Define classes for mutex and condition objects.

diff --git a/communicator.cpp b/communicator.cpp
index 96cd598fbaf807574f8870952a9e05c352f1784f..506f126ce14b37975b4e61dfee62302a1b89f4be 100644 (file)
--- a/communicator.cpp
+++ b/communicator.cpp
@@ -25,16 +25,13 @@ std::string message::to_string()
 
 communicator::communicator()
     : host(static_cast<hostdata*>(MSG_host_get_data(MSG_host_self())))
-    , receiver_mutex(xbt_mutex_init())
-    , receiver_cond(xbt_cond_init())
 {
-    xbt_mutex_acquire(receiver_mutex);
+    receiver_mutex.acquire();
     receiver_thread =
         MSG_process_create("receiver", communicator::receiver_wrapper,
                            this, MSG_host_self());
-    // wait for the receiver to be ready
-    xbt_cond_wait(receiver_cond, receiver_mutex);
-    xbt_mutex_release(receiver_mutex);
+    receiver_cond.wait(receiver_mutex); // wait for the receiver to be ready
+    receiver_mutex.release();
 }
 
 communicator::~communicator()
@@ -49,12 +46,12 @@ communicator::~communicator()
     task = MSG_task_create("finalize", 0.0, 0, NULL);
     MSG_task_send(task, host->get_data_mbox());
 
-    xbt_mutex_acquire(receiver_mutex);
+    receiver_mutex.acquire();
     while (receiver_thread) {
         XBT_DEBUG("waiting for receiver to terminate");
-        xbt_cond_wait(receiver_cond, receiver_mutex);
+        receiver_cond.wait(receiver_mutex);
     }
-    xbt_mutex_release(receiver_mutex);
+    receiver_mutex.release();
 
     if (!received.empty())
         XBT_WARN("lost %zu received message%s!",
@@ -62,9 +59,6 @@ communicator::~communicator()
     if (!sent_comm.empty())
         XBT_WARN("lost %zu sent message%s!",
                  sent_comm.size(), ESSE(sent_comm.size()));
-
-    xbt_cond_destroy(receiver_cond);
-    xbt_mutex_destroy(receiver_mutex);
 }
 
 void communicator::send(const char* dest, message* msg)
@@ -86,16 +80,16 @@ bool communicator::recv(message*& msg, m_host_t& from, double timeout)
     if (timeout != 0) {
         volatile double deadline =
             timeout > 0 ? MSG_get_clock() + timeout : 0.0;
-        xbt_mutex_acquire(receiver_mutex);
+        receiver_mutex.acquire();
         while (received.empty() && (!deadline || deadline > MSG_get_clock())) {
             xbt_ex_t e;
             XBT_DEBUG("waiting for a message to come");
             TRY {
                 if (deadline)
-                    xbt_cond_timedwait(receiver_cond, receiver_mutex,
-                                       deadline - MSG_get_clock());
+                    receiver_cond.timedwait(receiver_mutex,
+                                            deadline - MSG_get_clock());
                 else
-                    xbt_cond_wait(receiver_cond, receiver_mutex);
+                    receiver_cond.wait(receiver_mutex);
             }
             CATCH (e) {
                 if (e.category != timeout_error)
@@ -103,7 +97,7 @@ bool communicator::recv(message*& msg, m_host_t& from, double timeout)
                 xbt_ex_free(e);
             }
         }
-        xbt_mutex_release(receiver_mutex);
+        receiver_mutex.release();
     }
 
     if (received.empty())
@@ -142,10 +136,10 @@ int communicator::receiver_wrapper(int, char* [])
     comm->receiver();
 
     XBT_DEBUG("terminate");
-    xbt_mutex_acquire(comm->receiver_mutex);
+    comm->receiver_mutex.acquire();
     comm->receiver_thread = NULL;
-    xbt_cond_signal(comm->receiver_cond);
-    xbt_mutex_release(comm->receiver_mutex);
+    comm->receiver_cond.signal();
+    comm->receiver_mutex.release();
 
     return 0;
 }
@@ -168,9 +162,9 @@ void communicator::receiver()
     }
 
     XBT_DEBUG("receiver ready");
-    xbt_mutex_acquire(receiver_mutex);
-    xbt_cond_signal(receiver_cond); // signal master that we are ready
-    xbt_mutex_release(receiver_mutex);
+    receiver_mutex.acquire();
+    receiver_cond.signal();     // signal master that we are ready
+    receiver_mutex.release();
 
     while (!xbt_dynar_is_empty(comms)) {
 
@@ -184,10 +178,10 @@ void communicator::receiver()
         comm_check_n_destroy(ch->comm);
         if (strcmp(MSG_task_get_name(ch->task), "finalize")) {
             XBT_DEBUG("received message on %s", ch->mbox);
-            xbt_mutex_acquire(receiver_mutex);
+            receiver_mutex.acquire();
             received.push(ch->task);
-            xbt_cond_signal(receiver_cond);
-            xbt_mutex_release(receiver_mutex);
+            receiver_cond.signal();
+            receiver_mutex.release();
             ch->task = NULL;
             ch->comm = MSG_task_irecv(&ch->task, ch->mbox);
             xbt_dynar_set_as(comms, index, msg_comm_t, ch->comm);

diff --git a/communicator.h b/communicator.h
index c335920871dce5dfc785989620aea9c2e9ebbdc8..b51f743d8aedb4ed5ceffcc39c6a84c1db854893 100644 (file)
--- a/communicator.h
+++ b/communicator.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <msg/msg.h>
 #include "hostdata.h"
+#include "synchro.h"
 
 class message {
 public:
@@ -53,8 +54,8 @@ private:
     std::queue<m_task_t> received;
 
