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error.h
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248 lines (216 loc) · 10.4 KB
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/*
* Copyright (c) 2014 Harrison Caudill
* All Rights Reserved
* harrison@hypersphere.org
*/
#ifndef _ERROR_H
#define _ERROR_H
#include <stdint.h>
#include <sys/errno.h>
#include "error_codes.h"
/*
* Error Type (64-bits):
* 0 1 16 24 32 64
* +-+---------------+--------+--------+--------------------------------+
* |E| RESERVED | FLAGS | SUBSYS | ERROR CODE |
* +-+---------------+--------+--------+--------------------------------+
*
*/
typedef union
{
uint64_t bits;
struct
{
uint16_t is_error :1;
uint16_t reserved :15;
union
{
uint8_t flags;
struct
{
uint8_t is_transient :1;
uint8_t is_critical :1;
uint8_t spare_2 :1;
uint8_t spare_3 :1;
uint8_t spare_4 :1;
uint8_t spare_5 :1;
uint8_t spare_6 :1;
uint8_t spare_7 :1;
} fields;
} flags;
uint8_t subsys;
uint32_t code;
#ifdef DEBUG
const char *file;
const char *function;
int line;
#endif
} fields;
} err_t;
#define ERR_FLAG_TRANSIENT (0x1<<7)
#define ERR_FLAG_CRITICAL (0x1<<6)
#define ERR_IS_TRANSIENT(err) ((err).fields.flags.fields.is_transient)
#define ERR_IS_CRITICAL(err) ((err).fields.flags.fields.is_critical)
#define ERR_STATIC_MASK 0x8000ffffffffffff
#define ERR_STATIC_INT(err) ((err).bits & ERR_STATIC_MASK)
#define ERR_COMPARE(a, b) (ERR_STATIC_INT(a) == ERR_STATIC_INT(b))
#define ERR_ERRNO() ERR_NEW_ERROR(TRUE, 0, ERR_SUBSYS_ERRNO, errno)
#define ERR_INIT() \
err_t __err_retval = ERR_OK
#define ERR_RETURN() return ERR_RETVAL()
#define ERR_IS_ERROR(err) !!(err).fields.is_error
#define ERR_IS_OK(err) !ERR_IS_ERROR(err)
/* This no-op cast is performed so that any attempt to use the retval
* as an lvalue will fail. It also prevents its use as an rvalue for
* &ERR_RETVAL()
*/
#define ERR_RETVAL() ((err_t)(__err_retval.bits))
#define ERR_DONE() \
__error_done: \
do{}while(FALSE) /* To handle the danglging semicolon */
#define ERR_GOTO_DONE() goto __error_done
#define ERR_RETURN() return ERR_RETVAL()
#define ERR_SET(err) __err_retval = (err)
#define ERR_NAME(err) ERROR_NAME_STRINGS[err.fields.subsys][err.fields.code]
#define ERR_DESC(err) ERROR_SHORT_STRINGS[err.fields.subsys][err.fields.code]
#define ERR_OOM_CHECK(ptr) \
ERR_CRIT_PTR((ptr), \
ERR_ERRNO_ENOMEM, \
"Out of Memory")
#define ERROR_LOG_ERROR(lvl, err, msg, ...) \
do { \
LOG(lvl, "+------------------------------------------------+"); \
LOG(lvl, " Error: %s", ERR_NAME(err)); \
LOG(lvl, " Description: %s", ERR_DESC(err)); \
LOG(lvl, " File: %s", __FILE__); \
LOG(lvl, " Function: %s", __FUNCTION__); \
LOG(lvl, " Line: %d", __LINE__); \
LOG(lvl, " Msg:"); \
LOG(lvl, msg, ## __VA_ARGS__); \
LOG(lvl, "+------------------------------------------------+"); \
} while(FALSE)
/* Master macros */
#define __ERR_PTR(_ptr, _err, _lvl, msg, ...) \
do { \
void *__ptr = (_ptr); \
err_t __err = (_err); \
int __lvl = (_lvl); \
if (NULL == __ptr) \
{ \
if (0 <= __lvl) \
{ \
ERROR_LOG_ERROR(__lvl, __err, \
msg, ## __VA_ARGS__); \
} \
ERR_SET(__err); \
ERR_GOTO_DONE(); \
} \
} while(FALSE)
#define __ERR_COND(_val, _err, _lvl, msg, ...) \
do { \
int __val = !!(_val); \
err_t __err = (_err); \
int __lvl = (_lvl); \
if (__val) \
{ \
if (0 <= __lvl) \
{ \
ERROR_LOG_ERROR(__lvl, __err, \
msg, ## __VA_ARGS__); \
} \
ERR_SET(__err); \
ERR_GOTO_DONE(); \
} \
} while(FALSE)
#define __ERR_RET(_val, _lvl, msg, ...) \
do { \
int __val = (_val); \
