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mariadb_python.h
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mariadb_python.h
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/******************************************************************************
Copyright (C) 2018-2020 Georg Richter and MariaDB Corporation AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not see <http://www.gnu.org/licenses>
or write to the Free Software Foundation, Inc.,
51 Franklin St., Fifth Floor, Boston, MA 02110, USA
******************************************************************************/
#define PY_SSIZE_T_CLEAN
#include "Python.h"
#include "bytesobject.h"
#include "structmember.h"
#include "structseq.h"
#include <stdarg.h>
#include <stdint.h>
#include <mysql.h>
#include <errmsg.h>
#include <mysqld_error.h>
#include <time.h>
#include <docs/common.h>
#include <limits.h>
#if defined(_WIN32)
#include "config_win.h"
#include <windows.h>
#ifdef _MSC_VER
typedef SSIZE_T ssize_t;
#endif
typedef CRITICAL_SECTION pthread_mutex_t;
#define pthread_mutex_init(A,B) InitializeCriticalSection(A)
#define pthread_mutex_lock(A) (EnterCriticalSection(A),0)
#define pthread_mutex_unlock(A) LeaveCriticalSection(A)
#define pthread_mutex_destroy(A) DeleteCriticalSection(A)
#define pthread_self() GetCurrentThreadId()
#include <malloc.h>
#else
#include <pthread.h>
#include <limits.h>
#endif /* defined(_WIN32) */
#define CHECK_TYPE(obj, type) \
(Py_TYPE((obj)) == type || PyType_IsSubtype(Py_TYPE((obj)), type))
#ifndef MIN
#define MIN(a,b) (a) < (b) ? (a) : (b)
#endif
#ifndef MAX
#define MAX(a,b) (a) > (b) ? (a) : (b)
#endif
#if !defined(__GNUC__) && !defined(__clang__)
#define __attribute__(A)
#endif
#ifdef _WIN32
int clock_gettime(int dummy, struct timespec *ct);
#define CLOCK_MONOTONIC_RAW 1
#endif
#define REQUIRED_CC_VERSION 30103
#if MARIADB_PACKAGE_VERSION_ID < REQUIRED_CC_VERSION
#error Minimum required version of MariaDB Connector/C is 3.1.3
#endif
#if defined(_WIN32) && defined(_MSVC)
#ifndef L64
#define L64(x) x##i64
#endif
#else
#ifndef L64
#define L64(x) x##LL
#endif /* L64 */
#endif /* _WIN32 */
#define STRINGIFY(n) #n
#define TOSTRING(n) STRINGIFY(n)
#define PY_MARIADB_VERSION TOSTRING(PY_MARIADB_MAJOR_VERSION) "." \
TOSTRING(PY_MARIADB_MINOR_VERSION) "." TOSTRING(PY_MARIADB_PATCH_VERSION)
#define MAX_TPC_XID_SIZE 64
#define POOL_DEFAULT_SIZE 5
/* Magic constant for checking dynamic columns */
#define PYTHON_DYNCOL_VALUE 0xA378BD8E
enum enum_dataapi_groups
{
DBAPI_NUMBER= 1,
DBAPI_STRING,
DBAPI_DATETIME,
DBAPI_BINARY,
DBAPI_ROWID
};
enum enum_extended_field_type
{
EXT_TYPE_NONE=0,
EXT_TYPE_JSON=1
};
enum enum_result_format
{
RESULT_TUPLE= 0,
RESULT_NAMED_TUPLE,
RESULT_DICTIONARY
};
enum enum_dyncol_type
{
DYNCOL_LIST= 1,
DYNCOL_TUPLE,
DYNCOL_SET,
DYNCOL_DICT,
DYNCOL_ODICT,
DYNCOL_LAST
};
enum enum_tpc_state
{
TPC_STATE_NONE= 0,
TPC_STATE_XID,
TPC_STATE_PREPARE
};
enum enum_paramstyle
{
NONE=0,
QMARK,
FORMAT,
PYFORMAT
};
typedef struct st_lex_str {
char *str;
size_t length;
} MrdbString;
typedef struct st_parser {
MrdbString statement;
uint8_t in_literal[3];
uint8_t in_comment;
uint8_t in_values;
uint8_t is_insert;
uint8_t comment_eol;
uint32_t param_count;
uint32_t key_count;
char* value_ofs;
