pid_t
__libc_fork (void)
{
pid_t pid;
struct used_handler
{
struct fork_handler *handler;
struct used_handler *next;
} *allp = NULL;
/* Run all the registered preparation handlers. In reverse order.
While doing this we build up a list of all the entries. */
struct fork_handler *runp;
while ((runp = __fork_handlers) != NULL)
{
/* Make sure we read from the current RUNP pointer. */
atomic_full_barrier ();
unsigned int oldval = runp->refcntr;
if (oldval == 0)
/* This means some other thread removed the list just after
the pointer has been loaded. Try again. Either the list
is empty or we can retry it. */
continue;
/* Bump the reference counter. */
if (atomic_compare_and_exchange_bool_acq (&__fork_handlers->refcntr,
oldval + 1, oldval))
/* The value changed, try again. */
continue;
/* We bumped the reference counter for the first entry in the
list. That means that none of the following entries will
just go away. The unloading code works in the order of the
list.
While executing the registered handlers we are building a
list of all the entries so that we can go backward later on. */
while (1)
{
/* Execute the handler if there is one. */
if (runp->prepare_handler != NULL)
runp->prepare_handler ();
/* Create a new element for the list. */
struct used_handler *newp
= (struct used_handler *) alloca (sizeof (*newp));
newp->handler = runp;
newp->next = allp;
allp = newp;
/* Advance to the next handler. */
runp = runp->next;
if (runp == NULL)
break;
/* Bump the reference counter for the next entry. */
atomic_increment (&runp->refcntr);
}
/* We are done. */
break;
}
__UCLIBC_IO_MUTEX_LOCK_CANCEL_UNSAFE(_stdio_openlist_add_lock);
#ifndef NDEBUG
pid_t ppid = THREAD_GETMEM (THREAD_SELF, tid);
#endif
/* We need to prevent the getpid() code to update the PID field so
that, if a signal arrives in the child very early and the signal
handler uses getpid(), the value returned is correct. */
pid_t parentpid = THREAD_GETMEM (THREAD_SELF, pid);
THREAD_SETMEM (THREAD_SELF, pid, -parentpid);
#ifdef ARCH_FORK
pid = ARCH_FORK ();
#else
# error "ARCH_FORK must be defined so that the CLONE_SETTID flag is used"
pid = INLINE_SYSCALL (fork, 0);
#endif
if (pid == 0)
{
struct pthread *self = THREAD_SELF;
assert (THREAD_GETMEM (self, tid) != ppid);
if (__fork_generation_pointer != NULL)
*__fork_generation_pointer += 4;
/* Adjust the PID field for the new process. */
THREAD_SETMEM (self, pid, THREAD_GETMEM (self, tid));
#if HP_TIMING_AVAIL
/* The CPU clock of the thread and process have to be set to zero. */
hp_timing_t now;
HP_TIMING_NOW (now);
THREAD_SETMEM (self, cpuclock_offset, now);
GL(dl_cpuclock_offset) = now;
#endif
/* Reset the file list. These are recursive mutexes. */
fresetlockfiles ();
/* Reset locks in the I/O code. */
STDIO_INIT_MUTEX(_stdio_openlist_add_lock);
/* XXX reset any locks in dynamic loader */
/* Run the handlers registered for the child. */
while (allp != NULL)
{
if (allp->handler->child_handler != NULL)
allp->handler->child_handler ();
/* Note that we do not have to wake any possible waiter.
This is the only thread in the new process. The count
may have been bumped up by other threads doing a fork.
