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29 //! @file executor.h
31 #pragma once
32 #include <string>
33 #include <vector>
34 #include <memory>
35 #include <cstdint>
36 #include <cassert>
37 #include <set>
38 #include <exception>
40 #include "configuration.h"
41 #include "custom.h"
43 namespace tinn {
45 //! Enumerates types of devices available to offload the network.
46 enum class DeviceType { DSP, /**< Offload to C66x DSP */
47 DLA /**< Offload to TI DLA */
48 };
50 //! Enumerates IDs for devices of a given type.
51 enum class DeviceId : int { ID0=0, /**< DSP1 or DLA1 */
52 ID1, /**< DSP2 or DLA2 */
53 ID2, /**< DLA3 */
54 ID3 /**< DLA4 */
55 };
57 //! Used to specify the set of devices available to an Executor
58 typedef std::set<DeviceId> DeviceIds;
60 class ExecutorImpl;
61 class ExecutionObject;
63 //! Defines the return type for Executor::GetExecutionObjects
64 typedef std::vector<std::unique_ptr<ExecutionObject>> ExecutionObjects;
66 /*! @class Executor
67 @brief Manages the overall execution of a network using the
68 specified configuration and the set of devices available to the
69 executor.
70 */
71 class Executor
72 {
73 public:
74 //! @brief Create an Executor object.
75 //!
76 //! The Executor will create the required ExecutionObject's and
77 //! initialize them with the specified TI DL network. E.g.
78 //! @code
79 //! Configuration configuration;
80 //! configuration.ReadFromFile("path to configuration file");
81 //! DeviceIds ids1 = {DeviceId::ID2, DeviceId::ID3};
82 //! Executor executor(DeviceType::DLA, ids, configuration);
83 //! @endcode
84 //!
85 //! @param device_type DSP or EVE/DLA device
86 //! @param ids Set of devices uses by this instance of the Executor
87 //! @param configuration Configuration used to initialize the Executor
88 Executor(DeviceType device_type, const DeviceIds& ids,
89 const Configuration& configuration);
91 //! @brief Tear down an Executor and free resources used by the
92 //! Executor object
93 ~Executor();
95 //! Returns a vector of unique_ptr's to execution objects
96 //! available on this instance of the Executor
97 const ExecutionObjects& GetExecutionObjects() const;
99 //! @brief Returns the number of devices of the specified type
100 //! available for TI DL.
101 //! @param device_type DSP or EVE/DLA device
102 //! @return number of devices available
103 static uint32_t GetNumDevices(DeviceType device_type);
105 //! @brief Returns a string corresponding to the API version
106 //!
107 //! @return <major_ver>.<minor_ver>.<patch_ver>.<git_sha>
108 static std::string GetAPIVersion();
110 Executor(const Executor&) = delete;
111 Executor& operator= (const Executor&) = delete;
114 private:
115 std::unique_ptr<ExecutorImpl> pimpl_m;
116 };
118 /*! @class PipeInfo
119 * @brief Describe input and output required by piping output and input
120 * between Execution Objects
121 */
122 class PipeInfo
123 {
124 public:
125 uint32_t dataQ_m[OCL_TIDL_MAX_IN_BUFS];
126 uint32_t bufAddr_m[OCL_TIDL_MAX_IN_BUFS];
127 };
129 /*! @class ArgInfo
130 * @brief Describe input and output buffers required by ExecutionObjects
131 */
132 class ArgInfo
133 {
134 public:
135 enum class DeviceAccess { R_ONLY=0, W_ONLY, RW };
137 //! Enumerates the types of arguments represented by ArgInfo
138 enum class Kind { BUFFER=0, SCALAR };
140 //! Construct an ArgInfo object from a pointer to a chunk of memory
141 //! and its size.
142 ArgInfo(void *p, size_t size) :
143 ptr_m(p), size_m(size),
144 access_m(DeviceAccess::RW), kind_m(Kind::BUFFER)
145 { pipe_m = std::make_shared<PipeInfo>(); }
147 //! Construct an ArgInfo object from a pointer to a chunk of memory
148 //! its size and kind
149 ArgInfo(void *p, size_t size, Kind kind) :
150 ptr_m(p), size_m(size), access_m(DeviceAccess::RW), kind_m(kind) {}
152 //! @return Pointer to the buffer or scalar represented by ArgInfo
153 void *ptr() const { return ptr_m; }
155 //! @return The size of the buffer or scalar represented by ArgInfo
156 size_t size() const { return size_m; }
158 // Only used by tinn::Device
159 Kind kind() const { return kind_m; }
160 bool isLocal() const { return (ptr_m == nullptr) && (size_m > 0); }
162 // Only used by tinn::ExecutionObject::Impl
163 PipeInfo *GetPipe() const { return pipe_m.get(); }
165 private:
166 void* ptr_m;
167 size_t size_m;
168 DeviceAccess access_m;
169 Kind kind_m;
170 std::shared_ptr<PipeInfo> pipe_m;
171 };
174 extern "C" void __free_ddr(void *ptr);
175 extern "C" void* __malloc_ddr(size_t s);
177 //! template typedef for unique_ptr with __free_ddr deleter
178 template<class T>
179 using up_malloc_ddr = std::unique_ptr<T, decltype(&__free_ddr)>;
181 //! __malloc_ddr wrapper - Bytes allocated determined by sizeof(T)
182 template<class T>
183 inline T* malloc_ddr()
184 {
185 assert (std::is_pointer<T>::value == false);
186 T* val = reinterpret_cast<T *>(__malloc_ddr(sizeof(T)));
187 assert (val != nullptr);
188 return val;
189 }
191 //! __malloc_ddr wrapper - Bytes allocated passed as argument
192 template<class T>
193 inline T* malloc_ddr(size_t size)
194 {
195 assert (std::is_pointer<T>::value == false);
196 T* val = reinterpret_cast<T *>(__malloc_ddr(size));
197 assert (val != nullptr);
198 return val;
199 }
201 /*! @class Exception
202 * @brief Used to error reporting
203 */
204 class Exception : public std::exception
205 {
206 public:
207 Exception() {}
208 Exception(const std::string& error, const std::string& file,
209 const std::string& func, uint32_t line_no);
210 Exception(int32_t errorCode, const std::string& file,
211 const std::string& func, uint32_t line_no);
213 virtual ~Exception() {}
215 //! @return String describing the error message and its location
216 virtual const char* what() const noexcept;
218 private:
219 std::string message_m;
220 };
222 } // namespace tinn