chore: import upstream snapshot with attribution

2026-07-13 13:33:03 +08:00
commit 5b57521aa1
8226 changed files with 3425766 additions and 0 deletions
@@ -0,0 +1,75 @@
+//
+//  CPUReduceJoin.cpp
+//  MNN
+//
+//  Created by MNN on 2018/08/05.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "backend/cpu/CPUReduceJoin.hpp"
+#include "core/AutoStorage.h"
+#include "core/Macro.h"
+#include "core/TensorUtils.hpp"
+
+namespace MNN {
+
+class CPUReduceJoinExecutor : public Execution {
+public:
+    CPUReduceJoinExecutor(Backend* bn, const MNN::Op* op) : Execution(bn) {
+        auto rdjoin = op->main_as_ReduceJoin();
+        mKeepDims   = rdjoin->keepDims();
+        if (nullptr != rdjoin->separator()) {
+            mSeperate = rdjoin->separator()->c_str();
+        }
+    }
+    virtual ~CPUReduceJoinExecutor() = default;
+
+    virtual ErrorCode onExecute(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs) override {
+        auto inputTensor  = inputs[0];
+        auto outputTensor = outputs[0];
+        TensorUtils::clearHandleData(outputTensor);
+
+        char* outputString = nullptr;
+        auto inputSize     = inputTensor->size() / inputTensor->getType().bytes();
+        auto inputStrings  = inputTensor->host<char*>();
+        std::vector<int> lengths(inputSize);
+        int totalLength = 0;
+        for (int i = 0; i < inputSize; ++i) {
+            int length = (int)::strlen(inputStrings[i]);
+            lengths[i] = length;
+            totalLength += length;
+        }
+
+        auto fullLength = totalLength + (inputSize - 1) * mSeperate.size() + 1;
+
+        AutoStorage<char> outputStringBuffer((int)fullLength);
+        outputString                 = outputStringBuffer.get();
+        outputString[fullLength - 1] = 0;
+
+        ::memcpy(outputString, inputStrings[0], lengths[0] * sizeof(char));
+
+        int currentPos = lengths[0];
+        for (int i = 1; i < inputSize; ++i) {
+            ::memcpy(outputString + currentPos, mSeperate.c_str(), mSeperate.size() * sizeof(char));
+            currentPos += mSeperate.size();
+
+            ::memcpy(outputString + currentPos, inputStrings[i], lengths[i] * sizeof(char));
+            currentPos += lengths[i];
+        }
+        outputTensor->host<char*>()[0] = ::strdup(outputString);
+        return NO_ERROR;
+    }
+
+private:
+    std::string mSeperate;
+    bool mKeepDims;
+};
+
+Execution* CPUReduceJoinCreator::onCreate(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs,
+                                          const MNN::Op* op, Backend* backend) const {
+    return new CPUReduceJoinExecutor(backend, op);
+}
+
+REGISTER_CPU_OP_CREATOR(CPUReduceJoinCreator, OpType_ReduceJoin);
+
+} // namespace MNN