[system-analyzer] Process shared-library events

Add a new LogEntry for sharedlib PCs

Change-Id: I4f7fdca93a9905e41b73347df475dffcb84bcb89
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2959620
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75125}

tools/system-analyzer/index.mjs

@@ -8,6 +8,7 @@ import {State} from './app-model.mjs';
 import {ApiLogEntry} from './log/api.mjs';
 import {CodeLogEntry} from './log/code.mjs';
 import {DeoptLogEntry} from './log/code.mjs';
+import {SharedLibLogEntry} from './log/code.mjs';
 import {IcLogEntry} from './log/ic.mjs';
 import {LogEntry} from './log/log.mjs';
 import {MapLogEntry} from './log/map.mjs';
@@ -60,7 +61,7 @@ class App {
   static get allEventTypes() {
     return new Set([
       SourcePosition, MapLogEntry, IcLogEntry, ApiLogEntry, CodeLogEntry,
-      DeoptLogEntry, TickLogEntry
+      DeoptLogEntry, SharedLibLogEntry, TickLogEntry
     ]);
   }
 
@@ -109,6 +110,8 @@ class App {
         break;
       case TickLogEntry:
         break;
+      case SharedLibLogEntry:
+        break;
       case DeoptLogEntry:
         // TODO select map + code entries
         if (entry.fileSourcePosition) entries.push(entry.fileSourcePosition);
@@ -166,6 +169,8 @@ class App {
         return this.showCodeEntries(entries);
       case DeoptLogEntry:
         return this.showDeoptEntries(entries);
+      case SharedLibLogEntry:
+        return this.showSharedLibEntries(entries);
       case TickLogEntry:
         break;
       default:
@@ -186,6 +191,8 @@ class App {
     this._view.deoptList.selectedLogEntries = entries;
   }
 
+  showSharedLibEntries(entries) {}
+
   showCodeEntries(entries) {
     this._view.codePanel.selectedEntries = entries;
     this._view.codeList.selectedLogEntries = entries;
@@ -238,6 +245,8 @@ class App {
         return this.focusCodeLogEntry(entry);
       case DeoptLogEntry:
         return this.focusDeoptLogEntry(entry);
+      case SharedLibLogEntry:
+        return this.focusDeoptLogEntry(entry);
       case TickLogEntry:
         return this.focusTickLogEntry(entry);
       default:
@@ -266,6 +275,10 @@ class App {
     this._state.deoptLogEntry = entry;
   }
 
+  focusSharedLibLogEntry(entry) {
+    // no-op.
+  }
+
   focusApiLogEntry(entry) {
     this._state.apiLogEntry = entry;
     this._view.apiTrack.focusedEntry = entry;
@@ -294,6 +307,7 @@ class App {
       case ApiLogEntry:
       case CodeLogEntry:
       case DeoptLogEntry:
+      case SharedLibLogEntry:
       case TickLogEntry:
         content = content.toolTipDict;
         break;

tools/system-analyzer/log/code.mjs

@@ -98,3 +98,22 @@ export class CodeLogEntry extends LogEntry {
     ];
   }
 }
+
+export class SharedLibLogEntry extends LogEntry {
+  constructor(name) {
+    super('SHARED_LIB', 0);
+    this._name = name;
+  }
+
+  get name() {
+    return this._name;
+  }
+
+  toString() {
+    return `SharedLib`;
+  }
+
+  static get propertyNames() {
+    return ['name'];
+  }
+}

tools/system-analyzer/processor.mjs

@@ -6,7 +6,7 @@ import {LogReader, parseString, parseVarArgs} from '../logreader.mjs';
 import {Profile} from '../profile.mjs';
 
 import {ApiLogEntry} from './log/api.mjs';
-import {CodeLogEntry, DeoptLogEntry} from './log/code.mjs';
+import {CodeLogEntry, DeoptLogEntry, SharedLibLogEntry} from './log/code.mjs';
 import {IcLogEntry} from './log/ic.mjs';
 import {Edge, MapLogEntry} from './log/map.mjs';
 import {TickLogEntry} from './log/tick.mjs';
@@ -43,6 +43,10 @@ export class Processor extends LogReader {
         ],
         processor: this.processV8Version
       },
+      'shared-library': {
+        parsers: [parseString, parseInt, parseInt, parseInt],
+        processor: this.processSharedLibrary
+      },
       'code-creation': {
         parsers: [
           parseString, parseInt, parseInt, parseInt, parseInt, parseString,
@@ -215,6 +219,11 @@ export class Processor extends LogReader {
     }
   }
 
+  processSharedLibrary(name, start, end, aslr_slide) {
+    const entry = this._profile.addLibrary(name, start, end);
+    entry.logEntry = new SharedLibLogEntry(name);
+  }
+
   processCodeCreation(type, kind, timestamp, start, size, name, maybe_func) {
     this._lastTimestamp = timestamp;
     let entry;