We reset it to 1, to avoid waiting for non-existing
thread(s) to release the count. */
allp->handler->refcntr = 1;
/* XXX We could at this point look through the object pool
and mark all objects not on the __fork_handlers list as
unused. This is necessary in case the fork() happened
while another thread called dlclose() and that call had
to create a new list. */
allp = allp->next;
}
/* Initialize the fork lock. */
__fork_lock = LLL_LOCK_INITIALIZER;
}
else
{
assert (THREAD_GETMEM (THREAD_SELF, tid) == ppid);
/* Restore the PID value. */
THREAD_SETMEM (THREAD_SELF, pid, parentpid);
/* We execute this even if the 'fork' call failed. */
__UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(_stdio_openlist_add_lock);
/* Run the handlers registered for the parent. */
while (allp != NULL)
{
if (allp->handler->parent_handler != NULL)
allp->handler->parent_handler ();
if (atomic_decrement_and_test (&allp->handler->refcntr)
&& allp->handler->need_signal)
lll_futex_wake (allp->handler->refcntr, 1, LLL_PRIVATE);
allp = allp->next;
}
}
return pid;
}
/* Test various atomic.h macros. */
static int
do_test (void)
{
atomic_t mem, expected;
int ret = 0;
#ifdef atomic_compare_and_exchange_val_acq
mem = 24;
if (atomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
|| mem != 35)
{
puts ("atomic_compare_and_exchange_val_acq test 1 failed");
ret = 1;
}
mem = 12;
if (atomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
|| mem != 12)
{
puts ("atomic_compare_and_exchange_val_acq test 2 failed");
ret = 1;
}
mem = -15;
if (atomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
|| mem != -56)
{
puts ("atomic_compare_and_exchange_val_acq test 3 failed");
ret = 1;
}
mem = -1;
if (atomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
|| mem != -1)
{
puts ("atomic_compare_and_exchange_val_acq test 4 failed");
ret = 1;
}
#endif
mem = 24;
if (atomic_compare_and_exchange_bool_acq (&mem, 35, 24)
|| mem != 35)
{
puts ("atomic_compare_and_exchange_bool_acq test 1 failed");
ret = 1;
}
mem = 12;
if (! atomic_compare_and_exchange_bool_acq (&mem, 10, 15)
|| mem != 12)
{
puts ("atomic_compare_and_exchange_bool_acq test 2 failed");
ret = 1;
}
mem = -15;
if (atomic_compare_and_exchange_bool_acq (&mem, -56, -15)
|| mem != -56)
{
puts ("atomic_compare_and_exchange_bool_acq test 3 failed");
ret = 1;
}
mem = -1;
if (! atomic_compare_and_exchange_bool_acq (&mem, 17, 0)
|| mem != -1)
{
puts ("atomic_compare_and_exchange_bool_acq test 4 failed");
ret = 1;
}
mem = 64;
if (atomic_exchange_acq (&mem, 31) != 64
|| mem != 31)
{
puts ("atomic_exchange_acq test failed");
ret = 1;
}
mem = 2;
if (atomic_exchange_and_add (&mem, 11) != 2
|| mem != 13)
{
puts ("atomic_exchange_and_add test failed");
ret = 1;
}
mem = 2;
if (atomic_exchange_and_add_acq (&mem, 11) != 2
|| mem != 13)
{
puts ("atomic_exchange_and_add test failed");
ret = 1;
}
mem = 2;
if (atomic_exchange_and_add_rel (&mem, 11) != 2
|| mem != 13)
{
puts ("atomic_exchange_and_add test failed");
ret = 1;
}
mem = -21;
atomic_add (&mem, 22);
if (mem != 1)
{
puts ("atomic_add test failed");
ret = 1;
}
mem = -1;
atomic_increment (&mem);
if (mem != 0)
{
puts ("atomic_increment test failed");
ret = 1;
}
mem = 2;
