/*
- * Copyright (c) 2016-2017 Apple Inc. All rights reserved.
+ * Copyright (c) 2016-2018 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
};
struct eventhandler_entry_arg {
- union {
- /* Generic cookie object reference */
- void *ee_voidptr;
- /* Skywalk ids */
- struct {
- pid_t ee_fe_pid;
- uuid_t ee_fe_uuid;
- uuid_t ee_nx_uuid;
- } sk_ids;
- /* Generic UUID */
- uuid_t ee_uuid;
- } ee_arg;
+ uuid_t ee_fm_uuid; /* Flow manager UUID */
+ uuid_t ee_fr_uuid; /* Flow route UUID */
};
-#define ee_voidptr ee_arg.ee_voidptr
-#define ee_fe_pid ee_arg.sk_ids.ee_fe_pid
-#define ee_fe_uuid ee_arg.sk_ids.ee_fe_uuid
-#define ee_nx_uuid ee_arg.sk_ids.ee_nx_uuid
-#define ee_uuid ee_arg.ee_uuid
-
struct eventhandler_entry {
- TAILQ_ENTRY(eventhandler_entry) ee_link;
- int ee_priority;
-#define EHE_DEAD_PRIORITY (-1)
- struct eventhandler_entry_arg ee_arg;
+ TAILQ_ENTRY(eventhandler_entry) ee_link;
+ int ee_priority;
+#define EHE_DEAD_PRIORITY (-1)
+ struct eventhandler_entry_arg ee_arg;
};
+#define EVENTHANDLER_MAX_NAME 32
+
struct eventhandler_list {
- char *el_name;
- int el_flags;
-#define EHL_INITTED (1<<0)
- u_int el_runcount;
+ char el_name[EVENTHANDLER_MAX_NAME];
+ int el_flags;
+#define EHL_INITTED (1<<0)
+ u_int el_runcount;
decl_lck_mtx_data(, el_lock);
- TAILQ_ENTRY(eventhandler_list) el_link;
- TAILQ_HEAD(,eventhandler_entry) el_entries;
+ TAILQ_ENTRY(eventhandler_list) el_link;
+ TAILQ_HEAD(, eventhandler_entry) el_entries;
};
-typedef struct eventhandler_entry *eventhandler_tag;
+typedef struct eventhandler_entry *eventhandler_tag;
-#define EHL_LOCK_INIT(p) lck_mtx_init(&(p)->el_lock, el_lock_grp, el_lock_attr)
-#define EHL_LOCK(p) lck_mtx_lock(&(p)->el_lock)
-#define EHL_UNLOCK(p) lck_mtx_unlock(&(p)->el_lock)
-#define EHL_LOCK_ASSERT(p, x) LCK_MTX_ASSERT(&(p)->el_lock, x)
-#define EHL_LOCK_DESTROY(p) lck_mtx_destroy(&(p)->el_lock, el_lock_grp)
+#define EHL_LOCK_INIT(p) lck_mtx_init(&(p)->el_lock, el_lock_grp, el_lock_attr)
+#define EHL_LOCK(p) lck_mtx_lock(&(p)->el_lock)
+#define EHL_LOCK_SPIN(p) lck_mtx_lock_spin(&(p)->el_lock)
+#define EHL_LOCK_CONVERT(p) lck_mtx_convert_spin(&(p)->el_lock)
+#define EHL_UNLOCK(p) lck_mtx_unlock(&(p)->el_lock)
+#define EHL_LOCK_ASSERT(p, x) LCK_MTX_ASSERT(&(p)->el_lock, x)
+#define EHL_LOCK_DESTROY(p) lck_mtx_destroy(&(p)->el_lock, el_lock_grp)
#define evhlog(x) do { if (evh_debug >= 1) log x; } while (0)
/*
* Macro to invoke the handlers for a given event.
