/usr/include/globus/globus_thread_rw_mutex.h is in libglobus-common-dev 16.9-1.
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 | /*
* Copyright 1999-2006 University of Chicago
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef GLOBUS_THREAD_RW_MUTEX_H
#define GLOBUS_THREAD_RW_MUTEX_H 1
#include "globus_common_include.h"
#include "globus_thread.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct
{
globus_mutex_t mutex;
struct globus_i_rw_mutex_waiter_s * waiters;
struct globus_i_rw_mutex_waiter_s ** tail;
struct globus_i_rw_mutex_waiter_s * idle;
globus_bool_t writing;
int readers;
} globus_rw_mutex_t;
typedef int globus_rw_mutexattr_t;
int
globus_rw_mutex_init(
globus_rw_mutex_t * rw_lock,
globus_rw_mutexattr_t * attr);
int
globus_rw_mutex_readlock(
globus_rw_mutex_t * rw_lock);
int
globus_rw_mutex_writelock(
globus_rw_mutex_t * rw_lock);
int
globus_rw_mutex_readunlock(
globus_rw_mutex_t * rw_lock);
int
globus_rw_mutex_writeunlock(
globus_rw_mutex_t * rw_lock);
int
globus_rw_mutex_destroy(
globus_rw_mutex_t * rw_lock);
/**
* In order to use the following cond_wait calls safeley, either the call to
* one of the wait calls or the call to cond_signal/broadcast or both MUST be
* called from within a WRITElock.
*
* It turns out that you normally only signal/broadcast after making some
* modification anyway, so the simple rule to remember is:
*
* Always call globus_cond_signal/broadcast from within a WRITElock.
*/
int
globus_rw_cond_wait(
globus_cond_t * cond,
globus_rw_mutex_t * rw_lock);
int
globus_rw_cond_timedwait(
globus_cond_t * cond,
globus_rw_mutex_t * rw_lock,
globus_abstime_t * abstime);
#ifdef __cplusplus
}
#endif
#endif /* GLOBUS_THREAD_RW_MUTEX_H */
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