LXR dpdk/lib/eal/windows/include/sched.h

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright(c) 2019 Intel Corporation
   3 */
   4
   5#ifndef _SCHED_H_
   6#define _SCHED_H_
   7
   8/**
   9 * This file is added to support the common code in eal_common_thread.c
  10 * as Microsoft libc does not contain sched.h. This may be removed
  11 * in future releases.
  12 */
  13#ifdef __cplusplus
  14extern "C" {
  15#endif
  16
  17#ifndef CPU_SETSIZE
  18#define CPU_SETSIZE RTE_MAX_LCORE
  19#endif
  20
  21#define _BITS_PER_SET (sizeof(long long) * 8)
  22#define _BIT_SET_MASK (_BITS_PER_SET - 1)
  23
  24#define _NUM_SETS(b) (((b) + _BIT_SET_MASK) / _BITS_PER_SET)
  25#define _WHICH_SET(b) ((b) / _BITS_PER_SET)
  26#define _WHICH_BIT(b) ((b) & (_BITS_PER_SET - 1))
  27
  28typedef struct _rte_cpuset_s {
  29        long long _bits[_NUM_SETS(CPU_SETSIZE)];
  30} rte_cpuset_t;
  31#define RTE_HAS_CPUSET
  32
  33#define CPU_SET(b, s) ((s)->_bits[_WHICH_SET(b)] |= (1LL << _WHICH_BIT(b)))
  34
  35#define CPU_ZERO(s)                                                     \
  36        do {                                                            \
  37                unsigned int _i;                                        \
  38                                                                        \
  39                for (_i = 0; _i < _NUM_SETS(CPU_SETSIZE); _i++)         \
  40                        (s)->_bits[_i] = 0LL;                           \
  41        } while (0)
  42
  43#define CPU_ISSET(b, s) (((s)->_bits[_WHICH_SET(b)] & \
  44        (1LL << _WHICH_BIT(b))) != 0LL)
  45
  46static inline int
  47count_cpu(rte_cpuset_t *s)
  48{
  49        unsigned int _i;
  50        int count = 0;
  51
  52        for (_i = 0; _i < CPU_SETSIZE; _i++)
  53                if (CPU_ISSET(_i, s) != 0LL)
  54                        count++;
  55        return count;
  56}
  57#define CPU_COUNT(s) count_cpu(s)
  58
  59#define CPU_AND(dst, src1, src2) \
  60do { \
  61        unsigned int _i; \
  62        \
  63        for (_i = 0; _i < _NUM_SETS(CPU_SETSIZE); _i++) \
  64                (dst)->_bits[_i] = (src1)->_bits[_i] & (src2)->_bits[_i]; \
  65} while (0)
  66
  67#define CPU_OR(dst, src1, src2) \
  68do { \
  69        unsigned int _i; \
  70        \
  71        for (_i = 0; _i < _NUM_SETS(CPU_SETSIZE); _i++) \
  72                (dst)->_bits[_i] = (src1)->_bits[_i] | (src2)->_bits[_i]; \
  73} while (0)
  74
  75#define CPU_FILL(s) \
  76do { \
  77        unsigned int _i; \
  78        for (_i = 0; _i < _NUM_SETS(CPU_SETSIZE); _i++) \
  79                (s)->_bits[_i] = -1LL; \
  80} while (0)
  81
  82#define CPU_NOT(dst, src) \
  83do { \
  84        unsigned int _i; \
  85        for (_i = 0; _i < _NUM_SETS(CPU_SETSIZE); _i++) \
  86                (dst)->_bits[_i] = (src)->_bits[_i] ^ -1LL; \
  87} while (0)
  88
  89#ifdef __cplusplus
  90}
  91#endif
  92
  93#endif /* _SCHED_H_ */
  94