err_t __err = ERR_ERRNO(); \
int __lvl = (_lvl); \
if (0 > __val) \
{ \
if (0 <= __lvl) \
{ \
ERROR_LOG_ERROR(__lvl, __err, \
msg, ## __VA_ARGS__); \
} \
ERR_SET(__err); \
ERR_GOTO_DONE(); \
} \
} while(FALSE)
#define __ERR_ERR(_err, _lvl, msg, ...) \
do { \
err_t __err = (_err); \
int __lvl = (_lvl); \
if (ERR_IS_ERROR(__err)) \
{ \
if (0 <= __lvl) \
{ \
ERROR_LOG_ERROR(__lvl, __err, \
msg, ## __VA_ARGS__); \
} \
ERR_SET(__err); \
ERR_GOTO_DONE(); \
} \
} while(FALSE)
#define ERR_SILENT_PTR(ptr, err) __ERR_PTR(ptr, err, -1, " ")
#define ERR_SILENT_COND(val, err) __ERR_COND(val, err, -1, " ")
#define ERR_SILENT_RET(val) __ERR_RET(val, -1, " ")
#define ERR_SILENT_ERR(err) __ERR_ERR(err, -1, " ")
#define ERR_DEF_PTR(ptr, err, msg, ...) \
__ERR_PTR(ptr, err, ERR_LOG_LVL_DEFAULT, msg, ## __VA_ARGS__)
#define ERR_DEF_COND(val, err, msg, ...) \
__ERR_COND(val, err, ERR_LOG_LVL_DEFAULT, msg, ## __VA_ARGS__)
#define ERR_DEF_RET(val, msg, ...) \
__ERR_RET(val, ERR_LOG_LVL_DEFAULT, msg, ## __VA_ARGS__)
#define ERR_DEF_ERR(err, msg, ...) \
__ERR_ERR(err, ERR_LOG_LVL_DEFAULT, msg, ## __VA_ARGS__)
#define ERR_VERB_PTR(ptr, err, msg, ...) \
__ERR_PTR(ptr, err, ERR_LOG_LVL_VERBOSE, msg, ## __VA_ARGS__)
#define ERR_VERB_COND(val, err, msg, ...) \
__ERR_COND(val, err, ERR_LOG_LVL_VERBOSE, msg, ## __VA_ARGS__)
#define ERR_VERB_RET(val, msg, ...) \
__ERR_RET(val, ERR_LOG_LVL_VERBOSE, msg, ## __VA_ARGS__)
#define ERR_VERB_ERR(err, msg, ...) \
__ERR_ERR(err, ERR_LOG_LVL_VERBOSE, msg, ## __VA_ARGS__)
#define ERR_DEBUG_PTR(ptr, err, msg, ...) \
__ERR_PTR(ptr, err, ERR_LOG_LVL_DEBUG, msg, ## __VA_ARGS__)
#define ERR_DEBUG_COND(val, err, msg, ...) \
__ERR_COND(val, err, ERR_LOG_LVL_DEBUG, msg, ## __VA_ARGS__)
#define ERR_DEBUG_RET(val, msg, ...) \
__ERR_RET(val, ERR_LOG_LVL_DEBUG, msg, ## __VA_ARGS__)
#define ERR_DEBUG_ERR(err, msg, ...) \
__ERR_ERR(err, ERR_LOG_LVL_DEBUG, msg, ## __VA_ARGS__)
#define ERR_INFO_PTR(ptr, err, msg, ...) \
__ERR_PTR(ptr, err, ERR_LOG_LVL_INFO, msg, ## __VA_ARGS__)
#define ERR_INFO_COND(val, err, msg, ...) \
__ERR_COND(val, err, ERR_LOG_LVL_INFO, msg, ## __VA_ARGS__)
#define ERR_INFO_RET(val, msg, ...) \
__ERR_RET(val, ERR_LOG_LVL_INFO, msg, ## __VA_ARGS__)
#define ERR_INFO_ERR(err, msg, ...) \
__ERR_ERR(err, ERR_LOG_LVL_INFO, msg, ## __VA_ARGS__)
#define ERR_WARN_PTR(ptr, err, msg, ...) \
__ERR_PTR(ptr, err, ERR_LOG_LVL_WARN, msg, ## __VA_ARGS__)
#define ERR_WARN_COND(val, err, msg, ...) \
__ERR_COND(val, err, ERR_LOG_LVL_WARN, msg, ## __VA_ARGS__)
#define ERR_WARN_RET(val, msg, ...) \
__ERR_RET(val, ERR_LOG_LVL_WARN, msg, ## __VA_ARGS__)
#define ERR_WARN_ERR(err, msg, ...) \
__ERR_ERR(err, ERR_LOG_LVL_WARN, msg, ## __VA_ARGS__)
#define ERR_ERROR_PTR(ptr, err, msg, ...) \
__ERR_PTR(ptr, err, ERR_LOG_LVL_ERROR, msg, ## __VA_ARGS__)
#define ERR_ERROR_COND(val, err, msg, ...) \
__ERR_COND(val, err, ERR_LOG_LVL_ERROR, msg, ## __VA_ARGS__)
#define ERR_ERROR_RET(val, msg, ...) \
__ERR_RET(val, ERR_LOG_LVL_ERROR, msg, ## __VA_ARGS__)
#define ERR_ERROR_ERR(err, msg, ...) \
__ERR_ERR(err, ERR_LOG_LVL_ERROR, msg, ## __VA_ARGS__)
#define ERR_CRIT_PTR(ptr, err, msg, ...) \
__ERR_PTR(ptr, err, ERR_LOG_LVL_CRITICAL, msg, ## __VA_ARGS__)
#define ERR_CRIT_COND(val, err, msg, ...) \
__ERR_COND(val, err, ERR_LOG_LVL_CRITICAL, msg, ## __VA_ARGS__)
#define ERR_CRIT_RET(val, msg, ...) \
__ERR_RET(val, ERR_LOG_LVL_CRITICAL, msg, ## __VA_ARGS__)
#define ERR_CRIT_ERR(err, msg, ...) \
__ERR_ERR(err, ERR_LOG_LVL_CRITICAL, msg, ## __VA_ARGS__)
#endif