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GNU Mach 1.7

/*
 * Copyright (C) 2012 Free Software Foundation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

subsystem
#if	KERNEL_SERVER
	  KernelServer
#endif	/* KERNEL_SERVER */
#if	KERNEL_USER
	  KernelUser
#endif	/* KERNEL_USER */
		       gnumach 4200;

#include <mach/std_types.defs>
#include <mach/mach_types.defs>
#include <mach_debug/mach_debug_types.defs>

#ifdef	GNUMACH_IMPORTS
GNUMACH_IMPORTS
#endif

type vm_cache_statistics_data_t = struct[11] of integer_t;

/*
 * Return page cache statistics for the host on which the target task
 * resides.
 */
routine vm_cache_statistics(
		target_task	: vm_task_t;
	out	vm_cache_stats	: vm_cache_statistics_data_t);

/*
 * Terminate a thread and release rights and memory.
 *
 * Intended to be used by threading libraries to provide a clean way for
 * threads to terminate themselves. The resources a thread wouldn't be able
 * to release without this call when terminating itself are its
 * last reference to its kernel port, its reply port, and its stack.
 *
 * This call is semantically equivalent to :
 *  - mach_port_deallocate(task, thread_name);
 *  - if (reply_port != MACH_PORT_NULL)
 *      mach_port_destroy(task, reply_port);
 *  - if ((address != 0) || (size != 0))
 *      vm_deallocate(task, address, size)
 *  - thread_terminate(thread)
 *
 * Implemented as a simple routine so a reply port isn't required.
 */
simpleroutine thread_terminate_release(
		thread		: thread_t;
		task		: task_t;
		thread_name	: mach_port_name_t;
		reply_port	: mach_port_name_t;
		address		: vm_address_t;
		size		: vm_size_t);

/*
 *	Set the name of task TASK to NAME.  This is a debugging aid.
 *	NAME will be used in error messages printed by the kernel.
 */
simpleroutine task_set_name(
		task	: task_t;
		name	: kernel_debug_name_t);

/*
 * Register a port to which a notification about newly created tasks
 * are sent.
 */
routine register_new_task_notification(
		host_priv	: host_priv_t;
		notification	: mach_port_send_t);

/* Test that the contents of ADDR are equal to the 32-bit integer VAL1.
 * If they are not, return immediately, otherwise, block until a
 * matching 'gsync_wake' is done on the same address. FLAGS is used
 * to control how the thread waits, and may be composed of:
 * - GSYNC_SHARED: The address may be shared among tasks. If this
     bit is not set, the address is assumed to be task-local.
 * - GSYNC_QUAD: Additionally check that the adjacent 32-bit word
     following ADDR matches the value VAL2.
 * - GSYNC_TIMED: The call only blocks for MSEC milliseconds. */
routine gsync_wait(
  task : task_t;
  addr : vm_offset_t;
  val1 : unsigned;
  val2 : unsigned;
  msec : natural_t;
  flags : int);

/* Wake up threads waiting on the address ADDR. Much like with
 * 'gsync_wait', the parameter FLAGS controls how it is done. In this
 * case, it may be composed of the following:
 * - GSYNC_SHARED: Same as with 'gsync_wait'.
 * - GSYNC_BROADCAST: Wake up every thread waiting on the address. If
 *   this flag is not set, the call wakes (at most) 1 thread.
 * - GSYNC_MUTATE: Before waking any potential waiting threads, set the
 *   contents of ADDR to VAL.
 *
 * This RPC is implemented as a simple routine for efficiency reasons,
 * and because the return value rarely matters. */
simpleroutine gsync_wake(
  task : task_t;
  addr : vm_offset_t;
  val : unsigned;
  flags : int);

/* Arrange for threads waiting on address SRC_ADDR to instead
 * wait on address DST_ADDR. If WAKE_ONE is true, additionally
 * wake one of the threads waiting on SRC_ADDR. For this function,
 * the parameter flags may be a combination of:
 * - GSYNC_SHARED: Just like with 'gsync_wait' and 'gsync_wake'.
 * - GSYNC_BROADCAST: Move all the threads waiting on SRC_ADDR. If
     this flag is not set, the call moves (at most) 1 thread.
 *
 * This RPC is also a simple routine, and for the same reasons as
 * with 'gsync_wake'. */
simpleroutine gsync_requeue(
  task : task_t;
  src_addr : vm_offset_t;
  dst_addr : vm_offset_t;
  wake_one : boolean_t;
  flags : int);

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