vxodbc/environ.h

   1 /*
   2  *
   3  * Description:         See "environ.c"
   4  *
   5  * Comments:            See "notice.txt" for copyright and license information.
   6  *
   7  */
   8
   9 #ifndef __ENVIRON_H__
  10 #define __ENVIRON_H__
  11
  12 #ifdef  __cplusplus
  13 extern "C" {
  14 #endif
  15
  16 #include "psqlodbc.h"
  17
  18 #if defined (POSIX_MULTITHREAD_SUPPORT)
  19 #include <pthread.h>
  20 #endif
  21
  22 #define ENV_ALLOC_ERROR 1
  23
  24 /**********             Environment Handle      *************/
  25 struct EnvironmentClass_
  26 {
  27         char       *errormsg;
  28         int             errornumber;
  29         Int4    flag;
  30 #if defined(WIN_MULTITHREAD_SUPPORT)
  31         CRITICAL_SECTION        cs;
  32 #elif defined(POSIX_MULTITHREAD_SUPPORT)
  33         pthread_mutex_t         cs;
  34 #endif /* WIN_MULTITHREAD_SUPPORT */
  35 };
  36
  37 /*      Environment prototypes */
  38 EnvironmentClass *EN_Constructor(void);
  39 char            EN_Destructor(EnvironmentClass *self);
  40 char            EN_get_error(EnvironmentClass *self, int *number, char **message);
  41 char            EN_add_connection(EnvironmentClass *self, ConnectionClass *conn);
  42 char            EN_remove_connection(EnvironmentClass *self, ConnectionClass *conn);
  43 void            EN_log_error(const char *func, char *desc, EnvironmentClass *self);
  44
  45 #define EN_OV_ODBC2     1L
  46 #define EN_CONN_POOLING (1L<<1)
  47 #define EN_is_odbc2(env) ((env->flag & EN_OV_ODBC2) != 0)
  48 #define EN_is_odbc3(env) (env && (env->flag & EN_OV_ODBC2) == 0)
  49 #define EN_set_odbc2(env) (env->flag |= EN_OV_ODBC2)
  50 #define EN_set_odbc3(env) (env->flag &= ~EN_OV_ODBC2)
  51 #define EN_is_pooling(env) (env && (env->flag & EN_CONN_POOLING) != 0)
  52 #define EN_set_pooling(env) (env->flag |= EN_CONN_POOLING)
  53 #define EN_unset_pooling(env) (env->flag &= ~EN_CONN_POOLING)
  54
  55 /* For Multi-thread */
  56 #if defined( WIN_MULTITHREAD_SUPPORT)
  57 #define INIT_CONNS_CS   InitializeCriticalSection(&conns_cs)
  58 #define ENTER_CONNS_CS  EnterCriticalSection(&conns_cs)
  59 #define LEAVE_CONNS_CS  LeaveCriticalSection(&conns_cs)
  60 #define DELETE_CONNS_CS DeleteCriticalSection(&conns_cs)
  61 #define INIT_ENV_CS(x)          InitializeCriticalSection(&((x)->cs))
  62 #define ENTER_ENV_CS(x) EnterCriticalSection(&((x)->cs))
  63 #define LEAVE_ENV_CS(x)         LeaveCriticalSection(&((x)->cs))
  64 #define DELETE_ENV_CS(x)        DeleteCriticalSection(&((x)->cs))
  65 #define INIT_COMMON_CS          InitializeCriticalSection(&common_cs)
  66 #define ENTER_COMMON_CS         EnterCriticalSection(&common_cs)
  67 #define LEAVE_COMMON_CS         LeaveCriticalSection(&common_cs)
  68 #define DELETE_COMMON_CS        DeleteCriticalSection(&common_cs)
  69 #elif defined(POSIX_MULTITHREAD_SUPPORT)
  70 #define INIT_CONNS_CS   pthread_mutex_init(&conns_cs,0)
  71 #define ENTER_CONNS_CS  pthread_mutex_lock(&conns_cs)
  72 #define LEAVE_CONNS_CS  pthread_mutex_unlock(&conns_cs)
  73 #define DELETE_CONNS_CS pthread_mutex_destroy(&conns_cs)
  74 #define INIT_ENV_CS(x)          pthread_mutex_init(&((x)->cs),0)
  75 #define ENTER_ENV_CS(x)         pthread_mutex_lock(&((x)->cs))
  76 #define LEAVE_ENV_CS(x)         pthread_mutex_unlock(&((x)->cs))
  77 #define DELETE_ENV_CS(x)        pthread_mutex_destroy(&((x)->cs))
  78 #define INIT_COMMON_CS          pthread_mutex_init(&common_cs,0)
  79 #define ENTER_COMMON_CS         pthread_mutex_lock(&common_cs)
  80 #define LEAVE_COMMON_CS         pthread_mutex_unlock(&common_cs)
  81 #define DELETE_COMMON_CS        pthread_mutex_destroy(&common_cs)
  82 #else
  83 #define INIT_CONNS_CS
  84 #define ENTER_CONNS_CS
  85 #define LEAVE_CONNS_CS
  86 #define DELETE_CONNS_CS
  87 #define INIT_ENV_CS(x)
  88 #define ENTER_ENV_CS(x)
  89 #define LEAVE_ENV_CS(x)
  90 #define DELETE_ENV_CS(x)
  91 #define INIT_COMMON_CS
  92 #define ENTER_COMMON_CS
  93 #define LEAVE_COMMON_CS
  94 #define DELETE_COMMON_CS
  95 #endif /* WIN_MULTITHREAD_SUPPORT */
  96
  97 #ifdef  __cplusplus
  98 }
  99 #endif
 100 #endif /* __ENVIRON_H_ */