Fixed various trivial cppcheck 1.80 warnings

[platform/upstream/libusb.git] / libusb / os / threads_posix.c

diff --git a/libusb/os/threads_posix.c b/libusb/os/threads_posix.c
index 60c57cf..ce14445 100644 (file)
--- a/libusb/os/threads_posix.c
+++ b/libusb/os/threads_posix.c
@@ -1,8 +1,8 @@
 /*
  * 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
@@ -19,37 +19,63 @@
  * 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
+#include <config.h>
+
+#include <time.h>
+#if defined(__linux__) || defined(__OpenBSD__)
+# if defined(__OpenBSD__)
+#  define _BSD_SOURCE
 # endif
-#else
-#define _XOPEN_SOURCE 500
-#endif /* _XOPEN_SOURCE */
+# 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_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 = mach_thread_self();
+       mach_port_deallocate(mach_task_self(), ret);
+#elif defined(__CYGWIN__)
+       ret = GetCurrentThreadId();
+#else
+       ret = -1;
+#endif
+/* TODO: NetBSD thread ID support */
+       return ret;
 }