From 69cfde45160c1e4541babdeca163ea5c7ddaefa8 Mon Sep 17 00:00:00 2001
From: topjohnwu <topjohnwu@gmail.com>
Date: Fri, 26 May 2017 22:59:17 +0800
Subject: [PATCH] Add new function for vector (future proof)

---
 jni/utils/vector.c | 6 ++++++
 jni/utils/vector.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/jni/utils/vector.c b/jni/utils/vector.c
index bd2c323e0..43e5d6b59 100644
--- a/jni/utils/vector.c
+++ b/jni/utils/vector.c
@@ -23,6 +23,12 @@ void vec_push_back(struct vector *v, void *p) {
 	++vec_size(v);
 }
 
+void *vec_pop_back(struct vector *v) {
+	void *ret = vec_entry(v)[vec_size(v) - 1];
+	--vec_size(v);
+	return ret;
+}
+
 void vec_sort(struct vector *v, int (*compar)(const void *, const void *)) {
 	if (v == NULL) return;
 	qsort(vec_entry(v), vec_size(v), sizeof(void*), compar);
diff --git a/jni/utils/vector.h b/jni/utils/vector.h
index ef169f21d..3d74902c2 100644
--- a/jni/utils/vector.h
+++ b/jni/utils/vector.h
@@ -14,6 +14,7 @@ struct vector {
 
 void vec_init(struct vector *v);
 void vec_push_back(struct vector *v, void *p);
+void *vec_pop_back(struct vector *v);
 void vec_sort(struct vector *v, int (*compar)(const void *, const void *));
 void vec_destroy(struct vector *v);
 void vec_deep_destroy(struct vector *v);