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Diffstat (limited to 'Radio/HW/RtlSdr/libusb/os/threads_posix.c')
-rw-r--r--Radio/HW/RtlSdr/libusb/os/threads_posix.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/Radio/HW/RtlSdr/libusb/os/threads_posix.c b/Radio/HW/RtlSdr/libusb/os/threads_posix.c
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--- /dev/null
+++ b/Radio/HW/RtlSdr/libusb/os/threads_posix.c
@@ -0,0 +1,129 @@
+/*
+ * 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 "libusbi.h"
+
+#include <errno.h>
+#if defined(__ANDROID__)
+# include <unistd.h>
+#elif defined(__HAIKU__)
+# include <os/kernel/OS.h>
+#elif defined(__linux__)
+# include <sys/syscall.h>
+# include <unistd.h>
+#elif defined(__NetBSD__)
+# include <lwp.h>
+#elif defined(__OpenBSD__)
+# define _BSD_SOURCE
+# include <sys/syscall.h>
+# include <unistd.h>
+#elif defined(__sun__)
+# include <sys/lwp.h>
+#endif
+
+void usbi_cond_init(pthread_cond_t *cond)
+{
+#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK
+ pthread_condattr_t condattr;
+
+ PTHREAD_CHECK(pthread_condattr_init(&condattr));
+ PTHREAD_CHECK(pthread_condattr_setclock(&condattr, CLOCK_MONOTONIC));
+ PTHREAD_CHECK(pthread_cond_init(cond, &condattr));
+ PTHREAD_CHECK(pthread_condattr_destroy(&condattr));
+#else
+ PTHREAD_CHECK(pthread_cond_init(cond, NULL));
+#endif
+}
+
+int usbi_cond_timedwait(pthread_cond_t *cond,
+ pthread_mutex_t *mutex, const struct timeval *tv)
+{
+ struct timespec timeout;
+ int r;
+
+#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK
+ usbi_get_monotonic_time(&timeout);
+#else
+ usbi_get_real_time(&timeout);
+#endif
+
+ timeout.tv_sec += tv->tv_sec;
+ timeout.tv_nsec += tv->tv_usec * 1000L;
+ if (timeout.tv_nsec >= NSEC_PER_SEC) {
+ timeout.tv_nsec -= NSEC_PER_SEC;
+ timeout.tv_sec++;
+ }
+
+ r = pthread_cond_timedwait(cond, mutex, &timeout);
+ if (r == 0)
+ return 0;
+ else if (r == ETIMEDOUT)
+ return LIBUSB_ERROR_TIMEOUT;
+ else
+ return LIBUSB_ERROR_OTHER;
+}
+
+unsigned int usbi_get_tid(void)
+{
+ static _Thread_local unsigned int tl_tid;
+ int tid;
+
+ if (tl_tid)
+ return tl_tid;
+
+#if defined(__ANDROID__)
+ tid = gettid();
+#elif defined(__APPLE__)
+#ifdef HAVE_PTHREAD_THREADID_NP
+ uint64_t thread_id;
+
+ if (pthread_threadid_np(NULL, &thread_id) == 0)
+ tid = (int)thread_id;
+ else
+ tid = -1;
+#else
+ tid = (int)pthread_mach_thread_np(pthread_self());
+#endif
+#elif defined(__HAIKU__)
+ tid = get_pthread_thread_id(pthread_self());
+#elif defined(__linux__)
+ tid = (int)syscall(SYS_gettid);
+#elif defined(__NetBSD__)
+ tid = _lwp_self();
+#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. */
+ tid = syscall(SYS_getthrid);
+#elif defined(__sun__)
+ tid = _lwp_self();
+#else
+ tid = -1;
+#endif
+
+ if (tid == -1) {
+ /* If we don't have a thread ID, at least return a unique
+ * value that can be used to distinguish individual
+ * threads. */
+ tid = (int)(intptr_t)pthread_self();
+ }
+
+ return tl_tid = (unsigned int)tid;
+}