[Lldb-commits] [lldb] r227421 - If lldb is being built with ASAN instrumentation, have lldb

[Jason Molenda]

Author: jmolenda
Date: Thu Jan 29 00:28:36 2015
New Revision: 227421

URL: http://llvm.org/viewvc/llvm-project?rev=227421&view=rev
Log:
If lldb is being built with ASAN instrumentation, have lldb
create its own threads with 8MB additional maximum stack size.
Extra room is needed for the bookkeeping needed for this 
instrumentation.

Modified:
    lldb/trunk/source/Host/common/ThreadLauncher.cpp

Modified: lldb/trunk/source/Host/common/ThreadLauncher.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Host/common/ThreadLauncher.cpp?rev=227421&r1=227420&r2=227421&view=diff
==============================================================================
--- lldb/trunk/source/Host/common/ThreadLauncher.cpp (original)
+++ lldb/trunk/source/Host/common/ThreadLauncher.cpp Thu Jan 29 00:28:36 2015
@@ -38,6 +38,16 @@ ThreadLauncher::LaunchThread(llvm::Strin
         error.SetError(::GetLastError(), eErrorTypeWin32);
 #else
 
+
+    // ASAN instrumentation adds a lot of bookkeeping overhead on stack frames.
+#if __has_feature(address_sanitizer)
+    const size_t eight_megabytes = 8 * 1024 * 1024;
+    if (min_stack_byte_size < eight_megabytes)
+    {
+        min_stack_byte_size += eight_megabytes;
+    }
+#endif
+
     pthread_attr_t *thread_attr_ptr = NULL;
     pthread_attr_t thread_attr;
     bool destroy_attr = false;