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-/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
- * 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.
- */
-
-
-/**
- * @file parc_ScheduledTask.h
- * @ingroup threading
- * @brief <#Brief Description#>
- *
- * <#Detailed Description#>
- *
- */
-#ifndef PARCLibrary_parc_ScheduledTask
-#define PARCLibrary_parc_ScheduledTask
-#include <stdbool.h>
-#include <stdint.h>
-
-#include <parc/algol/parc_JSON.h>
-#include <parc/algol/parc_HashCode.h>
-#include <parc/concurrent/parc_FutureTask.h>
-#include <parc/concurrent/parc_Timeout.h>
-
-struct PARCScheduledTask;
-typedef struct PARCScheduledTask PARCScheduledTask;
-
-/**
- * Increase the number of references to a `PARCScheduledTask` instance.
- *
- * Note that new `PARCScheduledTask` is not created,
- * only that the given `PARCScheduledTask` reference count is incremented.
- * Discard the reference by invoking `parcScheduledTask_Release`.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- *
- * @return The same value as @p instance.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * PARCScheduledTask *b = parcScheduledTask_Acquire();
- *
- * parcScheduledTask_Release(&a);
- * parcScheduledTask_Release(&b);
- * }
- * @endcode
- */
-PARCScheduledTask *parcScheduledTask_Acquire(const PARCScheduledTask *instance);
-
-#ifdef PARCLibrary_DISABLE_VALIDATION
-# define parcScheduledTask_OptionalAssertValid(_instance_)
-#else
-# define parcScheduledTask_OptionalAssertValid(_instance_) parcScheduledTask_AssertValid(_instance_)
-#endif
-
-/**
- * Assert that the given `PARCScheduledTask` instance is valid.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * parcScheduledTask_AssertValid(a);
- *
- * printf("Instance is valid.\n");
- *
- * parcScheduledTask_Release(&b);
- * }
- * @endcode
- */
-void parcScheduledTask_AssertValid(const PARCScheduledTask *instance);
-
-/**
- * Create an instance of PARCScheduledTask
- *
- * <#Paragraphs Of Explanation#>
- *
- * @return non-NULL A pointer to a valid PARCScheduledTask instance.
- * @return NULL An error occurred.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * parcScheduledTask_Release(&a);
- * }
- * @endcode
- */
-PARCScheduledTask *parcScheduledTask_Create(PARCFutureTask *task, uint64_t executionTime);
-
-/**
- * Compares @p instance with @p other for order.
- *
- * Returns a negative integer, zero, or a positive integer as @p instance
- * is less than, equal to, or greater than @p other.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- * @param [in] other A pointer to a valid PARCScheduledTask instance.
- *
- * @return <0 Instance is less than @p other.
- * @return 0 Instance a and instance b compare the same.
- * @return >0 Instance a is greater than instance b.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- * PARCScheduledTask *b = parcScheduledTask_Create();
- *
- * if (parcScheduledTask_Compare(a, b) == 0) {
- * printf("Instances are equal.\n");
- * }
- *
- * parcScheduledTask_Release(&a);
- * parcScheduledTask_Release(&b);
- * }
- * @endcode
- *
- * @see parcScheduledTask_Equals
- */
-int parcScheduledTask_Compare(const PARCScheduledTask *instance, const PARCScheduledTask *other);
-
-/**
- * Create an independent copy the given `PARCBuffer`
- *
- * A new buffer is created as a complete copy of the original.
- *
- * @param [in] original A pointer to a valid PARCScheduledTask instance.
- *
- * @return NULL Memory could not be allocated.
- * @return non-NULL A pointer to a new `PARCScheduledTask` instance.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * PARCScheduledTask *copy = parcScheduledTask_Copy(&b);
- *
- * parcScheduledTask_Release(&b);
- * parcScheduledTask_Release(&copy);
- * }
- * @endcode
- */
-PARCScheduledTask *parcScheduledTask_Copy(const PARCScheduledTask *original);
-
-/**
- * Print a human readable representation of the given `PARCScheduledTask`.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- * @param [in] indentation The indentation level to use for printing.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * parcScheduledTask_Display(a, 0);
- *
- * parcScheduledTask_Release(&a);
- * }
- * @endcode
- */
-void parcScheduledTask_Display(const PARCScheduledTask *instance, int indentation);
-
-/**
- * Determine if two `PARCScheduledTask` instances are equal.
