// Contains exported global data and initialization & other routines that must
// only exist once in the shared library even when resolvers are used.
+// NOTE: this file must not contain any atomic operations
+
#include "internal.h"
#if HAVE_MACH
void
dispatch_atfork_prepare(void)
{
+ _os_object_atfork_prepare();
}
DISPATCH_EXPORT DISPATCH_NOTHROW
void
dispatch_atfork_parent(void)
{
+ _os_object_atfork_parent();
+}
+
+DISPATCH_EXPORT DISPATCH_NOTHROW
+void
+dispatch_atfork_child(void)
+{
+ _os_object_atfork_child();
+ _voucher_atfork_child();
+ _dispatch_event_loop_atfork_child();
+ if (_dispatch_is_multithreaded_inline()) {
+ _dispatch_child_of_unsafe_fork = true;
+ }
+ _dispatch_queue_atfork_child();
+ // clear the _PROHIBIT and _MULTITHREADED bits if set
+ _dispatch_unsafe_fork = 0;
+}
+
+int
+_dispatch_sigmask(void)
+{
+ sigset_t mask;
+ int r = 0;
+
+ /* Workaround: 6269619 Not all signals can be delivered on any thread */
+ r |= sigfillset(&mask);
+ r |= sigdelset(&mask, SIGILL);
+ r |= sigdelset(&mask, SIGTRAP);
+#if HAVE_DECL_SIGEMT
+ r |= sigdelset(&mask, SIGEMT);
+#endif
+ r |= sigdelset(&mask, SIGFPE);
+ r |= sigdelset(&mask, SIGBUS);
+ r |= sigdelset(&mask, SIGSEGV);
+ r |= sigdelset(&mask, SIGSYS);
+ r |= sigdelset(&mask, SIGPIPE);
+ r |= sigdelset(&mask, SIGPROF);
+ r |= pthread_sigmask(SIG_BLOCK, &mask, NULL);
+ return dispatch_assume_zero(r);
}
#pragma mark -
#pragma mark dispatch_globals
+DISPATCH_HIDE_SYMBOL(dispatch_assert_queue, 10.12, 10.0, 10.0, 3.0);
+DISPATCH_HIDE_SYMBOL(dispatch_assert_queue_not, 10.12, 10.0, 10.0, 3.0);
+DISPATCH_HIDE_SYMBOL(dispatch_queue_create_with_target, 10.12, 10.0, 10.0, 3.0);
+
#if DISPATCH_COCOA_COMPAT
-void (*dispatch_begin_thread_4GC)(void);
-void (*dispatch_end_thread_4GC)(void);
void *(*_dispatch_begin_NSAutoReleasePool)(void);
void (*_dispatch_end_NSAutoReleasePool)(void *);
#endif
-#if !DISPATCH_USE_DIRECT_TSD
+#if DISPATCH_USE_THREAD_LOCAL_STORAGE
+__thread struct dispatch_tsd __dispatch_tsd;
+pthread_key_t __dispatch_tsd_key;
+#elif !DISPATCH_USE_DIRECT_TSD
pthread_key_t dispatch_queue_key;
-pthread_key_t dispatch_sema4_key;
+pthread_key_t dispatch_frame_key;
pthread_key_t dispatch_cache_key;
-pthread_key_t dispatch_io_key;
-pthread_key_t dispatch_apply_key;
-pthread_key_t dispatch_defaultpriority_key;
+pthread_key_t dispatch_context_key;
+pthread_key_t dispatch_pthread_root_queue_observer_hooks_key;
+pthread_key_t dispatch_basepri_key;
#if DISPATCH_INTROSPECTION
pthread_key_t dispatch_introspection_key;
#elif DISPATCH_PERF_MON
pthread_key_t dispatch_bcounter_key;
#endif
-#endif // !DISPATCH_USE_DIRECT_TSD
+pthread_key_t dispatch_wlh_key;
+pthread_key_t dispatch_voucher_key;
+pthread_key_t dispatch_deferred_items_key;
+#endif // !DISPATCH_USE_DIRECT_TSD && !DISPATCH_USE_THREAD_LOCAL_STORAGE
#if VOUCHER_USE_MACH_VOUCHER
dispatch_once_t _voucher_task_mach_voucher_pred;
mach_voucher_t _voucher_task_mach_voucher;
-_voucher_atm_t _voucher_task_atm;
-_voucher_activity_t _voucher_activity_default;
+#if !VOUCHER_USE_EMPTY_MACH_BASE_VOUCHER
+mach_voucher_t _voucher_default_task_mach_voucher;
#endif
-voucher_activity_mode_t _voucher_activity_mode;
+dispatch_once_t _firehose_task_buffer_pred;
+firehose_buffer_t _firehose_task_buffer;
+const uint32_t _firehose_spi_version = OS_FIREHOSE_SPI_VERSION;
+uint64_t _voucher_unique_pid;
+voucher_activity_hooks_t _voucher_libtrace_hooks;
+dispatch_mach_t _voucher_activity_debug_channel;
+#endif
+#if HAVE_PTHREAD_WORKQUEUE_QOS && DISPATCH_DEBUG
int _dispatch_set_qos_class_enabled;
-
-
-DISPATCH_NOINLINE
-voucher_activity_mode_t
-voucher_activity_get_mode(void)
-{
- return _voucher_activity_mode;
-}
-
-void
-voucher_activity_set_mode_4libtrace(voucher_activity_mode_t mode)
-{
- if (_voucher_activity_disabled()) return;
- _voucher_activity_mode = mode;
-}
+#endif
+#if DISPATCH_USE_KEVENT_WORKQUEUE && DISPATCH_USE_MGR_THREAD
+int _dispatch_kevent_workqueue_enabled;
+#endif
DISPATCH_HW_CONFIG();
-bool _dispatch_safe_fork = true, _dispatch_child_of_unsafe_fork;
+uint8_t _dispatch_unsafe_fork;
+bool _dispatch_child_of_unsafe_fork;
+#if DISPATCH_USE_MEMORYPRESSURE_SOURCE
+bool _dispatch_memory_warn;
+int _dispatch_continuation_cache_limit = DISPATCH_CONTINUATION_CACHE_LIMIT;
+#endif
DISPATCH_NOINLINE
bool
_dispatch_is_multithreaded(void)
{
- return !_dispatch_safe_fork;
+ return _dispatch_is_multithreaded_inline();
}
DISPATCH_NOINLINE
}
const struct dispatch_queue_offsets_s dispatch_queue_offsets = {
- .dqo_version = 5,
+ .dqo_version = 6,
.dqo_label = offsetof(struct dispatch_queue_s, dq_label),
.dqo_label_size = sizeof(((dispatch_queue_t)NULL)->dq_label),
.dqo_flags = 0,
