common/cache.h

   1 #ifndef CACHE_H
   2 #define CACHE_H
   3
   4 #include "git-compat-util.h"
   5 #include "strbuf.h"
   6
   7 enum date_mode {
   8         DATE_NORMAL = 0,
   9         DATE_RELATIVE,
  10         DATE_SHORT,
  11         DATE_LOCAL,
  12         DATE_ISO8601,
  13         DATE_RFC2822
  14 };
  15
  16 #define alloc_nr(x) (((x)+16)*3/2)
  17
  18 /*
  19  * Realloc the buffer pointed at by variable 'x' so that it can hold
  20  * at least 'nr' entries; the number of entries currently allocated
  21  * is 'alloc', using the standard growing factor alloc_nr() macro.
  22  *
  23  * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
  24  */
  25 #define ALLOC_GROW(x, nr, alloc) \
  26         do { \
  27                 if ((nr) > alloc) { \
  28                         if (alloc_nr(alloc) < (nr)) \
  29                                 alloc = (nr); \
  30                         else \
  31                                 alloc = alloc_nr(alloc); \
  32                         x = xrealloc((x), alloc * sizeof(*(x))); \
  33                 } \
  34         } while(0)
  35
  36 struct pack_window {
  37         struct pack_window *next;
  38         unsigned char *base;
  39         off_t offset;
  40         size_t len;
  41         unsigned int last_used;
  42         unsigned int inuse_cnt;
  43 };
  44
  45 extern struct packed_git {
  46         struct packed_git *next;
  47         struct pack_window *windows;
  48         off_t pack_size;
  49         const void *index_data;
  50         size_t index_size;
  51         uint32_t num_objects;
  52         uint32_t num_bad_objects;
  53         unsigned char *bad_object_sha1;
  54         int index_version;
  55         time_t mtime;
  56         int pack_fd;
  57         int pack_local;
  58         unsigned char sha1[20];
  59         /* something like ".git/objects/pack/xxxxx.pack" */
  60         char pack_name[FLEX_ARRAY]; /* more */
  61 } *packed_git;
  62
  63 #endif /* CACHE_H */