- *
- * The following equivalence relations on non-null `PARCScheduledTask` instances are maintained: *
- * * It is reflexive: for any non-null reference value x, `parcScheduledTask_Equals(x, x)` must return true.
- *
- * * It is symmetric: for any non-null reference values x and y, `parcScheduledTask_Equals(x, y)` must return true if and only if
- * `parcScheduledTask_Equals(y x)` returns true.
- *
- * * It is transitive: for any non-null reference values x, y, and z, if
- * `parcScheduledTask_Equals(x, y)` returns true and
- * `parcScheduledTask_Equals(y, z)` returns true,
- * then `parcScheduledTask_Equals(x, z)` must return true.
- *
- * * It is consistent: for any non-null reference values x and y, multiple invocations of `parcScheduledTask_Equals(x, y)`
- * consistently return true or consistently return false.
- *
- * * For any non-null reference value x, `parcScheduledTask_Equals(x, NULL)` must return false.
- *
- * @param [in] x A pointer to a valid PARCScheduledTask instance.
- * @param [in] y A pointer to a valid PARCScheduledTask instance.
- *
- * @return true The instances x and y are equal.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- * PARCScheduledTask *b = parcScheduledTask_Create();
- *
- * if (parcScheduledTask_Equals(a, b)) {
- * printf("Instances are equal.\n");
- * }
- *
- * parcScheduledTask_Release(&a);
- * parcScheduledTask_Release(&b);
- * }
- * @endcode
- * @see parcScheduledTask_HashCode
- */
-bool parcScheduledTask_Equals(const PARCScheduledTask *x, const PARCScheduledTask *y);
-
-/**
- * Returns a hash code value for the given instance.
- *
- * The general contract of `HashCode` is:
- *
- * Whenever it is invoked on the same instance more than once during an execution of an application,
- * the `HashCode` function must consistently return the same value,
- * provided no information used in a corresponding comparisons on the instance is modified.
- *
- * This value need not remain consistent from one execution of an application to another execution of the same application.
- * If two instances are equal according to the {@link parcScheduledTask_Equals} method,
- * then calling the {@link parcScheduledTask_HashCode} method on each of the two instances must produce the same integer result.
- *
- * It is not required that if two instances are unequal according to the
- * {@link parcScheduledTask_Equals} function,
- * then calling the `parcScheduledTask_HashCode`
- * method on each of the two objects must produce distinct integer results.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- *
- * @return The hashcode for the given instance.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * PARCHashCode hashValue = parcScheduledTask_HashCode(buffer);
- * parcScheduledTask_Release(&a);
- * }
- * @endcode
- */
-PARCHashCode parcScheduledTask_HashCode(const PARCScheduledTask *instance);
-
-/**
- * Determine if an instance of `PARCScheduledTask` is valid.
- *
- * Valid means the internal state of the type is consistent with its required current or future behaviour.
- * This may include the validation of internal instances of types.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- *
- * @return true The instance is valid.
- * @return false The instance is not valid.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * if (parcScheduledTask_IsValid(a)) {
- * printf("Instance is valid.\n");
- * }
- *
- * parcScheduledTask_Release(&a);
- * }
- * @endcode
- *
- */
-bool parcScheduledTask_IsValid(const PARCScheduledTask *instance);
-
-/**
- * Release a previously acquired reference to the given `PARCScheduledTask` instance,
- * decrementing the reference count for the instance.
- *
- * The pointer to the instance is set to NULL as a side-effect of this function.
- *
- * If the invocation causes the last reference to the instance to be released,
- * the instance is deallocated and the instance's implementation will perform
- * additional cleanup and release other privately held references.
- *
- * @param [in,out] instancePtr A pointer to a pointer to the instance to release.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * parcScheduledTask_Release(&a);
- * }
- * @endcode
- */
-void parcScheduledTask_Release(PARCScheduledTask **instancePtr);
-
-/**
- * Create a `PARCJSON` instance (representation) of the given object.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- *
- * @return NULL Memory could not be allocated to contain the `PARCJSON` instance.
