Initial Commit: Based on TI OpenCL v0.8, originally based on clover.shamrock_v0.8

This is a continuation of the clover OpenCL project:
        http://people.freedesktop.org/~steckdenis/clover

based on the contributions from Texas Instruments for Keystone II DSP device:
        git.ti.com/opencl

and adding contributions from Linaro for ARM CPU-only support.

See README.txt for more info, and build instructions.

Signed-off-by: Gil Pitney <gil.pitney@linaro.org>

1 files changed, 113 insertions, 0 deletions

diff --git a/src/core/cpu/device.h b/src/core/cpu/device.h
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+++ b/src/core/cpu/device.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2011, Denis Steckelmacher <steckdenis@yahoo.fr>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the copyright holder nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file cpu/device.h
+ * \brief CPU device
+ */
+
+#ifndef __CPU_DEVICE_H__
+#define __CPU_DEVICE_H__
+
+#include "../deviceinterface.h"
+
+#include <pthread.h>
+#include <list>
+#include <string>
+
+namespace Coal
+{
+
+class MemObject;
+class Event;
+class Program;
+class Kernel;
+
+/**
+ * \brief CPU device
+ *
+ * This class is the base of all the CPU-accelerated OpenCL processing. It
+ * creates and manages subclasses such as \c Coal::DeviceBuffer,
+ * \c Coal::DeviceProgram and \c Coal::DeviceKernel.
+ *
+ * This class and the aforementioned ones work together to compile and run
+ * kernels using the LLVM JIT, manage buffers, provide built-in functions
+ * and do all of this in a multithreaded fashion using worker threads.
+ *
+ * \see \ref events
+ */
+class CPUDevice : public DeviceInterface
+{
+    public:
+        CPUDevice();
+        ~CPUDevice();
+
+        /**
+         * \brief Initialize the CPU device
+         *
+         * This function creates the worker threads and get information about
+         * the host system for the \c numCPUs() and \c cpuMhz functions.
+         */
+        void init();
+
+        cl_int info(cl_device_info param_name,
+                    size_t param_value_size,
+                    void *param_value,
+                    size_t *param_value_size_ret) const;
+
+        DeviceBuffer *createDeviceBuffer(MemObject *buffer, cl_int *rs);
+        DeviceProgram *createDeviceProgram(Program *program);
+        DeviceKernel *createDeviceKernel(Kernel *kernel,
+                                         llvm::Function *function);
+
+        cl_int initEventDeviceData(Event *event);
+        void freeEventDeviceData(Event *event);
+
+        void pushEvent(Event *event);
+        Event *getEvent(bool &stop);
+        bool gotEnoughToWorkOn();
+
+        unsigned int numCPUs() const;   /*!< \brief Number of logical CPU cores on the system */
+        float cpuMhz() const;           /*!< \brief Speed of the CPU in Mhz */
+
+        std::string builtinsHeader(void) const { return "cpu.h"; }
+
+    private:
+        unsigned int p_cores, p_num_events;
+        float       p_cpu_mhz;
+        std::string p_device_name;
+        pthread_t *p_workers;
+
+        std::list<Event *> p_events;
+        pthread_cond_t p_events_cond;
+        pthread_mutex_t p_events_mutex;
+        bool p_stop, p_initialized;
+};
+
+}
+
+#endif