342 lines
7.8 KiB
C
342 lines
7.8 KiB
C
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/*
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* (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
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* (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
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* (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
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* (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
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* To anyone who acknowledges that this file is provided "AS IS" without
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* any express or implied warranty: permission to use, copy, modify, and
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* distribute this file for any purpose is hereby granted without fee,
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* provided that the above copyright notices and this notice appears in
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* all source code copies, and that none of the names listed above be used
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* in advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. None of these organizations
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* makes any representations about the suitability of this software for
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* any purpose.
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*/
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/*
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* Header file for attributes object
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*/
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#ifndef CMA_ATTR
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#define CMA_ATTR
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/*
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* INCLUDE FILES
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*/
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#include <cma_defs.h>
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#include <cma_queue.h>
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#ifdef __hpux
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# include <sys/param.h>
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#endif
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#if _CMA_UNIX_TYPE == _CMA__SVR4
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#include <sys/unistd.h>
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#endif
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/*
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* CONSTANTS AND MACROS
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*/
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/*
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* FUNCTIONAL DESCRIPTION:
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*
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* cma__int_attr_get_priority - Performs the work of cma_attr_get_priority
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*
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* FORMAL PARAMETERS:
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*
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* cma_t_attr *_att_ - Attribute object to get from
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* cma_t_priority *_setting_ - Current setting
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*
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* IMPLICIT INPUTS:
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*
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* none
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*
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* IMPLICIT OUTPUTS:
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*
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* priority
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*
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* FUNCTION VALUE:
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*
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* none
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*
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* SIDE EFFECTS:
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*
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* none
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*/
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#define cma__int_attr_get_priority(_att_,_setting_) { \
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cma__t_int_attr *_int_att_; \
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(_int_att_) = cma__validate_default_attr (_att_); \
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cma__int_lock ((_int_att_)->mutex); \
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(*(_setting_)) = (_int_att_)->priority; \
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cma__int_unlock ((_int_att_)->mutex); \
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}
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/*
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* FUNCTIONAL DESCRIPTION:
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*
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* cma__int_attr_get_sched - Performs work of cma_attr_get_sched
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*
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* FORMAL PARAMETERS:
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*
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* cma_t_attr *_att_ _ Attributes object used
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* cma_t_sched_policy *_setting_ - Current setting
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*
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* IMPLICIT INPUTS:
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*
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* none
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*
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* IMPLICIT OUTPUTS:
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*
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* scheduling policy
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*
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* FUNCTION VALUE:
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*
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* none
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*
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* SIDE EFFECTS:
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*
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* none
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*/
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#define cma__int_attr_get_sched(_att_,_setting_) { \
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cma__t_int_attr *_int_att_; \
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(_int_att_) = cma__validate_default_attr (_att_); \
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cma__int_lock ((_int_att_)->mutex); \
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(*(_setting_)) = (_int_att_)->policy; \
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cma__int_unlock ((_int_att_)->mutex); \
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}
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/*
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* FUNCTIONAL DESCRIPTION:
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*
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* cma__int_attr_get_inherit_sched - Performs work of
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* cma_attr_get_inherit_sched
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*
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* FORMAL PARAMETERS:
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*
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* cma_t_attr *_att_ - Attributes object to use
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* cma_t_sched_inherit *_setting_ - Current setting
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*
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* IMPLICIT INPUTS:
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*
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* none
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*
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* IMPLICIT OUTPUTS:
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*
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* Inheritable scheduling policy
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*
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* FUNCTION VALUE:
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*
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* none
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*
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* SIDE EFFECTS:
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*
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* none
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*/
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#define cma__int_attr_get_inherit_sched(_att_,_setting_) { \
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cma__t_int_attr *_int_att_; \
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(_int_att_) = cma__validate_default_attr (_att_); \
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cma__int_lock ((_int_att_)->mutex); \
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(*(_setting_)) \
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= ((_int_att_)->inherit_sched ? cma_c_sched_inherit : cma_c_sched_use_default); \
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cma__int_unlock ((_int_att_)->mutex); \
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}
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/*
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* FUNCTIONAL DESCRIPTION:
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*
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* cma__int_attr_set_stacksize - Performs work for cma_attr_set_stacksize
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*
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* FORMAL PARAMETERS:
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*
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* cma_t_attr *_att_ - Attributes object to use
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* cma_t_natural _setting_ - Setting
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*
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* IMPLICIT INPUTS:
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*
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* none
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*
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* IMPLICIT OUTPUTS:
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*
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* none
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*
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* FUNCTION VALUE:
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*
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* none
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*
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* SIDE EFFECTS:
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*
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* Change attribute objects stack size setting
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*/
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#define cma__int_attr_set_stacksize(_att_,_setting_) { \