if (atomic_increment_val (&mem) != 3)
{
puts ("atomic_increment_val test failed");
ret = 1;
}
mem = 0;
if (atomic_increment_and_test (&mem)
|| mem != 1)
{
puts ("atomic_increment_and_test test 1 failed");
ret = 1;
}
mem = 35;
if (atomic_increment_and_test (&mem)
|| mem != 36)
{
puts ("atomic_increment_and_test test 2 failed");
ret = 1;
}
mem = -1;
if (! atomic_increment_and_test (&mem)
|| mem != 0)
{
puts ("atomic_increment_and_test test 3 failed");
ret = 1;
}
mem = 17;
atomic_decrement (&mem);
if (mem != 16)
{
puts ("atomic_decrement test failed");
ret = 1;
}
if (atomic_decrement_val (&mem) != 15)
{
puts ("atomic_decrement_val test failed");
ret = 1;
}
mem = 0;
if (atomic_decrement_and_test (&mem)
|| mem != -1)
{
puts ("atomic_decrement_and_test test 1 failed");
ret = 1;
}
mem = 15;
if (atomic_decrement_and_test (&mem)
|| mem != 14)
{
puts ("atomic_decrement_and_test test 2 failed");
ret = 1;
}
mem = 1;
if (! atomic_decrement_and_test (&mem)
|| mem != 0)
{
puts ("atomic_decrement_and_test test 3 failed");
ret = 1;
}
mem = 1;
if (atomic_decrement_if_positive (&mem) != 1
|| mem != 0)
{
puts ("atomic_decrement_if_positive test 1 failed");
ret = 1;
}
mem = 0;
if (atomic_decrement_if_positive (&mem) != 0
|| mem != 0)
{
puts ("atomic_decrement_if_positive test 2 failed");
ret = 1;
}
mem = -1;
if (atomic_decrement_if_positive (&mem) != -1
|| mem != -1)
{
puts ("atomic_decrement_if_positive test 3 failed");
ret = 1;
}
mem = -12;
if (! atomic_add_negative (&mem, 10)
|| mem != -2)
{
puts ("atomic_add_negative test 1 failed");
ret = 1;
}
mem = 0;
if (atomic_add_negative (&mem, 100)
|| mem != 100)
{
puts ("atomic_add_negative test 2 failed");
ret = 1;
}
mem = 15;
if (atomic_add_negative (&mem, -10)
|| mem != 5)
{
puts ("atomic_add_negative test 3 failed");
ret = 1;
}
mem = -12;
if (atomic_add_negative (&mem, 14)
|| mem != 2)
{
puts ("atomic_add_negative test 4 failed");
ret = 1;
}
mem = 0;
if (! atomic_add_negative (&mem, -1)
|| mem != -1)
{
puts ("atomic_add_negative test 5 failed");
ret = 1;
}
mem = -31;
if (atomic_add_negative (&mem, 31)
|| mem != 0)
{
puts ("atomic_add_negative test 6 failed");
ret = 1;
}
mem = -34;
if (atomic_add_zero (&mem, 31)
|| mem != -3)
{
puts ("atomic_add_zero test 1 failed");
ret = 1;
}
mem = -36;
if (! atomic_add_zero (&mem, 36)
|| mem != 0)
{
puts ("atomic_add_zero test 2 failed");
ret = 1;
}
mem = 113;
if (atomic_add_zero (&mem, -13)
|| mem != 100)
{
puts ("atomic_add_zero test 3 failed");
ret = 1;
}
mem = -18;
if (atomic_add_zero (&mem, 20)
|| mem != 2)
{
puts ("atomic_add_zero test 4 failed");
ret = 1;
}
mem = 10;
if (atomic_add_zero (&mem, -20)
|| mem != -10)
{
puts ("atomic_add_zero test 5 failed");
ret = 1;
}
mem = 10;
if (! atomic_add_zero (&mem, -10)
|| mem != 0)
{
puts ("atomic_add_zero test 6 failed");
ret = 1;
}
mem = 0;
atomic_bit_set (&mem, 1);
if (mem != 2)
{
puts ("atomic_bit_set test 1 failed");
ret = 1;
}
mem = 8;
atomic_bit_set (&mem, 3);
if (mem != 8)
{
puts ("atomic_bit_set test 2 failed");
ret = 1;
}
#ifdef TEST_ATOMIC64
mem = 16;
atomic_bit_set (&mem, 35);
if (mem != 0x800000010LL)
{
puts ("atomic_bit_set test 3 failed");
ret = 1;
}
#endif
mem = 0;
if (atomic_bit_test_set (&mem, 1)
|| mem != 2)
