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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include <signal.h>
      6 
      7 #include "base/at_exit.h"
      8 #include "base/bind.h"
      9 #include "base/command_line.h"
     10 #include "base/logging.h"
     11 #include "base/message_loop/message_loop.h"
     12 #include "base/run_loop.h"
     13 #include "base/threading/platform_thread.h"
     14 #include "base/time/time.h"
     15 #include "cloud_print/gcp20/prototype/gcp20_switches.h"
     16 #include "cloud_print/gcp20/prototype/printer.h"
     17 
     18 namespace {
     19 
     20 void StartPrinter(Printer* printer) {
     21   bool success = printer->Start();
     22   DCHECK(success);
     23 }
     24 
     25 base::RunLoop* g_runner = NULL;
     26 Printer* g_printer = NULL;
     27 base::MessageLoop* g_message_loop;
     28 
     29 void StopLoop() {
     30   // Always do after printer.Stop() to make sure XMPP will
     31   // be disabled fully before |Quit| will be called
     32   // (XMPP disables itself via MessageLoop call).
     33   g_message_loop->PostTask(FROM_HERE, g_runner->QuitClosure());
     34   g_message_loop = NULL;
     35   g_runner = NULL;
     36 }
     37 
     38 void OnAbort(int val) {
     39   if (g_printer) {
     40     g_message_loop->PostTask(
     41         FROM_HERE,
     42         base::Bind(&Printer::Stop, base::Unretained(g_printer)));
     43     g_message_loop->PostTask(FROM_HERE, base::Bind(&StopLoop));
     44     g_printer = NULL;
     45   }
     46 }
     47 
     48 }  // namespace
     49 
     50 int main(int argc, char* argv[]) {
     51   base::AtExitManager at_exit;
     52   Printer printer;
     53   CommandLine::Init(argc, argv);
     54 
     55   logging::LoggingSettings settings;
     56   settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
     57   logging::InitLogging(settings);
     58 
     59   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kHelp) ||
     60       CommandLine::ForCurrentProcess()->HasSwitch(switches::kHelpShort)) {
     61     switches::PrintUsage();
     62     return 0;
     63   }
     64 
     65   signal(SIGINT, OnAbort);  // Handle Ctrl+C signal.
     66 
     67   base::MessageLoopForIO loop;
     68   g_message_loop = &loop;
     69   g_message_loop->PostTask(FROM_HERE, base::Bind(&StartPrinter, &printer));
     70   base::RunLoop runner;
     71   g_printer = &printer;
     72   g_runner = &runner;
     73   runner.Run();
     74 
     75   return 0;
     76 }
     77 
     78