.dqo_serialnum_size = sizeof(((dispatch_queue_t)NULL)->dq_serialnum),
.dqo_width = offsetof(struct dispatch_queue_s, dq_width),
.dqo_width_size = sizeof(((dispatch_queue_t)NULL)->dq_width),
- .dqo_running = offsetof(struct dispatch_queue_s, dq_running),
- .dqo_running_size = sizeof(((dispatch_queue_t)NULL)->dq_running),
- .dqo_suspend_cnt = offsetof(struct dispatch_queue_s, do_suspend_cnt),
- .dqo_suspend_cnt_size = sizeof(((dispatch_queue_t)NULL)->do_suspend_cnt),
+ .dqo_running = 0,
+ .dqo_running_size = 0,
+ .dqo_suspend_cnt = 0,
+ .dqo_suspend_cnt_size = 0,
.dqo_target_queue = offsetof(struct dispatch_queue_s, do_targetq),
.dqo_target_queue_size = sizeof(((dispatch_queue_t)NULL)->do_targetq),
- .dqo_priority = offsetof(struct dispatch_queue_s, dq_priority),
- .dqo_priority_size = sizeof(((dispatch_queue_t)NULL)->dq_priority),
+ .dqo_priority = 0,
+ .dqo_priority_size = 0,
};
-#if VOUCHER_USE_MACH_VOUCHER
-const struct voucher_offsets_s voucher_offsets = {
- .vo_version = 1,
- .vo_activity_ids_count = offsetof(struct voucher_s, v_activities),
- .vo_activity_ids_count_size = sizeof(((voucher_t)NULL)->v_activities),
- .vo_activity_ids_array = (uint16_t)_voucher_activity_ids((voucher_t)(NULL)),
- .vo_activity_ids_array_entry_size = sizeof(voucher_activity_id_t),
-};
-#else // VOUCHER_USE_MACH_VOUCHER
-const struct voucher_offsets_s voucher_offsets = {
- .vo_version = 0,
-};
-#endif // VOUCHER_USE_MACH_VOUCHER
-
#if DISPATCH_USE_DIRECT_TSD
const struct dispatch_tsd_indexes_s dispatch_tsd_indexes = {
.dti_version = 2,
.dti_voucher_index = dispatch_voucher_key,
.dti_qos_class_index = dispatch_priority_key,
};
-#else // DISPATCH_USE_DIRECT_TSD
-#error Not implemented on this platform
#endif // DISPATCH_USE_DIRECT_TSD
// 6618342 Contact the team that owns the Instrument DTrace probe before
// renaming this symbol
DISPATCH_CACHELINE_ALIGN
struct dispatch_queue_s _dispatch_main_q = {
- .do_vtable = DISPATCH_VTABLE(queue),
+ DISPATCH_GLOBAL_OBJECT_HEADER(queue_main),
#if !DISPATCH_USE_RESOLVERS
.do_targetq = &_dispatch_root_queues[
DISPATCH_ROOT_QUEUE_IDX_DEFAULT_QOS_OVERCOMMIT],
#endif
- .do_ref_cnt = DISPATCH_OBJECT_GLOBAL_REFCNT,
- .do_xref_cnt = DISPATCH_OBJECT_GLOBAL_REFCNT,
- .do_suspend_cnt = DISPATCH_OBJECT_SUSPEND_LOCK,
+ .dq_state = DISPATCH_QUEUE_STATE_INIT_VALUE(1) |
+ DISPATCH_QUEUE_ROLE_BASE_ANON,
.dq_label = "com.apple.main-thread",
- .dq_running = 1,
- .dq_width = 1,
- .dq_is_thread_bound = 1,
- .dq_override_voucher = DISPATCH_NO_VOUCHER,
+ .dq_atomic_flags = DQF_THREAD_BOUND | DQF_CANNOT_TRYSYNC | DQF_WIDTH(1),
.dq_serialnum = 1,
};
#pragma mark -
#pragma mark dispatch_queue_attr_t
-#define DISPATCH_QUEUE_ATTR_INITIALIZER(qos, prio, overcommit, concurrent) \
- { \
- .do_vtable = DISPATCH_VTABLE(queue_attr), \
- .do_ref_cnt = DISPATCH_OBJECT_GLOBAL_REFCNT, \
- .do_xref_cnt = DISPATCH_OBJECT_GLOBAL_REFCNT, \
- .do_next = DISPATCH_OBJECT_LISTLESS, \
- .dqa_qos_class = (qos), \
- .dqa_relative_priority = (qos) ? (prio) : 0, \
- .dqa_overcommit = _dispatch_queue_attr_overcommit_##overcommit, \
- .dqa_concurrent = (concurrent), \
- }
+#define DISPATCH_QUEUE_ATTR_INIT(qos, prio, overcommit, freq, concurrent, \
+ inactive) \
+ { \
+ DISPATCH_GLOBAL_OBJECT_HEADER(queue_attr), \
+ .dqa_qos_and_relpri = (_dispatch_priority_make(qos, prio) & \
+ DISPATCH_PRIORITY_REQUESTED_MASK), \
+ .dqa_overcommit = _dispatch_queue_attr_overcommit_##overcommit, \
+ .dqa_autorelease_frequency = DISPATCH_AUTORELEASE_FREQUENCY_##freq, \
+ .dqa_concurrent = (concurrent), \
+ .dqa_inactive = (inactive), \
+ }
-#define DISPATCH_QUEUE_ATTR_KIND_INIT(qos, prio) \
- { \
- [DQA_INDEX_NON_OVERCOMMIT][DQA_INDEX_CONCURRENT] = \
- DISPATCH_QUEUE_ATTR_INITIALIZER(qos, prio, disabled, 1), \
- [DQA_INDEX_NON_OVERCOMMIT][DQA_INDEX_SERIAL] = \
- DISPATCH_QUEUE_ATTR_INITIALIZER(qos, prio, disabled, 0), \
- [DQA_INDEX_OVERCOMMIT][DQA_INDEX_CONCURRENT] = \
- DISPATCH_QUEUE_ATTR_INITIALIZER(qos, prio, enabled, 1), \
- [DQA_INDEX_OVERCOMMIT][DQA_INDEX_SERIAL] = \
- DISPATCH_QUEUE_ATTR_INITIALIZER(qos, prio, enabled, 0), \
- [DQA_INDEX_UNSPECIFIED_OVERCOMMIT][DQA_INDEX_CONCURRENT] = \
- DISPATCH_QUEUE_ATTR_INITIALIZER(qos, prio, unspecified, 1),\
- [DQA_INDEX_UNSPECIFIED_OVERCOMMIT][DQA_INDEX_SERIAL] = \
- DISPATCH_QUEUE_ATTR_INITIALIZER(qos, prio, unspecified, 0),\
- }
+#define DISPATCH_QUEUE_ATTR_ACTIVE_INIT(qos, prio, overcommit, freq, \
+ concurrent) \
+ { \
+ [DQA_INDEX_ACTIVE] = DISPATCH_QUEUE_ATTR_INIT( \
+ qos, prio, overcommit, freq, concurrent, false), \
+ [DQA_INDEX_INACTIVE] = DISPATCH_QUEUE_ATTR_INIT( \
+ qos, prio, overcommit, freq, concurrent, true), \
+ }
+
+#define DISPATCH_QUEUE_ATTR_OVERCOMMIT_INIT(qos, prio, overcommit) \
