[nemiver] Don't die when the loaded program isn't found

[Dodji Seketeli <dodji src gnome org>]

commit 61a4f3bbe51d82d5dc37cd0648c930510516bca1
Author: Dodji Seketeli <dodji seketeli org>
Date:   Sun Oct 3 19:48:33 2010 +0200

    Don't die when the loaded program isn't found
    
    	* src/dbgengine/nmv-i-debugger.h (IDebugger::load_program): Return
    	a boolean now.
    	* src/dbgengine/nmv-gdb-engine.h (GDBEngine::load_program):
    	Likewise.
    	* src/dbgengine/nmv-gdb-engine.cc (GDBEngine::load_program):
    	Return true upon successful completion, false otherwise. This is
    	now better than just throwing an exception at this point.
    	* src/persp/dbgperspective/nmv-dbg-perspective.cc
    	(DBGPerspective::execute_program): Display an error message when
    	we fail to load the program, instead of just passing up an
    	exception.
    	(DBGPerspective::connect_to_remote_target): Likewise.

 src/dbgengine/nmv-gdb-engine.cc                 |   16 +++++++----
 src/dbgengine/nmv-gdb-engine.h                  |    4 +-
 src/dbgengine/nmv-i-debugger.h                  |    4 +-
 src/persp/dbgperspective/nmv-dbg-perspective.cc |   31 +++++++++++++++++++---
 4 files changed, 40 insertions(+), 15 deletions(-)
---
diff --git a/src/dbgengine/nmv-gdb-engine.cc b/src/dbgengine/nmv-gdb-engine.cc
index 0d5ad1a..9c30159 100644
--- a/src/dbgengine/nmv-gdb-engine.cc
+++ b/src/dbgengine/nmv-gdb-engine.cc
@@ -2643,7 +2643,7 @@ GDBEngine::~GDBEngine ()
     LOG_D ("delete", "destructor-domain");
 }
 
-void
+bool
 GDBEngine::load_program (const UString &a_prog,
                          const vector<UString> &a_args,
                          const UString &a_working_dir)
@@ -2652,10 +2652,11 @@ GDBEngine::load_program (const UString &a_prog,
 
     vector<UString> search_paths;
     UString tty_path;
-    load_program (a_prog, a_args, a_working_dir, search_paths, tty_path);
+    return load_program (a_prog, a_args, a_working_dir,
+                         search_paths, tty_path);
 }
 
-void
+bool
 GDBEngine::load_program (const UString &a_prog,
                          const vector<UString> &a_argv,
                          const UString &working_dir,
@@ -2669,9 +2670,11 @@ GDBEngine::load_program (const UString &a_prog,
 
     if (!m_priv->is_gdb_running ()) {
         vector<UString> gdb_opts;
-        THROW_IF_FAIL (m_priv->launch_gdb_and_set_args
-                                    (working_dir, a_source_search_dirs, 
-                                     a_prog, a_argv, gdb_opts));
+        if (m_priv->launch_gdb_and_set_args (working_dir,
+                                             a_source_search_dirs, 
+                                             a_prog, a_argv,
+                                             gdb_opts) == false)
+            return false;
 
         Command command;
 
@@ -2711,6 +2714,7 @@ GDBEngine::load_program (const UString &a_prog,
         }
     }
     set_tty_path (a_tty_path);
+    return true;
 }
 
 void
diff --git a/src/dbgengine/nmv-gdb-engine.h b/src/dbgengine/nmv-gdb-engine.h
index 6dadbd4..5a5c253 100644
--- a/src/dbgengine/nmv-gdb-engine.h
+++ b/src/dbgengine/nmv-gdb-engine.h
@@ -244,11 +244,11 @@ public:
                                  const UString &a_value);
     void set_solib_prefix_path (const UString &a_name);
 
-    void load_program (const UString &a_prog,
+    bool load_program (const UString &a_prog,
                        const vector<UString> &a_args,
                        const UString &a_working_dir);
 
-    void load_program (const UString &a_prog,
+    bool load_program (const UString &a_prog,
                        const vector<UString> &a_argv,
                        const UString &working_dir,
                        const vector<UString> &a_source_search_dirs,
diff --git a/src/dbgengine/nmv-i-debugger.h b/src/dbgengine/nmv-i-debugger.h
index 7aaf073..5d11e6b 100644
--- a/src/dbgengine/nmv-i-debugger.h
+++ b/src/dbgengine/nmv-i-debugger.h
@@ -1017,11 +1017,11 @@ public:
 
     virtual void set_solib_prefix_path (const UString &a_name) = 0;
 
-    virtual void load_program (const UString &a_prog,
+    virtual bool load_program (const UString &a_prog,
                                const vector<UString> &a_args,
                                const UString &a_working_dir) = 0;
 
-    virtual void load_program
+    virtual bool load_program
                 (const UString &a_prog,
                  const vector<UString> &a_argv,
                  const UString &working_dir,
diff --git a/src/persp/dbgperspective/nmv-dbg-perspective.cc b/src/persp/dbgperspective/nmv-dbg-perspective.cc
index 1cc5144..76b7cef 100644
--- a/src/persp/dbgperspective/nmv-dbg-perspective.cc
+++ b/src/persp/dbgperspective/nmv-dbg-perspective.cc
@@ -6192,9 +6192,18 @@ DBGPerspective::execute_program
 
     LOG_DD ("load program");
 
-    // now really load the inferior program (i.e: the one to be debugged)
-    dbg_engine->load_program (prog, a_args, a_cwd, source_search_dirs,
-                              get_terminal_name ());
+    // now really load the inferior program (i.e: the one to be
+    // debugged)
+
+    if (dbg_engine->load_program (prog, a_args, a_cwd,
+                                  source_search_dirs,
+                                  get_terminal_name ()) == false) {
+        UString message;
+        message.printf (_("Could not load program: %s"),
+                        prog.c_str ());
+        display_error (message);
+        return;
+    }
 
     m_priv->debugger_engine_alive = true;
 
@@ -6319,7 +6328,13 @@ DBGPerspective::connect_to_remote_target (const UString &a_server_address,
     save_current_session ();
     LOG_DD ("executable path: '" <<  a_prog_path << "'");
     vector<UString> args;
-    debugger ()->load_program (a_prog_path , args, ".");
+    if (debugger ()->load_program (a_prog_path , args, ".") == false) {
+        UString message;
+        message.printf (_("Could not load program: %s"),
+                        a_prog_path.c_str ());
+        display_error (message);
+        return;
+    }
     LOG_DD ("solib prefix path: '" <<  a_solib_prefix << "'");
     debugger ()->set_solib_prefix_path (a_solib_prefix);
     debugger ()->attach_to_remote_target (a_server_address,
@@ -6337,7 +6352,13 @@ DBGPerspective::connect_to_remote_target (const UString &a_serial_line,
     save_current_session ();
     LOG_DD ("executable path: '" <<  a_prog_path << "'");
     vector<UString> args;
-    debugger ()->load_program (a_prog_path , args, ".");
+    if (debugger ()->load_program (a_prog_path , args, ".") == false) {
+        UString message;
+        message.printf (_("Could not load program: %s"),
+                        a_prog_path.c_str ());
+        display_error (message);
+        return;
+    }
     LOG_DD ("solib prefix path: '" <<  a_solib_prefix << "'");
     debugger ()->set_solib_prefix_path (a_solib_prefix);
     debugger ()->attach_to_remote_target (a_serial_line);