230 lines
8.8 KiB
C
230 lines
8.8 KiB
C
/*************************************************************************
|
|
* *
|
|
* Open Dynamics Engine, Copyright (C) 2001-2003 Russell L. Smith. *
|
|
* All rights reserved. Email: russ@q12.org Web: www.q12.org *
|
|
* *
|
|
* This library is free software; you can redistribute it and/or *
|
|
* modify it under the terms of EITHER: *
|
|
* (1) The GNU Lesser General Public License as published by the Free *
|
|
* Software Foundation; either version 2.1 of the License, or (at *
|
|
* your option) any later version. The text of the GNU Lesser *
|
|
* General Public License is included with this library in the *
|
|
* file LICENSE.TXT. *
|
|
* (2) The BSD-style license that is included with this library in *
|
|
* the file LICENSE-BSD.TXT. *
|
|
* *
|
|
* This library is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files *
|
|
* LICENSE.TXT and LICENSE-BSD.TXT for more details. *
|
|
* *
|
|
*************************************************************************/
|
|
|
|
#ifndef _ODE_COOPERATIVE_H_
|
|
#define _ODE_COOPERATIVE_H_
|
|
|
|
|
|
#include <ode/common.h>
|
|
#include <ode/threading.h>
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @defgroup coop Cooperative Algorithms
|
|
*
|
|
* Algorithms implemented as multiple threads doing work cooperatively.
|
|
*/
|
|
|
|
|
|
struct dxCooperative;
|
|
struct dxResourceRequirements;
|
|
struct dxResourceContainer;
|
|
|
|
/**
|
|
* @brief A container for cooperative algorithms shared context
|
|
*
|
|
* The Cooperative is a container for cooperative algorithms shared context.
|
|
* At present it contains threading object (either a real one or a defaulted
|
|
* self-threading).
|
|
*
|
|
* Cooperative use in functions performing computations must be serialized. That is,
|
|
* functions referring to a single instance of Cooperative object must not be called in
|
|
* parallel.
|
|
*/
|
|
typedef struct dxCooperative *dCooperativeID;
|
|
|
|
|
|
/**
|
|
* @brief A container for resource requirements information
|
|
*
|
|
* The ResourceRequirements object is a container for descriptive information
|
|
* regarding what resources (memory, synchronization objects, etc.) need to be
|
|
* allocated for particular computations. The object can be used for accumulating
|
|
* resource requirement maxima over multiple functions and then allocating resources
|
|
* that would suffice for any of those function calls.
|
|
*
|
|
* ResourceRequirements objects maintain relations to Cooperative objects since
|
|
* amounts of resources that could be required can depend on characteristics of
|
|
* shared context, e.g. on maximal number of threads in the threading object.
|
|
*
|
|
* @ingroup coop
|
|
* @see dCooperativeID
|
|
* @see dResourceContainerID
|
|
*/
|
|
typedef struct dxResourceRequirements *dResourceRequirementsID;
|
|
|
|
/**
|
|
* @brief A container for algorithm allocated resources
|
|
*
|
|
* The ResourceContainer object can contain resources allocated according to information
|
|
* in a ResourceRequirements. The resources inherit link to the threading object
|
|
* from the requirements they are allocated according to.
|
|
*
|
|
* @ingroup coop
|
|
* @see dResourceRequirementsID
|
|
* @see dCooperativeID
|
|
*/
|
|
typedef struct dxResourceContainer *dResourceContainerID;
|
|
|
|
|
|
/**
|
|
* @brief Creates a Cooperative object related to the specified threading.
|
|
*
|
|
* NULL's are allowed for the threading. In this case the default (global) self-threading
|
|
* object will be used.
|
|
*
|
|
* Use @c dCooperativeDestroy to destroy the object. The Cooperative object must exist
|
|
* until after all the objects referencing it are destroyed.
|
|
*
|
|
* @param functionInfo The threading functions to use
|
|
* @param threadingImpl The threading implementation object to use
|
|
* @returns The Cooperative object instance or NULL if allocation fails.
|
|
* @ingroup coop
|
|
* @see dCooperativeDestroy
|
|
*/
|
|
ODE_API dCooperativeID dCooperativeCreate(const dThreadingFunctionsInfo *functionInfo/*=NULL*/, dThreadingImplementationID threadingImpl/*=NULL*/);
|
|
|
|
/**
|
|
* @brief Destroys Cooperative object.
|
|
*
|
|
* The Cooperative object can only be destroyed after all the objects referencing it.
|
|
*
|
|
* @param cooperative A Cooperative object to be deleted (NULL is allowed)
|
|
* @ingroup coop
|
|
* @see dCooperativeCreate
|
|
*/
|
|
ODE_API void dCooperativeDestroy(dCooperativeID cooperative);
|
|
|
|
|
|
/**
|
|
* @brief Creates a ResourceRequirements object related to a Cooperative.
