Install signal handler for SIGSEGV.

[simgrid.git] / src / simix / smx_context_thread.c

diff --git a/src/simix/smx_context_thread.c b/src/simix/smx_context_thread.c
index 060132a..ee35dfd 100644 (file)
--- a/src/simix/smx_context_thread.c
+++ b/src/simix/smx_context_thread.c
@@ -153,6 +153,13 @@ static void *smx_ctx_thread_wrapper(void *param)
 {
   smx_ctx_thread_t context = (smx_ctx_thread_t) param;
 
 {
   smx_ctx_thread_t context = (smx_ctx_thread_t) param;
 

+  /* Install alternate signal stack, for SIGSEGV handler. */
+  stack_t stack;
+  stack.ss_sp = sigsegv_stack;
+  stack.ss_size = sizeof sigsegv_stack;
+  stack.ss_flags = 0;
+  sigaltstack(&stack, NULL);
+

   /* Tell the maestro we are starting, and wait for its green light */
   xbt_os_sem_release(context->end);
   xbt_os_sem_acquire(context->begin);
   /* Tell the maestro we are starting, and wait for its green light */
   xbt_os_sem_release(context->end);
   xbt_os_sem_acquire(context->begin);