src/mapi/u_current.h

   1 #ifndef _U_CURRENT_H_
   2 #define _U_CURRENT_H_
   3
   4 #if defined(MAPI_MODE_UTIL) || defined(MAPI_MODE_GLAPI) || \
   5     defined(MAPI_MODE_BRIDGE)
   6
   7 #include "glapi/glapi.h"
   8
   9 /* ugly renames to match glapi.h */
  10 #define mapi_table _glapi_table
  11
  12 #ifdef GLX_USE_TLS
  13 #define u_current_table _glapi_tls_Dispatch
  14 #define u_current_user _glapi_tls_Context
  15 #else
  16 #define u_current_table _glapi_Dispatch
  17 #define u_current_user _glapi_Context
  18 #endif
  19
  20 #define u_current_get_internal _glapi_get_dispatch
  21 #define u_current_get_user_internal _glapi_get_context
  22
  23 #define u_current_table_tsd _gl_DispatchTSD
  24
  25 #else /* MAPI_MODE_UTIL || MAPI_MODE_GLAPI || MAPI_MODE_BRIDGE */
  26
  27 #include "u_compiler.h"
  28
  29 struct mapi_table;
  30
  31 #ifdef GLX_USE_TLS
  32
  33 extern __thread struct mapi_table *u_current_table
  34     __attribute__((tls_model("initial-exec")));
  35
  36 extern __thread void *u_current_user
  37     __attribute__((tls_model("initial-exec")));
  38
  39 #else /* GLX_USE_TLS */
  40
  41 extern struct mapi_table *u_current_table;
  42 extern void *u_current_user;
  43
  44 #endif /* GLX_USE_TLS */
  45
  46 #endif /* MAPI_MODE_UTIL || MAPI_MODE_GLAPI || MAPI_MODE_BRIDGE */
  47
  48 void
  49 u_current_init(void);
  50
  51 void
  52 u_current_destroy(void);
  53
  54 void
  55 u_current_set(const struct mapi_table *tbl);
  56
  57 struct mapi_table *
  58 u_current_get_internal(void);
  59
  60 void
  61 u_current_set_user(const void *ptr);
  62
  63 void *
  64 u_current_get_user_internal(void);
  65
  66 static INLINE const struct mapi_table *
  67 u_current_get(void)
  68 {
  69 #ifdef GLX_USE_TLS
  70    return u_current_table;
  71 #else
  72    return (likely(u_current_table) ?
  73          u_current_table : u_current_get_internal());
  74 #endif
  75 }
  76
  77 static INLINE const void *
  78 u_current_get_user(void)
  79 {
  80 #ifdef GLX_USE_TLS
  81    return u_current_user;
  82 #else
  83    return likely(u_current_user) ? u_current_user : u_current_get_user_internal();
  84 #endif
  85 }
  86
  87 #endif /* _U_CURRENT_H_ */