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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.20.1/] [gprof/] [hertz.c] - Rev 438
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/* * Copyright (c) 1983, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "gprof.h" #include "hertz.h" int hertz () { #ifdef HERTZ return HERTZ; #else /* ! defined (HERTZ) */ #ifdef HAVE_SETITIMER struct itimerval tim; tim.it_interval.tv_sec = 0; tim.it_interval.tv_usec = 1; tim.it_value.tv_sec = 0; tim.it_value.tv_usec = 0; setitimer (ITIMER_REAL, &tim, 0); setitimer (ITIMER_REAL, 0, &tim); if (tim.it_interval.tv_usec >= 2) { return 1000000 / tim.it_interval.tv_usec; } #endif /* ! defined (HAVE_SETITIMER) */ #if defined (HAVE_SYSCONF) && defined (_SC_CLK_TCK) return sysconf (_SC_CLK_TCK); #else /* ! defined (HAVE_SYSCONF) || ! defined (_SC_CLK_TCK) */ #ifdef __MSDOS__ return 18; #else /* ! defined (__MSDOS__) */ return HZ_WRONG; #endif /* ! defined (__MSDOS__) */ #endif /* ! defined (HAVE_SYSCONF) || ! defined (_SC_CLK_TCK) */ #endif /* ! defined (HERTZ) */ }
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