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authorTing-Wei Lan <tingwei.lan@cobinhood.com>2019-03-11 12:18:57 +0800
committerJhih-Ming Huang <jm.huang@cobinhood.com>2019-05-06 10:44:04 +0800
commit2c61a14511bb9d2f85b7c6621f5a177fdd241fc0 (patch)
treebf8f1aa56a145505c604e27ad3073bf8612aa98c
parentdae0bed2e0245020b6a8288adcf8cdb41bcbe45a (diff)
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core: vm: sqlvm: schema: drop pointers from slices
The number of tables, columns, indices are all limited to 256, so we don't have to do much memory copying during appending. Drop pointers from slices to save memory for storing pointers and possibly improve locality.
-rw-r--r--core/vm/sqlvm/schema/schema.go6
-rw-r--r--core/vm/sqlvm/schema/schema_test.go12
2 files changed, 9 insertions, 9 deletions
diff --git a/core/vm/sqlvm/schema/schema.go b/core/vm/sqlvm/schema/schema.go
index 76c843387..993843105 100644
--- a/core/vm/sqlvm/schema/schema.go
+++ b/core/vm/sqlvm/schema/schema.go
@@ -48,13 +48,13 @@ const (
)
// Schema defines sqlvm schema struct.
-type Schema []*Table
+type Schema []Table
// Table defiens sqlvm table struct.
type Table struct {
Name []byte
- Columns []*Column
- Indices []*Index
+ Columns []Column
+ Indices []Index
}
// Index defines sqlvm index struct.
diff --git a/core/vm/sqlvm/schema/schema_test.go b/core/vm/sqlvm/schema/schema_test.go
index 5d252ef85..8a9044857 100644
--- a/core/vm/sqlvm/schema/schema_test.go
+++ b/core/vm/sqlvm/schema/schema_test.go
@@ -65,9 +65,9 @@ func (s *SchemaTestSuite) TestEncodeAndDecodeColumn() {
func (s *SchemaTestSuite) TestEncodeAndDecodeSchema() {
schema := Schema{
- &Table{
+ Table{
Name: []byte("test"),
- Columns: []*Column{
+ Columns: []Column{
{
column: column{
Name: []byte("a"),
@@ -78,7 +78,7 @@ func (s *SchemaTestSuite) TestEncodeAndDecodeSchema() {
Default: true,
},
},
- Indices: []*Index{
+ Indices: []Index{
{
Name: []byte("idx"),
Attr: IndexAttrUnique,
@@ -86,7 +86,7 @@ func (s *SchemaTestSuite) TestEncodeAndDecodeSchema() {
},
},
},
- &Table{
+ Table{
Name: []byte("test2"),
},
}
@@ -111,13 +111,13 @@ func (s *SchemaTestSuite) TestEncodeAndDecodeSchema() {
for j := 0; j < len(table.Columns); j++ {
column := table.Columns[j]
column2 := table.Columns[j]
- s.Require().Equal(*column, *column2)
+ s.Require().Equal(column, column2)
}
for j := 0; j < len(table.Indices); j++ {
index := table.Indices[j]
index2 := table2.Indices[j]
- s.Require().Equal(*index, *index2)
+ s.Require().Equal(index, index2)
}
}
}