osfmk/i386/cpu_threads.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #ifndef _I386_CPU_THREADS_H_
  29 #define _I386_CPU_THREADS_H_
  30
  31 #include <i386/mp.h>
  32 #include <i386/cpu_data.h>
  33
  34 struct pmc;
  35
  36 typedef struct {
  37         int             base_cpu;       /* Number of the cpu first in core */
  38         int             num_threads;    /* Number of threads (logical cpus) */
  39         int             active_threads; /* Number of non-halted thredas */
  40         struct pmc      *pmc;           /* Pointer to perfmon data */
  41 } cpu_core_t;
  42
  43 #define CPU_THREAD_MASK                 0x00000001
  44 #define cpu_to_core_lapic(cpu)          (cpu_to_lapic[cpu] & ~CPU_THREAD_MASK)
  45 #define cpu_to_core_cpu(cpu)            (lapic_to_cpu[cpu_to_core_lapic(cpu)])
  46 #define cpu_to_logical_cpu(cpu)         (cpu_to_lapic[cpu] & CPU_THREAD_MASK)
  47 #define cpu_is_core_cpu(cpu)            (cpu_to_logical_cpu(cpu) == 0)
  48
  49 #define cpu_to_core(cpu)                (cpu_datap(cpu)->cpu_core)
  50
  51 /* Fast access: */
  52 #define cpu_core()                      ((cpu_core_t *) get_cpu_core())
  53
  54 #define cpu_is_same_core(cpu1,cpu2)     (cpu_to_core(cpu1) == cpu_to_core(cpu2))
  55
  56 extern void cpu_thread_init(void);
  57 extern void cpu_thread_halt(void);
  58
  59 extern int idlehalt;
  60
  61 extern int ncore;
  62 #endif /* _I386_CPU_THREADS_H_ */