Libc-262.tar.gz

[apple/libc.git] / mach / headers / port_obj.h

diff --git a/mach/headers/port_obj.h b/mach/headers/port_obj.h
new file mode 100644 (file)
index 0000000..796972c
--- /dev/null
+++ b/mach/headers/port_obj.h
@@ -0,0 +1,71 @@
+/*
+ * @OSF_COPYRIGHT@
+ */
+
+/*
+ * Define a service to map from a kernel-generated port name
+ * to server-defined "type" and "value" data to be associated
+ * with the port.
+ */
+
+#ifndef PORT_OBJ_H
+#define PORT_OBJ_H
+
+#include <mach/port.h>
+
+struct port_obj_tentry {
+       void *pos_value;
+       int pos_type;
+};
+
+extern void port_obj_init(int);
+extern struct port_obj_tentry *port_obj_table;
+extern int port_obj_table_size;
+
+#ifndef PORT_OBJ_ASSERT
+
+#define port_set_obj_value_type(pname, value, type)    \
+do {                                                   \
+       int ndx;                                        \
+                                                       \
+       if (!port_obj_table)                            \
+               port_obj_init(port_obj_table_size);     \
+       ndx = MACH_PORT_INDEX(pname);                   \
+       port_obj_table[ndx].pos_value = (value);        \
+       port_obj_table[ndx].pos_type = (type);          \
+} while (0)
+
+#define port_get_obj_value(pname)                      \
+       (port_obj_table[MACH_PORT_INDEX(pname)].pos_value)
+
+#define port_get_obj_type(pname)                       \
+       (port_obj_table[MACH_PORT_INDEX(pname)].pos_type)
+
+#else  /* PORT_OBJ_ASSERT */
+
+#define port_set_obj_value_type(pname, value, type)    \
+do {                                                   \
+       int ndx;                                        \
+                                                       \
+       if (!port_obj_table)                            \
+               port_obj_init(port_obj_table_size);     \
+       ndx = MACH_PORT_INDEX(pname);                   \
+       assert(ndx > 0);                                \
+       assert(ndx < port_obj_table_size);              \
+       port_obj_table[ndx].pos_value = (value);        \
+       port_obj_table[ndx].pos_type = (type);          \
+} while (0)
+
+#define port_get_obj_value(pname)                              \
+       ((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?     \
+       port_obj_table[MACH_PORT_INDEX(pname)].pos_value :      \
+       (panic("port_get_obj_value: index too big"), (void *)-1))
+
+#define port_get_obj_type(pname)                               \
+       ((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?     \
+       port_obj_table[MACH_PORT_INDEX(pname)].pos_type :       \
+       (panic("port_get_obj_type: index too big"), -1))
+
+#endif /* PORT_OBJ_ASSERT */
+
+#endif /* PORT_OBJ_H */