ocaml_libvirt_connect_open (value namev, value unit)
-{
- CAMLparam2 (namev, unit);
- CAMLlocal1 (rv);
- const char *name = Optstring_val (namev);
- virConnectPtr conn;
-
- NONBLOCKING (conn = virConnectOpen (name));
- CHECK_ERROR (!conn, NULL, "virConnectOpen");
-
- rv = Val_connect (conn);
-
- CAMLreturn (rv);
-}
-
-CAMLprim value
-ocaml_libvirt_connect_open_readonly (value namev, value unit)
-{
- CAMLparam2 (namev, unit);
- CAMLlocal1 (rv);
- const char *name = Optstring_val (namev);
- virConnectPtr conn;
-
- NONBLOCKING (conn = virConnectOpenReadOnly (name));
- CHECK_ERROR (!conn, NULL, "virConnectOpen");
-
- rv = Val_connect (conn);
-
- CAMLreturn (rv);
-}
-
-CAMLprim value
-ocaml_libvirt_connect_close (value connv)
-{
- CAMLparam1 (connv);
- virConnectPtr conn = Connect_val (connv);
- int r;
-
- NONBLOCKING (r = virConnectClose (conn));
- CHECK_ERROR (r == -1, conn, "virConnectClose");
-
- /* So that we don't double-free in the finalizer: */
- Connect_val (connv) = NULL;
-
- CAMLreturn (Val_unit);
-}
-
-CAMLprim value
-ocaml_libvirt_connect_get_type (value connv)
-{
- CAMLparam1 (connv);
- CAMLlocal1 (rv);
- virConnectPtr conn = Connect_val (connv);
- const char *r;
-
- NONBLOCKING (r = virConnectGetType (conn));
- CHECK_ERROR (!r, conn, "virConnectGetType");
-
- rv = caml_copy_string (r);
- CAMLreturn (rv);
-}
-
-CAMLprim value
-ocaml_libvirt_connect_get_version (value connv)
-{
- CAMLparam1 (connv);
- virConnectPtr conn = Connect_val (connv);
- unsigned long hvVer;
- int r;
-
- NONBLOCKING (r = virConnectGetVersion (conn, &hvVer));
- CHECK_ERROR (r == -1, conn, "virConnectGetVersion");
-
- CAMLreturn (Val_int (hvVer));
-}