mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-27 06:06:38 +00:00
49 lines
1.2 KiB
Markdown
49 lines
1.2 KiB
Markdown
|
# size - calculates variable's memory consumption at runtime
|
||
|
|
||
|
### Part of the [Transflow Project](http://transflow.ru/)
|
||
|
|
||
|
Sometimes you may need a tool to measure the size of object in your Go program at runtime. This package makes an attempt to do so. Package based on `binary.Size()` from Go standard library.
|
||
|
|
||
|
Features:
|
||
|
- supports non-fixed size variables and struct fields: `struct`, `int`, `slice`, `string`, `map`;
|
||
|
- supports complex types including structs with non-fixed size fields;
|
||
|
- supports all basic types (numbers, bool);
|
||
|
- supports `chan` and `interface`;
|
||
|
- supports pointers;
|
||
|
- implements infinite recursion detection (i.e. pointer inside struct field references to parent struct).
|
||
|
|
||
|
### Usage example
|
||
|
|
||
|
```
|
||
|
package main
|
||
|
|
||
|
import (
|
||
|
"fmt"
|
||
|
|
||
|
// Use latest tag.
|
||
|
"github.com/DmitriyVTitov/size"
|
||
|
)
|
||
|
|
||
|
func main() {
|
||
|
a := struct {
|
||
|
a int
|
||
|
b string
|
||
|
c bool
|
||
|
d int32
|
||
|
e []byte
|
||
|
f [3]int64
|
||
|
}{
|
||
|
a: 10, // 8 bytes
|
||
|
b: "Text", // 16 (string itself) + 4 = 20 bytes
|
||
|
c: true, // 1 byte
|
||
|
d: 25, // 4 bytes
|
||
|
e: []byte{'c', 'd', 'e'}, // 24 (slice itself) + 3 = 27 bytes
|
||
|
f: [3]int64{1, 2, 3}, // 3 * 8 = 24 bytes
|
||
|
} // 84 + 3 (padding) = 87 bytes
|
||
|
|
||
|
fmt.Println(size.Of(a))
|
||
|
}
|
||
|
|
||
|
// Output: 87
|
||
|
```
|