{
puts ("atomic_bit_test_set test 1 failed");
ret = 1;
}
mem = 8;
if (! atomic_bit_test_set (&mem, 3)
|| mem != 8)
{
puts ("atomic_bit_test_set test 2 failed");
ret = 1;
}
#ifdef TEST_ATOMIC64
mem = 16;
if (atomic_bit_test_set (&mem, 35)
|| mem != 0x800000010LL)
{
puts ("atomic_bit_test_set test 3 failed");
ret = 1;
}
mem = 0x100000000LL;
if (! atomic_bit_test_set (&mem, 32)
|| mem != 0x100000000LL)
{
puts ("atomic_bit_test_set test 4 failed");
ret = 1;
}
#endif
#ifdef catomic_compare_and_exchange_val_acq
mem = 24;
if (catomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
|| mem != 35)
{
puts ("catomic_compare_and_exchange_val_acq test 1 failed");
ret = 1;
}
mem = 12;
if (catomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
|| mem != 12)
{
puts ("catomic_compare_and_exchange_val_acq test 2 failed");
ret = 1;
}
mem = -15;
if (catomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
|| mem != -56)
{
puts ("catomic_compare_and_exchange_val_acq test 3 failed");
ret = 1;
}
mem = -1;
if (catomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
|| mem != -1)
{
puts ("catomic_compare_and_exchange_val_acq test 4 failed");
ret = 1;
}
#endif
mem = 24;
if (catomic_compare_and_exchange_bool_acq (&mem, 35, 24)
|| mem != 35)
{
puts ("catomic_compare_and_exchange_bool_acq test 1 failed");
ret = 1;
}
mem = 12;
if (! catomic_compare_and_exchange_bool_acq (&mem, 10, 15)
|| mem != 12)
{
puts ("catomic_compare_and_exchange_bool_acq test 2 failed");
ret = 1;
}
mem = -15;
if (catomic_compare_and_exchange_bool_acq (&mem, -56, -15)
|| mem != -56)
{
puts ("catomic_compare_and_exchange_bool_acq test 3 failed");
ret = 1;
}
mem = -1;
if (! catomic_compare_and_exchange_bool_acq (&mem, 17, 0)
|| mem != -1)
{
puts ("catomic_compare_and_exchange_bool_acq test 4 failed");
ret = 1;
}
mem = 2;
if (catomic_exchange_and_add (&mem, 11) != 2
|| mem != 13)
{
puts ("catomic_exchange_and_add test failed");
ret = 1;
}
mem = -21;
catomic_add (&mem, 22);
if (mem != 1)
{
puts ("catomic_add test failed");
ret = 1;
}
mem = -1;
catomic_increment (&mem);
if (mem != 0)
{
puts ("catomic_increment test failed");
ret = 1;
}
mem = 2;
if (catomic_increment_val (&mem) != 3)
{
puts ("catomic_increment_val test failed");
ret = 1;
}
mem = 17;
catomic_decrement (&mem);
if (mem != 16)
{
puts ("catomic_decrement test failed");
ret = 1;
}
if (catomic_decrement_val (&mem) != 15)
{
puts ("catomic_decrement_val test failed");
ret = 1;
}
/* Tests for C11-like atomics. */
mem = 11;
if (atomic_load_relaxed (&mem) != 11 || atomic_load_acquire (&mem) != 11)
{
puts ("atomic_load_{relaxed,acquire} test failed");
ret = 1;
}
atomic_store_relaxed (&mem, 12);
if (mem != 12)
{
puts ("atomic_store_relaxed test failed");
ret = 1;
}
atomic_store_release (&mem, 13);
if (mem != 13)
{
puts ("atomic_store_release test failed");
ret = 1;
}
mem = 14;
expected = 14;
if (!atomic_compare_exchange_weak_relaxed (&mem, &expected, 25)
|| mem != 25 || expected != 14)
{
puts ("atomic_compare_exchange_weak_relaxed test 1 failed");
ret = 1;
}
if (atomic_compare_exchange_weak_relaxed (&mem, &expected, 14)
|| mem != 25 || expected != 25)
{
puts ("atomic_compare_exchange_weak_relaxed test 2 failed");
ret = 1;
