osfmk/i386/cpu_threads.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 #ifndef _I386_CPU_THREADS_H_
  23 #define _I386_CPU_THREADS_H_
  24
  25 #include <i386/mp.h>
  26 #include <i386/cpu_data.h>
  27
  28 struct pmc;
  29
  30 typedef struct {
  31         int             base_cpu;       /* Number of the cpu first in core */
  32         int             num_threads;    /* Number of threads (logical cpus) */
  33         int             active_threads; /* Number of non-halted thredas */
  34         struct pmc      *pmc;           /* Pointer to perfmon data */
  35 } cpu_core_t;
  36
  37 #define CPU_THREAD_MASK                 0x00000001
  38 #define cpu_to_core_lapic(cpu)          (cpu_to_lapic[cpu] & ~CPU_THREAD_MASK)
  39 #define cpu_to_core_cpu(cpu)            (lapic_to_cpu[cpu_to_core_lapic(cpu)])
  40 #define cpu_to_logical_cpu(cpu)         (cpu_to_lapic[cpu] & CPU_THREAD_MASK)
  41 #define cpu_is_core_cpu(cpu)            (cpu_to_logical_cpu(cpu) == 0)
  42
  43 #define cpu_to_core(cpu)                (cpu_datap(cpu)->cpu_core)
  44
  45 /* Fast access: */
  46 #define cpu_core()                      ((cpu_core_t *) get_cpu_core())
  47
  48 #define cpu_is_same_core(cpu1,cpu2)     (cpu_to_core(cpu1) == cpu_to_core(cpu2))
  49
  50 extern void cpu_thread_init(void);
  51 extern void cpu_thread_halt(void);
  52
  53 extern int idlehalt;
  54
  55 extern int ncore;
  56 #endif /* _I386_CPU_THREADS_H_ */