void
test_or ()
{
v = 0;
count = 1;
__atomic_or_fetch (&v, count, __ATOMIC_RELAXED);
if (v != 1)
abort ();
count *= 2;
__atomic_fetch_or (&v, count, __ATOMIC_CONSUME);
if (v != 3)
abort ();
count *= 2;
__atomic_or_fetch (&v, 4, __ATOMIC_ACQUIRE);
if (v != 7)
abort ();
count *= 2;
__atomic_fetch_or (&v, 8, __ATOMIC_RELEASE);
if (v != 15)
abort ();
count *= 2;
__atomic_or_fetch (&v, count, __ATOMIC_ACQ_REL);
if (v != 31)
abort ();
count *= 2;
__atomic_fetch_or (&v, count, __ATOMIC_SEQ_CST);
if (v != 63)
abort ();
}
// Expand #1:
// wait if other threads already have token. return if this thread is the first.
int tree_simple_begin_expand(TreeBlock* parent, BlockOffset parent_offset, TreeBlock **child) {
BlockBits expansion_before = __atomic_fetch_or(
&parent->expansion,
BIT(parent_offset),
__ATOMIC_ACQ_REL);
if (!TEST_BIT(expansion_before, parent_offset)) {
*child = NULL;
return EXPAND_STATUS_FIRST; // we've got to do it
}
ChildInfo* cinfo = &parent->children[parent_offset];
TreeBlock* c;
// Wait if no one has done it yet.
if ((c = __atomic_load_n(&cinfo->child, __ATOMIC_ACQUIRE)) == NULL) {
// We've got to wait.
for (;;) {
EventCountKey key = event_count_prepare(&cinfo->event_count);
if ((c = __atomic_load_n(&cinfo->child, __ATOMIC_ACQUIRE)) != NULL) {
event_count_cancel(&cinfo->event_count);
break;
}
event_count_wait(&cinfo->event_count, key);
}
}
*child = c;
return EXPAND_STATUS_DONE;
}
void ObjectPool::bitset(uint64_t *ptr, size_t pos, char val)
{
if (val)
__atomic_fetch_or(ptr, (uint64_t) 1 << pos, __ATOMIC_SEQ_CST);
else
__atomic_fetch_and(ptr, ~((uint64_t)1 << pos), __ATOMIC_SEQ_CST);
}
void test_atomic_bool (_Atomic _Bool *a)
{
enum { SEQ_CST = __ATOMIC_SEQ_CST };
__atomic_fetch_add (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_fetch_add." } */
__atomic_fetch_sub (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_fetch_sub." } */
__atomic_fetch_and (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_fetch_and." } */
__atomic_fetch_xor (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_fetch_xor." } */
__atomic_fetch_or (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_fetch_or." } */
__atomic_fetch_nand (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_fetch_nand." } */
__atomic_add_fetch (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_add_fetch." } */
__atomic_sub_fetch (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_sub_fetch." } */
__atomic_and_fetch (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_and_fetch." } */
__atomic_xor_fetch (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_xor_fetch." } */
__atomic_or_fetch (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_or_fetch." } */
__atomic_nand_fetch (a, 1, SEQ_CST); /* { dg-error "operand type ._Atomic _Bool \\*. is incompatible with argument 1 of .__atomic_nand_fetch." } */
/* The following are valid and must be accepted. */
_Bool val = 0, ret = 0;
__atomic_exchange (a, &val, &ret, SEQ_CST);
__atomic_exchange_n (a, val, SEQ_CST);
__atomic_compare_exchange (a, &val, &ret, !1, SEQ_CST, SEQ_CST);
__atomic_compare_exchange_n (a, &val, ret, !1, SEQ_CST, SEQ_CST);
__atomic_test_and_set (a, SEQ_CST);
__atomic_clear (a, SEQ_CST);
}
void
test_fetch_or ()
{
v = 0;
count = 1;
if (__atomic_fetch_or (&v, count, __ATOMIC_RELAXED) != 0)
abort ();
count *= 2;
if (__atomic_fetch_or (&v, 2, __ATOMIC_CONSUME) != 1)
abort ();
count *= 2;
if (__atomic_fetch_or (&v, count, __ATOMIC_ACQUIRE) != 3)
abort ();
count *= 2;
if (__atomic_fetch_or (&v, 8, __ATOMIC_RELEASE) != 7)
abort ();
count *= 2;
if (__atomic_fetch_or (&v, count, __ATOMIC_ACQ_REL) != 15)
abort ();
count *= 2;
if (__atomic_fetch_or (&v, count, __ATOMIC_SEQ_CST) != 31)
abort ();
}
uint64 host_atomic_or(uint64* value, const uint64 op)
{
#if defined(__GNUC__)
return __atomic_fetch_or( value, op, __ATOMIC_RELAXED );
#else
Mutex mutex;
ScopedLock lock( &mutex );
const uint64 old = *value;
*value |= op;
return old;
#endif
}
// Expand #2:
// return if other threads already have tokens and are expanding.
