Add support for custom allocators

This makes it explicit in the API where memory is allocated, and allows the
user to provide a custom allocator to avoid the use of the default system
allocator for whatever reason.

1 files changed, 21 insertions, 0 deletions

diff --git a/test/failing_allocator.h b/test/failing_allocator.h
new file mode 100644
index 00000000..7bc514bb
--- /dev/null
+++ b/test/failing_allocator.h
@@ -0,0 +1,21 @@
+// Copyright 2021 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#ifndef SERD_TEST_FAILING_ALLOCATOR_H
+#define SERD_TEST_FAILING_ALLOCATOR_H
+
+#include "serd/serd.h"
+
+#include <stddef.h>
+
+/// An allocator that fails after some number of successes for testing
+typedef struct {
+  SerdAllocator base;          ///< Base allocator instance
+  size_t        n_allocations; ///< Number of attempted allocations
+  size_t        n_remaining;   ///< Number of remaining successful allocations
+} SerdFailingAllocator;
+
+SerdFailingAllocator
+serd_failing_allocator(void);
+
+#endif // SERD_TEST_FAILING_ALLOCATOR_H