+ { \
+ [DQA_INDEX_AUTORELEASE_FREQUENCY_INHERIT][DQA_INDEX_CONCURRENT] = \
+ DISPATCH_QUEUE_ATTR_ACTIVE_INIT( \
+ qos, prio, overcommit, INHERIT, 1), \
+ [DQA_INDEX_AUTORELEASE_FREQUENCY_INHERIT][DQA_INDEX_SERIAL] = \
+ DISPATCH_QUEUE_ATTR_ACTIVE_INIT( \
+ qos, prio, overcommit, INHERIT, 0), \
+ [DQA_INDEX_AUTORELEASE_FREQUENCY_WORK_ITEM][DQA_INDEX_CONCURRENT] = \
+ DISPATCH_QUEUE_ATTR_ACTIVE_INIT( \
+ qos, prio, overcommit, WORK_ITEM, 1), \
+ [DQA_INDEX_AUTORELEASE_FREQUENCY_WORK_ITEM][DQA_INDEX_SERIAL] = \
+ DISPATCH_QUEUE_ATTR_ACTIVE_INIT( \
+ qos, prio, overcommit, WORK_ITEM, 0), \
+ [DQA_INDEX_AUTORELEASE_FREQUENCY_NEVER][DQA_INDEX_CONCURRENT] = \
+ DISPATCH_QUEUE_ATTR_ACTIVE_INIT( \
+ qos, prio, overcommit, NEVER, 1), \
+ [DQA_INDEX_AUTORELEASE_FREQUENCY_NEVER][DQA_INDEX_SERIAL] = \
+ DISPATCH_QUEUE_ATTR_ACTIVE_INIT(\
+ qos, prio, overcommit, NEVER, 0), \
+ }
#define DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, prio) \
- [prio] = DISPATCH_QUEUE_ATTR_KIND_INIT(qos, -(prio))
+ [prio] = { \
+ [DQA_INDEX_UNSPECIFIED_OVERCOMMIT] = \
+ DISPATCH_QUEUE_ATTR_OVERCOMMIT_INIT(qos, -(prio), unspecified),\
+ [DQA_INDEX_NON_OVERCOMMIT] = \
+ DISPATCH_QUEUE_ATTR_OVERCOMMIT_INIT(qos, -(prio), disabled), \
+ [DQA_INDEX_OVERCOMMIT] = \
+ DISPATCH_QUEUE_ATTR_OVERCOMMIT_INIT(qos, -(prio), enabled), \
+ }
#define DISPATCH_QUEUE_ATTR_PRIO_INIT(qos) \
- { \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 0), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 1), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 2), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 3), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 4), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 5), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 6), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 7), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 8), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 9), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 10), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 11), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 12), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 13), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 14), \
- DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 15), \
- }
+ { \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 0), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 1), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 2), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 3), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 4), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 5), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 6), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 7), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 8), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 9), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 10), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 11), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 12), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 13), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 14), \
+ DISPATCH_QUEUE_ATTR_PRIO_INITIALIZER(qos, 15), \
+ }
#define DISPATCH_QUEUE_ATTR_QOS_INITIALIZER(qos) \
- [DQA_INDEX_QOS_CLASS_##qos] = \
- DISPATCH_QUEUE_ATTR_PRIO_INIT(_DISPATCH_QOS_CLASS_##qos)
+ [DQA_INDEX_QOS_CLASS_##qos] = \
+ DISPATCH_QUEUE_ATTR_PRIO_INIT(DISPATCH_QOS_##qos)
// DISPATCH_QUEUE_CONCURRENT resp. _dispatch_queue_attr_concurrent is aliased
-// to array member [0][0][0][0] and their properties must match!
+// to array member [0][0][0][0][0][0] and their properties must match!
const struct dispatch_queue_attr_s _dispatch_queue_attrs[]
[DISPATCH_QUEUE_ATTR_PRIO_COUNT]
[DISPATCH_QUEUE_ATTR_OVERCOMMIT_COUNT]
- [DISPATCH_QUEUE_ATTR_CONCURRENCY_COUNT] = {
+ [DISPATCH_QUEUE_ATTR_AUTORELEASE_FREQUENCY_COUNT]
+ [DISPATCH_QUEUE_ATTR_CONCURRENCY_COUNT]
+ [DISPATCH_QUEUE_ATTR_INACTIVE_COUNT] = {
DISPATCH_QUEUE_ATTR_QOS_INITIALIZER(UNSPECIFIED),
DISPATCH_QUEUE_ATTR_QOS_INITIALIZER(MAINTENANCE),
DISPATCH_QUEUE_ATTR_QOS_INITIALIZER(BACKGROUND),
DISPATCH_QUEUE_ATTR_QOS_INITIALIZER(USER_INTERACTIVE),
};
+#if DISPATCH_VARIANT_STATIC
+// <rdar://problem/16778703>
+struct dispatch_queue_attr_s _dispatch_queue_attr_concurrent =
+ DISPATCH_QUEUE_ATTR_INIT(QOS_CLASS_UNSPECIFIED, 0,
+ unspecified, INHERIT, 1, false);
+#endif // DISPATCH_VARIANT_STATIC
+
+// _dispatch_queue_attr_concurrent is aliased using libdispatch.aliases
+// and the -alias_list linker option on Darwin but needs to be done manually
+// for other platforms.
