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environ.h
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environ.h
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/*
*
* Description: See "environ.c"
*
* Comments: See "readme.txt" for copyright and license information.
*
*/
#ifndef __ENVIRON_H__
#define __ENVIRON_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "psqlodbc.h"
#if defined (POSIX_MULTITHREAD_SUPPORT)
#include <pthread.h>
#endif
#define ENV_ALLOC_ERROR 1
/********** Environment Handle *************/
struct EnvironmentClass_
{
char *errormsg;
int errornumber;
Int4 flag;
#if defined(WIN_MULTITHREAD_SUPPORT)
CRITICAL_SECTION cs;
#elif defined(POSIX_MULTITHREAD_SUPPORT)
pthread_mutex_t cs;
#endif /* WIN_MULTITHREAD_SUPPORT */
};
/* Environment prototypes */
EnvironmentClass *EN_Constructor(void);
char EN_Destructor(EnvironmentClass *self);
char EN_get_error(EnvironmentClass *self, int *number, char **message);
char EN_add_connection(EnvironmentClass *self, ConnectionClass *conn);
char EN_remove_connection(EnvironmentClass *self, ConnectionClass *conn);
void EN_log_error(const char *func, char *desc, EnvironmentClass *self);
int getConnCount(void);
ConnectionClass * const *getConnList(void);
#define EN_OV_ODBC2 1L
#define EN_CONN_POOLING (1L<<1)
#define EN_is_odbc2(env) (((env)->flag & EN_OV_ODBC2) != 0)
#define EN_is_odbc3(env) ((env) && ((env)->flag & EN_OV_ODBC2) == 0)
#define EN_set_odbc2(env) ((env)->flag |= EN_OV_ODBC2)
#define EN_set_odbc3(env) ((env)->flag &= ~EN_OV_ODBC2)
#define EN_is_pooling(env) ((env) && ((env)->flag & EN_CONN_POOLING) != 0)
#define EN_set_pooling(env) ((env)->flag |= EN_CONN_POOLING)
#define EN_unset_pooling(env) ((env)->flag &= ~EN_CONN_POOLING)
/* For Multi-thread */
#if defined( WIN_MULTITHREAD_SUPPORT)
#define INIT_CONNS_CS InitializeCriticalSection(&conns_cs)
#define ENTER_CONNS_CS EnterCriticalSection(&conns_cs)
#define LEAVE_CONNS_CS LeaveCriticalSection(&conns_cs)
#define DELETE_CONNS_CS DeleteCriticalSection(&conns_cs)
#define INIT_ENV_CS(x) InitializeCriticalSection(&((x)->cs))
#define ENTER_ENV_CS(x) EnterCriticalSection(&((x)->cs))
#define LEAVE_ENV_CS(x) LeaveCriticalSection(&((x)->cs))
#define DELETE_ENV_CS(x) DeleteCriticalSection(&((x)->cs))
#define INIT_COMMON_CS InitializeCriticalSection(&common_cs)
#define ENTER_COMMON_CS EnterCriticalSection(&common_cs)
#define LEAVE_COMMON_CS LeaveCriticalSection(&common_cs)
#define DELETE_COMMON_CS DeleteCriticalSection(&common_cs)
#elif defined(POSIX_MULTITHREAD_SUPPORT)
#define INIT_CONNS_CS pthread_mutex_init(&conns_cs,0)
#define ENTER_CONNS_CS pthread_mutex_lock(&conns_cs)
#define LEAVE_CONNS_CS pthread_mutex_unlock(&conns_cs)
#define DELETE_CONNS_CS pthread_mutex_destroy(&conns_cs)
#define INIT_ENV_CS(x) pthread_mutex_init(&((x)->cs),0)
#define ENTER_ENV_CS(x) pthread_mutex_lock(&((x)->cs))
#define LEAVE_ENV_CS(x) pthread_mutex_unlock(&((x)->cs))
#define DELETE_ENV_CS(x) pthread_mutex_destroy(&((x)->cs))
#define INIT_COMMON_CS pthread_mutex_init(&common_cs,0)
#define ENTER_COMMON_CS pthread_mutex_lock(&common_cs)
#define LEAVE_COMMON_CS pthread_mutex_unlock(&common_cs)
#define DELETE_COMMON_CS pthread_mutex_destroy(&common_cs)
#else
#define INIT_CONNS_CS
#define ENTER_CONNS_CS
#define LEAVE_CONNS_CS
#define DELETE_CONNS_CS
#define INIT_ENV_CS(x)
#define ENTER_ENV_CS(x)
#define LEAVE_ENV_CS(x)
#define DELETE_ENV_CS(x)
#define INIT_COMMON_CS
#define ENTER_COMMON_CS
#define LEAVE_COMMON_CS
#define DELETE_COMMON_CS
#endif /* WIN_MULTITHREAD_SUPPORT */
void shortterm_common_lock(void);
void shortterm_common_unlock(void);
#ifdef __cplusplus
}
#endif
#endif /* __ENVIRON_H_ */