Terminate smoothly on CTRL-C.

[loba.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index fe584f725f6518347b6e4b096ff10198888bb8a0..76125e9db0b639a3d7e027b6b5ceb7c99d637c04 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -1,5 +1,7 @@
-#include <cstring>
+#include <cerrno>
+#include <cstring>              // strchr

 #include <iostream>
 #include <iostream>

+#include <signal.h>

 #include <stdexcept>
 #include <msg/msg.h>
 #include <xbt/log.h>
 #include <stdexcept>
 #include <msg/msg.h>
 #include <xbt/log.h>


@@ -11,6 +13,7 @@ XBT_LOG_NEW_SUBCATEGORY(depl, main, "Messages from auto deployment");
 XBT_LOG_NEW_SUBCATEGORY(comm, simu, "Messages from asynchronous pipes");
 XBT_LOG_NEW_SUBCATEGORY(proc, simu, "Messages from base process class");
 XBT_LOG_NEW_SUBCATEGORY(loba, simu, "Messages from load-balancer");
 XBT_LOG_NEW_SUBCATEGORY(comm, simu, "Messages from asynchronous pipes");
 XBT_LOG_NEW_SUBCATEGORY(proc, simu, "Messages from base process class");
 XBT_LOG_NEW_SUBCATEGORY(loba, simu, "Messages from load-balancer");

+XBT_LOG_NEW_SUBCATEGORY(thrd, simu, "Messages from thread wrapper class");

 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
 
 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
 


@@ -19,52 +22,145 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
 #include "misc.h"
 #include "options.h"
 #include "process.h"
 #include "misc.h"
 #include "options.h"
 #include "process.h"

+#include "statistics.h"
+#include "synchro.h"

 #include "timer.h"
 #include "timer.h"

+#include "tracing.h"

 #include "version.h"
 
 #include "version.h"
 

-// Failure exit status
-enum {
-    EXIT_NO_FAILURE    = 0x00,  // no error
-    EXIT_FAILURE_ARGS  = 0x01,  // bad arguments
-    EXIT_FAILURE_INIT  = 0x02,  // failed to initialize simulator
-    EXIT_FAILURE_SIMU  = 0x04,  // simulation failed
-    EXIT_FAILURE_CLEAN = 0x08,  // error at cleanup
-};
+#define DATA_DESCR_WIDTH 37

 
 

-int simulation_main(int argc, char* argv[])
+namespace {
+    // Failure exit status
+    enum {
+        EXIT_NO_FAILURE    = 0x00,  // no error
+        EXIT_FAILURE_ARGS  = 0x01,  // bad arguments
+        EXIT_FAILURE_INIT  = 0x02,  // failed to initialize simulator
+        EXIT_FAILURE_SIMU  = 0x04,  // simulation failed
+        EXIT_FAILURE_CLEAN = 0x08,  // error at cleanup
+        EXIT_FAILURE_OTHER = 0x10,  // other error
+    };
+
+    // Cannot be globally initialized...
+    mutex_t* proc_mutex;
+    condition_t* proc_cond;
+    unsigned proc_counter = 0;
+
+    statistics loads;
+    statistics comps;
+    statistics data_send_amount;
+    statistics data_recv_amount;
+    statistics data_send_count;
+    statistics data_recv_count;
+    statistics ctrl_send_amount;
+    statistics ctrl_recv_amount;
+    statistics ctrl_send_count;
+    statistics ctrl_recv_count;
+
+}
+
+static int simulation_main(int argc, char* argv[])

 {
     int result;
     process* proc;
     try {
         proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, argv);
 {
     int result;
     process* proc;
     try {
         proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, argv);

+
+        proc_mutex->acquire();
+        ++proc_counter;
+        proc_mutex->release();
+

         result = proc->run();
         result = proc->run();