enum enum_paramstyle paramstyle;
MrdbString *keys;
MYSQL *mysql;
} MrdbParser;
struct mrdb_pool;
/* PEP-249: Connection object */
typedef struct {
PyObject_HEAD
MYSQL *mysql;
int open;
uint8_t is_buffered;
uint8_t is_closed;
enum enum_tpc_state tpc_state;
char xid[150]; /* large enough, to hold 2 * MAX_TPC_XID size + integer value */
PyObject *dsn; /* always null */
const char *tls_cipher;
const char *tls_version;
const char *host;
const char *unix_socket;
int port;
const char *charset;
const char *collation;
struct mrdb_pool *pool;
uint8_t inuse;
uint8_t status;
struct timespec last_used;
/* capabilities */
unsigned long client_capabilities;
unsigned long server_capabilities;
unsigned long extended_server_capabilities;
PyThreadState *thread_state;
PyObject *converter;
PyObject *server_version_info;
} MrdbConnection;
typedef struct mrdb_pool{
PyObject_HEAD
pthread_mutex_t lock;
char *pool_name;
size_t pool_name_length;
uint32_t pool_size;
uint8_t reset_session;
uint32_t idle_timeout;
uint32_t acquire_timeout;
PyObject *configuration;
MrdbConnection **connection;
uint32_t connection_cnt;
uint16_t max_size;
uint8_t closed;
} MrdbPool;
typedef struct {
enum enum_field_types type;
PyObject *Value;
char indicator;
} Mariadb_Value;
/* Parameter info for cursor.executemany()
operations */
typedef struct {
enum enum_field_types type;
size_t bits; /* for PyLong Object */
PyTypeObject *ob_type;
uint8_t has_indicator;
} MrdbParamInfo;
typedef struct {
PyObject *value;
char indicator;
enum enum_field_types type;
size_t length;
uint8_t free_me;
void *buffer;
unsigned char num[8];
MYSQL_TIME tm;
uint8_t is_null;
} MrdbParamValue;
typedef struct {
PyObject_HEAD
enum enum_indicator_type indicator;
} MrdbIndicator;
/* PEP-249: Cursor object */
typedef struct {
PyObject_HEAD
MrdbConnection *connection;
MYSQL_STMT *stmt;
MYSQL_RES *result;
PyObject *data;
uint32_t array_size;
uint32_t param_count;
uint32_t row_array_size; /* for fetch many */
MrdbParamInfo *paraminfo;
MrdbParamValue *value;
MYSQL_BIND *params;
MYSQL_BIND *bind;
MYSQL_FIELD *fields;
char *statement;
unsigned long statement_len;
PyObject **values;
PyStructSequence_Field *sequence_fields;
PyTypeObject *sequence_type;
unsigned long prefetch_rows;
unsigned long cursor_type;
int64_t affected_rows;
uint32_t field_count;
int64_t row_count;
uint64_t lastrow_id;
unsigned long row_number;
enum enum_result_format result_format;
uint8_t is_prepared;
uint8_t is_buffered;
uint8_t fetched;
uint8_t closed;
uint8_t is_text;
uint8_t is_binary;
MrdbParser *parser;
PyThreadState *thread_state;
} MrdbCursor;
typedef struct
{
PyObject_HEAD
} Mariadb_Fieldinfo;
typedef struct
{
PyObject_HEAD
int32_t *types;
} Mariadb_DBAPIType;
typedef struct {
ps_field_fetch_func func;
int pack_len;
unsigned long max_len;
} Mariadb_Conversion;
extern char *dsn_keys[];
/* Exceptions */
extern PyObject *Mariadb_InterfaceError;
extern PyObject *Mariadb_Error;
extern PyObject *Mariadb_DatabaseError;
extern PyObject *Mariadb_DataError;
extern PyObject *Mariadb_PoolError;
extern PyObject *Mariadb_OperationalError;
extern PyObject *Mariadb_IntegrityError;
extern PyObject *Mariadb_InternalError;
extern PyObject *Mariadb_ProgrammingError;
extern PyObject *Mariadb_NotSupportedError;