int tree_simple_begin_expand_nowait(TreeBlock* parent, BlockOffset parent_offset, TreeBlock **child) {
BlockBits expansion_before = __atomic_fetch_or(
&parent->expansion,
BIT(parent_offset),
__ATOMIC_ACQ_REL);
if (!TEST_BIT(expansion_before, parent_offset)) {
*child = NULL;
return EXPAND_STATUS_FIRST; // we've got to do it
}
ChildInfo* cinfo = &parent->children[parent_offset];
// Wait if no one has done it yet.
if ((*child = __atomic_load_n(&cinfo->child, __ATOMIC_ACQUIRE)) == NULL) return EXPAND_STATUS_EXPANDING;
else return EXPAND_STATUS_DONE;
}
__host__ __device__
typename enable_if<
sizeof(Integer64) == 8,
Integer64
>::type
atomic_fetch_or(Integer64 *x, Integer64 y)
{
#if defined(__CUDA_ARCH__)
return atomicOr(x, y);
#elif defined(__GNUC__)
return __atomic_fetch_or(x, y, __ATOMIC_SEQ_CST);
#elif defined(_MSC_VER)
return InterlockedOr64(x, y);
#elif defined(__clang__)
return __c11_atomic_fetch_or(x, y)
#else
#error "No atomic_fetch_or implementation."
#endif
}
static inline void arch_perfBtsCount(honggfuzz_t * hfuzz, fuzzer_t * fuzzer)
{
struct perf_event_mmap_page *pem = (struct perf_event_mmap_page *)fuzzer->linux.perfMmapBuf;
struct bts_branch {
uint64_t from;
uint64_t to;
uint64_t misc;
};
struct bts_branch *br = (struct bts_branch *)fuzzer->linux.perfMmapAux;
for (; br < ((struct bts_branch *)(fuzzer->linux.perfMmapAux + pem->aux_head)); br++) {
/*
* Kernel sometimes reports branches from the kernel (iret), we are not interested in that as it
* makes the whole concept of unique branch counting less predictable
*/
if (__builtin_expect(br->from > 0xFFFFFFFF00000000, false)
|| __builtin_expect(br->to > 0xFFFFFFFF00000000, false)) {
LOG_D("Adding branch %#018" PRIx64 " - %#018" PRIx64, br->from, br->to);
continue;
}
if (br->from >= hfuzz->linux.dynamicCutOffAddr || br->to >= hfuzz->linux.dynamicCutOffAddr) {
continue;
}
register size_t pos = 0UL;
if (br->to == 0ULL) {
pos = br->from % (hfuzz->bbMapSz * 8);
} else {
pos = (br->from * br->to) % (hfuzz->bbMapSz * 8);
}
size_t byteOff = pos / 8;
uint8_t bitSet = (uint8_t) (1 << (pos % 8));
register uint8_t prev =
__atomic_fetch_or(&(hfuzz->bbMap[byteOff]), bitSet, __ATOMIC_SEQ_CST);
if (!(prev & bitSet)) {
fuzzer->linux.hwCnts.newBBCnt++;
}
}
}
P_LIB_API puint
p_atomic_int_or (volatile puint *atomic,
puint val)
{
return (puint) __atomic_fetch_or (atomic, val, __ATOMIC_SEQ_CST);
}
BOOL cnn_data_fetch_set_evaluated_bit(CNNData* data, unsigned char bit) {
unsigned char value_before = __atomic_fetch_or(&data->evaluated, BIT(bit), __ATOMIC_RELEASE);
event_count_broadcast(&data->event_counts[bit]);
return TEST_BIT(value_before, bit) ? TRUE : FALSE;
}
short
short_fetch_ior_release (short *ptr, int value)
{
return __atomic_fetch_or (ptr, value, __ATOMIC_RELEASE);
}
char
char_fetch_ior_release (char *ptr, int value)
{
return __atomic_fetch_or (ptr, value, __ATOMIC_RELEASE);
}
__int128_t
quad_fetch_ior_release (__int128_t *ptr, __int128_t value)
{
return __atomic_fetch_or (ptr, value, __ATOMIC_RELEASE);
}
long
long_fetch_ior_release (long *ptr, long value)
{
return __atomic_fetch_or (ptr, value, __ATOMIC_RELEASE);
}
void
__gcov_ior_profiler_atomic (gcov_type *counters, gcov_type value)
{
__atomic_fetch_or (&counters[0], value, __ATOMIC_RELAXED);
}
int
atomic_fetch_or_RELAXED ()
{
return __atomic_fetch_or (&v, 4096, __ATOMIC_RELAXED);
}
static __int128_t
quad_fetch_or (__int128_t *ptr, __int128_t value)
{
return __atomic_fetch_or (ptr, value, __ATOMIC_ACQUIRE);
}
P_LIB_API psize
p_atomic_pointer_or (volatile void *atomic,
psize val)
{
return (psize) __atomic_fetch_or ((volatile pssize *) atomic, val, __ATOMIC_SEQ_CST);
}
int
atomic_fetch_or_ACQUIRE (int a)
{
return __atomic_fetch_or (&v, a, __ATOMIC_ACQUIRE);
}
long
atomic_fetch_or_RELAXED (long a)
{
return __atomic_fetch_or (&v, a, __ATOMIC_RELAXED);
}