apr_dso.h

Apache V2.0.15 Alpha For Linuxhttpd-2_0_15-alpha.tar.Z

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#ifndef APR_DSO_DOT_H
#define APR_DSO_DOT_H

#include "apr.h"
#include "apr_pools.h"
#include "apr_errno.h"

/**
 * @package Dynamic Object Handling
 */

#ifdef __cplusplus
extern "C" {
#endif

#if APR_HAS_DSO

/**
 * Structure for referencing dynamic objects
 * @defvar apr_dso_handle_t
 */
typedef struct apr_dso_handle_t       apr_dso_handle_t;

/**
 * Structure for referencing symbols from dynamic objects
 * @defvar apr_dso_handle_sym_t
 */
typedef void *                        apr_dso_handle_sym_t;

/**
 * Load a DSO library.
 * @param res_handle Location to store new handle for the DSO.
 * @param path Path to the DSO library
 * @param ctx Pool to use.
 * @deffunc apr_status_t apr_dso_load(apr_dso_handle_t **res_handle, const char *path, apr_pool_t *ctx)
 */
APR_DECLARE(apr_status_t) apr_dso_load(apr_dso_handle_t **res_handle, 
                                       const char *path, apr_pool_t *ctx);

/**
 * Close a DSO library.
 * @param handle handle to close.
 * @deffunc apr_status_t apr_dso_unload(apr_dso_handle_t *handle)
 */
APR_DECLARE(apr_status_t) apr_dso_unload(apr_dso_handle_t *handle);

/**
 * Load a symbol from a DSO handle.
 * @param ressym Location to store the loaded symbol
 * @param handle handle to load the symbol from.
 * @param symname Name of the symbol to load.
 * @deffunc apr_status_t apr_dso_sym(apr_dso_handle_sym_t *ressym, apr_dso_handle_t *handle, const char *symname)
 */
APR_DECLARE(apr_status_t) apr_dso_sym(apr_dso_handle_sym_t *ressym, 
                                      apr_dso_handle_t *handle,
                                      const char *symname);

/**
 * Report more information when a DSO function fails.
 * @param dso The dso handle that has been opened
 * @param buf Location to store the dso error
 * @param bufsize The size of the provided buffer
 * @deffunc const char *apr_dso_error(apr_dso_handle_t *dso, char *buf, apr_size_t bufsize)
 */
APR_DECLARE(const char *) apr_dso_error(apr_dso_handle_t *dso, char *buf, apr_size_t bufsize);

#endif /* APR_HAS_DSO */

#ifdef __cplusplus
}
#endif

#endif