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 #ifdef USE_ELF_TLS
  14 #define u_current_table _glapi_tls_Dispatch
  15 #define u_current_context _glapi_tls_Context
  16 #else
  17 #define u_current_table _glapi_Dispatch
  18 #define u_current_context _glapi_Context
  19 #endif
  20
  21 #define u_current_get_table_internal _glapi_get_dispatch
  22 #define u_current_get_context_internal _glapi_get_context
  23
  24 #define u_current_table_tsd _gl_DispatchTSD
  25
  26 #else /* MAPI_MODE_UTIL || MAPI_MODE_GLAPI || MAPI_MODE_BRIDGE */
  27
  28 struct _glapi_table;
  29
  30 #ifdef USE_ELF_TLS
  31
  32 extern __thread struct _glapi_table *u_current_table
  33     __attribute__((tls_model("initial-exec")));
  34
  35 extern __thread void *u_current_context
  36     __attribute__((tls_model("initial-exec")));
  37
  38 #else /* USE_ELF_TLS */
  39
  40 extern struct _glapi_table *u_current_table;
  41 extern void *u_current_context;
  42
  43 #endif /* USE_ELF_TLS */
  44
  45 #endif /* MAPI_MODE_UTIL || MAPI_MODE_GLAPI || MAPI_MODE_BRIDGE */
  46
  47 void
  48 u_current_init(void);
  49
  50 void
  51 u_current_destroy(void);
  52
  53 void
  54 u_current_set_table(const struct _glapi_table *tbl);
  55
  56 struct _glapi_table *
  57 u_current_get_table_internal(void);
  58
  59 void
  60 u_current_set_context(const void *ptr);
  61
  62 void *
  63 u_current_get_context_internal(void);
  64
  65 static inline const struct _glapi_table *
  66 u_current_get_table(void)
  67 {
  68 #ifdef USE_ELF_TLS
  69    return u_current_table;
  70 #else
  71    return (likely(u_current_table) ?
  72          u_current_table : u_current_get_table_internal());
  73 #endif
  74 }
  75
  76 static inline const void *
  77 u_current_get_context(void)
  78 {
  79 #ifdef USE_ELF_TLS
  80    return u_current_context;
  81 #else
  82    return likely(u_current_context) ? u_current_context : u_current_get_context_internal();
  83 #endif
  84 }
  85
  86 #endif /* _U_CURRENT_H_ */