Merge branch 'master' of /home/git/random-fuzzer into thread-switch

[c11tester.git] / threads.cc

diff --git a/threads.cc b/threads.cc
index 8af66bde53a6946a153d2009c04e554495d4b8eb..23041b28b55db34d617b86b25e8f3c527810b918 100644 (file)
--- a/threads.cc
+++ b/threads.cc
@@ -14,6 +14,7 @@
 #include "model.h"
 #include "execution.h"
 #include "schedule.h"
+#include "clockvector.h"
 
 #ifdef TLS
 #include <dlfcn.h>
@@ -369,6 +370,7 @@ void Thread::complete()
  */
 Thread::Thread(thread_id_t tid) :
        parent(NULL),
+       acq_fence_cv(new ClockVector()),
        creation(NULL),
        pending(NULL),
        start_routine(NULL),
@@ -394,6 +396,7 @@ Thread::Thread(thread_id_t tid) :
  */
 Thread::Thread(thread_id_t tid, thrd_t *t, void (*func)(void *), void *a, Thread *parent) :
        parent(parent),
+       acq_fence_cv(new ClockVector()),
        creation(NULL),
        pending(NULL),
        start_routine(func),
@@ -426,6 +429,7 @@ Thread::Thread(thread_id_t tid, thrd_t *t, void (*func)(void *), void *a, Thread
  */
 Thread::Thread(thread_id_t tid, thrd_t *t, void *(*func)(void *), void *a, Thread *parent) :
        parent(parent),
+       acq_fence_cv(new ClockVector()),
        creation(NULL),
        pending(NULL),
        start_routine(NULL),
@@ -454,6 +458,8 @@ Thread::~Thread()
 {
        if (!is_complete())
                complete();
+
+       delete acq_fence_cv;
 }
 
 /** @return The thread_id_t corresponding to this Thread object. */
@@ -500,6 +506,14 @@ Thread * Thread::waiting_on() const
 bool Thread::is_waiting_on(const Thread *t) const
 {
        Thread *wait;
+
+       // One thread relocks a recursive mutex
+       if (waiting_on() == t && pending->is_lock()) {
+               int mutex_type = pending->get_mutex()->get_state()->type;
+               if (mutex_type == PTHREAD_MUTEX_RECURSIVE)
+                       return false;
+       }
+
        for (wait = waiting_on();wait != NULL;wait = wait->waiting_on())
                if (wait == t)
                        return true;