util: add u_thread.h

This is a minimal copy of os_thread.h from gallium in order to move
u_queue.{c,h} to this directory.

Reviewed-by: Marek Olšák <[email protected]>

2 files changed, 90 insertions, 0 deletions

diff --git a/src/util/Makefile.sources b/src/util/Makefile.sources
index 8b2170292d7..8b5ee2d0c71 100644
--- a/src/util/Makefile.sources
+++ b/src/util/Makefile.sources
@@ -45,6 +45,7 @@ MESA_UTIL_FILES :=	\
 	u_atomic.h \
 	u_endian.h \
 	u_string.h \
+	u_thread.h \
 	u_vector.c \
 	u_vector.h \
 	vk_alloc.h \
diff --git a/src/util/u_thread.h b/src/util/u_thread.h
new file mode 100644
index 00000000000..7411140fcb0
--- /dev/null
+++ b/src/util/u_thread.h
@@ -0,0 +1,89 @@
+/**************************************************************************
+ * 
+ * Copyright 1999-2006 Brian Paul
+ * Copyright 2008 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef U_THREAD_H_
+#define U_THREAD_H_
+
+#include "c11/threads.h"
+
+#ifdef HAVE_PTHREAD
+#include <signal.h>
+#endif
+
+
+static inline thrd_t u_thread_create(int (*routine)(void *), void *param)
+{
+   thrd_t thread;
+#ifdef HAVE_PTHREAD
+   sigset_t saved_set, new_set;
+   int ret;
+
+   sigfillset(&new_set);
+   pthread_sigmask(SIG_SETMASK, &new_set, &saved_set);
+   ret = thrd_create( &thread, routine, param );
+   pthread_sigmask(SIG_SETMASK, &saved_set, NULL);
+#else
+   int ret;
+   ret = thrd_create( &thread, routine, param );
+#endif
+   if (ret)
+      return 0;
+
+   return thread;
+}
+
+static inline void u_thread_setname( const char *name )
+{
+#if defined(HAVE_PTHREAD)
+#  if defined(__GNU_LIBRARY__) && defined(__GLIBC__) && defined(__GLIBC_MINOR__) && \
+      (__GLIBC__ >= 3 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 12))
+   pthread_setname_np(pthread_self(), name);
+#  endif
+#endif
+   (void)name;
+}
+
+/*
+ * Thread statistics.
+ */
+
+/* Return the time of a thread's CPU time clock. */
+static inline int64_t
+u_thread_get_time_nano(thrd_t thread)
+{
+#if defined(__linux__) && defined(HAVE_PTHREAD)
+   struct timespec ts;
+   clockid_t cid;
+
+   pthread_getcpuclockid(thread, &cid);
+   clock_gettime(cid, &ts);
+   return (int64_t)ts.tv_sec * 1000000000 + ts.tv_nsec;
+#else
+   return 0;
+#endif
+}
+
+#endif /* U_THREAD_H_ */