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-rw-r--r--vendor/github.com/karalabe/hid/libusb/libusb/os/threads_posix.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/vendor/github.com/karalabe/hid/libusb/libusb/os/threads_posix.c b/vendor/github.com/karalabe/hid/libusb/libusb/os/threads_posix.c
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index 0000000..a4f270b
--- /dev/null
+++ b/vendor/github.com/karalabe/hid/libusb/libusb/os/threads_posix.c
@@ -0,0 +1,79 @@
+/*
+ * libusb 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
+ */
+
+#include <config.h>
+
+#include <time.h>
+#if defined(__linux__) || defined(__OpenBSD__)
+# if defined(__OpenBSD__)
+# 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"
+#include "libusbi.h"
+
+int usbi_cond_timedwait(pthread_cond_t *cond,
+ pthread_mutex_t *mutex, const struct timeval *tv)
+{
+ struct timespec timeout;
+ int r;
+
+ r = usbi_backend->clock_gettime(USBI_CLOCK_REALTIME, &timeout);
+ if (r < 0)
+ return r;
+
+ timeout.tv_sec += tv->tv_sec;
+ timeout.tv_nsec += tv->tv_usec * 1000;
+ while (timeout.tv_nsec >= 1000000000L) {
+ timeout.tv_nsec -= 1000000000L;
+ timeout.tv_sec++;
+ }
+
+ return pthread_cond_timedwait(cond, mutex, &timeout);
+}
+
+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;
+}