- * @return non-NULL An allocated C string that must be deallocated via parcMemory_Deallocate().
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * PARCJSON *json = parcScheduledTask_ToJSON(a);
- *
- * printf("JSON representation: %s\n", parcJSON_ToString(json));
- * parcJSON_Release(&json);
- *
- * parcScheduledTask_Release(&a);
- * }
- * @endcode
- */
-PARCJSON *parcScheduledTask_ToJSON(const PARCScheduledTask *instance);
-
-/**
- * Produce a null-terminated string representation of the specified `PARCScheduledTask`.
- *
- * The result must be freed by the caller via {@link parcMemory_Deallocate}.
- *
- * @param [in] instance A pointer to a valid PARCScheduledTask instance.
- *
- * @return NULL Cannot allocate memory.
- * @return non-NULL A pointer to an allocated, null-terminated C string that must be deallocated via {@link parcMemory_Deallocate}.
- *
- * Example:
- * @code
- * {
- * PARCScheduledTask *a = parcScheduledTask_Create();
- *
- * char *string = parcScheduledTask_ToString(a);
- *
- * parcScheduledTask_Release(&a);
- *
- * parcMemory_Deallocate(&string);
- * }
- * @endcode
- *
- * @see parcScheduledTask_Display
- */
-char *parcScheduledTask_ToString(const PARCScheduledTask *instance);
-
-/**
- * Returns the remaining delay associated with this object.
- *
- * @param [in] task A pointer to a valid PARCScheduledTask instance.
- *
- * @return the remaining delay; zero or negative values indicate that the delay has already elapsed
- *
- * Example:
- * @code
- * {
- * <#example#>
- * }
- * @endcode
- */
-uint64_t parcScheduledTask_GetExecutionTime(const PARCScheduledTask *task);
-
-/**
- * Attempts to cancel execution of this task.
- *
- * <#Paragraphs Of Explanation#>
- *
- * @param [<#in#> | <#out#> | <#in,out#>] <#name#> <#description#>
- *
- * @return <#value#> <#explanation#>
- *
- * Example:
- * @code
- * {
- * <#example#>
- * }
- * @endcode
- */
-bool parcScheduledTask_Cancel(PARCScheduledTask *task, bool mayInterruptIfRunning);
-
-/**
- * Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available.
- *
- * <#Paragraphs Of Explanation#>
- *
- * @param [<#in#> | <#out#> | <#in,out#>] <#name#> <#description#>
- *
- * @return <#value#> <#explanation#>
- *
- * Example:
- * @code
- * {
- * <#example#>
- * }
- * @endcode
- */
-PARCFutureTaskResult parcScheduledTask_Get(const PARCScheduledTask *task, const PARCTimeout *timeout);
-
-
-void *parcScheduledTask_Run(const PARCScheduledTask *task);
-
-
-/**
- * Get the `PARCFutureTask` instance for the given `PARCScheduledTask`
- *
- * @param [in] task A pointer to a valid `PARCScheduledTask` instance.
- *
- * @return the `PARCFutureTask` instance for the given `PARCScheduledTask`
- *
- * Example:
- * @code
- * {
- * <#example#>
- * }
- * @endcode
- */
-PARCFutureTask *parcScheduledTask_GetTask(const PARCScheduledTask *task);
-
-/**
- * Returns true if this task was cancelled before it completed normally.
- *
- * <#Paragraphs Of Explanation#>
- *
- * @param [<#in#> | <#out#> | <#in,out#>] <#name#> <#description#>
- *
- * @return <#value#> <#explanation#>
- *
- * Example:
- * @code
- * {
- * <#example#>
- * }
- * @endcode
- */
-bool parcScheduledTask_IsCancelled(const PARCScheduledTask *task);
-
-/**
- * Returns true if this task completed.
- *
- * <#Paragraphs Of Explanation#>
- *
- * @param [<#in#> | <#out#> | <#in,out#>] <#name#> <#description#>
- *
- * @return <#value#> <#explanation#>
- *
- * Example:
- * @code
- * {
- * <#example#>
- * }
- * @endcode
- */
-bool parcScheduledTask_IsDone(const PARCScheduledTask *task);
-#endif