+#ifndef __APPLE__
+extern struct dispatch_queue_attr_s _dispatch_queue_attr_concurrent
+ __attribute__((__alias__("_dispatch_queue_attrs")));
+#endif
#pragma mark -
#pragma mark dispatch_vtables
DISPATCH_VTABLE_INSTANCE(group,
.do_type = DISPATCH_GROUP_TYPE,
.do_kind = "group",
- .do_dispose = _dispatch_semaphore_dispose,
- .do_debug = _dispatch_semaphore_debug,
+ .do_dispose = _dispatch_group_dispose,
+ .do_debug = _dispatch_group_debug,
);
DISPATCH_VTABLE_INSTANCE(queue,
- .do_type = DISPATCH_QUEUE_TYPE,
+ .do_type = DISPATCH_QUEUE_LEGACY_TYPE,
.do_kind = "queue",
.do_dispose = _dispatch_queue_dispose,
+ .do_suspend = _dispatch_queue_suspend,
+ .do_resume = _dispatch_queue_resume,
+ .do_push = _dispatch_queue_push,
+ .do_invoke = _dispatch_queue_invoke,
+ .do_wakeup = _dispatch_queue_wakeup,
+ .do_debug = dispatch_queue_debug,
+ .do_set_targetq = _dispatch_queue_set_target_queue,
+);
+
+DISPATCH_VTABLE_SUBCLASS_INSTANCE(queue_serial, queue,
+ .do_type = DISPATCH_QUEUE_SERIAL_TYPE,
+ .do_kind = "serial-queue",
+ .do_dispose = _dispatch_queue_dispose,
+ .do_suspend = _dispatch_queue_suspend,
+ .do_resume = _dispatch_queue_resume,
+ .do_finalize_activation = _dispatch_queue_finalize_activation,
+ .do_push = _dispatch_queue_push,
.do_invoke = _dispatch_queue_invoke,
- .do_probe = _dispatch_queue_probe,
+ .do_wakeup = _dispatch_queue_wakeup,
.do_debug = dispatch_queue_debug,
+ .do_set_targetq = _dispatch_queue_set_target_queue,
);
+DISPATCH_VTABLE_SUBCLASS_INSTANCE(queue_concurrent, queue,
+ .do_type = DISPATCH_QUEUE_CONCURRENT_TYPE,
+ .do_kind = "concurrent-queue",
+ .do_dispose = _dispatch_queue_dispose,
+ .do_suspend = _dispatch_queue_suspend,
+ .do_resume = _dispatch_queue_resume,
+ .do_finalize_activation = _dispatch_queue_finalize_activation,
+ .do_push = _dispatch_queue_push,
+ .do_invoke = _dispatch_queue_invoke,
+ .do_wakeup = _dispatch_queue_wakeup,
+ .do_debug = dispatch_queue_debug,
+ .do_set_targetq = _dispatch_queue_set_target_queue,
+);
+
+
DISPATCH_VTABLE_SUBCLASS_INSTANCE(queue_root, queue,
- .do_type = DISPATCH_QUEUE_ROOT_TYPE,
+ .do_type = DISPATCH_QUEUE_GLOBAL_ROOT_TYPE,
.do_kind = "global-queue",
.do_dispose = _dispatch_pthread_root_queue_dispose,
- .do_probe = _dispatch_root_queue_probe,
+ .do_push = _dispatch_root_queue_push,
+ .do_invoke = NULL,
+ .do_wakeup = _dispatch_root_queue_wakeup,
+ .do_debug = dispatch_queue_debug,
+);
+
+
+DISPATCH_VTABLE_SUBCLASS_INSTANCE(queue_main, queue,
+ .do_type = DISPATCH_QUEUE_SERIAL_TYPE,
+ .do_kind = "main-queue",
+ .do_dispose = _dispatch_queue_dispose,
+ .do_push = _dispatch_queue_push,
+ .do_invoke = _dispatch_queue_invoke,
+ .do_wakeup = _dispatch_main_queue_wakeup,
.do_debug = dispatch_queue_debug,
);
DISPATCH_VTABLE_SUBCLASS_INSTANCE(queue_runloop, queue,
- .do_type = DISPATCH_QUEUE_ROOT_TYPE,
+ .do_type = DISPATCH_QUEUE_RUNLOOP_TYPE,
.do_kind = "runloop-queue",
.do_dispose = _dispatch_runloop_queue_dispose,
+ .do_push = _dispatch_queue_push,
.do_invoke = _dispatch_queue_invoke,
- .do_probe = _dispatch_runloop_queue_probe,
+ .do_wakeup = _dispatch_runloop_queue_wakeup,
.do_debug = dispatch_queue_debug,
);
DISPATCH_VTABLE_SUBCLASS_INSTANCE(queue_mgr, queue,
.do_type = DISPATCH_QUEUE_MGR_TYPE,
.do_kind = "mgr-queue",
+ .do_push = _dispatch_mgr_queue_push,
.do_invoke = _dispatch_mgr_thread,
- .do_probe = _dispatch_mgr_queue_probe,
+ .do_wakeup = _dispatch_mgr_queue_wakeup,
.do_debug = dispatch_queue_debug,
);
.do_type = DISPATCH_QUEUE_SPECIFIC_TYPE,
.do_kind = "queue-context",
.do_dispose = _dispatch_queue_specific_queue_dispose,
- .do_invoke = (void*)_dispatch_queue_invoke,
- .do_probe = (void *)_dispatch_queue_probe,
+ .do_push = (void *)_dispatch_queue_push,
+ .do_invoke = (void *)_dispatch_queue_invoke,
+ .do_wakeup = (void *)_dispatch_queue_wakeup,
.do_debug = (void *)dispatch_queue_debug,
);
.do_type = DISPATCH_SOURCE_KEVENT_TYPE,
.do_kind = "kevent-source",
.do_dispose = _dispatch_source_dispose,
+ .do_suspend = (void *)_dispatch_queue_suspend,
+ .do_resume = (void *)_dispatch_queue_resume,
+ .do_finalize_activation = _dispatch_source_finalize_activation,
+ .do_push = (void *)_dispatch_queue_push,
.do_invoke = _dispatch_source_invoke,
- .do_probe = _dispatch_source_probe,
+ .do_wakeup = _dispatch_source_wakeup,
.do_debug = _dispatch_source_debug,
+ .do_set_targetq = (void *)_dispatch_queue_set_target_queue,
);
+#if HAVE_MACH
DISPATCH_VTABLE_INSTANCE(mach,
.do_type = DISPATCH_MACH_CHANNEL_TYPE,
.do_kind = "mach-channel",
.do_dispose = _dispatch_mach_dispose,
+ .do_suspend = (void *)_dispatch_queue_suspend,
+ .do_resume = (void *)_dispatch_queue_resume,
+ .do_finalize_activation = _dispatch_mach_finalize_activation,
+ .do_push = (void *)_dispatch_queue_push,
.do_invoke = _dispatch_mach_invoke,
- .do_probe = _dispatch_mach_probe,
+ .do_wakeup = _dispatch_mach_wakeup,
.do_debug = _dispatch_mach_debug,
+ .do_set_targetq = (void *)_dispatch_queue_set_target_queue,
);
DISPATCH_VTABLE_INSTANCE(mach_msg,
.do_invoke = _dispatch_mach_msg_invoke,
.do_debug = _dispatch_mach_msg_debug,
);
+#endif // HAVE_MACH
-#if !USE_OBJC
+#if !DISPATCH_DATA_IS_BRIDGED_TO_NSDATA
DISPATCH_VTABLE_INSTANCE(data,
.do_type = DISPATCH_DATA_TYPE,
.do_kind = "data",