extern PyObject *Mariadb_Warning;
extern PyObject *decimal_module,
*decimal_type;
/* Object types */
extern PyTypeObject MrdbPool_Type;
extern PyTypeObject Mariadb_Fieldinfo_Type;
extern PyTypeObject MrdbIndicator_Type;
extern PyTypeObject MrdbConnection_Type;
extern PyTypeObject MrdbCursor_Type;
extern PyTypeObject Mariadb_DBAPIType_Type;
int Mariadb_traverse(PyObject *self,
visitproc visit,
void *arg);
/* Function prototypes */
void
mariadb_throw_exception(void *handle,
PyObject *execption_type,
int8_t is_statement,
const char *message,
...);
enum enum_extended_field_type mariadb_extended_field_type(const MYSQL_FIELD *field);
PyObject *
MrdbIndicator_Object(uint32_t type);
long
MrdbIndicator_AsLong(PyObject *v);
PyObject *
Mariadb_DBAPIType_Object(uint32_t type);
PyObject *
MrdbConnection_affected_rows(MrdbConnection *self);
PyObject *
MrdbConnection_ping(MrdbConnection *self);
PyObject *
MrdbConnection_kill(MrdbConnection *self, PyObject *args);
PyObject *
MrdbConnection_reconnect(MrdbConnection *self);
PyObject *
MrdbConnection_reset(MrdbConnection *self);
PyObject *
MrdbConnection_autocommit(MrdbConnection *self, PyObject *args);
PyObject *
MrdbConnection_change_user(MrdbConnection *self, PyObject *args);
PyObject
*MrdbConnection_rollback(MrdbConnection *self);
PyObject *
MrdbConnection_commit(MrdbConnection *self);
PyObject *
MrdbConnection_close(MrdbConnection *self);
PyObject *
MrdbConnection_connect( PyObject *self,PyObject *args, PyObject *kwargs);
void
MrdbConnection_SetAttributes(MrdbConnection *self);
/* Pooling */
PyObject *
MrdbPool_add(PyObject *self, PyObject *args, PyObject *kwargs);
PyObject *
MrdbPool_getconnection(MrdbPool *self);
/* TPC methods */
PyObject *
MrdbConnection_xid(MrdbConnection *self, PyObject *args);
PyObject *
MrdbConnection_tpc_begin(MrdbConnection *self, PyObject *args);
PyObject *
MrdbConnection_tpc_commit(MrdbConnection *self, PyObject *args);
PyObject *
MrdbConnection_tpc_rollback(MrdbConnection *self, PyObject *args);
PyObject *
MrdbConnection_tpc_prepare(MrdbConnection *self);
PyObject *
MrdbConnection_tpc_recover(MrdbConnection *self);
/* codecs prototypes */
uint8_t
mariadb_check_bulk_parameters(MrdbCursor *self, PyObject *data);
uint8_t
mariadb_check_execute_parameters(MrdbCursor *self, PyObject *data);
uint8_t
mariadb_param_update(void *data, MYSQL_BIND *bind, uint32_t row_nr);
/* parser prototypes */
MrdbParser *
MrdbParser_init(MYSQL *mysql, const char *statement, size_t length);
void
MrdbParser_end(MrdbParser *p);
uint8_t
MrdbParser_parse(MrdbParser *p, uint8_t is_batch, char *errmsg, size_t errmsg_len);
/* Global defines */
#define MARIADB_PY_APILEVEL "2.0"
#define MARIADB_PY_PARAMSTYLE "qmark"
#define MARIADB_PY_THREADSAFETY 1
#define MAX_POOL_SIZE 64
#define TIMEDIFF(a,b)\
((a).tv_sec * (uint64_t)1E09 + (a).tv_nsec) -\
((b).tv_sec * (uint64_t)1E09 + (b).tv_nsec)
/* Helper macros */
/* Due to callback functions we cannot use PY_BEGIN/END_ALLOW_THREADS */
#define MARIADB_BEGIN_ALLOW_THREADS(obj) (obj)->thread_state= PyEval_SaveThread();
#define MARIADB_END_ALLOW_THREADS(obj)\
if ((obj)->thread_state)\
{\
PyEval_RestoreThread((obj)->thread_state);\
(obj)->thread_state= NULL;\
}
#define MARIADB_UNBLOCK_THREADS(obj)\
{\
PyThreadState *_save= NULL;\
