From 66b00e2966d348a298ebcb4881c01b538058a2ef Mon Sep 17 00:00:00 2001
From: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Date: Thu, 22 Feb 2024 10:13:51 -0400
Subject: [PATCH] util/ralloc: add memdup
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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27762>
---
 src/util/ralloc.c | 12 ++++++++++++
 src/util/ralloc.h |  5 +++++
 2 files changed, 17 insertions(+)

diff --git a/src/util/ralloc.c b/src/util/ralloc.c
index aaa1f28094e..04bb6cc1d71 100644
--- a/src/util/ralloc.c
+++ b/src/util/ralloc.c
@@ -365,6 +365,18 @@ ralloc_set_destructor(const void *ptr, void(*destructor)(void *))
    info->destructor = destructor;
 }
 
+void *
+ralloc_memdup(const void *ctx, const void *mem, size_t n)
+{
+   void *ptr = ralloc_size(ctx, n);
+
+   if (unlikely(ptr == NULL))
+      return NULL;
+
+   memcpy(ptr, mem, n);
+   return ptr;
+}
+
 char *
 ralloc_strdup(const void *ctx, const char *str)
 {
diff --git a/src/util/ralloc.h b/src/util/ralloc.h
index 1af4da8c824..f12606381f9 100644
--- a/src/util/ralloc.h
+++ b/src/util/ralloc.h
@@ -313,6 +313,11 @@ void *ralloc_parent(const void *ptr);
  */
 void ralloc_set_destructor(const void *ptr, void(*destructor)(void *));
 
+/**
+ * Duplicate memory, allocating the memory from the given context.
+ */
+void *ralloc_memdup(const void *ctx, const void *mem, size_t n) MALLOCLIKE;
+
 /// \defgroup array String Functions @{
 /**
  * Duplicate a string, allocating the memory from the given context.