.do_dispose = _dispatch_data_dispose,
.do_debug = _dispatch_data_debug,
+ .do_set_targetq = (void*)_dispatch_data_set_target_queue,
);
#endif
.do_kind = "channel",
.do_dispose = _dispatch_io_dispose,
.do_debug = _dispatch_io_debug,
+ .do_set_targetq = _dispatch_io_set_target_queue,
);
DISPATCH_VTABLE_INSTANCE(operation,
.do_dispose = _dispatch_disk_dispose,
);
+
void
_dispatch_vtable_init(void)
{
-#if USE_OBJC
+#if OS_OBJECT_HAVE_OBJC2
// ObjC classes and dispatch vtables are co-located via linker order and
// alias files, verify correct layout during initialization rdar://10640168
- DISPATCH_OBJC_CLASS_DECL(semaphore);
- dispatch_assert((char*)DISPATCH_VTABLE(semaphore) -
- (char*)DISPATCH_OBJC_CLASS(semaphore) == 0);
dispatch_assert((char*)&DISPATCH_CONCAT(_,DISPATCH_CLASS(semaphore_vtable))
- - (char*)DISPATCH_OBJC_CLASS(semaphore) ==
- sizeof(_os_object_class_s));
+ - (char*)DISPATCH_VTABLE(semaphore) ==
+ offsetof(struct dispatch_semaphore_vtable_s, _os_obj_vtable));
#endif // USE_OBJC
}
+#pragma mark -
+#pragma mark dispatch_data globals
+
+const dispatch_block_t _dispatch_data_destructor_free = ^{
+ DISPATCH_INTERNAL_CRASH(0, "free destructor called");
+};
+
+const dispatch_block_t _dispatch_data_destructor_none = ^{
+ DISPATCH_INTERNAL_CRASH(0, "none destructor called");
+};
+
+#if !HAVE_MACH
+const dispatch_block_t _dispatch_data_destructor_munmap = ^{
+ DISPATCH_INTERNAL_CRASH(0, "munmap destructor called");
+};
+#else
+// _dispatch_data_destructor_munmap is a linker alias to the following
+const dispatch_block_t _dispatch_data_destructor_vm_deallocate = ^{
+ DISPATCH_INTERNAL_CRASH(0, "vmdeallocate destructor called");
+};
+#endif
+
+const dispatch_block_t _dispatch_data_destructor_inline = ^{
+ DISPATCH_INTERNAL_CRASH(0, "inline destructor called");
+};
+
+struct dispatch_data_s _dispatch_data_empty = {
+#if DISPATCH_DATA_IS_BRIDGED_TO_NSDATA
+ .do_vtable = DISPATCH_DATA_EMPTY_CLASS,
+#else
+ DISPATCH_GLOBAL_OBJECT_HEADER(data),
+ .do_next = DISPATCH_OBJECT_LISTLESS,
+#endif
+};
+
#pragma mark -
#pragma mark dispatch_bug
size_t bufsz = sizeof(_dispatch_build);
sysctl(mib, 2, _dispatch_build, &bufsz, NULL, 0);
+#if TARGET_IPHONE_SIMULATOR
+ char *sim_version = getenv("SIMULATOR_RUNTIME_BUILD_VERSION");
+ if (sim_version) {
+ (void)strlcat(_dispatch_build, " ", sizeof(_dispatch_build));
+ (void)strlcat(_dispatch_build, sim_version, sizeof(_dispatch_build));
+ }
+#endif // TARGET_IPHONE_SIMULATOR
+
#else
/*
* XXXRW: What to do here for !Mac OS X?
*/
memset(_dispatch_build, 0, sizeof(_dispatch_build));
-#endif
+#endif // __APPLE__
}
static dispatch_once_t _dispatch_build_pred;
_dispatch_bug_log("BUG in libdispatch client: %s", msg);
}
+#if HAVE_MACH
void
_dispatch_bug_mach_client(const char* msg, mach_msg_return_t kr)
{
_dispatch_bug_log("BUG in libdispatch client: %s %s - 0x%x", msg,
mach_error_string(kr), kr);
}
+#endif
void
_dispatch_bug_kevent_client(const char* msg, const char* filter,
const char *operation, int err)
{
- _dispatch_bug_log("BUG in libdispatch client: %s[%s] %s: \"%s\" - 0x%x",
- msg, filter, operation, strerror(err), err);
+ if (operation && err) {
+ _dispatch_bug_log("BUG in libdispatch client: %s[%s] %s: \"%s\" - 0x%x",
+ msg, filter, operation, strerror(err), err);
+ } else if (operation) {
+ _dispatch_bug_log("BUG in libdispatch client: %s[%s] %s",
+ msg, filter, operation);
+ } else {
+ _dispatch_bug_log("BUG in libdispatch: %s[%s]: \"%s\" - 0x%x",
+ msg, filter, strerror(err), err);
+ }
+}
+
+void
+_dispatch_bug_deprecated(const char *msg)
+{
+ _dispatch_bug_log("DEPRECATED USE in libdispatch client: %s", msg);
}
void
struct timeval tv;
gettimeofday(&tv, NULL);
#if DISPATCH_DEBUG
- dispatch_log_basetime = mach_absolute_time();
+ dispatch_log_basetime = _dispatch_absolute_time();
#endif
dprintf(dispatch_logfile, "=== log file opened for %s[%u] at "
"%ld.%06u ===\n", getprogname() ?: "", getpid(),
- tv.tv_sec, tv.tv_usec);
+ tv.tv_sec, (int)tv.tv_usec);
}
}
}
#if DISPATCH_DEBUG
offset += dsnprintf(&buf[offset], bufsiz - offset, "%llu\t",
- mach_absolute_time() - dispatch_log_basetime);
+ _dispatch_absolute_time() - dispatch_log_basetime);
#endif
r = vsnprintf(&buf[offset], bufsiz - offset, msg, ap);
if (r < 0) return;
static inline void
_dispatch_vsyslog(const char *msg, va_list ap)
{
- vsyslog(LOG_NOTICE, msg, *ap_ptr);
+ vsyslog(LOG_NOTICE, msg, ap);
}
#endif // DISPATCH_USE_SIMPLE_ASL
_dispatch_object_debug2(dispatch_object_t dou, char* buf, size_t bufsiz)
{
DISPATCH_OBJECT_TFB(_dispatch_objc_debug, dou, buf, bufsiz);
- if (dou._do->do_vtable->do_debug) {
+ if (dx_vtable(dou._do)->do_debug) {
return dx_debug(dou._do, buf, bufsiz);
}
return strlcpy(buf, "NULL vtable slot: ", bufsiz);
int r;
#if DISPATCH_DEBUG && !DISPATCH_USE_OS_DEBUG_LOG
offset += dsnprintf(&buf[offset], bufsiz - offset, "%llu\t\t%p\t",
- mach_absolute_time() - dispatch_log_basetime,
+ _dispatch_absolute_time() - dispatch_log_basetime,
(void *)_dispatch_thread_self());
#endif
if (dou._do) {
_dispatch_temporary_resource_shortage(void)
{
sleep(1);
+ asm(""); // prevent tailcall
}
void *
return buf;
}
+/**
+ * If the source string is mutable, allocates memory and copies the contents.
+ * Otherwise returns the source string.
