Add ability to delay the beginning of computations.

[loba.git] / process.cpp

diff --git a/process.cpp b/process.cpp
index f997d99efc7c1127520e535e7e75e61ea1bd14d0..880bbd0b50c226bb3299470de8bc9ba114103d44 100644 (file)
--- a/process.cpp
+++ b/process.cpp
@@ -58,9 +58,9 @@ process::process(int argc, char* argv[])
 
     comp_iter = lb_iter = 0;
 
-    compute_thread = new_msg_thread("compute",
-                                    std::tr1::bind(&process::compute_loop,
-                                                   this));
+    lb_thread = new_msg_thread("loba",
+                               std::tr1::bind(&process::load_balance_loop,
+                                              this));
 
     e_xbt_log_priority_t logp = xbt_log_priority_verbose;
     if (!LOG_ISENABLED(logp))
@@ -80,7 +80,7 @@ process::process(int argc, char* argv[])
 
 process::~process()
 {
-    delete compute_thread;
+    delete lb_thread;
     total_load_exit += real_load;
     if (opt::log_rate < 0)
         return;
@@ -99,9 +99,16 @@ int process::run()
     if (opt::log_rate >= 0)
         XBT_INFO("Initial load: %g", real_load);
     XBT_VERB("Starting...");
-    compute_thread->start();
-    load_balance_loop();
-    compute_thread->wait();
+    mutex.acquire();
+    lb_thread->start();
+    while (lb_iter <= opt::comp_iter_delay)
+        cond.wait(mutex);
+    mutex.release();
+    double sleep_duration = opt::comp_time_delay - MSG_get_clock();
+    if (sleep_duration > 0.0)
+        MSG_process_sleep(sleep_duration);
+    compute_loop();
+    lb_thread->wait();
     XBT_VERB("Done.");
     return 0;
 }
@@ -113,7 +120,14 @@ void process::load_balance_loop()
 
     double next_iter_after_date = MSG_get_clock() + opt::min_lb_iter_duration;
     while (still_running()) {
-        ++lb_iter;
+        if (lb_iter == opt::comp_iter_delay) {
+            mutex.acquire();
+            ++lb_iter;
+            cond.signal();
+            mutex.release();
+        } else {
+            ++lb_iter;
+        }
 
         if (opt::log_rate && lb_iter % opt::log_rate == 0) {
             if (opt::bookkeeping)