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cma__t_int_attr *_int_att_; \
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if ((_setting_) <= 0) \
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cma__error (cma_s_badparam); \
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_int_att_ = cma__validate_attr (_att_); \
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cma__int_lock ((_int_att_)->mutex); \
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_int_att_->stack_size = cma__roundup_chunksize(_setting_); \
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cma__free_cache (_int_att_, cma__c_obj_tcb); \
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_int_att_->cache[cma__c_obj_tcb].revision++; \
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_int_att_->cache[cma__c_obj_stack].revision++; \
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cma__int_unlock (_int_att_->mutex); \
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}
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/*
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* FUNCTIONAL DESCRIPTION:
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*
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* cma__int_attr_get_stacksize - Performs work of cma_attr_get_stacksize
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*
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* FORMAL PARAMETERS:
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*
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* cma_t_attr *_att_ - Attributes object to use
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* cma_t_natural *_setting_ - Current setting
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*
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* IMPLICIT INPUTS:
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*
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* none
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*
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* IMPLICIT OUTPUTS:
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*
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* Attribute objects stack size setting
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*
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* FUNCTION VALUE:
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*
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* none
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*
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* SIDE EFFECTS:
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*
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* none
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*/
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#define cma__int_attr_get_stacksize(_att_,_setting_) { \
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cma__t_int_attr *_int_att_; \
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(_int_att_) = cma__validate_default_attr (_att_); \
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cma__int_lock ((_int_att_)->mutex); \
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(*(_setting_)) = (_int_att_)->stack_size; \
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cma__int_unlock ((_int_att_)->mutex); \
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}
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/*
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* FUNCTIONAL DESCRIPTION:
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*
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* cma__int_attr_set_guardsize - Performs work for cma_attr_set_guardsize
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*
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* FORMAL PARAMETERS:
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*
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* cma_t_attr *_att_ - Attributes object to use
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* cma_t_natural _setting_ - Setting
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*
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* IMPLICIT INPUTS:
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*
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* none
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*
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* IMPLICIT OUTPUTS:
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*
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* none
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*
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* FUNCTION VALUE:
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*
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* none
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*
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* SIDE EFFECTS:
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*
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* Change attribute objects guard size setting
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*/
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#define cma__int_attr_set_guardsize(_att_,_setting_) { \
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cma__t_int_attr *_int_att_; \
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_int_att_ = cma__validate_attr (_att_); \
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cma__int_lock ((_int_att_)->mutex); \
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_int_att_->guard_size = cma__roundup_chunksize(_setting_); \
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cma__free_cache (_int_att_, cma__c_obj_tcb); \
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_int_att_->cache[cma__c_obj_tcb].revision++; \
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_int_att_->cache[cma__c_obj_stack].revision++; \
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cma__int_unlock (_int_att_->mutex); \
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}
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/*
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* FUNCTIONAL DESCRIPTION:
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*
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* cma__int_attr_get_guardsize - Performs work of cma_attr_get_guardsize
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*
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* FORMAL PARAMETERS:
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*
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* cma_t_attr *_att_ - Attributes object to use
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* cma_t_natural *_setting_ - Current setting
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*
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* IMPLICIT INPUTS:
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*
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* none
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*
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* IMPLICIT OUTPUTS:
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*
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* Attribute objects guard size setting
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*
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* FUNCTION VALUE:
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*
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* none
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*
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* SIDE EFFECTS:
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*
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* none
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*/
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#define cma__int_attr_get_guardsize(_att_,_setting_) { \
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cma__t_int_attr *_int_att_; \
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(_int_att_) = cma__validate_default_attr (_att_); \
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cma__int_lock ((_int_att_)->mutex); \
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(*(_setting_)) = (_int_att_)->guard_size; \
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cma__int_unlock ((_int_att_)->mutex); \
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}
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/*
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* TYPEDEFS
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*/
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#ifndef __STDC__
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struct CMA__T_INT_MUTEX; /* Avoid circular dependency */
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#endif
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typedef struct CMA__T_CACHE {
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cma_t_natural revision; /* Revisions */
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cma_t_natural count;
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cma__t_queue queue; /* Cache headers */
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} cma__t_cache;
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typedef struct CMA__T_INT_ATTR {
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cma__t_object header; /* Common header */
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struct CMA__T_INT_ATTR *attributes; /* Point to controlling attr */
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struct CMA__T_INT_MUTEX *mutex; /* Serialize access to object */
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cma_t_priority priority; /* Priority of new thread */
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cma_t_sched_policy policy; /* Sched policy of thread */
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cma_t_boolean inherit_sched; /* Is scheduling inherited? */
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cma_t_natural stack_size; /* Size of stack (bytes) */
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cma_t_natural guard_size; /* Size of guard (bytes) */
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cma_t_mutex_kind mutex_kind; /* Mutex kind */
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cma__t_cache cache[cma__c_obj_num]; /* Cache information */
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cma_t_boolean delete_pending; /* attr. obj. is deleted */
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cma_t_natural refcnt; /* Number of objects using attr. obj */
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} cma__t_int_attr;
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/*
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* GLOBAL DATA
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*/
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extern cma__t_int_attr cma__g_def_attr;
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/*
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* INTERNAL INTERFACES
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*/
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extern void cma__destroy_attributes (cma__t_int_attr *);
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extern void cma__free_attributes (cma__t_int_attr *);
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extern void cma__free_cache (cma__t_int_attr *,cma_t_natural );
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extern cma__t_int_attr *cma__get_attributes (cma__t_int_attr *);
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extern void cma__init_attr (void);
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extern void cma__reinit_attr (cma_t_integer);
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#endif
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