//#define _KERNEL
#include <unistd.h>
#include <limits.h>
#include <sys/param.h>
#include <semaphore.h>
#include <stdio.h>

// By Philip Semanchuk for posix_ipc and http://bugs.python.org/issue3110

// OpenSolaris 2008.05 WITHOUT #define _KERNEL:
// SEM_VALUE_MAX is undefined
// _SEM_VALUE_MAX is undefined
// sysconf(_SC_SEM_VALUE_MAX) = 2147483647
// _POSIX_SEM_VALUE_MAX = 32767
// PATCH_SEM_VALUE_MAX = 2147483647

// OpenSolaris 2008.05 WITH #define _KERNEL:
// SEM_VALUE_MAX is undefined
// _SEM_VALUE_MAX = 2147483647
// sysconf(_SC_SEM_VALUE_MAX) = 2147483647
// _POSIX_SEM_VALUE_MAX = 32767
// PATCH_SEM_VALUE_MAX = 2147483647

// OS X 10.5.5:
// SEM_VALUE_MAX = 32767
// _SEM_VALUE_MAX is undefined
// sysconf(_SC_SEM_VALUE_MAX) = 32767
// _POSIX_SEM_VALUE_MAX = 32767
// PATCH_SEM_VALUE_MAX = 32767

// Some version of Linux (RHEL I think):
// SEM_VALUE_MAX = 2147483647
// _SEM_VALUE_MAX is undefined
// sysconf(_SC_SEM_VALUE_MAX) = -1
// _POSIX_SEM_VALUE_MAX = 32767
// PATCH_SEM_VALUE_MAX = 2147483647

// Ubuntu 8.04
// SEM_VALUE_MAX = 2147483647
// _SEM_VALUE_MAX is undefined
// sysconf(_SC_SEM_VALUE_MAX) = 2147483647
// _POSIX_SEM_VALUE_MAX = 32767
// PATCH_SEM_VALUE_MAX = 2147483647

// FreeBSD 7 (/usr/src/sys/conf/NOTES says, 
//            "p1003_1b_semaphores are very experimental")
// SEM_VALUE_MAX = -1   <== This is (~0U)
// _SEM_VALUE_MAX is undefined
// sysconf(_SC_SEM_VALUE_MAX) = -1
// _POSIX_SEM_VALUE_MAX = 32767
// PATCH_SEM_VALUE_MAX = -1



int main() {
    
#ifdef SEM_VALUE_MAX
    printf("SEM_VALUE_MAX = %ld\n", (long)SEM_VALUE_MAX);
#else
    printf("SEM_VALUE_MAX is undefined\n");
#endif

#ifdef _SEM_VALUE_MAX
    printf("_SEM_VALUE_MAX = %ld\n", (long)_SEM_VALUE_MAX);
#else
    printf("_SEM_VALUE_MAX is undefined\n");
#endif

#ifdef _SC_SEM_VALUE_MAX
    printf("sysconf(_SC_SEM_VALUE_MAX) = %ld\n", sysconf(_SC_SEM_VALUE_MAX));
#else
    printf("_SC_SEM_VALUE_MAX is undefined\n");
#endif

#ifdef _POSIX_SEM_VALUE_MAX
    printf("_POSIX_SEM_VALUE_MAX = %ld\n", (long)_POSIX_SEM_VALUE_MAX);
#else
    printf("_POSIX_SEM_VALUE_MAX is undefined\n");
#endif

#ifndef SEM_VALUE_MAX
#  ifdef _SEM_VALUE_MAX
#    define PATCH_SEM_VALUE_MAX _SEM_VALUE_MAX
#  else
#    define PATCH_SEM_VALUE_MAX INT_MAX
#  endif
#else 
#    define PATCH_SEM_VALUE_MAX SEM_VALUE_MAX
#endif

    printf("PATCH_SEM_VALUE_MAX = %ld\n", (long)PATCH_SEM_VALUE_MAX);

    return 0;
}