}
mem = 14;
expected = 14;
if (!atomic_compare_exchange_weak_acquire (&mem, &expected, 25)
|| mem != 25 || expected != 14)
{
puts ("atomic_compare_exchange_weak_acquire test 1 failed");
ret = 1;
}
if (atomic_compare_exchange_weak_acquire (&mem, &expected, 14)
|| mem != 25 || expected != 25)
{
puts ("atomic_compare_exchange_weak_acquire test 2 failed");
ret = 1;
}
mem = 14;
expected = 14;
if (!atomic_compare_exchange_weak_release (&mem, &expected, 25)
|| mem != 25 || expected != 14)
{
puts ("atomic_compare_exchange_weak_release test 1 failed");
ret = 1;
}
if (atomic_compare_exchange_weak_release (&mem, &expected, 14)
|| mem != 25 || expected != 25)
{
puts ("atomic_compare_exchange_weak_release test 2 failed");
ret = 1;
}
mem = 23;
if (atomic_exchange_acquire (&mem, 42) != 23 || mem != 42)
{
puts ("atomic_exchange_acquire test failed");
ret = 1;
}
mem = 23;
if (atomic_exchange_release (&mem, 42) != 23 || mem != 42)
{
puts ("atomic_exchange_release test failed");
ret = 1;
}
mem = 23;
if (atomic_fetch_add_relaxed (&mem, 1) != 23 || mem != 24)
{
puts ("atomic_fetch_add_relaxed test failed");
ret = 1;
}
mem = 23;
if (atomic_fetch_add_acquire (&mem, 1) != 23 || mem != 24)
{
puts ("atomic_fetch_add_acquire test failed");
ret = 1;
}
mem = 23;
if (atomic_fetch_add_release (&mem, 1) != 23 || mem != 24)
{
puts ("atomic_fetch_add_release test failed");
ret = 1;
}
mem = 23;
if (atomic_fetch_add_acq_rel (&mem, 1) != 23 || mem != 24)
{
puts ("atomic_fetch_add_acq_rel test failed");
ret = 1;
}
mem = 3;
if (atomic_fetch_and_acquire (&mem, 2) != 3 || mem != 2)
{
puts ("atomic_fetch_and_acquire test failed");
ret = 1;
}
mem = 4;
if (atomic_fetch_or_relaxed (&mem, 2) != 4 || mem != 6)
{
puts ("atomic_fetch_or_relaxed test failed");
ret = 1;
}
mem = 4;
if (atomic_fetch_or_acquire (&mem, 2) != 4 || mem != 6)
{
puts ("atomic_fetch_or_acquire test failed");
ret = 1;
}
/* This is a single-threaded test, so we can't test the effects of the
fences. */
atomic_thread_fence_acquire ();
atomic_thread_fence_release ();
atomic_thread_fence_seq_cst ();
return ret;
}
/* Test various atomic.h macros. */
static int
do_test (void)
{
atomic_t mem;
int ret = 0;
#ifdef atomic_compare_and_exchange_val_acq
mem = 24;
if (atomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
|| mem != 35)
{
puts ("atomic_compare_and_exchange_val_acq test 1 failed");
ret = 1;
}
mem = 12;
if (atomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
|| mem != 12)
{
puts ("atomic_compare_and_exchange_val_acq test 2 failed");
ret = 1;
}
mem = -15;
if (atomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
|| mem != -56)
{
puts ("atomic_compare_and_exchange_val_acq test 3 failed");
ret = 1;
}
mem = -1;
if (atomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
|| mem != -1)
{
puts ("atomic_compare_and_exchange_val_acq test 4 failed");
ret = 1;
}
#endif
mem = 24;
if (atomic_compare_and_exchange_bool_acq (&mem, 35, 24)
|| mem != 35)
{
puts ("atomic_compare_and_exchange_bool_acq test 1 failed");
ret = 1;
}
mem = 12;
if (! atomic_compare_and_exchange_bool_acq (&mem, 10, 15)
|| mem != 12)
{
puts ("atomic_compare_and_exchange_bool_acq test 2 failed");
ret = 1;
}
mem = -15;
