llscan: initial

llnode.gyp

@@ -19,6 +19,7 @@
       "src/llnode.cc",
       "src/llv8.cc",
       "src/llv8-constants.cc",
+      "src/llscan.cc",
     ],
 
     "conditions": [

scripts/otool2segments.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+'''
+Created on 7 Apr 2016
+
+@author: hhellyer
+'''
+import sys,os,subprocess
+
+OTOOL_COMMAND = "otool -l {0}"
+
+# Grab the details of the memory ranges in the process from otool.
+def main():
+    if( len(sys.argv) < 2 ):
+        print("Usage " + sys.argv[0] + " <core_file>")
+        sys.exit(1)
+    core_file = sys.argv[1]
+
+    otool_proc = subprocess.Popen(
+        OTOOL_COMMAND.format(core_file), shell=True, bufsize=1,
+        stdin=subprocess.PIPE, stdout=subprocess.PIPE, close_fds=True)
+    (otool_stdin, otool_stdout) = (otool_proc.stdin, otool_proc.stdout)
+
+    reading_segment = False
+    vaddress = ""
+
+    for line in otool_stdout:
+        line = line.strip()
+        if not line.startswith("vmaddr") and not reading_segment:
+            continue
+        elif line.startswith("vmaddr"):
+            # Might need to filer out segments that have a file offset of 0
+            # (ie segments that aren't in the core!)
+            reading_segment = True
+            (name, vaddress) = line.split()
+        elif line.startswith("vmsize") and reading_segment:
+            reading_segment = False
+            memsize = line.split()[1]
+            # Simple format "address size", both in hex
+            print("{0} {1}".format(vaddress, memsize))
+            vaddress = ""
+
+if __name__ == '__main__':
+    main()

scripts/readelf2segments.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+'''
+Created on 7 Apr 2016
+
+@author: hhellyer
+'''
+import sys,os,subprocess
+
+READELF_COMMAND = "readelf --segments {0}"
+
+# Grab the details of the memory ranges in the process from readelf.
+def main():
+    if( len(sys.argv) < 2 ):
+        print("Usage " + sys.argv[0] + " <core_file>")
+        sys.exit(1)
+    core_file = sys.argv[1]
+
+    readelf_proc = subprocess.Popen(
+        READELF_COMMAND.format(core_file), shell=True, bufsize=1,
+        stdin=subprocess.PIPE, stdout=subprocess.PIPE, close_fds=True)
+    (readelf_stdin, readelf_stdout) = (readelf_proc.stdin, readelf_proc.stdout)
+
+    reading_segment = False
+    vaddress = ""
+
+    for line in readelf_stdout:
+        line = line.strip()
+        if not line.startswith("LOAD") and not reading_segment:
+            continue
+        elif line.startswith("LOAD"):
+            # Might need to filer out segments that have a file offset of 0
+            # (ie segments that aren't in the core!)
+            reading_segment = True
+            (type, offset, vaddress, paddr) = line.split()
+        elif reading_segment:
+            reading_segment = False
+            memsize = line.split()[1]
+            # Simple format "address size", both in hex
+            print("{0} {1}".format(vaddress, memsize))
+            vaddress = ""
+
+if __name__ == '__main__':
+    main()

src/llnode.cc

@@ -1,11 +1,12 @@
 #include <errno.h>
+#include <getopt.h>
 #include <stdlib.h>
 #include <string.h>
-#include <getopt.h>
 
 #include <lldb/API/SBExpressionOptions.h>
 
 #include "src/llnode.h"
+#include "src/llscan.h"
 #include "src/llv8.h"
 
 namespace llnode {
@@ -282,6 +283,24 @@ bool PluginInitialize(SBDebugger d) {
   interpreter.AddCommand("jssource", new llnode::ListCmd(),
                          "Alias for `v8 source list`");
 
+  v8.AddCommand("findjsobjects", new llnode::FindObjectsCmd(),
+                "List all object types and instance counts grouped by map and "
+                "sorted by instance count.\n"
+                "Requires `LLNODE_RANGESFILE` environment variable to be set "
+                "to a file containing memory ranges for the core file being "
+                "debugged.");
+
+  interpreter.AddCommand("findjsobjects", new llnode::FindObjectsCmd(),
+                         "Alias for `v8 findjsobjects`");
+
+  v8.AddCommand("findjsinstances", new llnode::FindInstancesCmd(),
+                "List all objects which share the specified map.\n"
+                "Accepts the same options as `v8 inspect`");
+
+  interpreter.AddCommand("findjsinstances", new llnode::FindInstancesCmd(),
+                         "List all objects which share the specified map.\n");
+
+
   return true;
 }