| // |
| // Copyright 2012 Francisco Jerez |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and associated documentation files (the "Software"), |
| // to deal in the Software without restriction, including without limitation |
| // the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| // and/or sell copies of the Software, and to permit persons to whom the |
| // Software is furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| // THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| // SOFTWARE. |
| // |
| |
| #ifndef __CORE_EVENT_HPP__ |
| #define __CORE_EVENT_HPP__ |
| |
| #include <functional> |
| |
| #include "core/base.hpp" |
| #include "core/queue.hpp" |
| |
| namespace clover { |
| typedef struct _cl_event event; |
| } |
| |
| /// |
| /// Class that represents a task that might be executed asynchronously |
| /// at some point in the future. |
| /// |
| /// An event consists of a list of dependencies, a boolean signalled() |
| /// flag, and an associated task. An event is considered signalled as |
| /// soon as all its dependencies (if any) are signalled as well, and |
| /// the trigger() method is called; at that point the associated task |
| /// will be started through the specified \a action_ok. If the |
| /// abort() method is called instead, the specified \a action_fail is |
| /// executed and the associated task will never be started. Dependent |
| /// events will be aborted recursively. |
| /// |
| /// The execution status of the associated task can be queried using |
| /// the status() method, and it can be waited for completion using the |
| /// wait() method. |
| /// |
| struct _cl_event : public clover::ref_counter { |
| public: |
| typedef std::function<void (clover::event &)> action; |
| |
| _cl_event(clover::context &ctx, std::vector<clover::event *> deps, |
| action action_ok, action action_fail); |
| virtual ~_cl_event(); |
| |
| void trigger(); |
| void abort(cl_int status); |
| bool signalled() const; |
| |
| virtual cl_int status() const = 0; |
| virtual cl_command_queue queue() const = 0; |
| virtual cl_command_type command() const = 0; |
| virtual void wait() const = 0; |
| |
| clover::context &ctx; |
| |
| protected: |
| void chain(clover::event *ev); |
| |
| cl_int __status; |
| std::vector<clover::ref_ptr<clover::event>> deps; |
| |
| private: |
| unsigned wait_count; |
| action action_ok; |
| action action_fail; |
| std::vector<clover::ref_ptr<clover::event>> __chain; |
| }; |
| |
| namespace clover { |
| /// |
| /// Class that represents a task executed by a command queue. |
| /// |
| /// Similar to a normal clover::event. In addition it's associated |
| /// with a given command queue \a q and a given OpenCL \a command. |
| /// hard_event instances created for the same queue are implicitly |
| /// ordered with respect to each other, and they are implicitly |
| /// triggered on construction. |
| /// |
| /// A hard_event is considered complete when the associated |
| /// hardware task finishes execution. |
| /// |
| class hard_event : public event { |
| public: |
| hard_event(clover::command_queue &q, cl_command_type command, |
| std::vector<clover::event *> deps, |
| action action = [](event &){}); |
| ~hard_event(); |
| |
| virtual cl_int status() const; |
| virtual cl_command_queue queue() const; |
| virtual cl_command_type command() const; |
| virtual void wait() const; |
| |
| friend class ::_cl_command_queue; |
| |
| private: |
| virtual void fence(pipe_fence_handle *fence); |
| |
| clover::command_queue &__queue; |
| cl_command_type __command; |
| pipe_fence_handle *__fence; |
| }; |
| |
| /// |
| /// Class that represents a software event. |
| /// |
| /// A soft_event is not associated with any specific hardware task |
| /// or command queue. It's considered complete as soon as all its |
| /// dependencies finish execution. |
| /// |
| class soft_event : public event { |
| public: |
| soft_event(clover::context &ctx, std::vector<clover::event *> deps, |
| bool trigger, action action = [](event &){}); |
| |
| virtual cl_int status() const; |
| virtual cl_command_queue queue() const; |
| virtual cl_command_type command() const; |
| virtual void wait() const; |
| }; |
| } |
| |
| #endif |