Electrolysis/Debugging: Difference between revisions

Electrolysis/Debugging (view source)

25 bytes added , 9 March 2016

→‎Debugging E10s: updated environment variables for debugging

284

edits

@@ Line 26: / Line 26: @@
 First, make sure you've got a DEBUG build. If that's the case, you're all set ! Just hit F5 in MSVC. You should see the program's console with the main process output in it.
-Now when the output stops updating, it means it's reached this code in nsEmbedFunctions.cpp&nbsp;:
+If you have the MOZ_DEBUG_CHILD_PROCESS environment variable set, when the child process launches it should invoke the JIT debugger. (Note: to debug both processes in the same MSVC instance, you can attach to the child process from your MSVC instance and then hit Cancel.)
-<pre>
+You can instead set an environment variable MOZ_DEBUG_CHILD_PAUSE, which will pause the child process for 10 seconds when it starts, giving you time to attach:
-  if (PR_GetEnv("MOZ_DEBUG_CHILD_PROCESS")) {
-#ifdef OS_POSIX
-      printf("\n\nCHILDCHILDCHILDCHILD\n  debug me @%d\n\n", getpid());
-      sleep(30);
-#elif defined(OS_WIN)
-      Sleep(30000);
-#endif
-  }
-</pre>
-You now have 30 seconds to hook up to the newly created child process. Do the following :
 *Hit CTRL-ALT-P to bring up the "attach to process" dialog
 *Double-click "plugin-container.exe" in the "Available Processes" listbox.