Skip to content

Commit

Permalink
prettify table
Browse files Browse the repository at this point in the history
  • Loading branch information
@agourlay
agourlay committed Mar 19, 2024
1 parent 853c37b commit 55620cb
Show file tree
Hide file tree
Showing 3 changed files with 155 additions and 98 deletions.
46 changes: 24 additions & 22 deletions README.md
View file
Original file line number Diff line number Diff line change
Expand Up @@ -55,28 +55,30 @@ Found a total of 2.53MiB of instances allocated on the heap.
Top 20 allocated classes:
Total size | Instances | Largest | Class name
----------------------------------------------------------------------------------
1.99MiB | 436 | 634.78KiB | int[]
197.11KiB | 1991 | 16.02KiB | char[]
85.25KiB | 443 | 8.02KiB | byte[]
47.38KiB | 1516 | 32.00bytes | java.lang.String
45.42KiB | 560 | 8.02KiB | java.lang.Object[]
15.26KiB | 126 | 124.00bytes | java.lang.reflect.Field
14.77KiB | 378 | 40.00bytes | java.util.LinkedList$Node
9.94KiB | 212 | 48.00bytes | java.util.HashMap$Node
8.91KiB | 190 | 48.00bytes | java.util.LinkedList
8.42KiB | 98 | 88.00bytes | java.lang.ref.SoftReference
6.05KiB | 258 | 24.00bytes | java.lang.Integer
5.91KiB | 18 | 2.02KiB | java.util.HashMap$Node[]
5.86KiB | 150 | 40.00bytes | java.lang.StringBuilder
5.44KiB | 116 | 48.00bytes | java.util.Hashtable$Entry
5.05KiB | 38 | 136.00bytes | sun.util.locale.LocaleObjectCache$CacheEntry
5.00KiB | 40 | 128.00bytes | java.lang.ref.Finalizer
3.50KiB | 32 | 112.00bytes | java.net.URL
3.42KiB | 73 | 48.00bytes | java.io.File
3.17KiB | 12 | 776.00bytes | java.util.Hashtable$Entry[]
3.13KiB | 56 | 144.00bytes | java.lang.String[]
+------------+-----------+-------------+----------------------------------------------+
| Total size | Instances | Largest | Class name |
+------------+-----------+-------------+----------------------------------------------+
| 1.99MiB | 436 | 634.78KiB | int[] |
| 197.11KiB | 1991 | 16.02KiB | char[] |
| 85.25KiB | 443 | 8.02KiB | byte[] |
| 47.38KiB | 1516 | 32.00bytes | java.lang.String |
| 45.42KiB | 560 | 8.02KiB | java.lang.Object[] |
| 15.26KiB | 126 | 124.00bytes | java.lang.reflect.Field |
| 14.77KiB | 378 | 40.00bytes | java.util.LinkedList$Node |
| 9.94KiB | 212 | 48.00bytes | java.util.HashMap$Node |
| 8.91KiB | 190 | 48.00bytes | java.util.LinkedList |
| 8.42KiB | 98 | 88.00bytes | java.lang.ref.SoftReference |
| 6.05KiB | 258 | 24.00bytes | java.lang.Integer |
| 5.91KiB | 18 | 2.02KiB | java.util.HashMap$Node[] |
| 5.86KiB | 150 | 40.00bytes | java.lang.StringBuilder |
| 5.44KiB | 116 | 48.00bytes | java.util.Hashtable$Entry |
| 5.05KiB | 38 | 136.00bytes | sun.util.locale.LocaleObjectCache$CacheEntry |
| 5.00KiB | 40 | 128.00bytes | java.lang.ref.Finalizer |
| 3.50KiB | 32 | 112.00bytes | java.net.URL |
| 3.42KiB | 73 | 48.00bytes | java.io.File |
| 3.17KiB | 12 | 776.00bytes | java.util.Hashtable$Entry[] |
| 3.13KiB | 56 | 144.00bytes | java.lang.String[] |
+------------+-----------+-------------+----------------------------------------------+
```

## Installation
Expand Down
115 changes: 83 additions & 32 deletions src/result_recorder.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -597,45 +597,96 @@ impl ResultRecorder {
|r| r.3.to_string(),
class_name_header,
);
let class_name_len = class_name_header.chars().count() + class_name_padding.chars().count();

// headers with padding
let total_size_header = format!(" {}{} ", total_size_header_padding, total_size_header);
let instance_count_header = format!(
" {}{} ",
instance_count_header_padding, instance_count_header
);
let largest_instance_header =
format!(" {}{} ", largest_instance_padding, largest_instance_header,);
let class_name_header = format!(" {}{} ", class_name_header, class_name_padding);

// render line before header
Self::render_table_vertical_line(
analysis,
&total_size_header,
&instance_count_header,
&largest_instance_header,
&class_name_header,
);

// render header
let header = format!(
"{}{} | {}{} | {}{} | {}{}\n",
total_size_header_padding,
total_size_header,
instance_count_header_padding,
instance_count_header,
