233 lines
7.1 KiB
Java
233 lines
7.1 KiB
Java
/*
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* Copyright (c) 2002-2010 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.opencl;
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import org.lwjgl.PointerBuffer;
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import org.lwjgl.opencl.api.Filter;
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import java.nio.ByteBuffer;
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import java.nio.IntBuffer;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import static java.lang.Math.*;
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/**
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* This class is a wrapper around a cl_platform_id pointer.
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*
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* @author Spasi
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*/
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public final class CLPlatform extends CLObject {
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private static final CLPlatformUtil util = (CLPlatformUtil)getInfoUtilInstance(CLPlatform.class, "CL_PLATFORM_UTIL");
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private static final Map<Long, CLPlatform> clPlatforms = new HashMap<Long, CLPlatform>();
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private final CLObjectRegistry<CLDevice> clDevices;
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/** Global registry for build callbacks. */
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static final Map<Long, CLDevice> clDevicesGlobal = new HashMap<Long, CLDevice>();
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private Object caps;
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CLPlatform(final long pointer) {
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super(pointer);
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if ( isValid() ) {
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clPlatforms.put(pointer, this);
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clDevices = new CLObjectRegistryGlobal<CLDevice>(clDevicesGlobal);
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} else
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clDevices = null;
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}
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/**
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* Returns a CLPlatform with the specified id.
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*
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* @param id the platform object id
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*
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* @return the CLPlatform object
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*/
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public static CLPlatform getCLPlatform(final long id) { return clPlatforms.get(id); }
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/**
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* Returns a CLDevice that is available on this platform.
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*
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* @param id the device object id
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*
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* @return the CLDevice object
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*/
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public CLDevice getCLDevice(final long id) { return clDevices.getObject(id); }
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// ---------------[ UTILITY METHODS ]---------------
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@SuppressWarnings("unchecked")
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static <T extends CLObject> InfoUtil<T> getInfoUtilInstance(final Class<T> clazz, final String fieldName) {
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InfoUtil<T> instance = null;
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try {
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final Class<?> infoUtil = Class.forName("org.lwjgl.opencl.InfoUtilFactory");
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instance = (InfoUtil<T>)infoUtil.getDeclaredField(fieldName).get(null);
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} catch (Exception e) {
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// Ignore
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}
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return instance;
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}
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/**
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* Returns a list of all the available platforms.
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*
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* @return the available platforms
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*/
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public static List<CLPlatform> getPlatforms() {
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return getPlatforms(null);
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}
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/**
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* Returns a list of the available platforms, filtered by the specified filter.
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*
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* @param filter the platform filter
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*
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* @return the available platforms
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*/
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public static List<CLPlatform> getPlatforms(final Filter<CLPlatform> filter) {
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return util.getPlatforms(filter);
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}
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/**
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* Returns the String value of the specified parameter.
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*
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* @param param_name the parameter
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*
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* @return the parameter value
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*/
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public String getInfoString(int param_name) {
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return util.getInfoString(this, param_name);
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}
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/**
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* Returns a list of the available devices on this platform that
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* match the specified type.
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*
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* @param device_type the device type
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*
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* @return the available devices
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*/
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public List<CLDevice> getDevices(final int device_type) {
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return getDevices(device_type, null);
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}
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/**
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* Returns a list of the available devices on this platform that
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* match the specified type, filtered by the specified filter.
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*
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* @param device_type the device type
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* @param filter the device filter
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*
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* @return the available devices
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*/
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public List<CLDevice> getDevices(final int device_type, final Filter<CLDevice> filter) {
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return util.getDevices(this, device_type, filter);
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}
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/** CLPlatform utility methods interface. */
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interface CLPlatformUtil extends InfoUtil<CLPlatform> {
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List<CLPlatform> getPlatforms(Filter<CLPlatform> filter);
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List<CLDevice> getDevices(CLPlatform platform, int device_type, final Filter<CLDevice> filter);
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}
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// -------[ IMPLEMENTATION STUFF BELOW ]-------
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void setCapabilities(final Object caps) {
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this.caps = caps;
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}
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Object getCapabilities() {
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return caps;
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}
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/**
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* Called from clGetPlatformIDs to register new platforms.
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*
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* @param platforms a buffer containing CLPlatform pointers.
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*/
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static void registerCLPlatforms(final PointerBuffer platforms, final IntBuffer num_platforms) {
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if ( platforms == null )
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return;
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final int pos = platforms.position();
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final int count = min(num_platforms.get(0), platforms.remaining()); // We can't depend on .remaining()
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for ( int i = 0; i < count; i++ ) {
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final long id = platforms.get(pos + i);
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if ( !clPlatforms.containsKey(id) )
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new CLPlatform(id);
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}
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}
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CLObjectRegistry<CLDevice> getCLDeviceRegistry() { return clDevices; }
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static CLDevice getCLDeviceGlobal(final long id) { return clDevicesGlobal.get(id); }
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/**
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* Called from <code>clGetDeviceIDs</code> to register new devices.
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*
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* @param devices a buffer containing CLDevice pointers.
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*/
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void registerCLDevices(final PointerBuffer devices, final IntBuffer num_devices) {
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final int pos = devices.position();
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final int count = min(num_devices.get(num_devices.position()), devices.remaining()); // We can't depend on .remaining()
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for ( int i = 0; i < count; i++ ) {
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final long id = devices.get(pos + i);
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if ( !clDevices.hasObject(id) )
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new CLDevice(id, this);
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}
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}
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/**
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* Called from <code>clGetContextInfo</code> to register new devices.
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*
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* @param devices a buffer containing CLDevice pointers.
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*/
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void registerCLDevices(final ByteBuffer devices, final PointerBuffer num_devices) {
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final int pos = devices.position();
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final int count = min((int)num_devices.get(num_devices.position()), devices.remaining()) / PointerBuffer.getPointerSize(); // We can't depend on .remaining()
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for ( int i = 0; i < count; i++ ) {
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final int offset = pos + (i * PointerBuffer.getPointerSize());
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final long id = PointerBuffer.is64Bit() ? devices.getLong(offset) : devices.getInt(offset);
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if ( !clDevices.hasObject(id) )
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new CLDevice(id, this);
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}
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}
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} |