Add util function: free_pointer_array

This function iterates through each element of pointer array, frees
its memory, and finally free the array itself.

2 files changed, 18 insertions, 0 deletions

diff --git a/mem.c b/mem.c
index baa7977..c3d5db3 100644
--- a/mem.c
+++ b/mem.c
@@ -5,6 +5,7 @@
 #include <stdlib.h>
 
 #include "err.h"
+#include "log.h"
 
 void *xmalloc(size_t size)
 {
@@ -24,3 +25,19 @@ void *xrealloc(void *p, size_t size)
 
 	return pmem;
 }
+
+void free_pointer_array(void **array, size_t len)
+{
+	if (!array) {
+		log_write(LOG_WARN, "free_poiner_array: array is NULL");
+		return;
+	}
+
+	for (size_t i = 0; i < len; i++) {
+		if (array[i]) {
+			free(array[i]);
+		}
+	}
+
+	free(array);
+}
diff --git a/mem.h b/mem.h
index 4b9b095..bcc112f 100644
--- a/mem.h
+++ b/mem.h
@@ -5,5 +5,6 @@
 
 void *xmalloc(size_t size);
 void *xrealloc(void *p, size_t size);
+void free_pointer_array(void **array, size_t len);
 
 #endif /* SS_MEM_H */