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+/*
+ * Copyright (c) 2020, Michael Grunder <michael dot grunder at gmail dot com>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Redis nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef HIREDIS_ALLOC_H
+#define HIREDIS_ALLOC_H
+
+#include <stddef.h> /* for size_t */
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Structure pointing to our actually configured allocators */
+typedef struct hiredisAllocFuncs {
+ void *(*mallocFn)(size_t);
+ void *(*callocFn)(size_t,size_t);
+ void *(*reallocFn)(void*,size_t);
+ char *(*strdupFn)(const char*);
+ void (*freeFn)(void*);
+} hiredisAllocFuncs;
+
+hiredisAllocFuncs hiredisSetAllocators(hiredisAllocFuncs *ha);
+void hiredisResetAllocators(void);
+
+#ifndef _WIN32
+
+/* Hiredis' configured allocator function pointer struct */
+extern hiredisAllocFuncs hiredisAllocFns;
+
+static inline void *hi_malloc(size_t size) {
+ return hiredisAllocFns.mallocFn(size);
+}
+
+static inline void *hi_calloc(size_t nmemb, size_t size) {
+ /* Overflow check as the user can specify any arbitrary allocator */
+ if (SIZE_MAX / size < nmemb)
+ return NULL;
+
+ return hiredisAllocFns.callocFn(nmemb, size);
+}
+
+static inline void *hi_realloc(void *ptr, size_t size) {
+ return hiredisAllocFns.reallocFn(ptr, size);
+}
+
+static inline char *hi_strdup(const char *str) {
+ return hiredisAllocFns.strdupFn(str);
+}
+
+static inline void hi_free(void *ptr) {
+ hiredisAllocFns.freeFn(ptr);
+}
+
+#else
+
+void *hi_malloc(size_t size);
+void *hi_calloc(size_t nmemb, size_t size);
+void *hi_realloc(void *ptr, size_t size);
+char *hi_strdup(const char *str);
+void hi_free(void *ptr);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HIREDIS_ALLOC_H */