add globalexit API support.

it is not fully functional yet, but initial version is good enough.
developed by Igor, reviewed by miked

This commit was SVN r29430.

config/oshmem_configure_options.m4

@@ -141,6 +141,21 @@ esac
 
 AC_SUBST([OSHMEM_CFLAGS])
 
+OPAL_CHECK_PMI([pmi_oshmem], [pmi_oshmem_happy="yes"], [pmi_oshmem_happy="no"])
+
+AC_SUBST([pmi_oshmem_CPPFLAGS])
+AC_SUBST([pmi_oshmem_LDFLAGS])
+AC_SUBST([pmi_oshmem_LIBS])
+ 
+AS_IF(
+    [test "$pmi_oshmem_happy" = "yes"],
+    [
+	OSHMEM_CFLAGS="$OSHMEM_CFLAGS $pmi_oshmem_CPPFLAGS"
+	OSHMEM_LDFLAGS="$OSHMEM_LDFLAGS $pmi_oshmem_LDFLAGS $pmi_oshmem_LIBS"
+    ])
+
+AC_SUBST([OSHMEM_CFLAGS])
+AC_SUBST([OSHMEM_LDFLAGS])
 
 
 OMPI_CHECK_OPENFABRICS([oshmem_verbs],

oshmem/include/shmem.h.in

@@ -380,6 +380,7 @@ OSHMEM_DECLSPEC  int shmem_my_pe(void);
 
 OSHMEM_DECLSPEC  void shmem_put(void *target, const void *source, size_t len, int pe);
 OSHMEM_DECLSPEC  void shmem_get(void *target, const void *source, size_t len, int pe);
+OSHMEM_DECLSPEC  void globalexit(int status);
 
 
 #if defined(c_plusplus) || defined(__cplusplus)

oshmem/runtime/oshmem_shmem_init.c

@@ -196,6 +196,21 @@ static void* shmem_opal_thread(void* argc)
 }
 #endif
 
+int inGlobalExit;
+
+static void sighandler__SIGUSR1(int signum)
+{
+    if (0 != inGlobalExit)
+    {
+	return;
+    }
+    _exit(0);
+}
+static void sighandler__SIGTERM(int signum)
+{
+    /* Do nothing. Just replace other unpredictalbe handlers with this one (e.g. mxm handler). */
+}
+
 int oshmem_shmem_init(int argc, char **argv, int requested, int *provided)
 {
     int ret = OSHMEM_SUCCESS;
@@ -225,7 +240,10 @@ int oshmem_shmem_init(int argc, char **argv, int requested, int *provided)
 #endif
         }
     }
-
+#ifdef SIGUSR1
+    signal(SIGUSR1,sighandler__SIGUSR1);
+    signal(SIGTERM,sighandler__SIGTERM);
+#endif
     return ret;
 }
 

oshmem/shmem/c/Makefile.am

@@ -53,7 +53,8 @@ SHMEM_API_SOURCES = \
 	shmem_clear_lock.c \
 	shmem_set_lock.c \
 	shmem_test_lock.c \
-	shmem_lock.c
+	shmem_lock.c \
+	globalexit.c
 
 
 AM_CFLAGS = $(OSHMEM_CFLAGS)

oshmem/shmem/c/globalexit.c

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2012      Mellanox Technologies, Inc.
+ *                         All rights reserved.
+ * $COPYRIGHT$
+ * 
+ * Additional copyrights may follow
+ * 
+ * $HEADER$
+ */
+#include "oshmem_config.h"
+
+#include "oshmem/include/shmem.h"
+#include "oshmem/runtime/runtime.h"
+
+#include "orte/mca/odls/odls_types.h"
+#include "orte/mca/errmgr/errmgr.h"
+#include "opal/dss/dss.h"
+#include "orte/mca/rml/rml.h"
+
+#if WANT_PMI_SUPPORT
+#include <pmi.h>
+#endif
+
+extern int inGlobalExit;
+
+void globalexit(int status)
+{
+    inGlobalExit++;
+
+    if ((ORTE_JOBID_INVALID != ORTE_PROC_MY_DAEMON->jobid) &&
+        (0 != ORTE_PROC_MY_DAEMON->jobid) )
+    {
+        orte_errmgr.abort(status, NULL);
+    }
+    else
+    {
+#if WANT_PMI_SUPPORT
+        PMI_Abort(status, NULL);
+#endif /* WANT_PMI_SUPPORT */
+        _exit(status);
+    }
+    
+    oshmem_shmem_aborted = true;
+    exit(status);
+}