libfrog/ptvar.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2018 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
   5  */
   6 #ifndef __LIBFROG_PTVAR_H__
   7 #define __LIBFROG_PTVAR_H__
   8
   9 struct ptvar;
  10
  11 int ptvar_alloc(size_t nr, size_t size, struct ptvar **pptv);
  12 void ptvar_free(struct ptvar *ptv);
  13 void *ptvar_get(struct ptvar *ptv, int *ret);
  14
  15 /*
  16  * Visit each per-thread value.  Return 0 to continue iteration or nonzero to
  17  * stop iterating and return to the caller.
  18  */
  19 typedef int (*ptvar_iter_fn)(struct ptvar *ptv, void *data, void *foreach_arg);
  20 int ptvar_foreach(struct ptvar *ptv, ptvar_iter_fn fn, void *foreach_arg);
  21
  22 #endif /* __LIBFROG_PTVAR_H__ */