+
+        proc_mutex->acquire();
+        loads.push(proc->get_real_load());
+        comps.push(proc->get_comp_amount());
+        data_send_amount.push(proc->get_data_send_amount());
+        data_recv_amount.push(proc->get_data_recv_amount());
+        data_send_count.push(proc->get_data_send_count());
+        data_recv_count.push(proc->get_data_recv_count());
+        ctrl_send_amount.push(proc->get_ctrl_send_amount());
+        ctrl_recv_amount.push(proc->get_ctrl_recv_amount());
+        ctrl_send_count.push(proc->get_ctrl_send_count());
+        ctrl_recv_count.push(proc->get_ctrl_recv_count());
+
+        // Synchronization barrier...
+        // The goal is to circumvent a limitation in SimGrid (at least
+        // in version 3.5): a process must be alive when another one
+        // destroys a communication they had together.
+
+        --proc_counter;
+        proc_cond->broadcast();
+        while (proc_counter > 0)
+            proc_cond->wait(*proc_mutex);
+        proc_mutex->release();
+

         delete proc;
     }
         delete proc;
     }

-    catch (std::invalid_argument& e) {
+    catch (const std::invalid_argument& e) {

         THROW1(arg_error, 0, "%s", e.what());
     }
         THROW1(arg_error, 0, "%s", e.what());
     }

+    catch (const std::exception& e) {
+        THROW1(0, 0, "%s", e.what());
+    }

     return result;
 }
 
     return result;
 }
 

-void check_for_lost_load()
+static void check_for_lost_load()

 {
 {

-    const double threshold = 1e-4;

     double total_init = process::get_total_load_init();
     double total_exit = process::get_total_load_exit();
     double lost = total_init - total_exit;
     double total_init = process::get_total_load_init();
     double total_exit = process::get_total_load_exit();
     double lost = total_init - total_exit;

-    double lost_ratio = 100 * lost / total_init;
-    if (lost_ratio < -threshold) {
-        CRITICAL2("Gained load at exit! %g (%g%%) <============",
+    double lost_ratio = 100.0 * lost / total_init;
+    if (lost_ratio < -opt::load_ratio_threshold)
+        XBT_ERROR("Gained load at exit! %g (%g%%) <============",
+                  -lost, -lost_ratio);
+    else if (lost_ratio > opt::load_ratio_threshold)
+        XBT_ERROR("Lost load at exit! %g (%g%%) <============",

                   lost, lost_ratio);
                   lost, lost_ratio);

-    } else if (lost_ratio > threshold) {
-        CRITICAL2("Lost load at exit! %g (%g%%) <============",
-                  lost, lost_ratio);
-    } else {
-        DEBUG2("Total load at exit looks good: %g (%g%%)", lost, lost_ratio);
+    else
+        XBT_VERB("Total load at exit looks good: %g (%g%%)", lost, lost_ratio);
+
+    double total_running = process::get_total_load_running();
+    double running_ratio = 100.0 * total_running / total_init;
+    if (running_ratio < -opt::load_ratio_threshold)
+        XBT_ERROR("Negative running load at exit! %g (%g%%) <============",
+                  total_running, running_ratio);
+    else if (running_ratio > opt::load_ratio_threshold)
+        XBT_ERROR("Remaining running load at exit! %g (%g%%) <============",
+                  total_running, running_ratio);
+    else
+        XBT_VERB("Running load at exit looks good: %g (%g%%)",
+                 total_running, running_ratio);
+}
+
+static void signal_handler(int /*sig*/)
+{
+    if (!opt::exit_request) {
+        XBT_CRITICAL(">>>>>>>>>>"
+                     " caught CTRL-C: global exit requested "
+                     "<<<<<<<<<<");
+        opt::exit_request = true;

     }
     }

+}

 
 

+static void install_signal_handler()
+{
+    struct sigaction action;
+    action.sa_handler = signal_handler;
+    sigemptyset(&action.sa_mask);
+    action.sa_flags = SA_RESTART;
+    if (sigaction (SIGINT, &action, NULL) == -1) {
+        std::cerr << "sigaction: " << strerror(errno) << "\n";
+        exit(EXIT_FAILURE_OTHER);
+    }

 }
 
 }
 

+#define PR_STATS(descr, st)                                             \
+    XBT_INFO("| %.*s: %g / %g / %g", DATA_DESCR_WIDTH,                  \
+             descr " (total/avg./stddev)................................", \
+             st.get_sum(), st.get_mean(), st.get_stddev())
+

 int main(int argc, char* argv[])
 {
     // Note: variables used after THROW must be declared as volatile.
 int main(int argc, char* argv[])
 {
     // Note: variables used after THROW must be declared as volatile.


