lagopus_result_t
lagopus_callout_start_main_loop(void) {
lagopus_result_t ret = LAGOPUS_RESULT_ANY_FAILURES;
if (likely(s_is_handler_inited == true)) {
if (s_n_workers > 0) {
ret = s_start_callout_stage();
if (likely(ret == LAGOPUS_RESULT_OK)) {
s_do_loop = true;
mbar();
ret = s_start_callout_main_loop();
}
} else {
s_do_loop = true;
mbar();
ret = s_start_callout_main_loop();
}
} else {
ret = LAGOPUS_RESULT_NOT_OPERATIONAL;
}
return ret;
}
static void
s_once_proc(void) {
gallus_result_t r;
s_gstate = MODULE_GLOBAL_STATE_UNKNOWN;
s_n_modules = 0;
s_n_finalized_modules = 0;
s_is_unloading = false;
s_cur_module_idx = 0;
s_initializer_tid = pthread_self();
(void)__sync_add_and_fetch(&s_is_exit_handler_called, 0);
(void)memset((void *)s_modules, 0, sizeof(s_modules));
mbar();
if ((r = gallus_mutex_create(&s_lck)) != GALLUS_RESULT_OK) {
gallus_perror(r);
gallus_exit_fatal("can't initialize a mutex.\n");
}
if ((r = gallus_cond_create(&s_cnd)) != GALLUS_RESULT_OK) {
gallus_perror(r);
gallus_exit_fatal("can't initialize a cond.\n");
}
if (atexit(s_atexit_handler) != 0) {
gallus_perror(GALLUS_RESULT_POSIX_API_ERROR);
gallus_exit_fatal("can't add an exit handler.\n");
}
}
static inline lagopus_result_t
s_stop_callout_main_loop(void) {
lagopus_result_t ret = LAGOPUS_RESULT_ANY_FAILURES;
if (s_is_stopped == false) {
if (s_do_loop == true) {
/*
* Stop the main loop first.
*/
s_do_loop = false;
mbar();
(void)lagopus_bbq_wakeup(&s_urgent_tsk_q, -1LL);
s_lock_sched();
{
while (s_is_stopped == false) {
s_wait_sched(-1LL);
}
}
s_unlock_sched();
ret = LAGOPUS_RESULT_OK;
} else {
ret = LAGOPUS_RESULT_OK;
}
} else {
ret = LAGOPUS_RESULT_OK;
}
return ret;
}
void UPC_L2_Reset()
{
int i;
int j;
// Switch to using UPC_C Sync Control
uint64_t saveRunState = DCRReadUser(UPC_C_DCR(COUNTER_START));
UPC_C_Stop_Sync_Counting();
// Don't need to wait for counts to flush on L2
// Low granularity counts are cleared each 800 cycles
// and residuals considered low enough to ignore.
