121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
/*
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Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef NDB_CONDITION_H
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#define NDB_CONDITION_H
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#include "NdbMutex.h"
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#include "thr_cond.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct NdbCondition
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{
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native_cond_t cond;
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};
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/**
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* Create a condition
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*
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* returnvalue: pointer to the condition structure
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*/
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struct NdbCondition* NdbCondition_Create(void);
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/**
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* Initialize a condition created with file-storage or on the stack
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*
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* returnvalue: 0 = success
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*/
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int NdbCondition_Init(struct NdbCondition* p_cond);
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/**
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* Wait for a condition, allows a thread to wait for
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* a condition and atomically releases the associated mutex.
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*
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* p_cond: pointer to the condition structure
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* p_mutex: pointer to the mutex structure
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* returnvalue: 0 = succeeded, 1 = failed
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*/
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int NdbCondition_Wait(struct NdbCondition* p_cond,
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NdbMutex* p_mutex);
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/*
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* Wait for a condition with timeout, allows a thread to
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* wait for a condition and atomically releases the associated mutex.
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*
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* @param p_cond - pointer to the condition structure
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* @param p_mutex - pointer to the mutex structure
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* @param msec - Wait for msec milli seconds the most
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* @return 0 = succeeded, 1 = failed
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* @
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*/
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int
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NdbCondition_WaitTimeout(struct NdbCondition* p_cond,
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NdbMutex* p_mutex,
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int msec);
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/*
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* same as NdbCondition_WaitTimeout only that
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* endtime is a absolute time computed using
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* NdbCondition_ComputeAbsTime
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*/
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int
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NdbCondition_WaitTimeoutAbs(struct NdbCondition* p_cond,
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NdbMutex* p_mutex,
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const struct timespec * endtime);
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/**
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* compute an absolute time suitable for use with NdbCondition_WaitTimeoutAbs
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* and store it in <em>dst</em> <em>ms</em> specifies milliseconds from now
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*/
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void
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NdbCondition_ComputeAbsTime(struct timespec * dst, unsigned ms);
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/**
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* Signal a condition
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*
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* p_cond: pointer to the condition structure
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* returnvalue: 0 = succeeded, 1 = failed
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*/
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int NdbCondition_Signal(struct NdbCondition* p_cond);
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/**
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* Broadcast a condition
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*
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* p_cond: pointer to the condition structure
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* returnvalue: 0 = succeeded, 1 = failed
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*/
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int NdbCondition_Broadcast(struct NdbCondition* p_cond);
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/**
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* Destroy a condition
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*
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* p_cond: pointer to the condition structure
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* returnvalue: 0 = succeeded, 1 = failed
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*/
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int NdbCondition_Destroy(struct NdbCondition* p_cond);
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#ifdef __cplusplus
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}
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#endif
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#endif
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