# HG changeset patch
# User dbuck
# Date 1415270041 28800
# Node ID ef6b27d844cc0fa6724ca658cf0f70a6bf932e20
# Parent  3c87c13918fb5e4e918f55fc06faca0eb736951d
8058715: stability issues when being launched as an embedded JVM via JNI
Summary: Use mmap call without MAP_FIXED so we avoid corrupting already allocated memory
Reviewed-by: coleenp, dsimms

diff -r 3c87c13918fb -r ef6b27d844cc src/os_cpu/linux_x86/vm/os_linux_x86.cpp
--- a/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Thu Oct 30 13:03:30 2014 +0100
+++ b/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Thu Nov 06 02:34:01 2014 -0800
@@ -909,7 +909,7 @@
    */
   char* hint = (char*) (Linux::initial_thread_stack_bottom() -
                         ((StackYellowPages + StackRedPages + 1) * page_size));
-  char* codebuf = os::reserve_memory(page_size, hint);
+  char* codebuf = os::attempt_reserve_memory_at(page_size, hint);
   if ( (codebuf == NULL) || (!os::commit_memory(codebuf, page_size, true)) ) {
     return; // No matter, we tried, best effort.
   }