if ((obj)->thread_state)\
{\
_save= (obj)->thread_state;\
PyEval_RestoreThread(_save);\
(obj)->thread_state= NULL;\
}
#define MARIADB_BLOCK_THREADS(obj)\
if (_save)\
{\
(obj)->thread_state= PyEval_SaveThread();\
_save= NULL;\
}\
}
#define MrdbIndicator_Check(a)\
(Py_TYPE((a)) == &MrdbIndicator_Type)
#define MARIADB_CHECK_CONNECTION(connection, ret)\
if (!(connection) || !(connection)->mysql)\
{\
mariadb_throw_exception(NULL, Mariadb_ProgrammingError, 0, \
"Invalid connection or not connected");\
return (ret);\
}
#define MARIADB_CHECK_TPC(connection)\
if (connection->tpc_state == TPC_STATE_NONE)\
{\
mariadb_throw_exception(connection->mysql, Mariadb_ProgrammingError, 0,\
"Transaction not started");\
return NULL;\
}
#define MARIADB_FREE_MEM(a)\
if (a)\
{\
PyMem_RawFree((a));\
(a)= NULL;\
}
#define MARIADB_CHECK_STMT(cursor, retval)\
if (!(cursor)->connection->mysql || (cursor)->closed)\
{\
(cursor)->closed= 1;\
mariadb_throw_exception((cursor)->stmt, Mariadb_ProgrammingError, 1,\
"Invalid cursor or not connected");\
return (retval);\
}
#define pooling_keywords "pool_name", "pool_size", "reset_session", "idle_timeout", "acquire_timeout"
#define connection_keywords "dsn", "host", "user", "password", "database", "port", "socket",\
"connect_timeout", "read_timeout", "write_timeout",\
"local_infile", "compress", "init_command",\
"default_file", "default_group",\
"ssl_key", "ssl_ca", "ssl_cert", "ssl_crl",\
"ssl_cipher", "ssl_capath", "ssl_crlpath",\
"ssl_verify_cert", "ssl",\
"client_flags", "charset"
/* MariaDB protocol macros */
#define int1store(T,A) *((int8_t*) (T)) = (A)
#define uint1korr(A) (*(((uint8_t*)(A))))
#if defined(__i386__) || defined(_WIN32)
#define sint2korr(A) (*((int16_t *) (A)))
#define sint3korr(A) ((int32_t) ((((unsigned char) (A)[2]) & 128) ? \
(((uint32_t) 255L << 24) | \
(((uint32_t) (unsigned char) (A)[2]) << 16) |\
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])) : \
(((uint32_t) (unsigned char) (A)[2]) << 16) |\
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])))
#define sint4korr(A) (*((long *) (A)))
#define uint2korr(A) (*((uint16_t *) (A)))
#if defined(HAVE_purify) && !defined(_WIN32)
#define uint3korr(A) (uint32_t) (((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16))
#else
/*
ATTENTION !
Please, note, uint3korr reads 4 bytes (not 3) !
It means, that you have to provide enough allocated space !
*/
#define uint3korr(A) (long) (*((unsigned int *) (A)) & 0xFFFFFF)
#endif /* HAVE_purify && !_WIN32 */
#define uint4korr(A) (*((uint32_t *) (A)))
#define uint5korr(A) ((unsigned long long)(((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16) +\
(((uint32_t) ((unsigned char) (A)[3])) << 24)) +\
(((unsigned long long) ((unsigned char) (A)[4])) << 32))
#define uint6korr(A) ((unsigned long long)(((uint32_t) ((unsigned char) (A)[0])) + \
(((uint32_t) ((unsigned char) (A)[1])) << 8) + \
(((uint32_t) ((unsigned char) (A)[2])) << 16) + \
(((uint32_t) ((unsigned char) (A)[3])) << 24)) + \
(((unsigned long long) ((unsigned char) (A)[4])) << 32) + \
(((unsigned long long) ((unsigned char) (A)[5])) << 40))
#define uint8_tkorr(A) (*((unsigned long long *) (A)))
#define sint8korr(A) (*((long long *) (A)))
#define int2store(T,A) *((uint16_t*) (T))= (uint16_t) (A)
