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- // $Id: AgentM.C,v 1.10 1998/03/25 12:42:10 zeller Exp $
- // Agent Manager
-
- // Copyright (C) 1995 Technische Universitaet Braunschweig, Germany.
- // Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
- //
- // This file is part of DDD.
- //
- // DDD is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public
- // License as published by the Free Software Foundation; either
- // version 2 of the License, or (at your option) any later version.
- //
- // DDD is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- // See the GNU General Public License for more details.
- //
- // You should have received a copy of the GNU General Public
- // License along with DDD -- see the file COPYING.
- // If not, write to the Free Software Foundation, Inc.,
- // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- //
- // DDD is the data display debugger.
- // For details, see the DDD World-Wide-Web page,
- // `http://www.cs.tu-bs.de/softech/ddd/',
- // or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
-
- char AgentM_rcsid[] =
- "$Id: AgentM.C,v 1.10 1998/03/25 12:42:10 zeller Exp $";
-
- #ifdef __GNUG__
- #pragma implementation
- #endif
-
-
- #include "AgentM.h"
- #include "Agent.h"
- #include "SignalB.h"
- #include "config.h"
-
- extern "C" {
- #include <unistd.h>
- #include <sys/types.h>
- #include <sys/wait.h>
- }
-
- DEFINE_TYPE_INFO_0(AgentManager)
-
- #if 0
- #include "SignalC.h"
-
- // Make sure to call all destructors, even when a signal comes
- static SignalCleanup hasta_la_vista_you_filthy_agents;
- #endif
-
-
- // Add an agent
- void AgentManager::operator += (Agent *key)
- {
- for (Agent *c = first; c != 0; c = c->next)
- if (c == key)
- return;
-
- SignalBlocker sb(SIGCHLD);
-
- key->next = first;
- first = key;
- }
-
- // Remove an agent
- void AgentManager::operator -= (Agent *key)
- {
- Agent *prev = 0;
- for (Agent *c = first; c != 0; c = c->next)
- {
- if (c == key)
- {
- SignalBlocker sb(SIGCHLD);
-
- if (prev == 0)
- first = c->next;
- else
- prev->next = c->next;
- }
- else
- {
- prev = c;
- }
- }
- }
-
-
- // Search an agent
- Agent *AgentManager::search(int pid)
- {
- for (Agent *c = first; c != 0; c = c->next)
- if (pid == c->pid())
- return c;
-
- return 0;
- }
-
- // Commit all pending changes
- void AgentManager::commit()
- {
- for (Agent *c = first; c != 0; c = c->next)
- c->commit();
- }
-
- // Agent Manager Destructor: called at the end of the show
- AgentManager::~AgentManager()
- {
- // Terminate using low-level functions
- for (Agent *c = first; c != 0; c = c->next)
- c->terminate(true);
- }
-
- // Process status change
- bool AgentManager::childStatusChange()
- {
- bool gotit = false;
-
- for (Agent *c = first; c != 0; c = c->next)
- {
- pid_t pid = c->pid();
- int status;
-
- if (pid > 0 && waitpid(pid, &status, WNOHANG) == pid)
- {
- c->callHandlers(_Died, (void *)status);
- gotit = true;
- }
- }
-
- return gotit;
- }
-