Changeset 239969 in webkit for trunk/Source/JavaScriptCore/jsc.cpp

Timestamp:

Jan 14, 2019, 7:01:31 PM (6 years ago)

Author:

[email protected]

Message:

Add option to JSC to dump memory footprint on script completion
​https://bugs.webkit.org/show_bug.cgi?id=193422

Reviewed by Mark Lam.

Added the --footprint option to dump peak and current memory usage. This uses the same
OS calls added in r2362362.

• jsc.cpp:

(printUsageStatement):
(CommandLine::parseArguments):
(jscmain):

File:

• trunk/Source/JavaScriptCore/jsc.cpp (modified) (4 diffs)

trunk/Source/JavaScriptCore/jsc.cpp

@@ -421 +421 @@
     bool m_treatWatchdogExceptionAsSuccess { false };
     bool m_alwaysDumpUncaughtException { false };
+    bool m_dumpMemoryFootprint { false };
     bool m_dumpSamplingProfilerData { false };
     bool m_enableRemoteDebugging { false };
@@ -2573 +2574 @@
     fprintf(stderr, "  --watchdog-exception-ok    Uncaught watchdog exceptions exit with success\n");
     fprintf(stderr, "  --dumpException            Dump uncaught exception text\n");
+    fprintf(stderr, "  --footprint                Dump memory footprint after done executing\n");
     fprintf(stderr, "  --options                  Dumps all JSC VM options and exits\n");
     fprintf(stderr, "  --dumpOptions              Dumps all non-default JSC VM options before continuing\n");
@@ -2718 +2720 @@
         if (!strcmp(arg, "--dumpException")) {
             m_alwaysDumpUncaughtException = true;
+            continue;
+        }
+
+        if (!strcmp(arg, "--footprint")) {
+            m_dumpMemoryFootprint = true;
             continue;
         }
@@ -2929 +2936 @@
     printSuperSamplerState();
 
+    if (options.m_dumpMemoryFootprint) {
+        MemoryFootprint footprint = MemoryFootprint::now();
+
+        printf("Memory Footprint:\n    Current Footprint: %llu\n    Peak Footprint: %llu\n", footprint.current, footprint.peak);
+    }
+
     return result;
 }