Commit 180d30be authored by Alex Bennée's avatar Alex Bennée Committed by Paolo Bonzini
Browse files

replay/replay-internal.c: track holding of replay_lock 



This is modelled after the iothread mutex lock. We keep a TLS flag to
indicate when that thread has acquired the lock and assert we don't
double-lock or release when we shouldn't have.

Signed-off-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Tested-by: default avatarPavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20180227095237.1060.44661.stgit@pasha-VirtualBox>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 80be169c

replay/replay-internal.c

+11 −0
Original line number Diff line number Diff line
@@ -169,6 +169,8 @@ void replay_finish_event(void) 
    replay_fetch_data_kind();

}



static __thread bool replay_locked;



void replay_mutex_init(void)

{

    qemu_mutex_init(&lock);
@@ -179,13 +181,22 @@ void replay_mutex_destroy(void) 
    qemu_mutex_destroy(&lock);

}



static bool replay_mutex_locked(void)

{

    return replay_locked;

}



void replay_mutex_lock(void)

{

    g_assert(!replay_mutex_locked());

    qemu_mutex_lock(&lock);

    replay_locked = true;

}



void replay_mutex_unlock(void)

{

    g_assert(replay_mutex_locked());

    replay_locked = false;

    qemu_mutex_unlock(&lock);

}