// check if combining counts
if (UPC_C_DCR__CONFIG__L2_COMBINE_get(upc_c->c_config)) {
// clear only combined upc_c counts
for (j=0; j < UPC_L2_NUM_COUNTERS; j++) {
upc_c->data16.grp[UPC_C_SRAM_BASE_L2_GROUP].counter[j] = 0;
}
}
else {
// clear all upc_c counts
for (i=0; i < L2_DCR_num; i++) {
for (j=0; j < UPC_L2_NUM_COUNTERS; j++) {
upc_c->data16.grp[UPC_C_SRAM_BASE_L2_GROUP + i].counter[j] = 0;
}
}
}
if (saveRunState) {
UPC_C_Start_Sync_Counting();
}
mbar();
}
//! \brief: UPC_L2_DisableUPC
void UPC_L2_DisableUPC()
{
int i;
for (i=0; i < L2_DCR_num; i++) {
DCRWriteUser(L2_DCR(i, UPC_L2_CONFIG),
L2_DCR__UPC_L2_CONFIG__UPC_L2_RING_ENABLE_set(0) );
DCRWriteUser(L2_DCR(i, UPC_L2_COUNTER_CONTROL_W1C),
L2_DCR__UPC_L2_COUNTER_CONTROL_RW__ENABLE_set(0) );
}
mbar();
}
//flush the cache
inline void cache_flush()
{
#if defined BGQ
#if ! defined BGQ_EMU
mbar();
#else
__sync_synchronize();
#endif
#else
#pragma omp flush
#endif
}
static gallus_result_t
s_ingress_main(const gallus_pipeline_stage_t *sptr,
size_t idx,
void *evbuf,
size_t n_evs) {
gallus_result_t ret = GALLUS_RESULT_ANY_FAILURES;
(void)evbuf;
(void)n_evs;
if (likely(sptr != NULL && *sptr != NULL)) {
test_stage_t ts = (test_stage_t)(*sptr);
base_stage_t bs = (base_stage_t)ts;
if (likely(bs != NULL && bs->m_next_stg != NULL)) {
if (likely(ts->m_states[idx] != test_stage_state_done)) {
gallus_chrono_t start_time;
uint64_t start_clock;
uint64_t end_clock;
uint64_t *addr = ts->m_data + ts->m_enq_infos[idx].m_offset;
size_t len = ts->m_enq_infos[idx].m_length;
WHAT_TIME_IS_IT_NOW_IN_NSEC(start_time);
start_clock = gallus_rdtsc();
ret = gallus_pipeline_stage_submit((gallus_pipeline_stage_t *)
&(bs->m_next_stg),
(void *)addr, len, (void *)idx);
end_clock = gallus_rdtsc();
gallus_atomic_update_min(uint64_t, &(ts->m_start_clock),
0, start_clock);
gallus_atomic_update_max(uint64_t, &(ts->m_end_clock),
0, end_clock);
gallus_atomic_update_min(gallus_chrono_t, &(ts->m_start_time),
-1LL, start_time);
ts->m_states[idx] = test_stage_state_done;
mbar();
} else {
ret = s_test_stage_wait(ts);
}
} else {
ret = GALLUS_RESULT_INVALID_ARGS;
}
} else {
ret = GALLUS_RESULT_INVALID_ARGS;
}
return ret;
}
static void init_global(global_t *g,int id) {
if (id == 0) {
#ifdef TIMELIMIT
/* Starting time */
g->start = timeofday() ;
#endif
/* Global barrier */
barrier_init(&g->gb,AVAIL) ;
/* Align to cache line */
uintptr_t x = (uintptr_t)(g->mem) ;
x += LINE-1 ; x /= LINE ; x *= LINE ;
intmax_t *m = (intmax_t *)x ;
/* Instance contexts */
for (int k = 0 ; k < NEXE ; k++) {
instance_init(&g->ctx[k],k,m) ;
m += NVARS*LINESZ ;
}
mbar() ;
g->go = 1 ;
} else {
while (g->go == 0) ;
mbar() ;
}
}
void UPC_L2_EnableUPC(UpciBool_t indepCtl, UpciBool_t combine)
{
int i;
for (i=0; i < L2_DCR_num; i++) {
DCRWriteUser(L2_DCR(i, UPC_L2_COUNTER_CONTROL_W1S),
L2_DCR__UPC_L2_COUNTER_CONTROL_RW__RESET_set(0xFFFFUL) |
L2_DCR__UPC_L2_COUNTER_CONTROL_RW__ENABLE_set( (indepCtl ? 0 : 0xFFFFUL) ));
DCRWriteUser(L2_DCR(i, UPC_L2_CONFIG),
L2_DCR__UPC_L2_CONFIG__UPC_L2_RING_ENABLE_set(1));
//| L2_DCR__UPC_L2_CONFIG__SYNC_OVERRIDE_set( (indepCtl ? 0xFFFFUL : 0) ) );
// Switch to rely on sync start - rely on other counter types having override set.