@@ -91,9 +187,10 @@ int main(int argc, char* argv[])
     // Note: MSG_global_init() may throw an exception, but it seems
     // impossible to catch it correctly :-(
     MSG_global_init(&argc, argv);
     // Note: MSG_global_init() may throw an exception, but it seems
     // impossible to catch it correctly :-(
     MSG_global_init(&argc, argv);

+    install_signal_handler();

 
     // Parse global parameters
 
     // Parse global parameters

-    int parse_res = opt::parse_args(&argc, argv);
+    bool parse_res = opt::parse_args(&argc, argv);

     if (!parse_res
         || opt::version_requested || opt::help_requested) {
         if (opt::version_requested)
     if (!parse_res
         || opt::version_requested || opt::help_requested) {
         if (opt::version_requested)


@@ -106,7 +203,7 @@ int main(int argc, char* argv[])
         MSG_clean();
         exit(parse_res ? EXIT_NO_FAILURE : EXIT_FAILURE_ARGS);
     }
         MSG_clean();
         exit(parse_res ? EXIT_NO_FAILURE : EXIT_FAILURE_ARGS);
     }

-    INFO3("%s v%s (%s)", opt::program_name.c_str(), version::num.c_str(),
+    XBT_INFO("%s v%s (%s)", opt::program_name.c_str(), version::num.c_str(),

           version::date.c_str());
     opt::print();
 
           version::date.c_str());
     opt::print();
 


@@ -118,14 +215,17 @@ int main(int argc, char* argv[])
         MSG_function_register_default(simulation_main);
 
         // Create the platform and the application.
         MSG_function_register_default(simulation_main);
 
         // Create the platform and the application.

+        XBT_DEBUG("Loading platform file...");

         MSG_create_environment(opt::platform_file.c_str());
         MSG_create_environment(opt::platform_file.c_str());

+        XBT_DEBUG("Creating hostdata...");

         hostdata::create();
         hostdata::create();

+        XBT_DEBUG("Deploying processes...");

         if (opt::auto_depl::enabled) {
             if (!opt::auto_depl::nhosts)
                 opt::auto_depl::nhosts = hostdata::size();
             if (opt::auto_depl::nhosts > hostdata::size()) {
         if (opt::auto_depl::enabled) {
             if (!opt::auto_depl::nhosts)
                 opt::auto_depl::nhosts = hostdata::size();
             if (opt::auto_depl::nhosts > hostdata::size()) {

-                WARN2("%u hosts is too much: limiting to %u",
-                      opt::auto_depl::nhosts, (unsigned )hostdata::size());
+                XBT_WARN("%u hosts is too much: limiting to %zu",
+                         opt::auto_depl::nhosts, hostdata::size());

                 opt::auto_depl::nhosts = hostdata::size();
             }
             if (!opt::auto_depl::load)
                 opt::auto_depl::nhosts = hostdata::size();
             }
             if (!opt::auto_depl::load)


@@ -135,14 +235,25 @@ int main(int argc, char* argv[])
             MSG_launch_application(opt::deployment_file.c_str());
         }
 
             MSG_launch_application(opt::deployment_file.c_str());
         }
 

+        // Register tracing categories
+        TRACE_category(TRACE_CAT_COMP);
+        TRACE_category(TRACE_CAT_CTRL);
+        TRACE_category(TRACE_CAT_DATA);
+

         exit_status = EXIT_FAILURE_SIMU; // =====
 
         exit_status = EXIT_FAILURE_SIMU; // =====
 

+        proc_mutex = new mutex_t();
+        proc_cond = new condition_t();
+

         // Launch the MSG simulation.
         // Launch the MSG simulation.