     // Handling of receiving thread
-    xbt_mutex_t receiver_mutex;
-    xbt_cond_t receiver_cond;
+    mutex_t receiver_mutex;
+    condition_t receiver_cond;
     m_process_t receiver_thread;
     static int receiver_wrapper(int, char* []);
     void receiver();

diff --git a/main.cpp b/main.cpp
index 0aa4327ba85a01a3bd77497cbbb729de3b164385..ebf28f10c379e715c1a9b45878d1a271b6a1953b 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -20,6 +20,7 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
 #include "options.h"
 #include "process.h"
 #include "statistics.h"
+#include "synchro.h"
 #include "timer.h"
 #include "tracing.h"
 #include "version.h"
@@ -34,9 +35,9 @@ namespace {
         EXIT_FAILURE_CLEAN = 0x08,  // error at cleanup
     };
 
-    xbt_mutex_t proc_mutex;
-    xbt_cond_t proc_cond;
-    unsigned proc_counter;
+    mutex_t proc_mutex;
+    condition_t proc_cond;
+    unsigned proc_counter = 0;
 
     statistics comps;
     statistics loads;
@@ -50,13 +51,13 @@ static int simulation_main(int argc, char* argv[])
     try {
         proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, argv);
 
-        xbt_mutex_acquire(proc_mutex);
+        proc_mutex.acquire();
         ++proc_counter;
-        xbt_mutex_release(proc_mutex);
+        proc_mutex.release();
 
         result = proc->run();
 
-        xbt_mutex_acquire(proc_mutex);
+        proc_mutex.acquire();
         comps.push(proc->get_comp());
         loads.push(proc->get_real_load());
 
@@ -66,10 +67,10 @@ static int simulation_main(int argc, char* argv[])
         // destroys a communication they had together.
 
         --proc_counter;
-        xbt_cond_broadcast(proc_cond);
+        proc_cond.broadcast();
         while (proc_counter > 0)
-            xbt_cond_wait(proc_cond, proc_mutex);
-        xbt_mutex_release(proc_mutex);
+            proc_cond.wait(proc_mutex);
+        proc_mutex.release();
 
         delete proc;
     }
@@ -190,19 +191,12 @@ int main(int argc, char* argv[])
 
         exit_status = EXIT_FAILURE_SIMU; // =====
 
-        proc_mutex = xbt_mutex_init();
-        proc_cond = xbt_cond_init();
-        proc_counter = 0;
-
         // Launch the MSG simulation.
         XBT_INFO("Starting simulation at %f...", MSG_get_clock());
         res = MSG_main();
         simulated_time = MSG_get_clock();
         XBT_INFO("Simulation ended at %f.", simulated_time);
 
-        xbt_cond_destroy(proc_cond);
-        xbt_mutex_destroy(proc_mutex);
-
         if (res != MSG_OK)
             THROW1(0, 0, "MSG_main() failed with status %#x", res);
 

diff --git a/synchro.h b/synchro.h
new file mode 100644 (file)
index 0000000..7b04f92
--- /dev/null
+++ b/synchro.h
@@ -0,0 +1,37 @@
+#ifndef SYNCHRO_H
+#define SYNCHRO_H
+
+#include <xbt/synchro.h>
+
+class mutex_t {
+public:
+    mutex_t()                   { mutex = xbt_mutex_init(); }
+    ~mutex_t()                  { xbt_mutex_destroy(mutex); }
+    void acquire()              { xbt_mutex_acquire(mutex); }
+    void release()              { xbt_mutex_release(mutex); }
+    xbt_mutex_t get()           { return mutex;             }
+
+private:
+    xbt_mutex_t mutex;
+};
+
+class condition_t {
+public:
+    condition_t()               { cond = xbt_cond_init();           }
+    ~condition_t()              { xbt_cond_destroy(cond);           }
+    void broadcast()            { xbt_cond_broadcast(cond);         }
+    void signal()               { xbt_cond_signal(cond);            }
+    void wait(mutex_t& mutex)   { xbt_cond_wait(cond, mutex.get()); }
+    void timedwait(mutex_t& mutex, double delay) {
+        xbt_cond_timedwait(cond, mutex.get(), delay);
+    }
+
+private:
+    xbt_cond_t cond;
+};
+
+#endif // !SYNCHRO_H
+
+// Local variables:
+// mode: c++
+// End: