xnu-1699.24.23.tar.gz

[apple/xnu.git] / osfmk / ipc / ipc_port.h

diff --git a/osfmk/ipc/ipc_port.h b/osfmk/ipc/ipc_port.h
index 4998a84bc6e860b3186daaae68767f3ad3d8de42..34aab79d821ce4288c45b219f79221bc1d5cbe5f 100644 (file)
--- a/osfmk/ipc/ipc_port.h
+++ b/osfmk/ipc/ipc_port.h
@@ -127,13 +127,15 @@ struct ipc_port {
        } data;
 
        ipc_kobject_t ip_kobject;
+
        mach_port_mscount_t ip_mscount;
        mach_port_rights_t ip_srights;
        mach_port_rights_t ip_sorights;
 
        struct ipc_port *ip_nsrequest;
        struct ipc_port *ip_pdrequest;
-       struct ipc_port_request *ip_dnrequests;
+       struct ipc_port_request *ip_requests;
+       boolean_t ip_sprequests;
 
        unsigned int ip_pset_count;
        struct ipc_kmsg *ip_premsg;
@@ -191,6 +193,9 @@ struct ipc_port {
 
 #define        ip_kotype(port)         io_kotype(&(port)->ip_object)
 
+#define ip_full_kernel(port)   imq_full_kernel(&(port)->ip_messages) 
+#define ip_full(port)          imq_full(&(port)->ip_messages) 
+
 /*
  * JMM - Preallocation flag
  * This flag indicates that there is a message buffer preallocated for this
@@ -215,7 +220,7 @@ MACRO_BEGIN                                                         \
        (port)->ip_premsg = IKM_NULL;                                   \
 MACRO_END
 
-
+/* JMM - address alignment/packing for LP64 */
 struct ipc_port_request {
        union {
                struct ipc_port *port;
@@ -234,6 +239,17 @@ struct ipc_port_request {
 #define        ipr_soright             notify.port
 #define        ipr_name                name.name
 
+/*
+ * Use the low bits in the ipr_soright to specify the request type
+ */
+#define IPR_SOR_SPARM_MASK     1               /* send-possible armed */
+#define IPR_SOR_SPREQ_MASK     2               /* send-possible requested */
+#define IPR_SOR_SPBIT_MASK     3               /* combo */
+#define IPR_SOR_SPARMED(sor)   (((uintptr_t)(sor) & IPR_SOR_SPARM_MASK) != 0)
+#define IPR_SOR_SPREQ(sor)     (((uintptr_t)(sor) & IPR_SOR_SPREQ_MASK) != 0)
+#define IPR_SOR_PORT(sor)      ((ipc_port_t)((uintptr_t)(sor) & ~IPR_SOR_SPBIT_MASK))
+#define IPR_SOR_MAKE(p,m)      ((ipc_port_t)((uintptr_t)(p) | (m)))
+
 extern lck_grp_t       ipc_lck_grp;
 extern lck_attr_t      ipc_lck_attr;
 
@@ -297,32 +313,47 @@ extern ipc_port_timestamp_t ipc_port_timestamp(void);
                                     MACH_PORT_RIGHT_SEND,              \
                                     (ipc_object_t *) (portp))
 
-/* Allocate a dead-name request slot */
+/* Allocate a notification request slot */
 extern kern_return_t
-ipc_port_dnrequest(
+ipc_port_request_alloc(
        ipc_port_t                      port,
        mach_port_name_t                name,
        ipc_port_t                      soright,
+       boolean_t                       send_possible,
+       boolean_t                       immediate,
        ipc_port_request_index_t        *indexp);
 
-/* Grow a port's table of dead-name requests */
-extern kern_return_t ipc_port_dngrow(
+/* Grow one of a port's tables of notifcation requests */
+extern kern_return_t ipc_port_request_grow(
        ipc_port_t                      port,
        ipc_table_elems_t               target_size);
 
-/* Cancel a dead-name request and return the send-once right */
-extern ipc_port_t ipc_port_dncancel(
+/* Return the type(s) of notification requests outstanding */
+extern mach_port_type_t ipc_port_request_type(
        ipc_port_t                      port,
        mach_port_name_t                name,
        ipc_port_request_index_t        index);
 
-#define        ipc_port_dnrename(port, index, oname, nname)                    \
+/* Cancel a notification request and return the send-once right */
+extern ipc_port_t ipc_port_request_cancel(
+       ipc_port_t                      port,
+       mach_port_name_t                name,
+       ipc_port_request_index_t        index);
+
+/* Arm any delayed send-possible notification */
+extern void ipc_port_request_sparm(
+       ipc_port_t                      port,
+       mach_port_name_t                name,
+       ipc_port_request_index_t        index);
+
+/* Macros for manipulating a port's dead name notificaiton requests */
+#define        ipc_port_request_rename(port, index, oname, nname)              \
 MACRO_BEGIN                                                            \
        ipc_port_request_t ipr, table;                                  \
                                                                        \
        assert(ip_active(port));                                        \
                                                                        \
-       table = port->ip_dnrequests;                                    \
+       table = port->ip_requests;                                      \
        assert(table != IPR_NULL);                                      \
                                                                        \
        ipr = &table[index];                                            \
@@ -331,6 +362,7 @@ MACRO_BEGIN                                                         \
        ipr->ipr_name = nname;                                          \
 MACRO_END
 
+
 /* Make a port-deleted request */
 extern void ipc_port_pdrequest(
        ipc_port_t      port,
@@ -375,8 +407,11 @@ extern kern_return_t ipc_port_alloc_name(
 
 /* Generate dead name notifications */
 extern void ipc_port_dnnotify(
-       ipc_port_t              port,
-       ipc_port_request_t      dnrequests);
+       ipc_port_t              port);
+
+/* Generate send-possible notifications */
+extern void ipc_port_spnotify(
+       ipc_port_t              port);
 
 /* Destroy a port */
 extern void ipc_port_destroy(
@@ -435,6 +470,10 @@ extern void ipc_port_release_sonce(
 extern void ipc_port_release_receive(
        ipc_port_t      port);
 
+/* finalize the destruction of a port before it gets freed */
+extern void ipc_port_finalize(
+       ipc_port_t      port);
+
 /* Allocate a port in a special space */
 extern ipc_port_t ipc_port_alloc_special(
        ipc_space_t     space);