-        INFO1("Starting simulation at %f...", MSG_get_clock());
+        XBT_INFO("Starting simulation at %f...", MSG_get_clock());

         res = MSG_main();
         simulated_time = MSG_get_clock();
         res = MSG_main();
         simulated_time = MSG_get_clock();

-        INFO1("Simulation ended at %f.", simulated_time);
-        check_for_lost_load();
+        XBT_INFO("Simulation ended at %f.", simulated_time);
+
+        delete proc_cond;
+        delete proc_mutex;
+

         if (res != MSG_OK)
             THROW1(0, 0, "MSG_main() failed with status %#x", res);
 
         if (res != MSG_OK)
             THROW1(0, 0, "MSG_main() failed with status %#x", res);
 


@@ -152,8 +263,8 @@ int main(int argc, char* argv[])
         int len = strlen(ex.msg);
         if (len > 0 && ex.msg[len - 1] == '\n')
             ex.msg[len - 1] = '\0'; // strip the ending '\n'
         int len = strlen(ex.msg);
         if (len > 0 && ex.msg[len - 1] == '\n')
             ex.msg[len - 1] = '\0'; // strip the ending '\n'

-        ERROR1("%s", ex.msg);
-        DEBUG3("Error from %s() in %s:%d", ex.func, ex.file, ex.line);
+        XBT_ERROR("%s", ex.msg);
+        XBT_DEBUG("Error from %s() in %s:%d", ex.func, ex.file, ex.line);

         xbt_ex_free(ex);
     }
 
         xbt_ex_free(ex);
     }
 


@@ -161,22 +272,37 @@ int main(int argc, char* argv[])
     hostdata::destroy();
     res = MSG_clean();
     if (res != MSG_OK) {
     hostdata::destroy();
     res = MSG_clean();
     if (res != MSG_OK) {

-        ERROR1("MSG_clean() failed with status %#x", res);
+        XBT_ERROR("MSG_clean() failed with status %#x", res);

         exit_status |= EXIT_FAILURE_CLEAN;
     }
 
     // Report final simulation status.
     if (simulated_time >= 0.0) {
         simulation_time.stop();
         exit_status |= EXIT_FAILURE_CLEAN;
     }
 
     // Report final simulation status.
     if (simulated_time >= 0.0) {
         simulation_time.stop();

-        INFO0(",----[ Results ]");
-        INFO1("| Total simulated time...: %g", simulated_time);
-        INFO1("| Total simulation time..: %g", simulation_time.duration());
-        INFO0("`----");
+        check_for_lost_load();
+        XBT_INFO(",----[ Results ]");
+        PR_STATS("Load", loads);
+        PR_STATS("Computation", comps);
+        PR_STATS("Data send amount", data_send_amount);
+        PR_STATS("Data recv amount", data_recv_amount);
+        PR_STATS("Data send count", data_send_count);
+        PR_STATS("Data recv count", data_recv_count);
+        PR_STATS("Ctrl send amount", ctrl_send_amount);
+        PR_STATS("Ctrl recv amount", ctrl_recv_amount);
+        PR_STATS("Ctrl send count", ctrl_send_count);
+        PR_STATS("Ctrl recv count", ctrl_recv_count);
+        XBT_INFO("| %.*s: %g", DATA_DESCR_WIDTH,
+                 "Total simulated time..................................",
+                 simulated_time);
+        XBT_INFO("| %.*s: %g", DATA_DESCR_WIDTH,
+                 "Total simulation time.................................",
+                 simulation_time.duration());
+        XBT_INFO("`----");

     }
     if (exit_status)
     }
     if (exit_status)

-        ERROR1("Simulation failed (%#x).", exit_status);
+        XBT_ERROR("Simulation failed (%#x).", exit_status);

     else
     else

-        INFO0("Simulation succeeded.");
+        XBT_INFO("Simulation succeeded.");

 
     return exit_status;
 }
 
     return exit_status;
 }