if (atomic_compare_and_exchange_bool_acq (&mem, -56, -15)
|| mem != -56)
{
puts ("atomic_compare_and_exchange_bool_acq test 3 failed");
ret = 1;
}
mem = -1;
if (! atomic_compare_and_exchange_bool_acq (&mem, 17, 0)
|| mem != -1)
{
puts ("atomic_compare_and_exchange_bool_acq test 4 failed");
ret = 1;
}
mem = 64;
if (atomic_exchange_acq (&mem, 31) != 64
|| mem != 31)
{
puts ("atomic_exchange_acq test failed");
ret = 1;
}
mem = 2;
if (atomic_exchange_and_add (&mem, 11) != 2
|| mem != 13)
{
puts ("atomic_exchange_and_add test failed");
ret = 1;
}
mem = -21;
atomic_add (&mem, 22);
if (mem != 1)
{
puts ("atomic_add test failed");
ret = 1;
}
mem = -1;
atomic_increment (&mem);
if (mem != 0)
{
puts ("atomic_increment test failed");
ret = 1;
}
mem = 2;
if (atomic_increment_val (&mem) != 3)
{
puts ("atomic_increment_val test failed");
ret = 1;
}
mem = 0;
if (atomic_increment_and_test (&mem)
|| mem != 1)
{
puts ("atomic_increment_and_test test 1 failed");
ret = 1;
}
mem = 35;
if (atomic_increment_and_test (&mem)
|| mem != 36)
{
puts ("atomic_increment_and_test test 2 failed");
ret = 1;
}
mem = -1;
if (! atomic_increment_and_test (&mem)
|| mem != 0)
{
puts ("atomic_increment_and_test test 3 failed");
ret = 1;
}
mem = 17;
atomic_decrement (&mem);
if (mem != 16)
{
puts ("atomic_decrement test failed");
ret = 1;
}
if (atomic_decrement_val (&mem) != 15)
{
puts ("atomic_decrement_val test failed");
ret = 1;
}
mem = 0;
if (atomic_decrement_and_test (&mem)
|| mem != -1)
{
puts ("atomic_decrement_and_test test 1 failed");
ret = 1;
}
mem = 15;
if (atomic_decrement_and_test (&mem)
|| mem != 14)
{
puts ("atomic_decrement_and_test test 2 failed");
ret = 1;
}
mem = 1;
if (! atomic_decrement_and_test (&mem)
|| mem != 0)
{
puts ("atomic_decrement_and_test test 3 failed");
ret = 1;
}
mem = 1;
if (atomic_decrement_if_positive (&mem) != 1
|| mem != 0)
{
puts ("atomic_decrement_if_positive test 1 failed");
ret = 1;
}
mem = 0;
if (atomic_decrement_if_positive (&mem) != 0
|| mem != 0)
{
puts ("atomic_decrement_if_positive test 2 failed");
ret = 1;
}
mem = -1;
if (atomic_decrement_if_positive (&mem) != -1
|| mem != -1)
{
puts ("atomic_decrement_if_positive test 3 failed");
ret = 1;
}
mem = -12;
if (! atomic_add_negative (&mem, 10)
|| mem != -2)
{
puts ("atomic_add_negative test 1 failed");
ret = 1;
}
mem = 0;
if (atomic_add_negative (&mem, 100)
|| mem != 100)
{
puts ("atomic_add_negative test 2 failed");
ret = 1;
}
mem = 15;
if (atomic_add_negative (&mem, -10)
|| mem != 5)
{
puts ("atomic_add_negative test 3 failed");
ret = 1;
}
mem = -12;
if (atomic_add_negative (&mem, 14)
|| mem != 2)
{
puts ("atomic_add_negative test 4 failed");
ret = 1;
}
mem = 0;
if (! atomic_add_negative (&mem, -1)
|| mem != -1)
{
puts ("atomic_add_negative test 5 failed");
ret = 1;
}
mem = -31;
if (atomic_add_negative (&mem, 31)
|| mem != 0)
{
puts ("atomic_add_negative test 6 failed");
ret = 1;
}
mem = -34;
if (atomic_add_zero (&mem, 31)
|| mem != -3)
{
puts ("atomic_add_zero test 1 failed");
ret = 1;
}
mem = -36;
if (! atomic_add_zero (&mem, 36)
|| mem != 0)
{
puts ("atomic_add_zero test 2 failed");
ret = 1;
}
mem = 113;
if (atomic_add_zero (&mem, -13)
|| mem != 100)
{
puts ("atomic_add_zero test 3 failed");