*/
-#define _EVENTHANDLER_INVOKE(name, list, ...) do { \
- struct eventhandler_entry *_ep; \
- struct eventhandler_entry_ ## name *_t; \
- \
- VERIFY((list)->el_flags & EHL_INITTED); \
- EHL_LOCK_ASSERT((list), LCK_MTX_ASSERT_OWNED); \
- (list)->el_runcount++; \
- VERIFY((list)->el_runcount > 0); \
- evhlog((LOG_DEBUG, "eventhandler_invoke(\"" __STRING(name) "\")")); \
- TAILQ_FOREACH(_ep, &((list)->el_entries), ee_link) { \
- if (_ep->ee_priority != EHE_DEAD_PRIORITY) { \
- EHL_UNLOCK((list)); \
- _t = (struct eventhandler_entry_ ## name *)_ep; \
- evhlog((LOG_DEBUG, "eventhandler_invoke: executing %p", \
- VM_KERNEL_UNSLIDE((void *)_t->eh_func))); \
- _t->eh_func(_ep->ee_arg , ## __VA_ARGS__); \
- EHL_LOCK((list)); \
- } \
- } \
- KASSERT((list)->el_runcount > 0, \
- ("eventhandler_invoke: runcount underflow")); \
- (list)->el_runcount--; \
- if ((list)->el_runcount == 0) \
- eventhandler_prune_list(list); \
- EHL_UNLOCK((list)); \
+#define _EVENTHANDLER_INVOKE(name, list, ...) do { \
+ struct eventhandler_entry *_ep; \
+ struct eventhandler_entry_ ## name *_t; \
+ \
+ VERIFY((list)->el_flags & EHL_INITTED); \
+ EHL_LOCK_ASSERT((list), LCK_MTX_ASSERT_OWNED); \
+ (list)->el_runcount++; \
+ VERIFY((list)->el_runcount > 0); \
+ evhlog((LOG_DEBUG, "eventhandler_invoke(\"" __STRING(name) "\")")); \
+ TAILQ_FOREACH(_ep, &((list)->el_entries), ee_link) { \
+ if (_ep->ee_priority != EHE_DEAD_PRIORITY) { \
+ EHL_UNLOCK((list)); \
+ _t = (struct eventhandler_entry_ ## name *)_ep; \
+ evhlog((LOG_DEBUG, "eventhandler_invoke: executing %p", \
+ VM_KERNEL_UNSLIDE((void *)_t->eh_func))); \
+ _t->eh_func(_ep->ee_arg , ## __VA_ARGS__); \
+ EHL_LOCK_SPIN((list)); \
+ } \
+ } \
+ VERIFY((list)->el_runcount > 0); \
+ (list)->el_runcount--; \
+ if ((list)->el_runcount == 0) { \
+ EHL_LOCK_CONVERT((list)); \
+ eventhandler_prune_list(list); \
+ } \
+ EHL_UNLOCK((list)); \
} while (0)
/*
* Slow handlers need to be declared, but do not need to be defined. The
* declaration must be in scope wherever the handler is to be invoked.
*/
-#define EVENTHANDLER_DECLARE(name, type) \
-struct eventhandler_entry_ ## name \
-{ \
- struct eventhandler_entry ee; \
- type eh_func; \
-}; \
+#define EVENTHANDLER_DECLARE(name, type) \
+struct eventhandler_entry_ ## name \
+{ \
+ struct eventhandler_entry ee; \
+ type eh_func; \
+}; \
struct __hack
/*
* XXX EVENTHANDLER_DEFINE by itself doesn't do much on XNU
- * All it does is that it declares the static eventhandler_tag
+ * All it does is that it declares the static eventhandler_tag
* and defines an init routine that still needs to called to put the
* event and callback on the list.
