/*
* libusb synchronization using POSIX Threads
*
- * Copyright (C) 2011 Vitali Lovich <vlovich@aliph.com>
- * Copyright (C) 2011 Peter Stuge <peter@stuge.se>
+ * 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifdef _XOPEN_SOURCE
-# if _XOPEN_SOURCE < 500
-# undef _XOPEN_SOURCE
-# define _XOPEN_SOURCE 500
-# endif
-#else
-#define _XOPEN_SOURCE 500
-#endif /* _XOPEN_SOURCE */
+#include "libusbi.h"
-#include "threads_posix.h"
+#if defined(__ANDROID__)
+# include <unistd.h>
+#elif defined(__linux__) || defined(__OpenBSD__)
+# if defined(__OpenBSD__)
+# define _BSD_SOURCE
+# endif
+# include <sys/syscall.h>
+#endif
-int usbi_mutex_init_recursive(pthread_mutex_t *mutex, pthread_mutexattr_t *attr)
+int usbi_cond_timedwait(pthread_cond_t *cond,
+ pthread_mutex_t *mutex, const struct timeval *tv)
{
- int err;
- pthread_mutexattr_t stack_attr;
- if (!attr) {
- attr = &stack_attr;
- err = pthread_mutexattr_init(&stack_attr);
- if (err != 0)
- return err;
- }
+ struct timespec timeout;
+ int r;
- err = pthread_mutexattr_settype(attr, PTHREAD_MUTEX_RECURSIVE);
- if (err != 0)
- goto finish;
+ r = usbi_backend.clock_gettime(USBI_CLOCK_REALTIME, &timeout);
+ if (r < 0)
+ return r;
- err = pthread_mutex_init(mutex, attr);
+ 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++;
+ }
-finish:
- if (attr == &stack_attr)
- pthread_mutexattr_destroy(&stack_attr);
+ return pthread_cond_timedwait(cond, mutex, &timeout);
+}
- return err;
+int usbi_get_tid(void)
+{
+ int ret;
+#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 = (int)pthread_mach_thread_np(pthread_self());
+#elif defined(__CYGWIN__)
+ ret = GetCurrentThreadId();
+#else
+ ret = -1;
+#endif
+/* TODO: NetBSD thread ID support */
+ return ret;
}