util: move os_time.[ch] to src/util

[mesa.git] / src / gallium / auxiliary / os / os_time.c

diff --git a/src/gallium/auxiliary/os/os_time.c b/src/gallium/auxiliary/os/os_time.c
deleted file mode 100644 (file)
index e4a1cae..0000000
--- a/src/gallium/auxiliary/os/os_time.c
+++ /dev/null
@@ -1,190 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2008-2010 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, sub license, 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 (including the
- * next paragraph) 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 NON-INFRINGEMENT.
- * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
- *
- **************************************************************************/
-
-/**
- * @file
- * OS independent time-manipulation functions.
- * 
- * @author Jose Fonseca <jfonseca@vmware.com>
- */
-
-
-#include "pipe/p_defines.h"
-#include "util/u_atomic.h"
-
-#if defined(PIPE_OS_UNIX)
-#  include <time.h> /* timeval */
-#  include <sys/time.h> /* timeval */
-#  include <sched.h> /* sched_yield */
-#  include <errno.h>
-#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
-#  include <windows.h>
-#else
-#  error Unsupported OS
-#endif
-
-#include "os_time.h"
-
-
-int64_t
-os_time_get_nano(void)
-{
-#if defined(PIPE_OS_LINUX)
-
-   struct timespec tv;
-   clock_gettime(CLOCK_MONOTONIC, &tv);
-   return tv.tv_nsec + tv.tv_sec*INT64_C(1000000000);
-
-#elif defined(PIPE_OS_UNIX)
-
-   struct timeval tv;
-   gettimeofday(&tv, NULL);
-   return tv.tv_usec*INT64_C(1000) + tv.tv_sec*INT64_C(1000000000);
-
-#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
-
-   static LARGE_INTEGER frequency;
-   LARGE_INTEGER counter;
-   int64_t secs, nanosecs;
-   if(!frequency.QuadPart)
-      QueryPerformanceFrequency(&frequency);
-   QueryPerformanceCounter(&counter);
-   /* Compute seconds and nanoseconds parts separately to
-    * reduce severity of precision loss.
-    */
-   secs = counter.QuadPart / frequency.QuadPart;
-   nanosecs = (counter.QuadPart % frequency.QuadPart) * INT64_C(1000000000)
-      / frequency.QuadPart;
-   return secs*INT64_C(1000000000) + nanosecs;
-
-#else
-
-#error Unsupported OS
-
-#endif
-}
-
-
-
-void
-os_time_sleep(int64_t usecs)
-{
-#if defined(PIPE_OS_LINUX)
-   struct timespec time;
-   time.tv_sec = usecs / 1000000;
-   time.tv_nsec = (usecs % 1000000) * 1000;
-   while (clock_nanosleep(CLOCK_MONOTONIC, 0, &time, &time) == EINTR);
-
-#elif defined(PIPE_OS_UNIX)
-   usleep(usecs);
-
-#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
-   DWORD dwMilliseconds = (DWORD) ((usecs + 999) / 1000);
-   /* Avoid Sleep(O) as that would cause to sleep for an undetermined duration */
-   if (dwMilliseconds) {
-      Sleep(dwMilliseconds);
-   }
-#else
-#  error Unsupported OS
-#endif
-}
-
-
-
-int64_t
-os_time_get_absolute_timeout(uint64_t timeout)
-{
-   int64_t time, abs_timeout;
-
-   /* Also check for the type upper bound. */
-   if (timeout == PIPE_TIMEOUT_INFINITE || timeout > INT64_MAX)
-      return PIPE_TIMEOUT_INFINITE;
-
-   time = os_time_get_nano();
-   abs_timeout = time + (int64_t)timeout;
-
-   /* Check for overflow. */
-   if (abs_timeout < time)
-      return PIPE_TIMEOUT_INFINITE;
-
-   return abs_timeout;
-}
-
-
-bool
-os_wait_until_zero(volatile int *var, uint64_t timeout)
-{
-   if (!p_atomic_read(var))
-      return true;
-
-   if (!timeout)
-      return false;
-
-   if (timeout == PIPE_TIMEOUT_INFINITE) {
-      while (p_atomic_read(var)) {
-#if defined(PIPE_OS_UNIX)
-         sched_yield();
-#endif
-      }
-      return true;
-   }
-   else {
-      int64_t start_time = os_time_get_nano();
-      int64_t end_time = start_time + timeout;
-
-      while (p_atomic_read(var)) {
-         if (os_time_timeout(start_time, end_time, os_time_get_nano()))
-            return false;
-
-#if defined(PIPE_OS_UNIX)
-         sched_yield();
-#endif
-      }
-      return true;
-   }
-}
-
-
-bool
-os_wait_until_zero_abs_timeout(volatile int *var, int64_t timeout)
-{
-   if (!p_atomic_read(var))
-      return true;
-
-   if (timeout == PIPE_TIMEOUT_INFINITE)
-      return os_wait_until_zero(var, PIPE_TIMEOUT_INFINITE);
-
-   while (p_atomic_read(var)) {
-      if (os_time_get_nano() >= timeout)
-         return false;
-
-#if defined(PIPE_OS_UNIX)
-      sched_yield();
-#endif
-   }
-   return true;
-}