/usr/include/ncbi-vdb/kproc/sem.h is in libncbi-vdb-dev 2.8.1+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | /*===========================================================================
*
* PUBLIC DOMAIN NOTICE
* National Center for Biotechnology Information
*
* This software/database is a "United States Government Work" under the
* terms of the United States Copyright Act. It was written as part of
* the author's official duties as a United States Government employee and
* thus cannot be copyrighted. This software/database is freely available
* to the public for use. The National Library of Medicine and the U.S.
* Government have not placed any restriction on its use or reproduction.
*
* Although all reasonable efforts have been taken to ensure the accuracy
* and reliability of the software and data, the NLM and the U.S.
* Government do not and cannot warrant the performance or results that
* may be obtained by using this software or data. The NLM and the U.S.
* Government disclaim all warranties, express or implied, including
* warranties of performance, merchantability or fitness for any particular
* purpose.
*
* Please cite the author in any work or product based on this material.
*
* ===========================================================================
*
*/
#ifndef _h_kproc_sem_
#define _h_kproc_sem_
#ifndef _h_kproc_extern_
#include <kproc/extern.h>
#endif
#ifndef _h_klib_defs_
#include <klib/defs.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*--------------------------------------------------------------------------
* forwards
*/
struct KLock;
struct timeout_t;
/*--------------------------------------------------------------------------
* KSemaphore
* a metering device
*/
typedef struct KSemaphore KSemaphore;
/* Make
*
* "count" [ IN ] - initial count value
*/
KPROC_EXTERN rc_t CC KSemaphoreMake ( KSemaphore **sem, uint64_t count );
/* AddRef
* Release
*/
KPROC_EXTERN rc_t CC KSemaphoreAddRef ( const KSemaphore *self );
KPROC_EXTERN rc_t CC KSemaphoreRelease ( const KSemaphore *self );
/* Wait
* block until a count becomes available
*
* "lock" [ IN ] - externally acquired lock
*
* "tm" [ IN, NULL OKAY ] - optional timeout where
* NULL means timeout value of 0
*/
KPROC_EXTERN rc_t CC KSemaphoreWait ( KSemaphore *self, struct KLock *lock );
KPROC_EXTERN rc_t CC KSemaphoreTimedWait ( KSemaphore *self,
struct KLock *lock, struct timeout_t *tm );
/* Cancel
* signal that the count will never increase
*
* NB - external lock used for synchronization must be locked by current thread
*/
KPROC_EXTERN rc_t CC KSemaphoreCancel ( KSemaphore *self );
/* Signal
* signal that a count has become available
*
* NB - external lock used for synchronization must be locked by current thread
*/
KPROC_EXTERN rc_t CC KSemaphoreSignal ( KSemaphore *self );
/* Alloc
* allocate a count
* used for resource metering
*
* "lock" [ IN ] - externally acquired lock
*
* "count" [ IN ] - the resource count
*
* "tm" [ IN, NULL OKAY ] - optional timeout where
* NULL means timeout value of 0
*/
KPROC_EXTERN rc_t CC KSemaphoreAlloc ( KSemaphore *self,
struct KLock *lock, uint64_t count );
KPROC_EXTERN rc_t CC KSemaphoreTimedAlloc ( KSemaphore *self,
struct KLock *lock, uint64_t count, struct timeout_t *tm );
/* Free
* signal that resources have become available
*
* NB - external lock used for synchronization must be locked by current thread
*/
KPROC_EXTERN rc_t CC KSemaphoreFree ( KSemaphore *self, uint64_t count );
/* Count
* request the current resource usage
*
* "count" [ OUT ] - return parameter for current count
*
* NB - external lock used for synchronization must be locked by current thread
*/
KPROC_EXTERN rc_t CC KSemaphoreCount ( const KSemaphore *self, uint64_t *count );
#ifdef __cplusplus
}
#endif
#endif /* _h_kproc_sem_ */
|