ret = 1;
}
mem = -18;
if (atomic_add_zero (&mem, 20)
|| mem != 2)
{
puts ("atomic_add_zero test 4 failed");
ret = 1;
}
mem = 10;
if (atomic_add_zero (&mem, -20)
|| mem != -10)
{
puts ("atomic_add_zero test 5 failed");
ret = 1;
}
mem = 10;
if (! atomic_add_zero (&mem, -10)
|| mem != 0)
{
puts ("atomic_add_zero test 6 failed");
ret = 1;
}
mem = 0;
atomic_bit_set (&mem, 1);
if (mem != 2)
{
puts ("atomic_bit_set test 1 failed");
ret = 1;
}
mem = 8;
atomic_bit_set (&mem, 3);
if (mem != 8)
{
puts ("atomic_bit_set test 2 failed");
ret = 1;
}
#ifdef TEST_ATOMIC64
mem = 16;
atomic_bit_set (&mem, 35);
if (mem != 0x800000010LL)
{
puts ("atomic_bit_set test 3 failed");
ret = 1;
}
#endif
mem = 0;
if (atomic_bit_test_set (&mem, 1)
|| mem != 2)
{
puts ("atomic_bit_test_set test 1 failed");
ret = 1;
}
mem = 8;
if (! atomic_bit_test_set (&mem, 3)
|| mem != 8)
{
puts ("atomic_bit_test_set test 2 failed");
ret = 1;
}
#ifdef TEST_ATOMIC64
mem = 16;
if (atomic_bit_test_set (&mem, 35)
|| mem != 0x800000010LL)
{
puts ("atomic_bit_test_set test 3 failed");
ret = 1;
}
mem = 0x100000000LL;
if (! atomic_bit_test_set (&mem, 32)
|| mem != 0x100000000LL)
{
puts ("atomic_bit_test_set test 4 failed");
ret = 1;
}
#endif
#ifdef catomic_compare_and_exchange_val_acq
mem = 24;
if (catomic_compare_and_exchange_val_acq (&mem, 35, 24) != 24
|| mem != 35)
{
puts ("catomic_compare_and_exchange_val_acq test 1 failed");
ret = 1;
}
mem = 12;
if (catomic_compare_and_exchange_val_acq (&mem, 10, 15) != 12
|| mem != 12)
{
puts ("catomic_compare_and_exchange_val_acq test 2 failed");
ret = 1;
}
mem = -15;
if (catomic_compare_and_exchange_val_acq (&mem, -56, -15) != -15
|| mem != -56)
{
puts ("catomic_compare_and_exchange_val_acq test 3 failed");
ret = 1;
}
mem = -1;
if (catomic_compare_and_exchange_val_acq (&mem, 17, 0) != -1
|| mem != -1)
{
puts ("catomic_compare_and_exchange_val_acq test 4 failed");
ret = 1;
}
#endif
mem = 24;
if (catomic_compare_and_exchange_bool_acq (&mem, 35, 24)
|| mem != 35)
{
puts ("catomic_compare_and_exchange_bool_acq test 1 failed");
ret = 1;
}
mem = 12;
if (! catomic_compare_and_exchange_bool_acq (&mem, 10, 15)
|| mem != 12)
{
puts ("catomic_compare_and_exchange_bool_acq test 2 failed");
ret = 1;
}
mem = -15;
if (catomic_compare_and_exchange_bool_acq (&mem, -56, -15)
|| mem != -56)
{
puts ("catomic_compare_and_exchange_bool_acq test 3 failed");
ret = 1;
}
mem = -1;
if (! catomic_compare_and_exchange_bool_acq (&mem, 17, 0)
|| mem != -1)
{
puts ("catomic_compare_and_exchange_bool_acq test 4 failed");
ret = 1;
}
mem = 2;
if (catomic_exchange_and_add (&mem, 11) != 2
|| mem != 13)
{
puts ("catomic_exchange_and_add test failed");
ret = 1;
}
mem = -21;
catomic_add (&mem, 22);
if (mem != 1)
{
puts ("catomic_add test failed");
ret = 1;
}
mem = -1;
catomic_increment (&mem);
if (mem != 0)
{
puts ("catomic_increment test failed");
ret = 1;
}
mem = 2;
if (catomic_increment_val (&mem) != 3)
{
puts ("catomic_increment_val test failed");
ret = 1;
}
mem = 17;
catomic_decrement (&mem);
if (mem != 16)
{
puts ("catomic_decrement test failed");
ret = 1;
}
if (catomic_decrement_val (&mem) != 15)
{
puts ("catomic_decrement_val test failed");
ret = 1;
}
return ret;
}