#define int3store(T,A) do { *(T)= (unsigned char) ((A));\
*(T+1)=(unsigned char) (((uint) (A) >> 8));\
*(T+2)=(unsigned char) (((A) >> 16)); } while (0)
#define int4store(T,A) *((long *) (T))= (long) (A)
#define int5store(T,A) do { *(T)= (unsigned char)((A));\
*((T)+1)=(unsigned char) (((A) >> 8));\
*((T)+2)=(unsigned char) (((A) >> 16));\
*((T)+3)=(unsigned char) (((A) >> 24)); \
*((T)+4)=(unsigned char) (((A) >> 32)); } while(0)
#define int6store(T,A) do { *(T)= (unsigned char)((A)); \
*((T)+1)=(unsigned char) (((A) >> 8)); \
*((T)+2)=(unsigned char) (((A) >> 16)); \
*((T)+3)=(unsigned char) (((A) >> 24)); \
*((T)+4)=(unsigned char) (((A) >> 32)); \
*((T)+5)=(unsigned char) (((A) >> 40)); } while(0)
#define int8store(T,A) *((unsigned long long *) (T))= (unsigned long long) (A)
typedef union {
double v;
long m[2];
} doubleget_union;
#define doubleget(V,M) \
do { doubleget_union _tmp; \
_tmp.m[0] = *((long*)(M)); \
_tmp.m[1] = *(((long*) (M))+1); \
(V) = _tmp.v; } while(0)
#define doublestore(T,V) do { *((long *) T) = ((doubleget_union *)&V)->m[0]; \
*(((long *) T)+1) = ((doubleget_union *)&V)->m[1]; \
} while (0)
#define float4get(V,M) do { *((float *) &(V)) = *((float*) (M)); } while(0)
#define float8get(V,M) doubleget((V),(M))
#define float4store(V,M) memcpy((unsigned char*) V,(unsigned char*) (&M),sizeof(float))
#define floatstore(T,V) memcpy((unsigned char*)(T), (unsigned char*)(&V),sizeof(float))
#define floatget(V,M) memcpy((unsigned char*) &V,(unsigned char*) (M),sizeof(float))
#define float8store(V,M) doublestore((V),(M))
#else
/*
We're here if it's not a IA-32 architecture (Win32 and UNIX IA-32 defines
were done before)
*/
#define sint2korr(A) (int16_t) (((int16_t) ((unsigned char) (A)[0])) +\
((int16_t) ((int16_t) (A)[1]) << 8))
#define sint3korr(A) ((int32_t) ((((unsigned char) (A)[2]) & 128) ? \
(((uint32_t) 255L << 24) | \
(((uint32_t) (unsigned char) (A)[2]) << 16) |\
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])) : \
(((uint32_t) (unsigned char) (A)[2]) << 16) |\
(((uint32_t) (unsigned char) (A)[1]) << 8) | \
((uint32_t) (unsigned char) (A)[0])))
#define sint4korr(A) (int32_t) (((int32_t) ((unsigned char) (A)[0])) +\
(((int32_t) ((unsigned char) (A)[1]) << 8)) +\
(((int32_t) ((unsigned char) (A)[2]) << 16)) +\
(((int32_t) ((int16_t) (A)[3]) << 24)))
#define sint8korr(A) (long long) uint8korr(A)
#define uint2korr(A) (uint16_t) (((uint16_t) ((unsigned char) (A)[0])) +\
((uint16_t) ((unsigned char) (A)[1]) << 8))
#define uint3korr(A) (uint32_t) (((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16))
#define uint4korr(A) (uint32_t) (((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16) +\
(((uint32_t) ((unsigned char) (A)[3])) << 24))
#define uint5korr(A) ((unsigned long long)(((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16) +\
(((uint32_t) ((unsigned char) (A)[3])) << 24)) +\
(((unsigned long long) ((unsigned char) (A)[4])) << 32))
#define uint6korr(A) ((unsigned long long)(((uint32_t) ((unsigned char) (A)[0])) + \
(((uint32_t) ((unsigned char) (A)[1])) << 8) + \
(((uint32_t) ((unsigned char) (A)[2])) << 16) + \
(((uint32_t) ((unsigned char) (A)[3])) << 24)) + \
(((unsigned long long) ((unsigned char) (A)[4])) << 32) + \
