* Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* $NetBSD: sem.h,v 1.5 1994/06/29 06:45:15 cgd Exp $ */
#include <sys/cdefs.h>
#include <sys/_types.h>
+#include <machine/types.h> /* __int32_t */
/*
* [XSI] All of the symbols from <sys/ipc.h> SHALL be defined
* NOTE: The definition of the key_t type is implicit from the
* inclusion of <sys/ipc.h>
*/
-#ifndef _PID_T
-typedef __darwin_pid_t pid_t;
-#define _PID_T
-#endif
-
-#ifndef _TIME_T
-#define _TIME_T
-typedef __darwin_time_t time_t;
-#endif
-
-#ifndef _SIZE_T
-#define _SIZE_T
-typedef __darwin_size_t size_t;
-#endif
+#include <sys/_types/_pid_t.h>
+#include <sys/_types/_time_t.h>
+#include <sys/_types/_size_t.h>
/*
* Technically, we should force all code references to the new structure
#pragma pack(4)
/*
* Structure used internally.
- *
+ *
* This structure is exposed because standards dictate that it is used as
* the semun union member 'buf' as the fourth argment to semctl() when the
* third argument is IPC_STAT or IPC_SET.
#if (defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE))
struct semid_ds
#else
-#define semid_ds __semid_ds_new
+#define semid_ds __semid_ds_new
struct __semid_ds_new
#endif
{
- struct __ipc_perm_new sem_perm; /* [XSI] operation permission struct */
- __int32_t sem_base; /* 32 bit base ptr for semaphore set */
- unsigned short sem_nsems; /* [XSI] number of sems in set */
- time_t sem_otime; /* [XSI] last operation time */
- __int32_t sem_pad1; /* RESERVED: DO NOT USE! */
- time_t sem_ctime; /* [XSI] last change time */
- /* Times measured in secs since */
- /* 00:00:00 GMT, Jan. 1, 1970 */
- __int32_t sem_pad2; /* RESERVED: DO NOT USE! */
- __int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
+ struct __ipc_perm_new sem_perm; /* [XSI] operation permission struct */
+ __int32_t sem_base; /* 32 bit base ptr for semaphore set */
+ unsigned short sem_nsems; /* [XSI] number of sems in set */
+ time_t sem_otime; /* [XSI] last operation time */
+ __int32_t sem_pad1; /* RESERVED: DO NOT USE! */
+ time_t sem_ctime; /* [XSI] last change time */
+ /* Times measured in secs since */
+ /* 00:00:00 GMT, Jan. 1, 1970 */
+ __int32_t sem_pad2; /* RESERVED: DO NOT USE! */
+ __int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
};
#pragma pack()
-#else /* !__DARWIN_UNIX03 */
-#define semid_ds __semid_ds_old
-#endif /* __DARWIN_UNIX03 */
+#else /* !__DARWIN_UNIX03 */
+#define semid_ds __semid_ds_old
+#endif /* __DARWIN_UNIX03 */
#if !__DARWIN_UNIX03
struct __semid_ds_old {
- struct __ipc_perm_old sem_perm; /* [XSI] operation permission struct */
- __int32_t sem_base; /* 32 bit base ptr for semaphore set */
- unsigned short sem_nsems; /* [XSI] number of sems in set */
- time_t sem_otime; /* [XSI] last operation time */
- __int32_t sem_pad1; /* RESERVED: DO NOT USE! */
- time_t sem_ctime; /* [XSI] last change time */
- /* Times measured in secs since */
- /* 00:00:00 GMT, Jan. 1, 1970 */
- __int32_t sem_pad2; /* RESERVED: DO NOT USE! */
- __int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
+ struct __ipc_perm_old sem_perm; /* [XSI] operation permission struct */
+ __int32_t sem_base; /* 32 bit base ptr for semaphore set */
+ unsigned short sem_nsems; /* [XSI] number of sems in set */
+ time_t sem_otime; /* [XSI] last operation time */
+ __int32_t sem_pad1; /* RESERVED: DO NOT USE! */
+ time_t sem_ctime; /* [XSI] last change time */
+ /* Times measured in secs since */
+ /* 00:00:00 GMT, Jan. 1, 1970 */
+ __int32_t sem_pad2; /* RESERVED: DO NOT USE! */
+ __int32_t sem_pad3[4]; /* RESERVED: DO NOT USE! */
};
-#endif /* !__DARWIN_UNIX03 */
+#endif /* !__DARWIN_UNIX03 */
/*
* Possible values for the third argument to semctl()
*/
-#define GETNCNT 3 /* [XSI] Return the value of semncnt {READ} */
-#define GETPID 4 /* [XSI] Return the value of sempid {READ} */
-#define GETVAL 5 /* [XSI] Return the value of semval {READ} */
-#define GETALL 6 /* [XSI] Return semvals into arg.array {READ} */
