include/rseq/percpu-alloc.h

   1 /* SPDX-License-Identifier: MIT */
   2 /* SPDX-FileCopyrightText: 2024 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> */
   3
   4 #ifndef _RSEQ_PERCPU_ALLOC_H
   5 #define _RSEQ_PERCPU_ALLOC_H
   6
   7 #include <stddef.h>
   8 #include <sys/types.h>
   9 #include <sys/mman.h>
  10
  11 /*
  12  * rseq/percpu-alloc.h
  13  */
  14
  15 #ifdef __cplusplus
  16 extern "C" {
  17 #endif
  18
  19 struct rseq_percpu_pool;
  20
  21 struct rseq_percpu_pool *rseq_percpu_pool_create(size_t item_len,
  22                 size_t percpu_len, int max_nr_cpus,
  23                 int mmap_prot, int mmap_flags, int mmap_fd, off_t mmap_offset,
  24                 int numa_flags);
  25 int rseq_percpu_pool_destroy(struct rseq_percpu_pool *pool);
  26
  27 void *rseq_percpu_malloc(struct rseq_percpu_pool *pool);
  28 void *rseq_percpu_zmalloc(struct rseq_percpu_pool *pool);
  29 void rseq_percpu_free(void *ptr);
  30
  31 void *__rseq_percpu_ptr(void *ptr, int cpu);
  32
  33 #define rseq_percpu_ptr(ptr, cpu)       ((__typeof__(ptr)) __rseq_percpu_ptr(ptr, cpu))
  34
  35 struct rseq_percpu_pool_set *rseq_percpu_pool_set_create(void);
  36 int rseq_percpu_pool_set_destroy(struct rseq_percpu_pool_set *pool_set);
  37 int rseq_percpu_pool_set_add_pool(struct rseq_percpu_pool_set *pool_set,
  38                 struct rseq_percpu_pool *pool);
  39
  40 void *rseq_percpu_pool_set_malloc(struct rseq_percpu_pool_set *pool_set, size_t len);
  41 void *rseq_percpu_pool_set_zmalloc(struct rseq_percpu_pool_set *pool_set, size_t len);
  42
  43 #ifdef __cplusplus
  44 }
  45 #endif
  46
  47 #endif /* _RSEQ_PERCPU_ALLOC_H */