1 files changed, 82 insertions, 0 deletions
diff --git a/libusbx-1.0.18/libusb/os/threads_posix.c b/libusbx-1.0.18/libusb/os/threads_posix.c
new file mode 100644
index 0000000..edf7063
--- /dev/null
+++ b/libusbx-1.0.18/libusb/os/threads_posix.c
@@ -0,0 +1,82 @@
+/*
+ * libusbx synchronization using POSIX Threads
+ *
+ * Copyright © 2011 Vitali Lovich <vlovich@aliph.com>
+ * Copyright © 2011 Peter Stuge <peter@stuge.se>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#if defined(__linux__) || defined(__OpenBSD__)
+# if defined(__linux__)
+#  define _GNU_SOURCE
+# else
+#  define _BSD_SOURCE
+# endif
+# include <unistd.h>
+# include <sys/syscall.h>
+#elif defined(__APPLE__)
+# include <mach/mach.h>
+#elif defined(__CYGWIN__)
+# include <windows.h>
+#endif
+
+#include "threads_posix.h"
+
+int usbi_mutex_init_recursive(pthread_mutex_t *mutex, pthread_mutexattr_t *attr)
+{
+	int err;
+	pthread_mutexattr_t stack_attr;
+	if (!attr) {
+		attr = &stack_attr;
+		err = pthread_mutexattr_init(&stack_attr);
+		if (err != 0)
+			return err;
+	}
+
+	/* mutexattr_settype requires _GNU_SOURCE or _XOPEN_SOURCE >= 500 on Linux */
+	err = pthread_mutexattr_settype(attr, PTHREAD_MUTEX_RECURSIVE);
+	if (err != 0)
+		goto finish;
+
+	err = pthread_mutex_init(mutex, attr);
+
+finish:
+	if (attr == &stack_attr)
+		pthread_mutexattr_destroy(&stack_attr);
+
+	return err;
+}
+
+int usbi_get_tid(void)
+{
+	int ret = -1;
+#if defined(__ANDROID__)
+	ret = gettid();
+#elif defined(__linux__)
+	ret = syscall(SYS_gettid);
+#elif defined(__OpenBSD__)
+	/* The following only works with OpenBSD > 5.1 as it requires
+	   real thread support. For 5.1 and earlier, -1 is returned. */
+	ret = syscall(SYS_getthrid);
+#elif defined(__APPLE__)
+	ret = mach_thread_self();
+	mach_port_deallocate(mach_task_self(), ret);
+#elif defined(__CYGWIN__)
+	ret = GetCurrentThreadId();
+#endif
+/* TODO: NetBSD thread ID support */
+	return ret;
+}