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-rw-r--r--git-compat-util.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h
index 0f85674..f243b86 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -188,6 +188,19 @@ static inline void *xcalloc(size_t nmemb, size_t size)
return ret;
}
+static inline void *xmmap(void *start, size_t length,
+ int prot, int flags, int fd, off_t offset)
+{
+ void *ret = mmap(start, length, prot, flags, fd, offset);
+ if (ret == MAP_FAILED) {
+ release_pack_memory(length);
+ ret = mmap(start, length, prot, flags, fd, offset);
+ if (ret == MAP_FAILED)
+ die("Out of memory? mmap failed: %s", strerror(errno));
+ }
+ return ret;
+}
+
static inline ssize_t xread(int fd, void *buf, size_t len)
{
ssize_t nr;