1 files changed, 123 insertions, 0 deletions
diff --git a/zbar/thread.h b/zbar/thread.h
new file mode 100644
index 0000000..56a9828
--- /dev/null
+++ b/zbar/thread.h
@@ -0,0 +1,123 @@
+/*------------------------------------------------------------------------
+ *  Copyright 2007-2009 (c) Jeff Brown <spadix@users.sourceforge.net>
+ *
+ *  This file is part of the ZBar Bar Code Reader.
+ *
+ *  The ZBar Bar Code Reader is free software; you can redistribute it
+ *  and/or modify it under the terms of the GNU Lesser Public License as
+ *  published by the Free Software Foundation; either version 2.1 of
+ *  the License, or (at your option) any later version.
+ *
+ *  The ZBar Bar Code Reader is distributed in the hope that it will be
+ *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ *  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser Public License
+ *  along with the ZBar Bar Code Reader; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA  02110-1301  USA
+ *
+ *  http://sourceforge.net/projects/zbar
+ *------------------------------------------------------------------------*/
+#ifndef _ZBAR_THREAD_H_
+#define _ZBAR_THREAD_H_
+
+/* simple platform thread abstraction
+ */
+
+#include "config.h"
+#include "event.h"
+
+#if defined(_WIN32)
+
+#include <windows.h>
+#define HAVE_THREADS
+#define ZTHREAD DWORD WINAPI
+
+typedef DWORD(WINAPI zbar_thread_proc_t)(void *);
+
+typedef DWORD zbar_thread_id_t;
+
+#elif defined(HAVE_LIBPTHREAD)
+
+#include <pthread.h>
+#include <signal.h>
+#define HAVE_THREADS
+#define ZTHREAD void *
+
+typedef ZTHREAD(zbar_thread_proc_t)(void *);
+
+typedef pthread_t zbar_thread_id_t;
+
+#else
+
+#undef HAVE_THREADS
+#undef ZTHREAD
+
+typedef void zbar_thread_proc_t;
+typedef int zbar_thread_id_t;
+
+#endif
+
+typedef struct zbar_thread_s {
+    zbar_thread_id_t tid;
+    int started, running;
+    zbar_event_t notify, activity;
+} zbar_thread_t;
+
+#if defined(_WIN32)
+
+static inline void _zbar_thread_init(zbar_thread_t *thr)
+{
+    thr->running = 1;
+    _zbar_event_trigger(&thr->activity);
+}
+
+static inline zbar_thread_id_t _zbar_thread_self()
+{
+    return (GetCurrentThreadId());
+}
+
+static inline int _zbar_thread_is_self(zbar_thread_id_t tid)
+{
+    return (tid == GetCurrentThreadId());
+}
+
+#elif defined(HAVE_LIBPTHREAD)
+
+static inline void _zbar_thread_init(zbar_thread_t *thr)
+{
+    sigset_t sigs;
+    sigfillset(&sigs);
+    pthread_sigmask(SIG_BLOCK, &sigs, NULL);
+    thr->running = 1;
+    _zbar_event_trigger(&thr->activity);
+}
+
+static inline zbar_thread_id_t _zbar_thread_self(void)
+{
+    return (pthread_self());
+}
+
+static inline int _zbar_thread_is_self(zbar_thread_id_t tid)
+{
+    return (pthread_equal(tid, pthread_self()));
+}
+
+#else
+
+#define _zbar_thread_start(...)	  -1
+#define _zbar_thread_stop(...)	  0
+#define _zbar_thread_self(...)	  0
+#define _zbar_thread_is_self(...) 1
+
+#endif
+
+#ifdef HAVE_THREADS
+extern int _zbar_thread_start(zbar_thread_t *, zbar_thread_proc_t *, void *,
+			      zbar_mutex_t *);
+extern int _zbar_thread_stop(zbar_thread_t *, zbar_mutex_t *);
+#endif
+
+#endif