}
UPC_C_DCR__CONFIG__L2_COMBINE_insert(upc_c->c_config, (combine==UpciTrue?1:0));
mbar();
}
void UPC_P_Clear_Unit( int unit )
{
#ifdef __HWSTUBS__
memset(dummyUPC_P_Array, 0, 0x5000);
#endif
upc_p_mmio_t *const upc_p = UPC_P_Addr(unit);
// make sure it's quiet first
upc_p->p_config = 0;
// clear counter config
int i;
for (i=0; i<UPC_P_NUM_COUNTERS; i++) {
// counter config should always default to sync-override.
// Otherwise a start signal from UPC_C will start counting regardless of control run bit settings.
upc_p->counter_cfg[i] = UPC_P__COUNTER_CFG__RESET;
}
// Reset Counters and disable run
upc_p->control = UPC_P__CONTROL__RESET_MASK;
mbar();
// Clear any counter inversions or edge detect configurations.
upc_p->cfg_invert = 0;
upc_p->cfg_edge = 0;
// Insure any interrupt status is clear
upc_p->int_status_w1c = UPC_P__INT_STATUS__ALL_STATUS;
// Clear opcode matches
upc_p->opcode_cfg = 0;
// Clear thread combining masks
upc_p->lp1_tc_config0 = 0;
upc_p->lp1_tc_config1 = 0;
upc_p->a2_tc_config = 0;
}
bool
gallus_module_is_unloading(void) {
mbar();
return (s_n_modules > 0) ? s_is_unloading : true;
}
static void
s_atexit_handler(void) {
if (likely(__sync_fetch_and_add(&s_is_exit_handler_called, 1) == 0)) {
gallus_result_t r;
r = s_trylock();
if (likely(r == GALLUS_RESULT_OK)) {
bool is_finished_cleanly = false;
if (s_n_modules > 0) {
recheck:
mbar();
if (s_gstate == MODULE_GLOBAL_STATE_UNKNOWN) {
is_finished_cleanly = true;
} else if (s_gstate == MODULE_GLOBAL_STATE_STARTED) {
(void)global_state_request_shutdown(SHUTDOWN_RIGHT_NOW);
} else if (s_gstate != MODULE_GLOBAL_STATE_FINALIZED) {
r = s_wait(100LL * 1000LL * 1000LL);
if (r == GALLUS_RESULT_OK) {
goto recheck;
} else if (r == GALLUS_RESULT_TIMEDOUT) {
gallus_msg_warning("Module finalization seems not completed.\n");
} else {
gallus_perror(r);
gallus_msg_error("module finalization wait failed.\n");
}
} else {
is_finished_cleanly = true;
}
}
if (is_finished_cleanly == true) {
s_is_unloading = true;
mbar();
}
s_unlock();
} else if (r == GALLUS_RESULT_BUSY) {
/*
* The lock failure. Snoop s_gstate anyway. Note that it's safe
* since the modules are always accessesed only by a single
* thread and the thread is calling exit(3) at this moment.
*/
if (s_gstate == MODULE_GLOBAL_STATE_UNKNOWN) {
/*
* No modules are initialized. Just exit cleanly and let all
* the static destructors run.
*/
s_is_unloading = true;
mbar();
} else {
if (pthread_self() == s_initializer_tid) {
/*
* Made sure that this very thread is the module
* initializer. So we can safely unlock the lock.
*/
switch (s_gstate) {
case MODULE_GLOBAL_STATE_FINALIZING:
case MODULE_GLOBAL_STATE_FINALIZED:
case MODULE_GLOBAL_STATE_UNKNOWN: {
s_unlock();
/*
* Nothing is needed to do.
*/
break;
}
case MODULE_GLOBAL_STATE_INITIALIZING:
case MODULE_GLOBAL_STATE_INITIALIZED:
case MODULE_GLOBAL_STATE_STARTING: {
s_unlock();
/*
* With this only modules safely finalizable so far are
* finalized.
