static pthread_mutex_t write_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t write_cond = PTHREAD_COND_INITIALIZER;
static pthread_t *write_threads = NULL;
static size_t write_threads_num = 0;
static pthread_key_t plugin_ctx_key;
static pthread_mutex_t write_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t write_cond = PTHREAD_COND_INITIALIZER;
static pthread_t *write_threads = NULL;
static size_t write_threads_num = 0;
static pthread_key_t plugin_ctx_key;