-#define GETZCNT 7 /* [XSI] Return the value of semzcnt {READ} */
-#define SETVAL 8 /* [XSI] Set the value of semval to arg.val {ALTER} */
-#define SETALL 9 /* [XSI] Set semvals from arg.array {ALTER} */
+#define GETNCNT 3 /* [XSI] Return the value of semncnt {READ} */
+#define GETPID 4 /* [XSI] Return the value of sempid {READ} */
+#define GETVAL 5 /* [XSI] Return the value of semval {READ} */
+#define GETALL 6 /* [XSI] Return semvals into arg.array {READ} */
+#define GETZCNT 7 /* [XSI] Return the value of semzcnt {READ} */
+#define SETVAL 8 /* [XSI] Set the value of semval to arg.val {ALTER} */
+#define SETALL 9 /* [XSI] Set semvals from arg.array {ALTER} */
/* A semaphore; this is an anonymous structure, not for external use */
struct sem {
- unsigned short semval; /* semaphore value */
- pid_t sempid; /* pid of last operation */
- unsigned short semncnt; /* # awaiting semval > cval */
- unsigned short semzcnt; /* # awaiting semval == 0 */
+ unsigned short semval; /* semaphore value */
+ pid_t sempid; /* pid of last operation */
+ unsigned short semncnt; /* # awaiting semval > cval */
+ unsigned short semzcnt; /* # awaiting semval == 0 */
};
* Structure of array element for second argument to semop()
*/
struct sembuf {
- unsigned short sem_num; /* [XSI] semaphore # */
- short sem_op; /* [XSI] semaphore operation */
- short sem_flg; /* [XSI] operation flags */
+ unsigned short sem_num; /* [XSI] semaphore # */
+ short sem_op; /* [XSI] semaphore operation */
+ short sem_flg; /* [XSI] operation flags */
};
/*
* Possible flag values for sem_flg
*/
-#define SEM_UNDO 010000 /* [XSI] Set up adjust on exit entry */
+#define SEM_UNDO 010000 /* [XSI] Set up adjust on exit entry */
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
-/*
- * System imposed limit on the value of the third parameter to semop().
- * This is arbitrary, and the standards unfortunately do not provide a
- * way for user applications to retrieve this value (e.g. via sysconf()
- * or from a manifest value in <unistd.h>). The value shown here is
- * informational, and subject to change in future revisions.
- */
-#define MAX_SOPS 5 /* maximum # of sembuf's per semop call */
-
-
/*
* Union used as the fourth argment to semctl() in all cases. Specific
* member values are used for different values of the third parameter:
- *
+ *
* Command Member
* ------------------------------------------- ------
* GETALL, SETALL array
*
* The union definition is intended to be defined by the user application
* in conforming applications; it is provided here for two reasons:
- *
+ *
* 1) Historical source compatability for non-conforming applications
* expecting this header to declare the union type on their behalf
*
* not function correctly
*/
union semun {
- int val; /* value for SETVAL */
- struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */
- unsigned short *array; /* array for GETALL & SETALL */
+ int val; /* value for SETVAL */
+ struct semid_ds *buf; /* buffer for IPC_STAT & IPC_SET */
+ unsigned short *array; /* array for GETALL & SETALL */
};
typedef union semun semun_t;
/*
* Permissions
*/
-#define SEM_A 0200 /* alter permission */
-#define SEM_R 0400 /* read permission */
+#define SEM_A 0200 /* alter permission */
+#define SEM_R 0400 /* read permission */
-#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
+#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
__BEGIN_DECLS
#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
-int semsys(int, ...);
+int semsys(int, ...);
#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
-int semctl(int, int, int, ...) __DARWIN_ALIAS(semctl);
-int semget(key_t, int, int);
-int semop(int, struct sembuf *, size_t);
+int semctl(int, int, int, ...) __DARWIN_ALIAS(semctl);
+int semget(key_t, int, int);
+int semop(int, struct sembuf *, size_t);
__END_DECLS
#endif /* !KERNEL */
projects / apple / xnu.git / blobdiff