largest_instance_padding,
largest_instance_header,
class_name_header,
class_name_padding
"|{}|{}|{}|{}|",
total_size_header, instance_count_header, largest_instance_header, class_name_header
);
let header_len = header.chars().count();
analysis.push_str(&header);
analysis.push_str(&("-".repeat(header_len)));
analysis.push('\n');

rows_formatted.into_iter().for_each(
|(allocation_size, count, largest_allocation_size, class_name)| {
let padding_size_str =
ResultRecorder::column_padding(&allocation_size, total_size_len);
let padding_count_str =
ResultRecorder::column_padding(&count.to_string(), instance_len);
let padding_largest_size_str =
ResultRecorder::column_padding(&largest_allocation_size, largest_len);

let row = format!(
"{}{} | {}{} | {}{} | {}\n",
padding_size_str,
allocation_size,
padding_count_str,
count,
padding_largest_size_str,
largest_allocation_size,
class_name
);
analysis.push_str(&row);
},
// render line after header
Self::render_table_vertical_line(
analysis,
&total_size_header,
&instance_count_header,
&largest_instance_header,
&class_name_header,
);

// render rows
for (allocation_size, count, largest_allocation_size, class_name) in rows_formatted {
let padding_size_str = ResultRecorder::column_padding(&allocation_size, total_size_len);
let padding_count_str =
ResultRecorder::column_padding(&count.to_string(), instance_len);
let padding_largest_size_str =
ResultRecorder::column_padding(&largest_allocation_size, largest_len);
let padding_largest_class_name_str =
ResultRecorder::column_padding(class_name, class_name_len);

let row = format!(
"| {}{} | {}{} | {}{} | {}{} |",
padding_size_str,
allocation_size,
padding_count_str,
count,
padding_largest_size_str,
largest_allocation_size,
class_name,
padding_largest_class_name_str
);
analysis.push_str(&row);
analysis.push('\n');
}

// render line after rows
Self::render_table_vertical_line(
analysis,
&total_size_header,
&instance_count_header,
&largest_instance_header,
&class_name_header,
);
}

pub fn render_table_vertical_line(
analysis: &mut String,
total_size_header: &str,
instance_count_header: &str,
largest_instance_header: &str,
class_name_header: &str,
) {
analysis.push('+');
analysis.push_str(&("-".repeat(total_size_header.chars().count())));
analysis.push('+');
analysis.push_str(&("-".repeat(instance_count_header.chars().count())));
analysis.push('+');
analysis.push_str(&("-".repeat(largest_instance_header.chars().count())));
analysis.push('+');
analysis.push_str(&("-".repeat(class_name_header.chars().count())));
analysis.push('+');
analysis.push('\n');
}

fn padding_for_header<F>(
Expand Down
92 changes: 48 additions & 44 deletions test-heap-dumps/hprof-64-result.txt
View file
Original file line number Diff line number Diff line change
Expand Up @@ -67,50 +67,54 @@ Found a total of 2.53MiB of instances allocated on the heap.

Top 20 allocated classes:

Total size | Instances | Largest | Class name
------------------------------------------------------------------------------------
1.99MiB | 436 | 634.78KiB | int[]
197.11KiB | 1991 | 16.02KiB | char[]
85.25KiB | 443 | 8.02KiB | byte[]
47.38KiB | 1516 | 32.00bytes | java.lang.String
45.42KiB | 560 | 8.02KiB | java.lang.Object[]
15.26KiB | 126 | 124.00bytes | java.lang.reflect.Field
14.77KiB | 378 | 40.00bytes | java.util.LinkedList$Node
9.94KiB | 212 | 48.00bytes | java.util.HashMap$Node
8.91KiB | 190 | 48.00bytes | java.util.LinkedList
8.42KiB | 98 | 88.00bytes | java.lang.ref.SoftReference
6.05KiB | 258 | 24.00bytes | java.lang.Integer
5.91KiB | 18 | 2.02KiB | java.util.HashMap$Node[]
5.86KiB | 150 | 40.00bytes | java.lang.StringBuilder
5.44KiB | 116 | 48.00bytes | java.util.Hashtable$Entry
5.05KiB | 38 | 136.00bytes | sun.util.locale.LocaleObjectCache$CacheEntry
5.00KiB | 40 | 128.00bytes | java.lang.ref.Finalizer
3.50KiB | 32 | 112.00bytes | java.net.URL
3.42KiB | 73 | 48.00bytes | java.io.File
3.17KiB | 12 | 776.00bytes | java.util.Hashtable$Entry[]
3.13KiB | 56 | 144.00bytes | java.lang.String[]
+------------+-----------+-------------+----------------------------------------------+
| Total size | Instances | Largest | Class name |
