/* a fast and simple context switching library */
-/* Copyright (c) 2009-2014. The SimGrid Team.
+/* Copyright (c) 2009-2015. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
#define _aligned_free __mingw_aligned_free
#endif //MINGW
-
+#if defined(_XBT_WIN32)
+#include <malloc.h>
+#endif
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
/* use raw contexts */
SIMIX_ctx_raw_factory_init(&simix_global->context_factory);
}
+#endif
+#ifdef HAVE_BOOST_CONTEXT
+ else if (!strcmp(smx_context_factory_name, "boost")) {
+ /* use Boost.Context */
+ SIMIX_ctx_boost_factory_init(&simix_global->context_factory);
+ }
#endif
else {
XBT_ERROR("Invalid context factory specified. Valid factories on this machine:");
{
void *stack;
+ /* FIXME: current code for stack overflow protection assumes that stacks are
+ * growing downward (PTH_STACKGROWTH == -1). Protected pages need to be put
+ * after the stack when PTH_STACKGROWTH == 1. */
+
if (smx_context_guard_size > 0 && !MC_is_active()) {
+
+#if defined(_XBT_WIN32) || (PTH_STACKGROWTH != -1)
+ static int warned_once = 0;
+ if (!warned_once) {
+ XBT_WARN("Stack overflow protection is known to be broken on your system. Either you're on Windows or PTH_STACKGROWTH != -1 (current value is %d).",
+ PTH_STACKGROWTH);
+ warned_once = 1;
+ }
+#endif
+
size_t size = smx_context_stack_size + smx_context_guard_size;
#ifdef HAVE_MC
/* Cannot use posix_memalign when HAVE_MC. Align stack by hand, and save the
char *alloc = xbt_malloc0(size + xbt_pagesize);
stack = alloc - ((uintptr_t)alloc & (xbt_pagesize - 1)) + xbt_pagesize;
*((void **)stack - 1) = alloc;
-#elif !defined(WIN32)
+#elif !defined(_XBT_WIN32)
if (posix_memalign(&stack, xbt_pagesize, size) != 0)
xbt_die("Failed to allocate stack.");
#else
- stack = _aligned_malloc(size, xbt_pagesize);
+ stack = _aligned_malloc(size, xbt_pagesize);
#endif
-#ifndef WIN32
+#ifndef _XBT_WIN32
if (mprotect(stack, smx_context_guard_size, PROT_NONE) == -1) {
XBT_WARN("Failed to protect stack: %s", strerror(errno));
/* That's not fatal, pursue anyway. */