@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
121 lines • 4.46 kB
JavaScript
;
/**
* @license
* Copyright 2019 Google LLC. All Rights Reserved.
* 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.
* =============================================================================
*/
Object.defineProperty(exports, "__esModule", { value: true });
var kernelRegistry = new Map();
var gradRegistry = new Map();
/**
* Returns the kernel function (code) associated with the provided names.
*
* @param kernelName The official name of the kernel.
* @param backendName The official name of the backend.
*/
function getKernel(kernelName, backendName) {
var key = makeKey(kernelName, backendName);
return kernelRegistry.get(key);
}
exports.getKernel = getKernel;
/**
* Returns the registered gradient info associated with the provided kernel.
* @param kernelName The official TF kernel name.
*/
function getGradient(kernelName) {
return gradRegistry.get(kernelName);
}
exports.getGradient = getGradient;
function getKernelsForBackend(backendName) {
var it = kernelRegistry.entries();
var result = [];
while (true) {
var _a = it.next(), done = _a.done, value = _a.value;
if (done) {
break;
}
var key = value[0], config = value[1];
var backend = key.split('_')[0];
if (backend === backendName) {
result.push(config);
}
}
return result;
}
exports.getKernelsForBackend = getKernelsForBackend;
/**
* Registers the function (forward pass) for the kernel in a global registry.
*
* @param config A config object with the following properties:
* - `kernelName` The official name of the kernel.
* - `backendName` The official name of the backend.
* - `kernelFunc` The function to run during the forward pass of the kernel.
* - `setupFunc` Optional. Gets called once, after the backend initializes.
* - `disposeFunc` Optional. Gets called once, right before the backend is
* disposed.
*/
function registerKernel(config) {
var kernelName = config.kernelName, backendName = config.backendName;
var key = makeKey(kernelName, backendName);
if (kernelRegistry.has(key)) {
throw new Error("The kernel '" + kernelName + "' for backend " +
("'" + backendName + "' is already registered"));
}
kernelRegistry.set(key, config);
}
exports.registerKernel = registerKernel;
/**
* Registers a gradient function for a given kernel in the global registry,
* to be used during the back-propagation of that kernel.
*
* @param config An object with the following properties:
* - `kernelName` The name of the kernel that the gradient function is for.
* - `gradFunc` The function to run during back-propagation.
*/
function registerGradient(config) {
var kernelName = config.kernelName;
if (gradRegistry.has(kernelName)) {
console.warn("Overriding the gradient for '" + kernelName + "'");
}
gradRegistry.set(kernelName, config);
}
exports.registerGradient = registerGradient;
/**
* Removes the kernel function from the registry.
*
* @param kernelName The official name of the kernel.
* @param backendName The official name of the backend.
*
*/
function unregisterKernel(kernelName, backendName) {
var key = makeKey(kernelName, backendName);
if (!kernelRegistry.has(key)) {
throw new Error("The kernel '" + kernelName + "' for backend " +
("'" + backendName + "' is not registered"));
}
kernelRegistry.delete(key);
}
exports.unregisterKernel = unregisterKernel;
/** Removes the registered gradient from the global registry. */
function unregisterGradient(kernelName) {
if (!gradRegistry.has(kernelName)) {
throw new Error("The gradient '" + kernelName + "' for backend is not registered");
}
gradRegistry.delete(kernelName);
}
exports.unregisterGradient = unregisterGradient;
function makeKey(kernelName, backendName) {
return backendName + "_" + kernelName;
}
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