+------------+-----------+-------------+----------------------------------------------+
| 1.99MiB | 436 | 634.78KiB | int[] |
| 197.11KiB | 1991 | 16.02KiB | char[] |
| 85.25KiB | 443 | 8.02KiB | byte[] |
| 47.38KiB | 1516 | 32.00bytes | java.lang.String |
| 45.42KiB | 560 | 8.02KiB | java.lang.Object[] |
| 15.26KiB | 126 | 124.00bytes | java.lang.reflect.Field |
| 14.77KiB | 378 | 40.00bytes | java.util.LinkedList$Node |
| 9.94KiB | 212 | 48.00bytes | java.util.HashMap$Node |
| 8.91KiB | 190 | 48.00bytes | java.util.LinkedList |
| 8.42KiB | 98 | 88.00bytes | java.lang.ref.SoftReference |
| 6.05KiB | 258 | 24.00bytes | java.lang.Integer |
| 5.91KiB | 18 | 2.02KiB | java.util.HashMap$Node[] |
| 5.86KiB | 150 | 40.00bytes | java.lang.StringBuilder |
| 5.44KiB | 116 | 48.00bytes | java.util.Hashtable$Entry |
| 5.05KiB | 38 | 136.00bytes | sun.util.locale.LocaleObjectCache$CacheEntry |
| 5.00KiB | 40 | 128.00bytes | java.lang.ref.Finalizer |
| 3.50KiB | 32 | 112.00bytes | java.net.URL |
| 3.42KiB | 73 | 48.00bytes | java.io.File |
| 3.17KiB | 12 | 776.00bytes | java.util.Hashtable$Entry[] |
| 3.13KiB | 56 | 144.00bytes | java.lang.String[] |
+------------+-----------+-------------+----------------------------------------------+

Top 20 largest instances:

Total size | Instances | Largest | Class name
--------------------------------------------------------------------------------------
1.99MiB | 436 | 634.78KiB | int[]
197.11KiB | 1991 | 16.02KiB | char[]
85.25KiB | 443 | 8.02KiB | byte[]
45.42KiB | 560 | 8.02KiB | java.lang.Object[]
5.91KiB | 18 | 2.02KiB | java.util.HashMap$Node[]
2.05KiB | 2 | 2.02KiB | java.lang.invoke.MethodHandle[]
2.02KiB | 1 | 2.02KiB | java.lang.Integer[]
3.17KiB | 12 | 776.00bytes | java.util.Hashtable$Entry[]
462.00bytes | 1 | 462.00bytes | sun.misc.Launcher$AppClassLoader
454.00bytes | 1 | 454.00bytes | sun.misc.Launcher$ExtClassLoader
680.00bytes | 2 | 340.00bytes | simple.Producer
680.00bytes | 2 | 340.00bytes | simple.Consumer
2.30KiB | 7 | 336.00bytes | java.util.jar.JarFile$JarFileEntry
334.00bytes | 1 | 334.00bytes | java.lang.ref.Finalizer$FinalizerThread
332.00bytes | 1 | 332.00bytes | java.lang.ref.Reference$ReferenceHandler
1.01KiB | 9 | 312.00bytes | java.lang.reflect.Field[]
1.48KiB | 7 | 272.00bytes | java.util.concurrent.ConcurrentHashMap$Node[]
236.00bytes | 1 | 236.00bytes | sun.net.www.protocol.file.FileURLConnection
440.00bytes | 2 | 220.00bytes | java.io.ExpiringCache$1
432.00bytes | 2 | 216.00bytes | java.lang.NoSuchMethodError
+-------------+-----------+-------------+-----------------------------------------------+
| Total size | Instances | Largest | Class name |
+-------------+-----------+-------------+-----------------------------------------------+
| 1.99MiB | 436 | 634.78KiB | int[] |
| 197.11KiB | 1991 | 16.02KiB | char[] |
| 85.25KiB | 443 | 8.02KiB | byte[] |
| 45.42KiB | 560 | 8.02KiB | java.lang.Object[] |
| 5.91KiB | 18 | 2.02KiB | java.util.HashMap$Node[] |
| 2.05KiB | 2 | 2.02KiB | java.lang.invoke.MethodHandle[] |
| 2.02KiB | 1 | 2.02KiB | java.lang.Integer[] |
| 3.17KiB | 12 | 776.00bytes | java.util.Hashtable$Entry[] |
| 462.00bytes | 1 | 462.00bytes | sun.misc.Launcher$AppClassLoader |
| 454.00bytes | 1 | 454.00bytes | sun.misc.Launcher$ExtClassLoader |
| 680.00bytes | 2 | 340.00bytes | simple.Producer |
| 680.00bytes | 2 | 340.00bytes | simple.Consumer |
| 2.30KiB | 7 | 336.00bytes | java.util.jar.JarFile$JarFileEntry |
| 334.00bytes | 1 | 334.00bytes | java.lang.ref.Finalizer$FinalizerThread |
| 332.00bytes | 1 | 332.00bytes | java.lang.ref.Reference$ReferenceHandler |
| 1.01KiB | 9 | 312.00bytes | java.lang.reflect.Field[] |
| 1.48KiB | 7 | 272.00bytes | java.util.concurrent.ConcurrentHashMap$Node[] |
| 236.00bytes | 1 | 236.00bytes | sun.net.www.protocol.file.FileURLConnection |
| 440.00bytes | 2 | 220.00bytes | java.io.ExpiringCache$1 |
| 432.00bytes | 2 | 216.00bytes | java.lang.NoSuchMethodError |
+-------------+-----------+-------------+-----------------------------------------------+

0 comments on commit 55620cb

Please sign in to comment.