make uart_pty threadsafe

[simavr] / examples / parts / uart_pty.h

diff --git a/examples/parts/uart_pty.h b/examples/parts/uart_pty.h
index c6e0603..6f82cf1 100644 (file)
--- a/examples/parts/uart_pty.h
+++ b/examples/parts/uart_pty.h
@@ -50,6 +50,7 @@ typedef struct uart_pty_t {
        struct avr_t *avr;              // keep it around so we can pause it
 
        pthread_t       thread;
+       pthread_mutex_t lock;
        int                     xon;
 
        union {