+ */
+const char *
+_dispatch_strdup_if_mutable(const char *str)
+{
+#if HAVE_DYLD_IS_MEMORY_IMMUTABLE
+ size_t size = strlen(str) + 1;
+ if (slowpath(!_dyld_is_memory_immutable(str, size))) {
+ char *clone = (char *) malloc(size);
+ if (dispatch_assume(clone)) {
+ memcpy(clone, str, size);
+ }
+ return clone;
+ }
+ return str;
+#else
+ return strdup(str);
+#endif
+}
+
#pragma mark -
#pragma mark dispatch_block_t
#ifdef __BLOCKS__
-#undef _dispatch_Block_copy
-dispatch_block_t
-_dispatch_Block_copy(dispatch_block_t db)
+void *
+(_dispatch_Block_copy)(void *db)
{
dispatch_block_t rval;
}
return rval;
}
- DISPATCH_CLIENT_CRASH("NULL was passed where a block should have been");
+ DISPATCH_CLIENT_CRASH(0, "NULL was passed where a block should have been");
}
void
#pragma mark dispatch_client_callout
// Abort on uncaught exceptions thrown from client callouts rdar://8577499
-#if DISPATCH_USE_CLIENT_CALLOUT && (__USING_SJLJ_EXCEPTIONS__ || !USE_OBJC)
+#if DISPATCH_USE_CLIENT_CALLOUT && (__USING_SJLJ_EXCEPTIONS__ || !USE_OBJC || \
+ OS_OBJECT_HAVE_OBJC1)
// On platforms with SjLj exceptions, avoid the SjLj overhead on every callout
// by clearing the unwinder's TSD pointer to the handler stack around callouts
_dispatch_set_unwind_tsd(u);
}
+#if HAVE_MACH
+
+#undef _dispatch_client_callout3
+DISPATCH_NOINLINE
+void
+_dispatch_client_callout3(void *ctxt, dispatch_mach_reason_t reason,
+ dispatch_mach_msg_t dmsg, dispatch_mach_async_reply_callback_t f)
+{
+ _dispatch_get_tsd_base();
+ void *u = _dispatch_get_unwind_tsd();
+ if (fastpath(!u)) return f(ctxt, reason, dmsg);
+ _dispatch_set_unwind_tsd(NULL);
+ f(ctxt, reason, dmsg);
+ _dispatch_free_unwind_tsd();
+ _dispatch_set_unwind_tsd(u);
+}
+
#undef _dispatch_client_callout4
void
_dispatch_client_callout4(void *ctxt, dispatch_mach_reason_t reason,
_dispatch_free_unwind_tsd();
_dispatch_set_unwind_tsd(u);
}
+#endif // HAVE_MACH
#endif // DISPATCH_USE_CLIENT_CALLOUT
#if !USE_OBJC
-static const _os_object_class_s _os_object_class;
+static const _os_object_vtable_s _os_object_vtable;
void
_os_object_init(void)
_os_object_t
_os_object_alloc(const void *cls, size_t size)
{
- if (!cls) cls = &_os_object_class;
+ if (!cls) cls = &_os_object_vtable;
return _os_object_alloc_realized(cls, size);
}
}
}
-#pragma mark -
-#pragma mark dispatch_autorelease_pool no_objc
-
-#if DISPATCH_COCOA_COMPAT
-
-void *_dispatch_autorelease_pool_push(void) {
- void *pool = NULL;
- if (_dispatch_begin_NSAutoReleasePool) {
- pool = _dispatch_begin_NSAutoReleasePool();
- }
- return pool;
-}
-
-void _dispatch_autorelease_pool_pop(void *pool) {
- if (_dispatch_end_NSAutoReleasePool) {
- _dispatch_end_NSAutoReleasePool(pool);
- }
-}
-
-#endif // DISPATCH_COCOA_COMPAT
-#endif // !USE_OBJC
-
-#pragma mark -
-#pragma mark dispatch_source_types
-
-static void
-dispatch_source_type_timer_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED,
- unsigned long mask,
- dispatch_queue_t q)
-{
- if (fastpath(!ds->ds_refs)) {
- ds->ds_refs = _dispatch_calloc(1ul,
- sizeof(struct dispatch_timer_source_refs_s));
- }
- ds->ds_needs_rearm = true;
- ds->ds_is_timer = true;
- if (q == dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0)
- || q == dispatch_get_global_queue(
- DISPATCH_QUEUE_PRIORITY_BACKGROUND, DISPATCH_QUEUE_OVERCOMMIT)){
- mask |= DISPATCH_TIMER_BACKGROUND; // <rdar://problem/12200216>
- }
- ds_timer(ds->ds_refs).flags = mask;
-}
-
-const struct dispatch_source_type_s _dispatch_source_type_timer = {
- .ke = {
- .filter = DISPATCH_EVFILT_TIMER,
- },
- .mask = DISPATCH_TIMER_STRICT|DISPATCH_TIMER_BACKGROUND|
- DISPATCH_TIMER_WALL_CLOCK,
- .init = dispatch_source_type_timer_init,
-};
-
-static void
-dispatch_source_type_timer_with_aggregate_init(dispatch_source_t ds,
- dispatch_source_type_t type, uintptr_t handle, unsigned long mask,
- dispatch_queue_t q)
+void
+_os_object_atfork_prepare(void)
{
- ds->ds_refs = _dispatch_calloc(1ul,
- sizeof(struct dispatch_timer_source_aggregate_refs_s));
- dispatch_source_type_timer_init(ds, type, handle, mask, q);
- ds_timer(ds->ds_refs).flags |= DISPATCH_TIMER_WITH_AGGREGATE;
- ds->dq_specific_q = (void*)handle;
- _dispatch_retain(ds->dq_specific_q);
+ return;
}
-const struct dispatch_source_type_s _dispatch_source_type_timer_with_aggregate={
- .ke = {
- .filter = DISPATCH_EVFILT_TIMER,
- .ident = ~0ull,
- },
- .mask = DISPATCH_TIMER_STRICT|DISPATCH_TIMER_BACKGROUND,
- .init = dispatch_source_type_timer_with_aggregate_init,
-};
-
-static void
-dispatch_source_type_interval_init(dispatch_source_t ds,
- dispatch_source_type_t type, uintptr_t handle, unsigned long mask,
- dispatch_queue_t q)
+void
+_os_object_atfork_parent(void)
{
- dispatch_source_type_timer_init(ds, type, handle, mask, q);
- ds_timer(ds->ds_refs).flags |= DISPATCH_TIMER_INTERVAL;
- unsigned long ident = _dispatch_source_timer_idx(ds->ds_refs);
- ds->ds_dkev->dk_kevent.ident = ds->ds_ident_hack = ident;
