4e177d3b74
Add a switch for perfschema and disable it by default. You can enable perfschema by set tidb-server flag.
51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
// Copyright 2016 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package perfschema
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import (
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/ast"
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"github.com/pingcap/tidb/util/testleak"
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"github.com/pingcap/tidb/util/types"
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)
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type testStatementSuit struct {
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}
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var _ = Suite(&testStatementSuit{})
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func (p *testStatementSuit) TestUninitPS(c *C) {
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defer testleak.AfterTest(c)()
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// Run init()
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ps := &perfSchema{}
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// ps is uninitialized, all mTables are missing.
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// This may happen at the bootstrap stage.
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// So we must make sure the following actions are safe.
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err := ps.updateEventsStmtsCurrent(0, []types.Datum{})
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c.Assert(err, IsNil)
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err = ps.appendEventsStmtsHistory([]types.Datum{})
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c.Assert(err, IsNil)
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}
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func (p *testStatementSuit) TestDisablePS(c *C) {
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defer testleak.AfterTest(c)()
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ps, err := NewPerfHandle()
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c.Assert(err, IsNil)
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s := ps.StartStatement("select * from t", uint64(1), CallerNameSessionExecute, &ast.SelectStmt{})
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c.Assert(s, IsNil)
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EnablePerfSchema()
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s = ps.StartStatement("select * from t", uint64(1), CallerNameSessionExecute, &ast.SelectStmt{})
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c.Assert(s, NotNil)
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}
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