mach.subproj/headers.subproj/port_obj.h

   1 /*
   2  * @OSF_COPYRIGHT@
   3  */
   4
   5 /*
   6  * Define a service to map from a kernel-generated port name
   7  * to server-defined "type" and "value" data to be associated
   8  * with the port.
   9  */
  10
  11 #ifndef PORT_OBJ_H
  12 #define PORT_OBJ_H
  13
  14 #include <mach/port.h>
  15
  16 struct port_obj_tentry {
  17         void *pos_value;
  18         int pos_type;
  19 };
  20
  21 extern void port_obj_init(int);
  22 extern struct port_obj_tentry *port_obj_table;
  23 extern int port_obj_table_size;
  24
  25 #ifndef PORT_OBJ_ASSERT
  26
  27 #define port_set_obj_value_type(pname, value, type)     \
  28 do {                                                    \
  29         int ndx;                                        \
  30                                                         \
  31         if (!port_obj_table)                            \
  32                 port_obj_init(port_obj_table_size);     \
  33         ndx = MACH_PORT_INDEX(pname);                   \
  34         port_obj_table[ndx].pos_value = (value);        \
  35         port_obj_table[ndx].pos_type = (type);          \
  36 } while (0)
  37
  38 #define port_get_obj_value(pname)                       \
  39         (port_obj_table[MACH_PORT_INDEX(pname)].pos_value)
  40
  41 #define port_get_obj_type(pname)                        \
  42         (port_obj_table[MACH_PORT_INDEX(pname)].pos_type)
  43
  44 #else   /* PORT_OBJ_ASSERT */
  45
  46 #define port_set_obj_value_type(pname, value, type)     \
  47 do {                                                    \
  48         int ndx;                                        \
  49                                                         \
  50         if (!port_obj_table)                            \
  51                 port_obj_init(port_obj_table_size);     \
  52         ndx = MACH_PORT_INDEX(pname);                   \
  53         assert(ndx > 0);                                \
  54         assert(ndx < port_obj_table_size);              \
  55         port_obj_table[ndx].pos_value = (value);        \
  56         port_obj_table[ndx].pos_type = (type);          \
  57 } while (0)
  58
  59 #define port_get_obj_value(pname)                               \
  60         ((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?     \
  61         port_obj_table[MACH_PORT_INDEX(pname)].pos_value :      \
  62         (panic("port_get_obj_value: index too big"), (void *)-1))
  63
  64 #define port_get_obj_type(pname)                                \
  65         ((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?     \
  66         port_obj_table[MACH_PORT_INDEX(pname)].pos_type :       \
  67         (panic("port_get_obj_type: index too big"), -1))
  68
  69 #endif  /* PORT_OBJ_ASSERT */
  70
  71 #endif  /* PORT_OBJ_H */