- _dispatch_source_set_interval(ds, handle);
+ return;
}
-const struct dispatch_source_type_s _dispatch_source_type_interval = {
- .ke = {
- .filter = DISPATCH_EVFILT_TIMER,
- .ident = ~0ull,
- },
- .mask = DISPATCH_TIMER_STRICT|DISPATCH_TIMER_BACKGROUND|
- DISPATCH_INTERVAL_UI_ANIMATION,
- .init = dispatch_source_type_interval_init,
-};
-
-#if !DISPATCH_USE_SELECT_FALLBACK || DISPATCH_DYNAMIC_SELECT_FALLBACK
-static void
-dispatch_source_type_readwrite_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED,
- unsigned long mask DISPATCH_UNUSED,
- dispatch_queue_t q DISPATCH_UNUSED)
+void
+_os_object_atfork_child(void)
{
- ds->ds_dkev->dk_kevent.flags |= EV_UDATA_SPECIFIC;
- ds->ds_is_direct_kevent = true;
- // bypass kernel check for device kqueue support rdar://19004921
- ds->ds_dkev->dk_kevent.fflags = NOTE_LOWAT;
- ds->ds_dkev->dk_kevent.data = 1;
+ return;
}
-#else
-#define dispatch_source_type_readwrite_init NULL
-#endif
-
-const struct dispatch_source_type_s _dispatch_source_type_read = {
- .ke = {
- .filter = EVFILT_READ,
- .flags = EV_DISPATCH,
- },
- .init = dispatch_source_type_readwrite_init,
-};
-const struct dispatch_source_type_s _dispatch_source_type_write = {
- .ke = {
- .filter = EVFILT_WRITE,
- .flags = EV_DISPATCH,
- },
- .init = dispatch_source_type_readwrite_init,
-};
+#pragma mark -
+#pragma mark dispatch_autorelease_pool no_objc
-#if DISPATCH_USE_MEMORYSTATUS
+#if DISPATCH_COCOA_COMPAT
-#if TARGET_IPHONE_SIMULATOR // rdar://problem/9219483
-static int _dispatch_ios_simulator_memory_warnings_fd = -1;
-static void
-_dispatch_ios_simulator_memorypressure_init(void *context DISPATCH_UNUSED)
+void*
+_dispatch_autorelease_pool_push(void)
{
- char *e = getenv("SIMULATOR_MEMORY_WARNINGS");
- if (!e) return;
- _dispatch_ios_simulator_memory_warnings_fd = open(e, O_EVTONLY);
- if (_dispatch_ios_simulator_memory_warnings_fd == -1) {
- (void)dispatch_assume_zero(errno);
+ void *pool = NULL;
+ if (_dispatch_begin_NSAutoReleasePool) {
+ pool = _dispatch_begin_NSAutoReleasePool();
}
+ return pool;
}
-#endif
-
-static void
-dispatch_source_type_memorystatus_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED,
- unsigned long mask DISPATCH_UNUSED,
- dispatch_queue_t q DISPATCH_UNUSED)
-{
-#if TARGET_IPHONE_SIMULATOR
- static dispatch_once_t pred;
- dispatch_once_f(&pred, NULL, _dispatch_ios_simulator_memorypressure_init);
- handle = (uintptr_t)_dispatch_ios_simulator_memory_warnings_fd;
- mask = NOTE_ATTRIB;
- ds->ds_dkev->dk_kevent.filter = EVFILT_VNODE;
- ds->ds_dkev->dk_kevent.ident = handle;
- ds->ds_dkev->dk_kevent.flags |= EV_CLEAR;
- ds->ds_dkev->dk_kevent.fflags = (uint32_t)mask;
- ds->ds_ident_hack = handle;
- ds->ds_pending_data_mask = mask;
- ds->ds_memorystatus_override = 1;
-#endif
- ds->ds_is_level = false;
-}
-
-#ifndef NOTE_MEMORYSTATUS_LOW_SWAP
-#define NOTE_MEMORYSTATUS_LOW_SWAP 0x8
-#endif
-
-const struct dispatch_source_type_s _dispatch_source_type_memorystatus = {
- .ke = {
- .filter = EVFILT_MEMORYSTATUS,
- .flags = EV_DISPATCH|EV_UDATA_SPECIFIC,
- },
- .mask = NOTE_MEMORYSTATUS_PRESSURE_NORMAL|NOTE_MEMORYSTATUS_PRESSURE_WARN
- |NOTE_MEMORYSTATUS_PRESSURE_CRITICAL|NOTE_MEMORYSTATUS_LOW_SWAP,
- .init = dispatch_source_type_memorystatus_init,
-};
-
-static void
-dispatch_source_type_vm_init(dispatch_source_t ds,
- dispatch_source_type_t type,
- uintptr_t handle,
- unsigned long mask,
- dispatch_queue_t q)
-{
- // Map legacy vm pressure to memorystatus warning rdar://problem/15907505
- mask = NOTE_MEMORYSTATUS_PRESSURE_WARN;
- ds->ds_dkev->dk_kevent.fflags = (uint32_t)mask;
- ds->ds_pending_data_mask = mask;
- ds->ds_vmpressure_override = 1;
- dispatch_source_type_memorystatus_init(ds, type, handle, mask, q);
-}
-
-const struct dispatch_source_type_s _dispatch_source_type_vm = {
- .ke = {
- .filter = EVFILT_MEMORYSTATUS,
- .flags = EV_DISPATCH|EV_UDATA_SPECIFIC,
- },
- .mask = NOTE_VM_PRESSURE,
- .init = dispatch_source_type_vm_init,
-};
-
-#elif DISPATCH_USE_VM_PRESSURE
-
-static void
-dispatch_source_type_vm_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED,
- unsigned long mask DISPATCH_UNUSED,
- dispatch_queue_t q DISPATCH_UNUSED)
-{
- ds->ds_is_level = false;
-}
-
-const struct dispatch_source_type_s _dispatch_source_type_vm = {
- .ke = {
- .filter = EVFILT_VM,
- .flags = EV_DISPATCH|EV_UDATA_SPECIFIC,
- },
- .mask = NOTE_VM_PRESSURE,
- .init = dispatch_source_type_vm_init,
-};
-
-#endif // DISPATCH_USE_VM_PRESSURE
-
-static void
-dispatch_source_type_proc_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED,
- unsigned long mask DISPATCH_UNUSED,
- dispatch_queue_t q DISPATCH_UNUSED)
-{
- ds->ds_dkev->dk_kevent.fflags |= NOTE_EXIT; // rdar://16655831
-}
-
-const struct dispatch_source_type_s _dispatch_source_type_proc = {
- .ke = {
- .filter = EVFILT_PROC,
- .flags = EV_CLEAR|EV_UDATA_SPECIFIC,
- },
- .mask = NOTE_EXIT|NOTE_FORK|NOTE_EXEC
-#if HAVE_DECL_NOTE_SIGNAL
- |NOTE_SIGNAL
-#endif
-#if HAVE_DECL_NOTE_REAP
