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Diffstat (limited to 'winsup/cygwin/include/cygwin/sem.h')
| -rw-r--r-- | winsup/cygwin/include/cygwin/sem.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/winsup/cygwin/include/cygwin/sem.h b/winsup/cygwin/include/cygwin/sem.h deleted file mode 100644 index af7a42f36..000000000 --- a/winsup/cygwin/include/cygwin/sem.h +++ /dev/null @@ -1,128 +0,0 @@ -/* sys/sem.h - - Copyright 2002 Red Hat Inc. - Written by Conrad Scott <conrad.scott@dsl.pipex.com> - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#ifndef _CYGWIN_SEM_H -#define _CYGWIN_SEM_H - -#include <cygwin/ipc.h> - -#ifdef __cplusplus -extern "C" -{ -#endif - -/* Semaphore operation flags: - */ -#define SEM_UNDO 010000 /* Set up adjust on exit entry. */ - -/* Command definitions for the semctl () function: - */ -#define GETNCNT 0x3000 /* Get semncnt. */ -#define GETPID 0x3001 /* Get sempid. */ -#define GETVAL 0x3002 /* Get semval. */ -#define GETALL 0x3003 /* Get all cases of semval. */ -#define GETZCNT 0x3004 /* Get semzcnt. */ -#define SETVAL 0x3005 /* Set semval. */ -#define SETALL 0x3006 /* Set all cases of semval. */ - -#ifdef _KERNEL -#define SEM_STAT 0x3010 /* For ipcs(8). */ -#define SEM_INFO 0x3011 /* For ipcs(8). */ -#endif /* _KERNEL */ - -struct semid_ds -{ - struct ipc_perm sem_perm; /* Operation permission structure. */ - unsigned short sem_nsems; /* Number of semaphores in set. */ - timestruc_t sem_otim; /* Last semop () time. */ - timestruc_t sem_ctim; /* Last time changed by semctl (). */ -#ifdef _KERNEL - struct sem *sem_base; /* pointer to first semaphore in set */ - long sem_spare4[1]; -#else - long sem_spare4[2]; -#endif /* _KERNEL */ -}; - -#define sem_otime sem_otim.tv_sec -#define sem_ctime sem_ctim.tv_sec - -struct sembuf -{ - unsigned short sem_num; /* Semaphore number. */ - short sem_op; /* Semaphore operation. */ - short sem_flg; /* Operation flags. */ -}; - -#ifdef _KERNEL -/* Buffer type for semctl (IPC_INFO, ...) as used by ipcs(8). - */ -struct seminfo -{ - long semmni; /* Maximum number of unique semaphore - sets, system wide. */ - long semmns; /* Maximum number of semaphores, - system wide. */ - long semmsl; /* Maximum number of semaphores per - semaphore set. */ - long semopm; /* Maximum number of operations per - semop call. */ - long semmnu; /* Maximum number of undo structures, - system wide. */ - long semume; /* Maximum number of undo entries per - undo structure. */ - long semvmx; /* Maximum semaphore value. */ - long semaem; /* Maximum adjust-on-exit value. */ - long semmap; /* # of entries in semaphore map */ - long semusz; /* size in bytes of undo structure */ - long sem_spare[2]; -}; - -/* Buffer type for semctl (SEM_INFO, ...) as used by ipcs(8). - */ -struct sem_info -{ - long sem_ids; /* Number of allocated semaphore sets. */ - long sem_num; /* Number of allocated semaphores. */ -}; - -/* Permission flags */ -#define SEM_A IPC_W /* alter permission */ -#define SEM_R IPC_R /* read permission */ - -/* Internally used mode bits. */ -#define SEM_ALLOC 01000 /* semaphore is allocated */ - -#endif /* _KERNEL */ - -#ifdef _KERNEL -/* According to SUSv3, "the fourth argument [to semctl()] is optional and - depends upon the operation requested. If required, it is of type - union semun, which the application shall explicitly declare:" */ -union semun { - int val; /* value for SETVAL */ - struct semid_ds *buf; /* buffer for IPC_STAT, IPC_SET */ - unsigned short *array; /* array for GETALL, SETALL */ -}; -/* Therefore this union is only declared here if building internal code. - _KERNEL must not be defined in exernal applications! Declare union - semun explicitely as required by SUSv3, please. */ -#endif /* _KERNEL */ - -int semctl (int semid, int semnum, int cmd, ...); -int semget (key_t key, int nsems, int semflg); -int semop (int semid, struct sembuf *sops, size_t nsops); - -#ifdef __cplusplus -} -#endif - -#endif /* _CYGWIN_SEM_H */ |