(((unsigned long long) ((unsigned char) (A)[5])) << 40))
#define uint8korr(A) ((unsigned long long)(((uint32_t) ((unsigned char) (A)[0])) +\
(((uint32_t) ((unsigned char) (A)[1])) << 8) +\
(((uint32_t) ((unsigned char) (A)[2])) << 16) +\
(((uint32_t) ((unsigned char) (A)[3])) << 24)) +\
(((unsigned long long) (((uint32_t) ((unsigned char) (A)[4])) +\
(((uint32_t) ((unsigned char) (A)[5])) << 8) +\
(((uint32_t) ((unsigned char) (A)[6])) << 16) +\
(((uint32_t) ((unsigned char) (A)[7])) << 24))) <<\
32))
#define int2store(T,A) do { uint def_temp= (uint) (A) ;\
*((unsigned char*) (T))= (unsigned char)(def_temp); \
*((unsigned char*) (T)+1)=(unsigned char)((def_temp >> 8)); \
} while(0)
#define int3store(T,A) do { /*lint -save -e734 */\
*((unsigned char*)(T))=(unsigned char) ((A));\
*((unsigned char*) (T)+1)=(unsigned char) (((A) >> 8));\
*((unsigned char*)(T)+2)=(unsigned char) (((A) >> 16)); \
/*lint -restore */} while(0)
#define int4store(T,A) do { *((char *)(T))=(char) ((A));\
*(((char *)(T))+1)=(char) (((A) >> 8));\
*(((char *)(T))+2)=(char) (((A) >> 16));\
*(((char *)(T))+3)=(char) (((A) >> 24)); } while(0)
#define int5store(T,A) do { *((char *)(T))= (char)((A)); \
*(((char *)(T))+1)= (char)(((A) >> 8)); \
*(((char *)(T))+2)= (char)(((A) >> 16)); \
*(((char *)(T))+3)= (char)(((A) >> 24)); \
*(((char *)(T))+4)= (char)(((A) >> 32)); \
} while(0)
#define int6store(T,A) do { *((char *)(T))= (char)((A)); \
*(((char *)(T))+1)= (char)(((A) >> 8)); \
*(((char *)(T))+2)= (char)(((A) >> 16)); \
*(((char *)(T))+3)= (char)(((A) >> 24)); \
*(((char *)(T))+4)= (char)(((A) >> 32)); \
*(((char *)(T))+5)= (char)(((A) >> 40)); \
} while(0)
#define int8store(T,A) do { uint def_temp= (uint) (A), def_temp2= (uint) ((A) >> 32); \
int4store((T),def_temp); \
int4store((T+4),def_temp2); } while(0)
#ifdef WORDS_BIGENDIAN
#define float4store(T,A) do { *(T)= ((unsigned char *) &A)[3];\
*((T)+1)=(char) ((unsigned char *) &A)[2];\
*((T)+2)=(char) ((unsigned char *) &A)[1];\
*((T)+3)=(char) ((unsigned char *) &A)[0]; } while(0)
#define float4get(V,M) do { float def_temp;\
((unsigned char*) &def_temp)[0]=(M)[3];\
((unsigned char*) &def_temp)[1]=(M)[2];\
((unsigned char*) &def_temp)[2]=(M)[1];\
((unsigned char*) &def_temp)[3]=(M)[0];\
(V)=def_temp; } while(0)
#define float8store(T,V) do { *(T)= ((unsigned char *) &V)[7];\
*((T)+1)=(char) ((unsigned char *) &V)[6];\
*((T)+2)=(char) ((unsigned char *) &V)[5];\
*((T)+3)=(char) ((unsigned char *) &V)[4];\
*((T)+4)=(char) ((unsigned char *) &V)[3];\
*((T)+5)=(char) ((unsigned char *) &V)[2];\
*((T)+6)=(char) ((unsigned char *) &V)[1];\
*((T)+7)=(char) ((unsigned char *) &V)[0]; } while(0)
#define float8get(V,M) do { double def_temp;\
((unsigned char*) &def_temp)[0]=(M)[7];\
((unsigned char*) &def_temp)[1]=(M)[6];\
((unsigned char*) &def_temp)[2]=(M)[5];\
((unsigned char*) &def_temp)[3]=(M)[4];\
((unsigned char*) &def_temp)[4]=(M)[3];\
((unsigned char*) &def_temp)[5]=(M)[2];\
((unsigned char*) &def_temp)[6]=(M)[1];\
((unsigned char*) &def_temp)[7]=(M)[0];\
(V) = def_temp; } while(0)
#else
#define float4get(V,M) memcpy(&V, (M), sizeof(float))
#define float4store(V,M) memcpy(V, (&M), sizeof(float))
#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
