diff options
Diffstat (limited to 'ipc/port.h')
| -rw-r--r-- | ipc/port.h | 29 |
1 files changed, 24 insertions, 5 deletions
@@ -39,13 +39,14 @@ #ifndef _IPC_PORT_H_ #define _IPC_PORT_H_ +#include <kern/debug.h> #include <mach/port.h> /* - * mach_port_t must be an unsigned type. Port values + * mach_port_name_t must be an unsigned type. Port values * have two parts, a generation number and an index. * These macros encapsulate all knowledge of how - * a mach_port_t is laid out. + * a mach_port_name_t is laid out. * * If the size of generation numbers changes, * be sure to update IE_BITS_GEN_MASK and friends @@ -67,11 +68,10 @@ /* * Typedefs for code cleanliness. These must all have - * the same (unsigned) type as mach_port_t. + * the same (unsigned) type as mach_port_name_t. */ -typedef mach_port_t mach_port_index_t; /* index values */ -typedef mach_port_t mach_port_gen_t; /* generation numbers */ +typedef mach_port_name_t mach_port_gen_t; /* generation numbers */ #define MACH_PORT_UREFS_MAX ((mach_port_urefs_t) ((1 << 16) - 1)) @@ -84,4 +84,23 @@ typedef mach_port_t mach_port_gen_t; /* generation numbers */ #define MACH_PORT_UREFS_UNDERFLOW(urefs, delta) \ (((delta) < 0) && (-(delta) > (urefs))) + +static inline mach_port_t invalid_name_to_port(mach_port_name_t name) +{ + if (name == MACH_PORT_NAME_NULL) + return MACH_PORT_NULL; + if (name == MACH_PORT_NAME_DEAD) + return MACH_PORT_DEAD; + panic("invalid_name_to_port() called with a valid port"); +} + +static inline mach_port_name_t invalid_port_to_name(mach_port_t port) +{ + if (port == MACH_PORT_NULL) + return MACH_PORT_NAME_NULL; + if (port == MACH_PORT_DEAD) + return MACH_PORT_NAME_DEAD; + panic("invalid_port_to_name() called with a valid name"); +} + #endif /* _IPC_PORT_H_ */ |