| /* |
| Plan 9 from User Space src/lib9/time.c |
| http://code.swtch.com/plan9port/src/tip/src/lib9/time.c |
| |
| Copyright 2001-2007 Russ Cox. 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. |
| */ |
| #include <u.h> |
| #include <sys/time.h> |
| #include <time.h> |
| #ifndef __MINGW32__ |
| #include <sys/resource.h> |
| #endif |
| #define NOPLAN9DEFINES |
| #include <libc.h> |
| |
| long |
| p9times(long *t) |
| { |
| #ifdef __MINGW32__ |
| memset(t, 0, 4*sizeof(long)); |
| #else |
| struct rusage ru, cru; |
| |
| if(getrusage(0, &ru) < 0 || getrusage(-1, &cru) < 0) |
| return -1; |
| |
| t[0] = ru.ru_utime.tv_sec*1000 + ru.ru_utime.tv_usec/1000; |
| t[1] = ru.ru_stime.tv_sec*1000 + ru.ru_stime.tv_usec/1000; |
| t[2] = cru.ru_utime.tv_sec*1000 + cru.ru_utime.tv_usec/1000; |
| t[3] = cru.ru_stime.tv_sec*1000 + cru.ru_stime.tv_usec/1000; |
| #endif |
| |
| /* BUG */ |
| return t[0]+t[1]+t[2]+t[3]; |
| } |
| |
| double |
| p9cputime(void) |
| { |
| long t[4]; |
| double d; |
| |
| if(p9times(t) < 0) |
| return -1.0; |
| |
| d = (double)t[0]+(double)t[1]+(double)t[2]+(double)t[3]; |
| return d/1000.0; |
| } |