From ed195d35fc53499ceb1c23ada69659c7a23bccdc Mon Sep 17 00:00:00 2001
From: caremoli <caremoli>
Date: Tue, 26 Jun 2007 09:29:29 +0000
Subject: [PATCH] CCAR: add possibility to automatically launch a debugger
 attached to the container on SIGSEGV and not trapped exceptions. Only if
 DEBUGGER env variable is set to a shell to execute

---
 src/Container/Makefile.am          |  3 ++
 src/Container/SALOME_Container.cxx | 56 ++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/src/Container/Makefile.am b/src/Container/Makefile.am
index 4e7c0d619..d4b30879b 100644
--- a/src/Container/Makefile.am
+++ b/src/Container/Makefile.am
@@ -139,6 +139,9 @@ SALOME_Container_LDADD =\
 	$(COMMON_LIBS) \
 	../Basics/libSALOMEBasics.la
 
+SALOME_Container_LDFLAGS  =\
+-Xlinker -export-dynamic
+
 SALOME_ContainerManagerServer_SOURCES =\
 	SALOME_ContainerManagerServer.cxx 
 
diff --git a/src/Container/SALOME_Container.cxx b/src/Container/SALOME_Container.cxx
index ab3e599a7..9a8cf992b 100644
--- a/src/Container/SALOME_Container.cxx
+++ b/src/Container/SALOME_Container.cxx
@@ -62,12 +62,68 @@ using namespace std;
 
 extern "C" void HandleServerSideSignals(CORBA::ORB_ptr theORB);
 
+#include <stdexcept>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+typedef void (*sighandler_t)(int);
+sighandler_t setsig(int sig, sighandler_t handler)
+{
+  struct sigaction context, ocontext;
+  context.sa_handler = handler;
+  sigemptyset(&context.sa_mask);
+  context.sa_flags = 0;
+  if (sigaction(sig, &context, &ocontext) == -1)
+    return SIG_ERR;
+  return ocontext.sa_handler;
+}
+
+void AttachDebugger()
+{
+  if(getenv ("DEBUGGER"))
+    {
+      std::stringstream exec;
+      exec << "$DEBUGGER SALOME_Container " << getpid() << "&";
+      std::cerr << exec.str() << std::endl;
+      system(exec.str().c_str());
+      while(1);
+    }
+}
+
+void Handler(int theSigId)
+{
+  std::cerr << "SIGSEGV: "  << std::endl;
+  AttachDebugger();
+  //to exit or not to exit
+  exit(1);
+}
+
+void terminateHandler(void)
+{
+  std::cerr << "Terminate: not managed exception !"  << std::endl;
+  AttachDebugger();
+}
+
+void unexpectedHandler(void)
+{
+  std::cerr << "Unexpected: unexpected exception !"  << std::endl;
+  AttachDebugger();
+}
+
 int main(int argc, char* argv[])
 {
 #ifdef HAVE_MPI2
   MPI_Init(&argc,&argv);
 #endif
 
+  if(getenv ("DEBUGGER"))
+    {
+      setsig(SIGSEGV,&Handler);
+      set_terminate(&terminateHandler);
+      set_unexpected(&unexpectedHandler);
+    }
+
   // Initialise the ORB.
   //SRN: BugID: IPAL9541, it's necessary to set a size of one message to be at least 100Mb
   //CORBA::ORB_var orb = CORBA::ORB_init( argc , argv ) ;
-- 
2.39.2