/*
 * Memory allocation and error handling utilities.
 *
 * Copyright (C) 2009-2015  Red Hat ; see COPYRIGHT for license
 */

#ifndef _LD_UTIL_H_
#define _LD_UTIL_H_

#include <isc/mem.h>

#include <dns/types.h>

#include "log.h"

#define CLEANUP_WITH(result_code)       \
	do {                            \
		result = (result_code); \
		goto cleanup;           \
	} while (0)

#define CHECK(op)                            \
	do {                                 \
		result = (op);               \
		if (result != ISC_R_SUCCESS) \
			goto cleanup;        \
	} while (0)

#define CHECKED_MEM_GET(m, target_ptr, s)                      \
	do {                                                   \
		(target_ptr) = isc_mem_get((m), (s));          \
		if ((target_ptr) == NULL) {                    \
			result = ISC_R_NOMEMORY;               \
			log_error("Memory allocation failed"); \
			goto cleanup;                          \
		}                                              \
	} while (0)

#define CHECKED_MEM_GET_PTR(m, target_ptr) \
	CHECKED_MEM_GET(m, target_ptr, sizeof(*(target_ptr)))

#define CHECKED_MEM_STRDUP(m, source, target)                  \
	do {                                                   \
		(target) = isc_mem_strdup((m), (source));      \
		if ((target) == NULL) {                        \
			result = ISC_R_NOMEMORY;               \
			log_error("Memory allocation failed"); \
			goto cleanup;                          \
		}                                              \
	} while (0)

#define ZERO_PTR(ptr) memset((ptr), 0, sizeof(*(ptr)))

#define MEM_PUT_AND_DETACH(target_ptr)                        \
	isc_mem_putanddetach(&(target_ptr)->mctx, target_ptr, \
			     sizeof(*(target_ptr)))

#endif /* !_LD_UTIL_H_ */
