mmap_limit: introduce GIT_MMAP_LIMIT to allow testing expected mmap size

diff --git a/wrapper.c b/wrapper.c
index bc1bfb86003cb4133cc4ce3ce6423ce780ed7c84..c5204f7a07bd011df913c888475746834df79d7d 100644 (file)
--- a/wrapper.c
+++ b/wrapper.c
@@ -11,14 +11,15 @@ static void (*try_to_free_routine)(size_t size) = do_nothing;
 
 static void memory_limit_check(size_t size)
 {
-       static int limit = -1;
-       if (limit == -1) {
-               const char *env = getenv("GIT_ALLOC_LIMIT");
-               limit = env ? atoi(env) * 1024 : 0;
+       static size_t limit = 0;
+       if (!limit) {
+               limit = git_env_ulong("GIT_ALLOC_LIMIT", 0);
+               if (!limit)
+                       limit = SIZE_MAX;
        }
-       if (limit && size > limit)
-               die("attempting to allocate %"PRIuMAX" over limit %d",
-                   (intmax_t)size, limit);
+       if (size > limit)
+               die("attempting to allocate %"PRIuMAX" over limit %"PRIuMAX,
+                   (uintmax_t)size, (uintmax_t)limit);
 }
 
 try_to_free_t set_try_to_free_routine(try_to_free_t routine)