diff options
Diffstat (limited to 'winsup/cygwin/include/cygwin/shm.h')
| -rw-r--r-- | winsup/cygwin/include/cygwin/shm.h | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/winsup/cygwin/include/cygwin/shm.h b/winsup/cygwin/include/cygwin/shm.h index 2c882012c..c58599379 100644 --- a/winsup/cygwin/include/cygwin/shm.h +++ b/winsup/cygwin/include/cygwin/shm.h @@ -1,6 +1,6 @@ /* sys/shm.h - Copyright 2001, 2002 Red Hat Inc. + Copyright 2001, 2002, 2012, 2013 Red Hat Inc. Written by Robert Collins <rbtcollins@hotmail.com> This file is part of Cygwin. @@ -40,12 +40,12 @@ extern "C" /* Unsigned integer used for the number of current attaches. */ -typedef unsigned int shmatt_t; +typedef uint32_t shmatt_t; struct shmid_ds { struct ipc_perm shm_perm; /* Operation permission structure. */ - size_t shm_segsz; /* Size of segment in bytes. */ + uint32_t shm_segsz; /* Size of segment in bytes. */ pid_t shm_lpid; /* Process ID of last operation. */ pid_t shm_cpid; /* Process ID of creator. */ shmatt_t shm_nattch;/* Number of current attaches. */ @@ -69,17 +69,20 @@ struct shmid_ds */ struct shminfo { - long shmmax; /* Maximum size in bytes of a shared + int32_t shmmax; /* Maximum size in bytes of a shared memory segment. */ - long shmmin; /* Minimum size in bytes of a shared + int32_t shmmin; /* Minimum size in bytes of a shared memory segment. */ - long shmmni; /* Maximum number of shared memory + int32_t shmmni; /* Maximum number of shared memory segments, system wide. */ - long shmseg; /* Maximum number of shared memory + int32_t shmseg; /* Maximum number of shared memory segments attached per process. */ - long shmall; /* Maximum number of bytes of shared - memory, system wide. */ - long shm_spare[4]; + int32_t shmall; /* Maximum number of bytes of shared + memory, system wide. + Note that XSI IPC shared memory allocation is + restricted to a bit less than 2 Gigs, even on + 64 bit, so using an int32_t here is sufficient. */ + int32_t shm_spare[4]; }; /* Buffer type for shmctl (SHM_INFO, ...) as used by ipcs(8). @@ -87,9 +90,9 @@ struct shminfo struct shm_info { #define shm_ids used_ids - long used_ids; /* Number of allocated segments. */ - long shm_tot; /* Size in bytes of allocated segments. */ - long shm_atts; /* Number of attached segments, system + int32_t used_ids; /* Number of allocated segments. */ + int32_t shm_tot; /* Size in bytes of allocated segments. */ + int32_t shm_atts; /* Number of attached segments, system wide. */ }; #endif /* _KERNEL */ |