./src/os/linux/vm/os_linux.cpp

rev 1518 : Added check for -XX:StackShadowPages configuration option.

*** 3843,3852 ****
--- 3843,3857 ----
  // this is called _after_ the global arguments have been parsed
  jint os::init_2(void)
  {
    Linux::fast_thread_clock_init();
  
+   if (StackShadowPages <= 0) {
+     tty->print_cr("\nThe -XX:StackShadowPages parameter must be set to positive value!");
+     return JNI_ERR;
+   }
+ 
    // Allocate a single page and mark it as readable for safepoint polling
    address polling_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
    guarantee( polling_page != MAP_FAILED, "os::init_2: failed to allocate polling page" );
  
    os::set_polling_page( polling_page );