- */
-#define EVENTHANDLER_DEFINE(evthdlr_ref, name, func, arg, priority) \
- static eventhandler_tag name ## _tag; \
- static void name ## _evh_init(void *ctx) \
- { \
- name ## _tag = EVENTHANDLER_REGISTER(evthdlr_ref, name, func, ctx, \
- priority); \
- } \
- SYSINIT(name ## _evh_init, SI_SUB_CONFIGURE, SI_ORDER_ANY, \
- name ## _evh_init, arg); \
+ */
+#define EVENTHANDLER_DEFINE(evthdlr_ref, name, func, arg, priority) \
+ static eventhandler_tag name ## _tag; \
+ static void name ## _evh_init(void *ctx) \
+ { \
+ name ## _tag = EVENTHANDLER_REGISTER(evthdlr_ref, name, func, ctx, \
+ priority); \
+ } \
+ SYSINIT(name ## _evh_init, SI_SUB_CONFIGURE, SI_ORDER_ANY, \
+ name ## _evh_init, arg); \
struct __hack
-#define EVENTHANDLER_INVOKE(evthdlr_ref, name, ...) \
-do { \
- struct eventhandler_list *_el; \
- \
- if ((_el = eventhandler_find_list(evthdlr_ref, #name)) != NULL) \
- _EVENTHANDLER_INVOKE(name, _el , ## __VA_ARGS__); \
+#define EVENTHANDLER_INVOKE(evthdlr_ref, name, ...) \
+do { \
+ struct eventhandler_list *_el; \
+ \
+ if ((_el = eventhandler_find_list(evthdlr_ref, #name)) != NULL) \
+ _EVENTHANDLER_INVOKE(name, _el , ## __VA_ARGS__); \
} while (0)
-#define EVENTHANDLER_REGISTER(evthdlr_ref, name, func, arg, priority) \
+#define EVENTHANDLER_REGISTER(evthdlr_ref, name, func, arg, priority) \
eventhandler_register(evthdlr_ref, NULL, #name, func, arg, priority)
-#define EVENTHANDLER_DEREGISTER(evthdlr_ref, name, tag) \
-do { \
- struct eventhandler_list *_el; \
- \
- if ((_el = eventhandler_find_list(evthdlr_ref, #name)) != NULL) \
- eventhandler_deregister(_el, tag); \
+#define EVENTHANDLER_DEREGISTER(evthdlr_ref, name, tag) \
+do { \
+ struct eventhandler_list *_el; \
+ \
+ if ((_el = eventhandler_find_list(evthdlr_ref, #name)) != NULL) \
+ eventhandler_deregister(_el, tag); \
} while(0)
void eventhandler_init(void);
+extern void eventhandler_reap_caches(boolean_t);
eventhandler_tag eventhandler_register(struct eventhandler_lists_ctxt *evthdlr_lists_ctxt,
struct eventhandler_list *list, const char *name, void *func, struct eventhandler_entry_arg arg, int priority);
void eventhandler_deregister(struct eventhandler_list *list,
eventhandler_tag tag);
struct eventhandler_list *eventhandler_find_list(
- struct eventhandler_lists_ctxt *evthdlr_lists_ctxt, const char *name);
+ struct eventhandler_lists_ctxt *evthdlr_lists_ctxt, const char *name);
void eventhandler_prune_list(struct eventhandler_list *list);
void eventhandler_lists_ctxt_init(struct eventhandler_lists_ctxt *evthdlr_lists_ctxt);
void eventhandler_lists_ctxt_destroy(struct eventhandler_lists_ctxt *evthdlr_lists_ctxt);
/* Generic priority levels */
-#define EVENTHANDLER_PRI_FIRST 0
-#define EVENTHANDLER_PRI_ANY 10000
-#define EVENTHANDLER_PRI_LAST 20000
+#define EVENTHANDLER_PRI_FIRST 0
+#define EVENTHANDLER_PRI_ANY 10000
+#define EVENTHANDLER_PRI_LAST 20000
#endif /* _SYS_EVENTHANDLER_H_ */
projects / apple / xnu.git / blobdiff