|
|
*
|
|
* The object is purely descriptive and does not contain any resources by itself.
|
|
* The actual resources are allocated by means of ResourceContainer object.
|
|
*
|
|
* The object is created with empty requirements. It can be then used to accumulate
|
|
* requirements for one or more function calls and can be cloned or merged with others.
|
|
* The actual requirements information is added to the object by computation related
|
|
* functions.
|
|
*
|
|
* Use @c dResourceRequirementsDestroy to delete the object when it is no longer needed.
|
|
*
|
|
* @param cooperative A Cooperative object to be used
|
|
* @returns The ResourceRequirements object instance or NULL if allocation fails
|
|
* @ingroup coop
|
|
* @see dResourceRequirementsDestroy
|
|
* @see dResourceRequirementsClone
|
|
* @see dResourceRequirementsMergeIn
|
|
* @see dCooperativeCreate
|
|
* @see dResourceContainerAcquire
|
|
*/
|
|
ODE_API dResourceRequirementsID dResourceRequirementsCreate(dCooperativeID cooperative);
|
|
|
|
/**
|
|
* @brief Destroys ResourceRequirements object.
|
|
*
|
|
* The ResourceRequirements object can be destroyed at any time with no regards
|
|
* to other objects' lifetime.
|
|
*
|
|
* @param requirements A ResourceRequirements object to be deleted (NULL is allowed)
|
|
* @ingroup coop
|
|
* @see dResourceRequirementsCreate
|
|
*/
|
|
ODE_API void dResourceRequirementsDestroy(dResourceRequirementsID requirements);
|
|
|
|
/**
|
|
* @brief Clones ResourceRequirements object.
|
|
*
|
|
* The function creates a copy of the ResourceRequirements object with all the
|
|
* contents and the relation to Cooperative matching. The object passed in
|
|
* the parameter is not changed.
|
|
*
|
|
* The object created with the function must later be destroyed with @c dResourceRequirementsDestroy.
|
|
*
|
|
* @param requirements A ResourceRequirements object to be cloned
|
|
* @returns A handle to the new object or NULL if allocation fails
|
|
* @ingroup coop
|
|
* @see dResourceRequirementsCreate
|
|
* @see dResourceRequirementsDestroy
|
|
* @see dResourceRequirementsMergeIn
|
|
*/
|
|
ODE_API dResourceRequirementsID dResourceRequirementsClone(/*const */dResourceRequirementsID requirements);
|
|
|
|
/**
|
|
* @brief Merges one ResourceRequirements object into another ResourceRequirements object.
|
|
*
|
|
* The function updates @a summaryRequirements requirements to be also sufficient
|
|
* for the purposes @a extraRequirements could be used for. The @a extraRequirements
|
|
* object is not changed. Both objects should normally have been created
|
|
* with the same Cooperative object.
|
|
*
|
|
* @param summaryRequirements A ResourceRequirements object to be changed
|
|
* @param extraRequirements A ResourceRequirements the requirements to be taken from
|
|
* @ingroup coop
|
|
* @see dResourceRequirementsCreate
|
|
* @see dResourceRequirementsDestroy
|
|
* @see dResourceRequirementsClone
|
|
*/
|
|
ODE_API void dResourceRequirementsMergeIn(dResourceRequirementsID summaryRequirements, /*const */dResourceRequirementsID extraRequirements);
|
|
|
|
|
|
/**
|
|
* @brief Allocates resources as specified in ResourceRequirements object.
|
|
*
|
|
* The ResourceContainer object can be used in cooperative computation algorithms.
|
|
*
|
|
* The same @a requirements object can be passed to many resource allocations
|
|
* (with or without modifications) and can be deleted immediately, without waiting
|
|
* for the ResourceContainer object destruction.
|
|
*
|
|
* Use @c dResourceContainerDestroy to delete the object and release the resources
|
|
* when they are no longer needed.
|
|
*
|
|
* @param requirements The ResourceRequirements object to allocate resources according to
|
|
* @returns A ResourceContainer object instance with the resources allocated or NULL if allocation fails
|
|
* @ingroup coop
|
|
* @see dResourceContainerDestroy
|
|
* @see dResourceRequirementsCreate
|
|
*/
|
|
ODE_API dResourceContainerID dResourceContainerAcquire(/*const */dResourceRequirementsID requirements);
|
|
|
|
/**
|
|
* @brief Destroys ResourceContainer object and releases resources allocated in it.
|
|
*
|
|
* @param resources A ResourceContainer object to be deleted (NULL is allowed)
|
|
* @ingroup coop
|
|
* @see dResourceContainerAcquire
|
|
*/
|
|
ODE_API void dResourceContainerDestroy(dResourceContainerID resources);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
|
|
#endif // #ifndef _ODE_COOPERATIVE_H_
|