osfmk/i386/cpu_threads.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 #ifndef _I386_CPU_THREADS_H_
  31 #define _I386_CPU_THREADS_H_
  32
  33 #include <i386/mp.h>
  34 #include <i386/cpu_data.h>
  35
  36 struct pmc;
  37
  38 typedef struct {
  39         int             base_cpu;       /* Number of the cpu first in core */
  40         int             num_threads;    /* Number of threads (logical cpus) */
  41         int             active_threads; /* Number of non-halted thredas */
  42         struct pmc      *pmc;           /* Pointer to perfmon data */
  43 } cpu_core_t;
  44
  45 #define CPU_THREAD_MASK                 0x00000001
  46 #define cpu_to_core_lapic(cpu)          (cpu_to_lapic[cpu] & ~CPU_THREAD_MASK)
  47 #define cpu_to_core_cpu(cpu)            (lapic_to_cpu[cpu_to_core_lapic(cpu)])
  48 #define cpu_to_logical_cpu(cpu)         (cpu_to_lapic[cpu] & CPU_THREAD_MASK)
  49 #define cpu_is_core_cpu(cpu)            (cpu_to_logical_cpu(cpu) == 0)
  50
  51 #define cpu_to_core(cpu)                (cpu_datap(cpu)->cpu_core)
  52
  53 /* Fast access: */
  54 #define cpu_core()                      ((cpu_core_t *) get_cpu_core())
  55
  56 #define cpu_is_same_core(cpu1,cpu2)     (cpu_to_core(cpu1) == cpu_to_core(cpu2))
  57
  58 extern void *cpu_thread_alloc(int);
  59 extern void cpu_thread_init(void);
  60 extern void cpu_thread_halt(void);
  61
  62 extern int idlehalt;
  63
  64 #endif /* _I386_CPU_THREADS_H_ */