Jun 15, 2018 man: This command, followed by another Unix command, lets you read the Unix manual about the second command. This is super useful if you want to try a cool Terminal trick you found online, but aren't sure what those commands actually do. Processorbasicinfo - Defines the basic information about a processor. Processor Set Interface The processor set interface allows for the grouping of tasks and processors for the purpose of exclusive scheduling. These interface are deprecated and should not be used in code that isn't tied to a particular release of Mac OS X/Darwin. Learn about AppleCare+ and the Apple limited warranty coverage, start a service request for your Mac, and find out how to prepare your Mac for service. Learn more about repairs. Get AppleCare+ for Mac. With AppleCare+, you’re covered. Get accidental damage coverage and 24/7 priority access to. The 'classic' Mac OS is the original Macintosh operating system that was introduced in 1984 alongside the first Macintosh and remained in primary use on Macs until the introduction of Mac OS X in 2001. Apple released the original Macintosh on January 24, 1984; its early system software was partially based on the Lisa OS and the Xerox PARC Alto computer, which former Apple CEO Steve Jobs.
Mach IPC presents itself in a few forms: message queues, lock-sets, and semaphores (more may be added in the future). All share one common charateristic: the capabilities presented by each are represented through a handle known as a Mach port. Specific rights represented in these Mach port capability handles allow the underlying IPC object to be used and manipulated in consistent ways.
Mach Message Queue Interface
mach_msg - Send and/or receive a message from the target port.
mach_msg_overwrite - Send and/or receive messages with possible overwrite.
mach_msg_descriptor - Specifies an element of a complex IPC message.
mach_msg_header - Specifies the content of an IPC message header.
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Mach Lock-Set Interface
lock_acquire - Acquire ownership a lock
lock_handoff - Hand-off ownership of a lock.
lock_handoff_accept - Accept lock ownership from a handoff.
lock_make_stable - Stabilize the state of the specified lock.
lock_release - Release ownership of a lock.
lock_set_create - Create a new lock set.
lock_set_destroy - Destroy a lock set and its associated locks.
lock_try - Attempt to acquire access rights to a lock.
Mach Semaphore Interface
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semaphore_create - Create a new semaphore.
semaphore_destroy - Destroy a semaphore.
semaphore_signal - Increments the semaphore count.
semaphore_signal_all - Wake up all threads blocked on a semaphore.
semaphore_wait - Wait on the specified semaphore.
Mach Port Management Interface
mach_port_allocate - Create caller-specified type of port right.
mach_port_allocate_full - Create a port right with full Mach port semantics.
mach_port_allocate_name - Create a port right with the caller-specified name.
mach_port_allocate_qos - Allocate a port with specified 'quality of service'.
mach_port_allocate_subsystem - Create a port right associated with the caller-specified subsystem.
mach_port_deallocate - Decrement the target port right's user reference count.
mach_port_destroy - Deallocate all port rights associated with specified name.
mach_port_extract_right - Remove the specified right from the target task and return it to the caller.
mach_port_get_attributes - Return information about target port as specified by the caller.
mach_port_get_refs - Return the current count of user references on the target port right.
mach_port_get_set_status - Return the port right names contained in the target port set.
mach_port_insert_right - Insert the specified port right into the target task.
mach_port_mod_refs - Modify the specified port right's count of user references.
mach_port_move_member - Move the specified receive right into or out of the specified port set.
mach_port_names - Return information about a task's port name space.
mach_port_request_notification - Request notification of the specified port event type.
mach_port_set_attributes - Set the target port's attributes.
mach_port_set_mscount - Change the target port's make-send count.
mach_port_set_seqno - Change the current value of the target port's sequence number.
mach_port_type - Return the characteristics of the target port name.
mach_reply_port - Allocate a new port and insert corresponding receive right in the calling task.
mach_subsystem_create - Used by a server to register information about an RPC subsystem with the kernel.
mach_port_limits - Specifies a port's resource and message queue limits.
mach_port_qos - Specifies a port's attributes with respect to 'Quality Of Service.'
mach_port_status - Used to present a port's current status with respect to various important attributes.
do_mach_notify_dead_name - Handle the current instance of a dead-name notification.
do_mach_notify_no_senders - Handle the current instance of a no-more-senders notification.
do_mach_notify_port_deleted - Handle the current instance of a port-deleted notification.
do_mach_notify_port_destroyed - Handle the current instance of a port-destroyed notification.
do_mach_notify_send_once - Handle the current instance of a send-once notification.
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notify_server - Detect and handle a kernel-generated IPC notification.