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Merge branch 'jm/cache-entry-from-mem-pool'

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For a large tree, the index needs to hold many cache entries
allocated on heap.  These cache entries are now allocated out of a
dedicated memory pool to amortize malloc(3) overhead.

* jm/cache-entry-from-mem-pool:
  block alloc: add validations around cache_entry lifecyle
  block alloc: allocate cache entries from mem_pool
  mem-pool: fill out functionality
  mem-pool: add life cycle management functions
  mem-pool: only search head block for available space
  block alloc: add lifecycle APIs for cache_entry structs
  read-cache: teach make_cache_entry to take object_id
  read-cache: teach refresh_cache_entry to take istate
This commit is contained in:
Junio C Hamano
2018-08-02 15:30:43 -07:00
parent 30bf8d9f4f 8616a2d0cb
commit ae533c4a92
16 changed files with 515 additions and 134 deletions
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4
tree.c
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@@ -19,15 +19,13 @@ static int read_one_entry_opt(struct index_state *istate,
unsigned mode, int stage, int opt)
{
int len;
unsigned int size;
struct cache_entry *ce;
if (S_ISDIR(mode))
return READ_TREE_RECURSIVE;
len = strlen(pathname);
size = cache_entry_size(baselen + len);
ce = xcalloc(1, size);
ce = make_empty_cache_entry(istate, baselen + len);
ce->ce_mode = create_ce_mode(mode);
ce->ce_flags = create_ce_flags(stage);