#define doublestore(T,V) do { *(((char*)T)+0)=(char) ((unsigned char *) &V)[4];\
*(((char*)T)+1)=(char) ((unsigned char *) &V)[5];\
*(((char*)T)+2)=(char) ((unsigned char *) &V)[6];\
*(((char*)T)+3)=(char) ((unsigned char *) &V)[7];\
*(((char*)T)+4)=(char) ((unsigned char *) &V)[0];\
*(((char*)T)+5)=(char) ((unsigned char *) &V)[1];\
*(((char*)T)+6)=(char) ((unsigned char *) &V)[2];\
*(((char*)T)+7)=(char) ((unsigned char *) &V)[3]; }\
while(0)
#define doubleget(V,M) do { double def_temp;\
((unsigned char*) &def_temp)[0]=(M)[4];\
((unsigned char*) &def_temp)[1]=(M)[5];\
((unsigned char*) &def_temp)[2]=(M)[6];\
((unsigned char*) &def_temp)[3]=(M)[7];\
((unsigned char*) &def_temp)[4]=(M)[0];\
((unsigned char*) &def_temp)[5]=(M)[1];\
((unsigned char*) &def_temp)[6]=(M)[2];\
((unsigned char*) &def_temp)[7]=(M)[3];\
(V) = def_temp; } while(0)
#endif /* __FLOAT_WORD_ORDER */
#define float8get(V,M) doubleget((V),(M))
#define float8store(V,M) doublestore((V),(M))
#endif /* WORDS_BIGENDIAN */
#ifdef HAVE_BIGENDIAN
#define ushortget(V,M) do { V = (uint16_t) (((uint16_t) ((unsigned char) (M)[1]))+\
((uint16_t) ((uint16_t) (M)[0]) << 8)); } while(0)
#define shortget(V,M) do { V = (short) (((short) ((unsigned char) (M)[1]))+\
((short) ((short) (M)[0]) << 8)); } while(0)
#define longget(V,M) do { int32 def_temp;\
((unsigned char*) &def_temp)[0]=(M)[0];\
((unsigned char*) &def_temp)[1]=(M)[1];\
((unsigned char*) &def_temp)[2]=(M)[2];\
((unsigned char*) &def_temp)[3]=(M)[3];\
(V)=def_temp; } while(0)
#define ulongget(V,M) do { uint32 def_temp;\
((unsigned char*) &def_temp)[0]=(M)[0];\
((unsigned char*) &def_temp)[1]=(M)[1];\
((unsigned char*) &def_temp)[2]=(M)[2];\
((unsigned char*) &def_temp)[3]=(M)[3];\
(V)=def_temp; } while(0)
#define shortstore(T,A) do { uint def_temp=(uint) (A) ;\
*(((char*)T)+1)=(char)(def_temp); \
*(((char*)T)+0)=(char)(def_temp >> 8); } while(0)
#define longstore(T,A) do { *(((char*)T)+3)=((A));\
*(((char*)T)+2)=(((A) >> 8));\
*(((char*)T)+1)=(((A) >> 16));\
*(((char*)T)+0)=(((A) >> 24)); } while(0)
#define floatget(V,M) memcpy(&V, (M), sizeof(float))
#define floatstore(T,V) memcpy((T), (void*) (&V), sizeof(float))
#define doubleget(V,M) memcpy(&V, (M), sizeof(double))
#define doublestore(T,V) memcpy((T), (void *) &V, sizeof(double))
#define longlongget(V,M) memcpy(&V, (M), sizeof(unsigned long long))
#define longlongstore(T,V) memcpy((T), &V, sizeof(unsigned long long))
#else
#define ushortget(V,M) do { V = uint2korr(M); } while(0)
#define shortget(V,M) do { V = sint2korr(M); } while(0)
#define longget(V,M) do { V = sint4korr(M); } while(0)
#define ulongget(V,M) do { V = uint4korr(M); } while(0)
#define shortstore(T,V) int2store(T,V)
#define longstore(T,V) int4store(T,V)
#ifndef floatstore
#define floatstore(T,V) memcpy((T), (void *) (&V), sizeof(float))
#define floatget(V,M) memcpy(&V, (M), sizeof(float))
#endif
#ifndef doubleget
#define doubleget(V,M) memcpy(&V, (M), sizeof(double))
#define doublestore(T,V) memcpy((T), (void *) &V, sizeof(double))
#endif /* doubleget */
#define longlongget(V,M) memcpy(&V, (M), sizeof(unsigned long long))
#define longlongstore(T,V) memcpy((T), &V, sizeof(unsigned long long))
#endif /* WORDS_BIGENDIAN */
#endif /* __i386__ OR _WIN32 */
#ifdef _WIN32
//#define alloca _malloca
#endif