src/offmap.h

   1 /*
   2  * Copyright (C) 2012 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #ifndef INCLUDE_offmap_h__
   8 #define INCLUDE_offmap_h__
   9
  10 #include "common.h"
  11 #include "git2/types.h"
  12
  13 #define kmalloc git__malloc
  14 #define kcalloc git__calloc
  15 #define krealloc git__realloc
  16 #define kreallocarray git__reallocarray
  17 #define kfree git__free
  18 #include "khash.h"
  19
  20 __KHASH_TYPE(off, git_off_t, void *);
  21 typedef khash_t(off) git_offmap;
  22
  23 #define GIT__USE_OFFMAP \
  24         __KHASH_IMPL(off, static kh_inline, git_off_t, void *, 1, kh_int64_hash_func, kh_int64_hash_equal);
  25
  26 #define git_offmap_alloc()  kh_init(off)
  27 #define git_offmap_free(h)  kh_destroy(off, h), h = NULL
  28 #define git_offmap_clear(h) kh_clear(off, h)
  29
  30 #define git_offmap_num_entries(h) kh_size(h)
  31
  32 #define git_offmap_lookup_index(h, k)  kh_get(off, h, k)
  33 #define git_offmap_valid_index(h, idx) (idx != kh_end(h))
  34
  35 #define git_offmap_exists(h, k) (kh_get(off, h, k) != kh_end(h))
  36
  37 #define git_offmap_value_at(h, idx)        kh_val(h, idx)
  38 #define git_offmap_set_value_at(h, idx, v) kh_val(h, idx) = v
  39 #define git_offmap_delete_at(h, idx)       kh_del(off, h, idx)
  40
  41 #define git_offmap_insert(h, key, val, rval) do { \
  42         khiter_t __pos = kh_put(off, h, key, &rval); \
  43         if (rval >= 0) { \
  44                 if (rval == 0) kh_key(h, __pos) = key; \
  45                 kh_val(h, __pos) = val; \
  46         } } while (0)
  47
  48 #define git_offmap_insert2(h, key, val, oldv, rval) do { \
  49         khiter_t __pos = kh_put(off, h, key, &rval); \
  50         if (rval >= 0) { \
  51                 if (rval == 0) { \
  52                         oldv = kh_val(h, __pos); \
  53                         kh_key(h, __pos) = key; \
  54                 } else { oldv = NULL; } \
  55                 kh_val(h, __pos) = val; \
  56         } } while (0)
  57
  58 #define git_offmap_delete(h, key) do { \
  59         khiter_t __pos = git_offmap_lookup_index(h, key); \
  60         if (git_offmap_valid_index(h, __pos)) \
  61                 git_offmap_delete_at(h, __pos); } while (0)
  62
  63 #define git_offmap_foreach              kh_foreach
  64 #define git_offmap_foreach_value        kh_foreach_value
  65
  66 #endif