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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
Copyright © 2015 Filipe Brandenburger
***/
#include <sched.h>
#include "macro.h"
#include "missing.h"
/* This wraps the libc interface with a variable to keep the allocated size. */
typedef struct CPUSet {
cpu_set_t *set;
size_t allocated; /* in bytes */
} CPUSet;
static inline void cpu_set_reset(CPUSet *a) {
assert((a->allocated > 0) == !!a->set);
if (a->set)
CPU_FREE(a->set);
*a = (CPUSet) {};
}
int cpu_set_add_all(CPUSet *a, const CPUSet *b);
char* cpu_set_to_string(const CPUSet *a);
char *cpu_set_to_range_string(const CPUSet *a);
int cpu_set_realloc(CPUSet *cpu_set, unsigned ncpus);
int parse_cpu_set_full(
const char *rvalue,
CPUSet *cpu_set,
bool warn,
const char *unit,
const char *filename, unsigned line,
const char *lvalue);
int parse_cpu_set_extend(
const char *rvalue,
CPUSet *old,
bool warn,
const char *unit,
const char *filename,
unsigned line,
const char *lvalue);
static inline int parse_cpu_set(const char *rvalue, CPUSet *cpu_set){
return parse_cpu_set_full(rvalue, cpu_set, false, NULL, NULL, 0, NULL);
}
int cpu_set_to_dbus(const CPUSet *set, uint8_t **ret, size_t *allocated);
int cpu_set_from_dbus(const uint8_t *bits, size_t size, CPUSet *set);
int cpus_in_affinity_mask(void);
static inline bool mpol_is_valid(int t) {
return t >= MPOL_DEFAULT && t <= MPOL_LOCAL;
}
typedef struct NUMAPolicy {
/* Always use numa_policy_get_type() to read the value */
int type;
CPUSet nodes;
} NUMAPolicy;
bool numa_policy_is_valid(const NUMAPolicy *p);
static inline int numa_policy_get_type(const NUMAPolicy *p) {
return p->type < 0 ? (p->nodes.set ? MPOL_PREFERRED : -1) : p->type;
}
static inline void numa_policy_reset(NUMAPolicy *p) {
assert(p);
cpu_set_reset(&p->nodes);
p->type = -1;
}
int apply_numa_policy(const NUMAPolicy *policy);
const char* mpol_to_string(int i) _const_;
int mpol_from_string(const char *s) _pure_;
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