1  /* Helper code for POSIX timer implementation on NPTL.
       2     Copyright (C) 2000-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public License as
       7     published by the Free Software Foundation; either version 2.1 of the
       8     License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; see the file COPYING.LIB.  If
      17     not, see <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef _TIMER_ROUTINES_H
      20  #define _TIMER_ROUTINES_H	1
      21  
      22  #include <internaltypes.h>
      23  #include <string.h>
      24  
      25  /* Compare two pthread_attr_t thread attributes for exact equality.
      26     Returns 1 if they are equal, otherwise zero if they are not equal
      27     or contain illegal values.  This version is NPTL-specific for
      28     performance reason.  One could use the access functions to get the
      29     values of all the fields of the attribute structure.  */
      30  static inline int
      31  thread_attr_compare (const pthread_attr_t *left, const pthread_attr_t *right)
      32  {
      33    struct pthread_attr *ileft = (struct pthread_attr *) left;
      34    struct pthread_attr *iright = (struct pthread_attr *) right;
      35  
      36    return (ileft->flags == iright->flags
      37  	  && ileft->schedpolicy == iright->schedpolicy
      38  	  && (ileft->schedparam.sched_priority
      39  	      == iright->schedparam.sched_priority)
      40  	  && ileft->guardsize == iright->guardsize
      41  	  && ileft->stackaddr == iright->stackaddr
      42  	  && ileft->stacksize == iright->stacksize
      43  	  && ((ileft->cpuset == NULL && iright->cpuset == NULL)
      44  	      || (ileft->cpuset != NULL && iright->cpuset != NULL
      45  		  && ileft->cpusetsize == iright->cpusetsize
      46  		  && memcmp (ileft->cpuset, iright->cpuset,
      47  			     ileft->cpusetsize) == 0)));
      48  }
      49  
      50  #endif	/* timer_routines.h */