libxfs/kmem.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3
   4 #include "libxfs_priv.h"
   5
   6 /*
   7  * Simple memory interface
   8  */
   9
  10 kmem_zone_t *
  11 kmem_zone_init(int size, char *name)
  12 {
  13         kmem_zone_t     *ptr = malloc(sizeof(kmem_zone_t));
  14
  15         if (ptr == NULL) {
  16                 fprintf(stderr, _("%s: zone init failed (%s, %d bytes): %s\n"),
  17                         progname, name, (int)sizeof(kmem_zone_t),
  18                         strerror(errno));
  19                 exit(1);
  20         }
  21         ptr->zone_unitsize = size;
  22         ptr->zone_name = name;
  23         ptr->allocated = 0;
  24         return ptr;
  25 }
  26
  27 int
  28 kmem_zone_destroy(kmem_zone_t *zone)
  29 {
  30         int     leaked = 0;
  31
  32         if (getenv("LIBXFS_LEAK_CHECK") && zone->allocated) {
  33                 leaked = 1;
  34                 fprintf(stderr, "zone %s freed with %d items allocated\n",
  35                                 zone->zone_name, zone->allocated);
  36         }
  37         free(zone);
  38         return leaked;
  39 }
  40
  41 void *
  42 kmem_zone_alloc(kmem_zone_t *zone, int flags)
  43 {
  44         void    *ptr = malloc(zone->zone_unitsize);
  45
  46         if (ptr == NULL) {
  47                 fprintf(stderr, _("%s: zone alloc failed (%s, %d bytes): %s\n"),
  48                         progname, zone->zone_name, zone->zone_unitsize,
  49                         strerror(errno));
  50                 exit(1);
  51         }
  52         zone->allocated++;
  53         return ptr;
  54 }
  55 void *
  56 kmem_zone_zalloc(kmem_zone_t *zone, int flags)
  57 {
  58         void    *ptr = kmem_zone_alloc(zone, flags);
  59
  60         memset(ptr, 0, zone->zone_unitsize);
  61         return ptr;
  62 }
  63
  64
  65 void *
  66 kmem_alloc(size_t size, int flags)
  67 {
  68         void    *ptr = malloc(size);
  69
  70         if (ptr == NULL) {
  71                 fprintf(stderr, _("%s: malloc failed (%d bytes): %s\n"),
  72                         progname, (int)size, strerror(errno));
  73                 exit(1);
  74         }
  75         return ptr;
  76 }
  77
  78 void *
  79 kmem_zalloc(size_t size, int flags)
  80 {
  81         void    *ptr = kmem_alloc(size, flags);
  82
  83         memset(ptr, 0, size);
  84         return ptr;
  85 }
  86
  87 void *
  88 kmem_realloc(void *ptr, size_t new_size, int flags)
  89 {
  90         ptr = realloc(ptr, new_size);
  91         if (ptr == NULL) {
  92                 fprintf(stderr, _("%s: realloc failed (%d bytes): %s\n"),
  93                         progname, (int)new_size, strerror(errno));
  94                 exit(1);
  95         }
  96         return ptr;
  97 }