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authorAlex Bennée <alex.bennee@linaro.org>2018-02-27 12:52:37 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2018-03-12 16:12:50 +0100
commit180d30bebeff8e3687b50bd55d44e6a5a83bc4da (patch)
tree289db24d64dfd4d1becce5d05f5e8031d0ef1c5c /replay
parent80be169c1fd178ed18d17012b7cdc09850ea8cd7 (diff)
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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: Alex Bennée <alex.bennee@linaro.org> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095237.1060.44661.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'replay')
-rw-r--r--replay/replay-internal.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/replay/replay-internal.c b/replay/replay-internal.c
index fca8514..0d7e1d6 100644
--- a/replay/replay-internal.c
+++ b/replay/replay-internal.c
@@ -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);
}