build/win32/crashinjectdll/crashinjectdll.cpp
author Ted Mielczarek <ted.mielczarek@gmail.com>
Fri, 16 Oct 2009 13:34:27 -0400
changeset 34284 3b932018ce6a0ee85d7e6b7ff9db23b558469967
child 35125 2a7fb310722ee6c6607053f21fb31341aebb9e3e
permissions -rw-r--r--
bug 501034 - add a Win32 helper app to crash a process, and make automation.py use it when the app hangs. r=Waldo

#include <stdio.h>
#include <Windows.h>

// make sure we only ever spawn one thread
DWORD tid = -1;

DWORD WINAPI CrashingThread(
  LPVOID lpParameter
)
{
  // not a very friendly DLL
  volatile int* x = (int *)0x0;
  *x = 1;
  return 0;
}

BOOL WINAPI DllMain(
  HANDLE hinstDLL, 
  DWORD dwReason, 
  LPVOID lpvReserved
)
{
  if (tid == -1)
    // we have to crash on another thread because LoadLibrary() will
    // catch memory access errors and return failure to the calling process
    CreateThread( 
                 NULL,                   // default security attributes
                 0,                      // use default stack size  
                 CrashingThread  ,       // thread function name
                 NULL,                   // argument to thread function 
                 0,                      // use default creation flags 
                 &tid);                  // returns the thread identifier 
  return TRUE;
}