cleaned up the share data types and prototypes to be more in line what

 * Setup defines, protos etc for the sharing stuff.

 */

/* Different types of locks that a share can aquire */

/* Different data locks for a single share */

typedef enum {

  CURL_LOCK_TYPE_NONE = 0,

  CURL_LOCK_TYPE_COOKIE = 1<<0,

  CURL_LOCK_TYPE_DNS = 1<<1,

  CURL_LOCK_TYPE_SSL_SESSION = 2<<1,

  CURL_LOCK_TYPE_CONNECT = 2<<2,

  CURL_LOCK_TYPE_LAST

} curl_lock_type;

  CURL_LOCK_DATA_NONE = 0,

  CURL_LOCK_DATA_COOKIE = 1,

  CURL_LOCK_DATA_DNS = 2,

  CURL_LOCK_DATA_SSL_SESSION = 3,

  CURL_LOCK_DATA_CONNECT = 4,

  CURL_LOCK_DATA_LAST

} curl_lock_data;

/* Different lock access types */

typedef enum {

  CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */

  CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */

  CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */

  CURL_LOCK_ACCESS_LAST        /* never use */

} curl_lock_access;

typedef void (*curl_lock_function)(CURL *handle,

                                   curl_lock_data data,

                                   curl_lock_access access,

                                   void *userptr);

typedef void (*curl_unlock_function)(CURL *handle,

                                     curl_lock_data data,

                                     void *userptr);

typedef void CURLSH;

typedef void (*curl_lock_function)(CURL *, curl_lock_type, void *);

typedef void (*curl_unlock_function)(CURL *, curl_lock_type, void *);

typedef enum {

  CURLSH_OK,  /* all is fine */

  CURLSH_BAD_OPTION, /* 1 */

  CURLSH_LAST /* never use */

} CURLSHcode;

typedef struct {

  unsigned int specifier;

  unsigned int locked;

  unsigned int dirty;

  curl_lock_function lockfunc;

  curl_unlock_function unlockfunc;

  void *clientdata;

} curl_share;

curl_share *curl_share_init (void);

CURLcode curl_share_setopt (curl_share *, curl_lock_type, int);

CURLcode curl_share_set_lock_function (curl_share *, curl_lock_function);

CURLcode curl_share_set_unlock_function (curl_share *, curl_unlock_function);

CURLcode curl_share_set_lock_data (curl_share *, void *);

CURLcode curl_share_destroy (curl_share *);

typedef enum {

  CURLSHOPT_NONE,  /* don't use */

  CURLSHOPT_SHARE,   /* specify a data type to share */

  CURLSHOPT_UNSHARE, /* specify shich data type to stop sharing */

  CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */

  CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */

  CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock

                           callback functions */

  CURLSHOPT_LAST  /* never use */

} CURLSHoption;

CURLSH *curl_share_init(void);

CURLSHcode curl_share_setopt(CURLSH *, CURLSHoption option, ...);

CURLSHcode curl_share_cleanup(CURLSH *);

/****************************************************************************

 * Structures for querying information about the curl library at runtime.