implement expr benchmark in mysql mode

2021-11-29 14:58:10 +08:00
parent f0e34e03f6
commit 7b9fe43335
7 changed files with 159 additions and 1 deletions
--- a/src/sql/engine/expr/ob_expr_benchmark.cpp
+++ b/src/sql/engine/expr/ob_expr_benchmark.cpp
@ -0,0 +1,116 @@
+// (C) Copyright 2013-2016 Alibaba Inc. All Rights Reserved.
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// version 2 as published by the Free Software Foundation.
+// Version: $Id$
+//  Authors:
+//    peihan.dph@alibaba-inc.com
+//  Normalizer:
+//    peihan.dph@alibaba-inc.com
+// This file is for implementation of func expr_benchmark
+
+#define USING_LOG_PREFIX SQL_ENG
+
+#include "sql/engine/expr/ob_expr_benchmark.h"
+#include "sql/engine/ob_exec_context.h"
+#include "sql/session/ob_sql_session_info.h"
+#include "common/ob_smart_call.h"
+
+namespace oceanbase {
+using namespace common;
+
+namespace sql {
+
+ObExprBenchmark::ObExprBenchmark(ObIAllocator &alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_BENCHMARK, N_BENCHMARK, 2, NOT_ROW_DIMENSION)
+{}
+
+int ObExprBenchmark::calc_result_type2(
+    ObExprResType &type, ObExprResType &type1, ObExprResType &type2, ObExprTypeCtx &type_ctx) const
+{
+  int ret = OB_SUCCESS;
+  UNUSED(type2);
+  UNUSED(type_ctx);
+  type.set_int32();
+  type1.set_calc_type(ObIntType);
+  return ret;
+}
+
+int ObExprBenchmark::calc_result2(ObObj &res, const ObObj &obj1, const ObObj &obj2, ObExprCtx &expr_ctx) const
+{
+  UNUSED(res);
+  UNUSED(obj1);
+  UNUSED(obj2);
+  UNUSED(expr_ctx);
+  int ret = OB_NOT_SUPPORTED;
+  LOG_WARN("expr benchmark is not implemented in old engine", K(ret));
+  return ret;
+}
+
+int ObExprBenchmark::cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const
+{
+  int ret = OB_SUCCESS;
+  UNUSED(raw_expr);
+  UNUSED(expr_cg_ctx);
+  CK(2 == rt_expr.arg_cnt_);
+  if (GET_MIN_CLUSTER_VERSION() < CLUSTER_VERSION_3100) {
+    ret = OB_NOT_SUPPORTED;
+    LOG_WARN("expr benchmark is not implemented", K(ret));
+  } else {
+    rt_expr.eval_func_ = ObExprBenchmark::eval_benchmark;
+  }
+  return ret;
+}
+
+int ObExprBenchmark::eval_benchmark(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum)
+{
+  int ret = OB_SUCCESS;
+  ObDatum *loop_count;
+  if (OB_FAIL(expr.args_[0]->eval(ctx, loop_count))) {
+    LOG_WARN("failed to eval loop count", K(ret));
+  } else if (loop_count->is_null() || loop_count->get_int() < 0) {
+    expr_datum.set_null();
+    if (!loop_count->is_null() && loop_count->get_int() < 0) {
+      LOG_WARN("Incorrect count value for function benchmark", K(loop_count->get_int()));
+    }
+  } else {
+    ObArray<ObExpr *> exprs_to_clear;
+    int64_t loops = loop_count->get_int();
+    ObDatum *tmp_datum = nullptr;
+    if (OB_FAIL(collect_exprs(exprs_to_clear, expr, ctx))) {
+      LOG_WARN("failed to collect expr", K(ret));
+    } else {
+      for (int64_t i = 0; OB_SUCC(ret) && i < loops && OB_SUCC(THIS_WORKER.check_status()); ++i) {
+        clear_all_flags(exprs_to_clear, ctx);
+        OZ(expr.args_[1]->eval(ctx, tmp_datum));
+      }
+    }
+    expr_datum.set_int32(0);
+    exprs_to_clear.destroy();
+  }
+  return ret;
+}
+
+int ObExprBenchmark::collect_exprs(common::ObIArray<ObExpr *> &exprs, const ObExpr &root_expr, ObEvalCtx &ctx)
+{
+  int ret = OB_SUCCESS;
+  for (int64_t i = 0; OB_SUCC(ret) && i < root_expr.arg_cnt_; ++i) {
+    ObEvalInfo &eval_flag = root_expr.args_[i]->get_eval_info(ctx);
+    if (!eval_flag.evaluated_) {
+      OZ(exprs.push_back(root_expr.args_[i]));
+      OZ(SMART_CALL(collect_exprs(exprs, *root_expr.args_[i], ctx)));
+    }
+  }
+  return ret;
+}
+
+void ObExprBenchmark::clear_all_flags(common::ObIArray<ObExpr *> &exprs, ObEvalCtx &ctx)
+{
+  for (int64_t i = 0; i < exprs.count(); ++i) {
+    ObEvalInfo &eval_flag = exprs.at(i)->get_eval_info(ctx);
+    eval_flag.clear_evaluated_flag();
+  }
+}
+
+}  // end namespace sql
+}  // end namespace oceanbase