1 files changed, 59 insertions, 0 deletions
diff --git a/libmctp/alloc.c b/libmctp/alloc.c
new file mode 100644
index 0000000..84c3f65
--- /dev/null
+++ b/libmctp/alloc.c
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later */
+
+#include <assert.h>
+
+#include "libmctp.h"
+#include "libmctp-alloc.h"
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+struct {
+	void *(*m_alloc)(size_t);
+	void (*m_free)(void *);
+	void *(*m_realloc)(void *, size_t);
+} alloc_ops = {
+#ifdef MCTP_DEFAULT_ALLOC
+	malloc,
+	free,
+	realloc,
+#endif
+};
+
+/* internal-only allocation functions */
+void *__mctp_alloc(size_t size)
+{
+	if (alloc_ops.m_alloc)
+		return alloc_ops.m_alloc(size);
+	if (alloc_ops.m_realloc)
+		return alloc_ops.m_realloc(NULL, size);
+	assert(0);
+	return NULL;
+}
+
+void __mctp_free(void *ptr)
+{
+	if (alloc_ops.m_free)
+		alloc_ops.m_free(ptr);
+	else if (alloc_ops.m_realloc)
+		alloc_ops.m_realloc(ptr, 0);
+	else
+		assert(0);
+}
+
+void *__mctp_realloc(void *ptr, size_t size)
+{
+	if (alloc_ops.m_realloc)
+		return alloc_ops.m_realloc(ptr, size);
+	assert(0);
+	return NULL;
+}
+
+void mctp_set_alloc_ops(void *(*m_alloc)(size_t), void (*m_free)(void *),
+			void *(m_realloc)(void *, size_t))
+{
+	alloc_ops.m_alloc = m_alloc;
+	alloc_ops.m_free = m_free;
+	alloc_ops.m_realloc = m_realloc;
+}