- |NOTE_REAP
-#endif
- ,
- .init = dispatch_source_type_proc_init,
-};
-
-const struct dispatch_source_type_s _dispatch_source_type_signal = {
- .ke = {
- .filter = EVFILT_SIGNAL,
- .flags = EV_UDATA_SPECIFIC,
- },
-};
-
-const struct dispatch_source_type_s _dispatch_source_type_vnode = {
- .ke = {
- .filter = EVFILT_VNODE,
- .flags = EV_CLEAR|EV_UDATA_SPECIFIC,
- },
- .mask = NOTE_DELETE|NOTE_WRITE|NOTE_EXTEND|NOTE_ATTRIB|NOTE_LINK|
- NOTE_RENAME|NOTE_REVOKE
-#if HAVE_DECL_NOTE_NONE
- |NOTE_NONE
-#endif
- ,
-};
-
-const struct dispatch_source_type_s _dispatch_source_type_vfs = {
- .ke = {
- .filter = EVFILT_FS,
- .flags = EV_CLEAR|EV_UDATA_SPECIFIC,
- },
- .mask = VQ_NOTRESP|VQ_NEEDAUTH|VQ_LOWDISK|VQ_MOUNT|VQ_UNMOUNT|VQ_DEAD|
- VQ_ASSIST|VQ_NOTRESPLOCK
-#if HAVE_DECL_VQ_UPDATE
- |VQ_UPDATE
-#endif
-#if HAVE_DECL_VQ_VERYLOWDISK
- |VQ_VERYLOWDISK
-#endif
-#if HAVE_DECL_VQ_QUOTA
- |VQ_QUOTA
-#endif
- ,
-};
-const struct dispatch_source_type_s _dispatch_source_type_sock = {
-#ifdef EVFILT_SOCK
- .ke = {
- .filter = EVFILT_SOCK,
- .flags = EV_CLEAR|EV_UDATA_SPECIFIC,
- },
- .mask = NOTE_CONNRESET | NOTE_READCLOSED | NOTE_WRITECLOSED |
- NOTE_TIMEOUT | NOTE_NOSRCADDR | NOTE_IFDENIED | NOTE_SUSPEND |
- NOTE_RESUME | NOTE_KEEPALIVE
-#ifdef NOTE_ADAPTIVE_WTIMO
- | NOTE_ADAPTIVE_WTIMO | NOTE_ADAPTIVE_RTIMO
-#endif
-#ifdef NOTE_CONNECTED
- | NOTE_CONNECTED | NOTE_DISCONNECTED | NOTE_CONNINFO_UPDATED
-#endif
- ,
-#endif // EVFILT_SOCK
-};
-
-#if DISPATCH_USE_EV_UDATA_SPECIFIC
-static void
-dispatch_source_type_data_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED,
- unsigned long mask DISPATCH_UNUSED,
- dispatch_queue_t q DISPATCH_UNUSED)
+void
+_dispatch_autorelease_pool_pop(void *pool)
{
- ds->ds_needs_rearm = false; // not registered with kevent
+ if (_dispatch_end_NSAutoReleasePool) {
+ _dispatch_end_NSAutoReleasePool(pool);
+ }
}
-#else
-#define dispatch_source_type_data_init NULL
-#endif
-
-const struct dispatch_source_type_s _dispatch_source_type_data_add = {
- .ke = {
- .filter = DISPATCH_EVFILT_CUSTOM_ADD,
- .flags = EV_UDATA_SPECIFIC,
- },
- .init = dispatch_source_type_data_init,
-};
-
-const struct dispatch_source_type_s _dispatch_source_type_data_or = {
- .ke = {
- .filter = DISPATCH_EVFILT_CUSTOM_OR,
- .flags = EV_CLEAR|EV_UDATA_SPECIFIC,
- .fflags = ~0u,
- },
- .init = dispatch_source_type_data_init,
-};
-#if HAVE_MACH
-
-static void
-dispatch_source_type_mach_send_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED, unsigned long mask,
- dispatch_queue_t q DISPATCH_UNUSED)
+void
+_dispatch_last_resort_autorelease_pool_push(dispatch_invoke_context_t dic)
{
- if (!mask) {
- // Preserve legacy behavior that (mask == 0) => DISPATCH_MACH_SEND_DEAD
- ds->ds_dkev->dk_kevent.fflags = DISPATCH_MACH_SEND_DEAD;
- ds->ds_pending_data_mask = DISPATCH_MACH_SEND_DEAD;
- }
+ dic->dic_autorelease_pool = _dispatch_autorelease_pool_push();
}
-const struct dispatch_source_type_s _dispatch_source_type_mach_send = {
- .ke = {
- .filter = DISPATCH_EVFILT_MACH_NOTIFICATION,
- .flags = EV_CLEAR,
- },
- .mask = DISPATCH_MACH_SEND_DEAD|DISPATCH_MACH_SEND_POSSIBLE,
- .init = dispatch_source_type_mach_send_init,
-};
-
-static void
-dispatch_source_type_mach_recv_init(dispatch_source_t ds,
- dispatch_source_type_t type DISPATCH_UNUSED,
- uintptr_t handle DISPATCH_UNUSED,
- unsigned long mask DISPATCH_UNUSED,
- dispatch_queue_t q DISPATCH_UNUSED)
+void
+_dispatch_last_resort_autorelease_pool_pop(dispatch_invoke_context_t dic)
{
- ds->ds_is_level = false;
+ _dispatch_autorelease_pool_pop(dic->dic_autorelease_pool);
+ dic->dic_autorelease_pool = NULL;
}
-const struct dispatch_source_type_s _dispatch_source_type_mach_recv = {
- .ke = {
- .filter = EVFILT_MACHPORT,
- .flags = EV_DISPATCH,
- .fflags = DISPATCH_MACH_RECV_MESSAGE,
- },
- .init = dispatch_source_type_mach_recv_init,
-};
+#endif // DISPATCH_COCOA_COMPAT
+#endif // !USE_OBJC
#pragma mark -
#pragma mark dispatch_mig
+#if HAVE_MACH
void *
dispatch_mach_msg_get_context(mach_msg_header_t *msg)
_dispatch_mach_notify_port_destroyed(mach_port_t notify DISPATCH_UNUSED,
mach_port_t name)
{
- kern_return_t kr;
- // this function should never be called
- (void)dispatch_assume_zero(name);
- kr = mach_port_mod_refs(mach_task_self(), name, MACH_PORT_RIGHT_RECEIVE,-1);
- DISPATCH_VERIFY_MIG(kr);
- (void)dispatch_assume_zero(kr);
- return KERN_SUCCESS;
+ DISPATCH_INTERNAL_CRASH(name, "unexpected receipt of port-destroyed");
+ return KERN_FAILURE;
}
kern_return_t
-_dispatch_mach_notify_no_senders(mach_port_t notify,
- mach_port_mscount_t mscnt DISPATCH_UNUSED)
+_dispatch_mach_notify_no_senders(mach_port_t notify DISPATCH_UNUSED,
+ mach_port_mscount_t mscnt)
{
- // this function should never be called
- (void)dispatch_assume_zero(notify);
- return KERN_SUCCESS;
+ DISPATCH_INTERNAL_CRASH(mscnt, "unexpected receipt of no-more-senders");
+ return KERN_FAILURE;
}
kern_return_t
projects / apple / libdispatch.git / blobdiff