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#if defined(__i386__) || defined(__x86_64__)
typedef unsigned char slock_t;
#define HAS_TEST_AND_SET
#elif defined(__sparc__)
typedef unsigned char slock_t;
#define HAS_TEST_AND_SET
#elif defined(__powerpc64__)
typedef unsigned long slock_t;
#define HAS_TEST_AND_SET
#elif defined(__powerpc__)
typedef unsigned int slock_t;
#define HAS_TEST_AND_SET
#elif defined(__alpha__)
typedef long int slock_t;
#define HAS_TEST_AND_SET
#elif defined(__mips__)
typedef unsigned int slock_t;
#define HAS_TEST_AND_SET
#elif defined(__arm__)
typedef unsigned char slock_t;
#define HAS_TEST_AND_SET
#elif defined(__ia64__)
typedef unsigned int slock_t;
#define HAS_TEST_AND_SET
#elif defined(__s390__) || defined(__s390x__)
typedef unsigned int slock_t;
#define HAS_TEST_AND_SET
#elif defined(__mc68000__)
typedef unsigned char slock_t;
#define HAS_TEST_AND_SET
#endif
/*
* As of July 2007, all known versions of the Linux kernel will sometimes
* return EIDRM for a shmctl() operation when EINVAL is correct (it happens
* when the low-order 15 bits of the supplied shm ID match the slot number
* assigned to a newer shmem segment). We deal with this by assuming that
* EIDRM means EINVAL in PGSharedMemoryIsInUse(). This is reasonably safe
* since in fact Linux has no excuse for ever returning EIDRM; it doesn't
* track removed segments in a way that would allow distinguishing them from
* private ones. But someday that code might get upgraded, and we'd have
* to have a kernel version test here.
*/
#define HAVE_LINUX_EIDRM_BUG
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