| /************************************************************************** |
| * |
| * 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> |
| */ |
| |
| #ifndef _OS_TIME_H_ |
| #define _OS_TIME_H_ |
| |
| |
| #include "pipe/p_config.h" |
| |
| #if defined(PIPE_OS_UNIX) |
| # include <unistd.h> /* usleep */ |
| #endif |
| |
| #include "pipe/p_compiler.h" |
| |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| |
| /* |
| * Get the current time in microseconds from an unknown base. |
| */ |
| int64_t |
| os_time_get(void); |
| |
| |
| /* |
| * Sleep. |
| */ |
| #if defined(PIPE_OS_UNIX) |
| #define os_time_sleep(_usecs) usleep(_usecs) |
| #else |
| void |
| os_time_sleep(int64_t usecs); |
| #endif |
| |
| |
| /* |
| * Helper function for detecting time outs, taking in account overflow. |
| * |
| * Returns true if the current time has elapsed beyond the specified interval. |
| */ |
| static INLINE boolean |
| os_time_timeout(int64_t start, |
| int64_t end, |
| int64_t curr) |
| { |
| if(start <= end) |
| return !(start <= curr && curr < end); |
| else |
| return !((start <= curr) || (curr < end)); |
| } |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _OS_TIME_H_ */ |