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      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_ */
     90