Allow Python notification of new object-file loadings.

* Makefile.in (SUBDIR_PYTHON_SRCS): Add py-newobjfilevent.c.
	(SUBDIR_PYTHON_OBS): Add py-newobjfileevent.o.
	Add build rule for this file.
	* python/py-event.h (emit_new_objfile_event): New prototype.
	(newobjfile): New Python event emitter.
	* python/py-evts.c (gdbpy_initialize_py_events): Add new_objfile to
	Python event registry.
	* python/py-inferior.c: Include objfiles.h
	(python_new_objfile): New function.
	(gdbpy_initialize_inferior): Add python_new_objfile to the new objfile
	observers.
	* python/py-newobjfileevent.c: New file.
	* python-internal.h (gdbpy_initialize_new_objfile_event): New
	prototype.
	* python/python.c (_initialize_python): Add
	gdbpy_initialize_new_objfile_event call.
	* NEWS: Add item for new Python event "gdb.newobjfile"

2011-10-06  Kevin Pouget  <kevin.pouget@st.com>

	Allow Python notification of new object-file loadings.
	* gdb.texinfo (Events In Python): Document `gdb.NewObjFileEvent'
	event type.

2011-10-06  Kevin Pouget  <kevin.pouget@st.com>

	Allow Python notification of new object-file loadings.
	* gdb.python/py-events.exp: Test newobjfile event.
	* gdb.python/py-events.py: Register newobjfile callback.
	* gdb.python/py-events.c: Add call to shared library
	* gdb.python/py-events-shlib.c: New file.

gdb/testsuite/gdb.python/py-events.c

@@ -16,6 +16,8 @@
    along with this program.  If not, see  <http://www.gnu.org/licenses/>.
 */
 
+extern void do_nothing (void);
+
 int second(){
   fork() ;
   return 12;
@@ -26,5 +28,6 @@ int first(){
 }
 
 int main (){
+  do_nothing();
   return first();
 }

gdb/testsuite/gdb.python/py-events.exp

@@ -19,23 +19,39 @@ if $tracelevel then {
 
 load_lib gdb-python.exp
 
+set libfile "py-events-shlib"
+set libsrc  $srcdir/$subdir/$libfile.c
+set lib_sl  $objdir/$subdir/$libfile.so
+set lib_opts  debug
+
 set testfile "py-events"
 set srcfile ${testfile}.c
 set binfile ${objdir}/${subdir}/${testfile}
+set exec_opts [list debug shlib=$lib_sl]
 set pyfile ${srcdir}/${subdir}/${testfile}.py
 
-if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
+if [get_compiler_info ${binfile}] {
     return -1
 }
 
+if { [gdb_compile_shlib $libsrc $lib_sl $lib_opts] != ""
+     || [gdb_compile $srcdir/$subdir/$srcfile $binfile executable $exec_opts] != ""} {
+    untested "Could not compile either $libsrc or $srcdir/$subdir/$srcfile."
+    return -1
+}
+
+# Start with a fresh gdb.
+clean_restart ${testfile}
+
 if { [skip_python_tests] } { continue }
 
 gdb_test_no_output "python execfile ('${pyfile}')" ""
 
-if ![runto_main ] then {
-    fail "Can't run to main"
-    return -1
-}
+gdb_test "Test_Newobj_Events" "New ObjectFile Event tester registered." "Register new objfile event handler"
+
+gdb_breakpoint "main" {temporary}
+
+gdb_test "run" ".*event type: new_objfile.*new objfile name.*" "New objfile notification"
 
 gdb_test_no_output "set detach-on-fork off" ""
 

gdb/testsuite/gdb.python/py-events.py

@@ -51,6 +51,14 @@ def continue_handler (event):
     if ( event.inferior_thread is not None) :
         print "thread num: %s" % (event.inferior_thread.num);
 
+def new_objfile_handler (event):
+    if (isinstance (event, gdb.NewObjFileEvent)):
+        print "event type: new_objfile"
+    if (event.new_objfile is not None):
+    	print "new objfile name: %s" % (event.new_objfile.filename)
+    else:
+        print "new objfile is None"
+
 class test_events (gdb.Command):
     """Test events."""
 
@@ -65,3 +73,15 @@ class test_events (gdb.Command):
         print "Event testers registered."
 
 test_events ()
+
+class test_newobj_events (gdb.Command):
+    """NewObj events."""
+
+    def __init__ (self):
+        gdb.Command.__init__ (self, "test_newobj_events", gdb.COMMAND_STACK)
+
+    def invoke (self, arg, from_tty):
+        gdb.events.new_objfile.connect (new_objfile_handler)
+        print "New ObjectFile Event tester registered."
+
+test_newobj_events ()