about summary refs log tree commit diff
path: root/third_party/git/compat/qsort_s.c
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/git/compat/qsort_s.c')
-rw-r--r--third_party/git/compat/qsort_s.c69
1 files changed, 0 insertions, 69 deletions
diff --git a/third_party/git/compat/qsort_s.c b/third_party/git/compat/qsort_s.c
deleted file mode 100644
index 52d1f0a73d..0000000000
--- a/third_party/git/compat/qsort_s.c
+++ /dev/null
@@ -1,69 +0,0 @@
-#include "../git-compat-util.h"
-
-/*
- * A merge sort implementation, simplified from the qsort implementation
- * by Mike Haertel, which is a part of the GNU C Library.
- * Added context pointer, safety checks and return value.
- */
-
-static void msort_with_tmp(void *b, size_t n, size_t s,
-			   int (*cmp)(const void *, const void *, void *),
-			   char *t, void *ctx)
-{
-	char *tmp;
-	char *b1, *b2;
-	size_t n1, n2;
-
-	if (n <= 1)
-		return;
-
-	n1 = n / 2;
-	n2 = n - n1;
-	b1 = b;
-	b2 = (char *)b + (n1 * s);
-
-	msort_with_tmp(b1, n1, s, cmp, t, ctx);
-	msort_with_tmp(b2, n2, s, cmp, t, ctx);
-
-	tmp = t;
-
-	while (n1 > 0 && n2 > 0) {
-		if (cmp(b1, b2, ctx) <= 0) {
-			memcpy(tmp, b1, s);
-			tmp += s;
-			b1 += s;
-			--n1;
-		} else {
-			memcpy(tmp, b2, s);
-			tmp += s;
-			b2 += s;
-			--n2;
-		}
-	}
-	if (n1 > 0)
-		memcpy(tmp, b1, n1 * s);
-	memcpy(b, t, (n - n2) * s);
-}
-
-int git_qsort_s(void *b, size_t n, size_t s,
-		int (*cmp)(const void *, const void *, void *), void *ctx)
-{
-	const size_t size = st_mult(n, s);
-	char buf[1024];
-
-	if (!n)
-		return 0;
-	if (!b || !cmp)
-		return -1;
-
-	if (size < sizeof(buf)) {
-		/* The temporary array fits on the small on-stack buffer. */
-		msort_with_tmp(b, n, s, cmp, buf, ctx);
-	} else {
-		/* It's somewhat large, so malloc it.  */
-		char *tmp = xmalloc(size);
-		msort_with_tmp(b, n, s, cmp, tmp, ctx);
-		free(tmp);
-	}
-	return 0;
-}