X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/cf7d32b81c573a0536dc4da4157f9c26f8d0bed3..7e41aa883dd258f888d0470250eead40a53ef1f5:/osfmk/ipc/ipc_mqueue.h?ds=sidebyside diff --git a/osfmk/ipc/ipc_mqueue.h b/osfmk/ipc/ipc_mqueue.h index 1fa4294f8..401a3cae3 100644 --- a/osfmk/ipc/ipc_mqueue.h +++ b/osfmk/ipc/ipc_mqueue.h @@ -73,51 +73,71 @@ #include #include #include -#include +#include +#include #include #include #include +#include + typedef struct ipc_mqueue { union { struct { - struct wait_queue wait_queue; + struct waitq waitq; struct ipc_kmsg_queue messages; - mach_port_msgcount_t msgcount; - mach_port_msgcount_t qlimit; - mach_port_seqno_t seqno; - boolean_t fullwaiters; - } port; - struct wait_queue_set set_queue; + mach_port_seqno_t seqno; + mach_port_name_t receiver_name; + uint16_t msgcount; + uint16_t qlimit; + } __attribute__((__packed__)) port; + struct { + struct waitq_set setq; + mach_port_name_t local_name; + } __attribute__((__packed__)) pset; } data; } *ipc_mqueue_t; #define IMQ_NULL ((ipc_mqueue_t) 0) -#define imq_wait_queue data.port.wait_queue +#define imq_wait_queue data.port.waitq #define imq_messages data.port.messages #define imq_msgcount data.port.msgcount #define imq_qlimit data.port.qlimit #define imq_seqno data.port.seqno -#define imq_fullwaiters data.port.fullwaiters +#define imq_receiver_name data.port.receiver_name + +/* + * we can use the 'eventmask' bits of the waitq b/c + * they are only used by global queues + */ +#define imq_fullwaiters data.port.waitq.waitq_eventmask +#define imq_in_pset data.port.waitq.waitq_set_id + +#define imq_set_queue data.pset.setq +#define imq_local_name data.pset.local_name +#define imq_is_set(mq) waitqs_is_set(&(mq)->imq_set_queue) -#define imq_set_queue data.set_queue -#define imq_setlinks data.set_queue.wqs_setlinks -#define imq_is_set(mq) wait_queue_is_set(&(mq)->imq_set_queue) +#define imq_lock(mq) waitq_lock(&(mq)->imq_wait_queue) +#define imq_lock_try(mq) waitq_lock_try(&(mq)->imq_wait_queue) +#define imq_unlock(mq) waitq_unlock(&(mq)->imq_wait_queue) +#define imq_held(mq) waitq_held(&(mq)->imq_wait_queue) -#define imq_lock(mq) wait_queue_lock(&(mq)->imq_wait_queue) -#define imq_lock_try(mq) wait_queue_lock_try(&(mq)->imq_wait_queue) -#define imq_unlock(mq) wait_queue_unlock(&(mq)->imq_wait_queue) -#define imq_held(mq) wait_queue_held(&(mq)->imq_wait_queue) +extern void imq_reserve_and_lock(ipc_mqueue_t mq, + uint64_t *reserved_prepost, spl_t *spl); + +extern void imq_release_and_unlock(ipc_mqueue_t mq, + uint64_t reserved_prepost, spl_t spl); #define imq_full(mq) ((mq)->imq_msgcount >= (mq)->imq_qlimit) +#define imq_full_kernel(mq) ((mq)->imq_msgcount >= MACH_PORT_QLIMIT_KERNEL) extern int ipc_mqueue_full; -extern int ipc_mqueue_rcv; +// extern int ipc_mqueue_rcv; #define IPC_MQUEUE_FULL CAST_EVENT64_T(&ipc_mqueue_full) -#define IPC_MQUEUE_RECEIVE CAST_EVENT64_T(&ipc_mqueue_rcv) +#define IPC_MQUEUE_RECEIVE NO_EVENT64 /* * Exported interfaces @@ -126,7 +146,12 @@ extern int ipc_mqueue_rcv; /* Initialize a newly-allocated message queue */ extern void ipc_mqueue_init( ipc_mqueue_t mqueue, - boolean_t is_set); + boolean_t is_set, + uint64_t *reserved_link); + +/* de-initialize / cleanup an mqueue (specifically waitq resources) */ +extern void ipc_mqueue_deinit( + ipc_mqueue_t mqueue); /* destroy an mqueue */ extern void ipc_mqueue_destroy( @@ -139,7 +164,9 @@ extern void ipc_mqueue_changed( /* Add the specific mqueue as a member of the set */ extern kern_return_t ipc_mqueue_add( ipc_mqueue_t mqueue, - ipc_mqueue_t set_mqueue); + ipc_mqueue_t set_mqueue, + uint64_t *reserved_link, + uint64_t *reserved_prepost); /* Check to see if mqueue is member of set_mqueue */ extern boolean_t ipc_mqueue_member( @@ -161,6 +188,14 @@ extern void ipc_mqueue_remove_all( /* Send a message to a port */ extern mach_msg_return_t ipc_mqueue_send( + ipc_mqueue_t mqueue, + ipc_kmsg_t kmsg, + mach_msg_option_t option, + mach_msg_timeout_t timeout_val, + spl_t s); + +/* check for queue send queue full of a port */ +extern mach_msg_return_t ipc_mqueue_preflight_send( ipc_mqueue_t mqueue, ipc_kmsg_t kmsg, mach_msg_option_t option, @@ -179,20 +214,52 @@ extern void ipc_mqueue_receive( mach_msg_timeout_t timeout_val, int interruptible); +/* Receive a message from a message queue using a specified thread */ +extern wait_result_t ipc_mqueue_receive_on_thread( + ipc_mqueue_t mqueue, + mach_msg_option_t option, + mach_msg_size_t max_size, + mach_msg_timeout_t rcv_timeout, + int interruptible, + thread_t thread); + /* Continuation routine for message receive */ extern void ipc_mqueue_receive_continue( void *param, wait_result_t wresult); /* Select a message from a queue and try to post it to ourself */ -extern void ipc_mqueue_select( - ipc_mqueue_t mqueue, +extern void ipc_mqueue_select_on_thread( + ipc_mqueue_t port_mq, + ipc_mqueue_t set_mq, mach_msg_option_t option, - mach_msg_size_t max_size); + mach_msg_size_t max_size, + thread_t thread); + +/* Peek into a messaqe queue to see if there are messages */ +extern unsigned ipc_mqueue_peek( + ipc_mqueue_t mqueue, + mach_port_seqno_t *msg_seqnop, + mach_msg_size_t *msg_sizep, + mach_msg_id_t *msg_idp, + mach_msg_max_trailer_t *msg_trailerp); + +/* Peek into a messaqe queue set to see if there are queues with messages */ +extern unsigned ipc_mqueue_set_peek( + ipc_mqueue_t mqueue); + +/* Gather the names of member port for a given set */ +extern void ipc_mqueue_set_gather_member_names( + ipc_space_t space, + ipc_mqueue_t set_mq, + ipc_entry_num_t maxnames, + mach_port_name_t *names, + ipc_entry_num_t *actualp); /* Clear a message count reservation */ extern void ipc_mqueue_release_msgcount( - ipc_mqueue_t mqueue); + ipc_mqueue_t port_mq, + ipc_mqueue_t set_mq); /* Change a queue limit */ extern void ipc_mqueue_set_qlimit(