src/mapi/u_current.h

   1 #ifndef _U_CURRENT_H_
   2 #define _U_CURRENT_H_
   3
   4 #include "c99_compat.h"
   5 #include "util/macros.h"
   6
   7
   8 #if defined(MAPI_MODE_UTIL) || defined(MAPI_MODE_GLAPI) || \
   9     defined(MAPI_MODE_BRIDGE)
  10
  11 #include "glapi/glapi.h"
  12
  13 /* ugly renames to match glapi.h */
  14 #define mapi_table _glapi_table
  15
  16 #ifdef GLX_USE_TLS
  17 #define u_current_table _glapi_tls_Dispatch
  18 #define u_current_context _glapi_tls_Context
  19 #else
  20 #define u_current_table _glapi_Dispatch
  21 #define u_current_context _glapi_Context
  22 #endif
  23
  24 #define u_current_get_table_internal _glapi_get_dispatch
  25 #define u_current_get_context_internal _glapi_get_context
  26
  27 #define u_current_table_tsd _gl_DispatchTSD
  28
  29 #else /* MAPI_MODE_UTIL || MAPI_MODE_GLAPI || MAPI_MODE_BRIDGE */
  30
  31 struct mapi_table;
  32
  33 #ifdef GLX_USE_TLS
  34
  35 extern __thread struct mapi_table *u_current_table
  36     __attribute__((tls_model("initial-exec")));
  37
  38 extern __thread void *u_current_context
  39     __attribute__((tls_model("initial-exec")));
  40
  41 #else /* GLX_USE_TLS */
  42
  43 extern struct mapi_table *u_current_table;
  44 extern void *u_current_context;
  45
  46 #endif /* GLX_USE_TLS */
  47
  48 #endif /* MAPI_MODE_UTIL || MAPI_MODE_GLAPI || MAPI_MODE_BRIDGE */
  49
  50 void
  51 u_current_init(void);
  52
  53 void
  54 u_current_destroy(void);
  55
  56 void
  57 u_current_set_table(const struct mapi_table *tbl);
  58
  59 struct mapi_table *
  60 u_current_get_table_internal(void);
  61
  62 void
  63 u_current_set_context(const void *ptr);
  64
  65 void *
  66 u_current_get_context_internal(void);
  67
  68 static inline const struct mapi_table *
  69 u_current_get_table(void)
  70 {
  71 #ifdef GLX_USE_TLS
  72    return u_current_table;
  73 #else
  74    return (likely(u_current_table) ?
  75          u_current_table : u_current_get_table_internal());
  76 #endif
  77 }
  78
  79 static inline const void *
  80 u_current_get_context(void)
  81 {
  82 #ifdef GLX_USE_TLS
  83    return u_current_context;
  84 #else
  85    return likely(u_current_context) ? u_current_context : u_current_get_context_internal();
  86 #endif
  87 }
  88
  89 #endif /* _U_CURRENT_H_ */