src/mapi/mapi/u_current.h

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