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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009 VMware, Inc.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16.  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17.  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18.  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19.  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20.  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21.  *
  22.  * The above copyright notice and this permission notice (including the
  23.  * next paragraph) shall be included in all copies or substantial portions
  24.  * of the Software.
  25.  *
  26.  **************************************************************************/
  27.  
  28.  
  29. #ifndef U_DL_H_
  30. #define U_DL_H_
  31.  
  32.  
  33. #include "pipe/p_config.h"
  34.  
  35.  
  36. #if defined(PIPE_OS_WINDOWS)
  37. #  define UTIL_DL_EXT ".dll"
  38. #  define UTIL_DL_PREFIX ""
  39. #elif defined(PIPE_OS_APPLE)
  40. #  define UTIL_DL_EXT ".dylib"
  41. #  define UTIL_DL_PREFIX "lib"
  42. #else
  43. #  define UTIL_DL_EXT ".so"
  44. #  define UTIL_DL_PREFIX "lib"
  45. #endif
  46.  
  47.  
  48. struct util_dl_library;
  49.  
  50.  
  51. typedef void (*util_dl_proc)(void);
  52.  
  53.  
  54. /**
  55.  * Open a library dynamically.
  56.  */
  57. struct util_dl_library *
  58. util_dl_open(const char *filename);
  59.  
  60.  
  61. /**
  62.  * Lookup a function in a library.
  63.  */
  64. util_dl_proc
  65. util_dl_get_proc_address(struct util_dl_library *library,
  66.                          const char *procname);
  67.  
  68.  
  69. /**
  70.  * Close a library.
  71.  */
  72. void
  73. util_dl_close(struct util_dl_library *library);
  74.  
  75.  
  76. /**
  77.  * Return most recent error message.
  78.  */
  79. const char *
  80. util_dl_error(void);
  81.  
  82.  
  83. #endif /* U_DL_H_ */
  84.