*/
gallus_module_finalize_all();
break;
}
case MODULE_GLOBAL_STATE_STARTED: {
s_unlock();
(void)global_state_request_shutdown(SHUTDOWN_RIGHT_NOW);
break;
}
case MODULE_GLOBAL_STATE_SHUTTINGDOWN:
case MODULE_GLOBAL_STATE_STOPPING:
case MODULE_GLOBAL_STATE_WAITING:
case MODULE_GLOBAL_STATE_SHUTDOWN: {
s_unlock();
/*
* There's nothing we can do at this moment.
*/
break;
}
default: {
s_unlock();
break;
}
}
} else { /* (pthread_self() == s_initializer_tid) */
/*
* This menas that a thread other than module initialized is
* locking the lock. There's nothing we can do at this moment.
*/
return;
}
} /* (s_gstate == MODULE_GLOBAL_STATE_UNKNOWN) */
}
}
}
static inline lagopus_result_t
s_start_callout_main_loop(void) {
lagopus_result_t ret = LAGOPUS_RESULT_ANY_FAILURES;
global_state_t s;
shutdown_grace_level_t l;
ret = global_state_wait_for(GLOBAL_STATE_STARTED, &s, &l, -1LL);
if (likely(ret == LAGOPUS_RESULT_OK)) {
if (likely(s == GLOBAL_STATE_STARTED)) {
#ifdef CO_MSG_DEBUG
lagopus_chrono_t timeout = s_idle_interval;
#else
lagopus_chrono_t timeout;
#endif /* CO_MSG_DEBUG */
lagopus_callout_task_t out_tasks[CALLOUT_TASK_MAX * 3];
size_t n_out_tasks;
lagopus_callout_task_t urgent_tasks[CALLOUT_TASK_MAX];
lagopus_result_t sn_urgent_tasks;
lagopus_callout_task_t idle_tasks[CALLOUT_TASK_MAX];
lagopus_result_t sn_idle_tasks;
lagopus_callout_task_t timed_tasks[CALLOUT_TASK_MAX];
lagopus_result_t sn_timed_tasks;
lagopus_result_t r;
lagopus_chrono_t now;
lagopus_chrono_t next_wakeup;
lagopus_chrono_t prev_wakeup;
int cstate = 0;
WHAT_TIME_IS_IT_NOW_IN_NSEC(prev_wakeup);
(void)lagopus_mutex_enter_critical(&s_sched_lck, &cstate);
{
s_is_stopped = false;
mbar();
while (s_do_loop == true) {
n_out_tasks = 0;
/*
* Get the current time.
*/
WHAT_TIME_IS_IT_NOW_IN_NSEC(now);
#ifdef CO_MSG_DEBUG
lagopus_msg_debug(3, "now: " PF64(d) "\n", now);
lagopus_msg_debug(3, "prv: " PF64(d) "\n", prev_wakeup);
lagopus_msg_debug(3, "to: " PF64(d) "\n", timeout);
#endif /* CO_MSG_DEBUG */
s_lock_global();
{
/*
* Acquire the global lock to make the task
* submisson/fetch atomic.
*/
sn_urgent_tasks =
lagopus_bbq_get_n(&s_urgent_tsk_q, (void **)urgent_tasks,
CALLOUT_TASK_MAX, 1LL,
lagopus_callout_task_t,
0LL, NULL);
sn_idle_tasks =
lagopus_bbq_get_n(&s_idle_tsk_q, (void **)idle_tasks,
CALLOUT_TASK_MAX, 1LL,
lagopus_callout_task_t,
0LL, NULL);
}
s_unlock_global();
/*
* Pack the tasks into a buffer.
*/
sn_timed_tasks = s_get_runnable_timed_task(now, timed_tasks,
CALLOUT_TASK_MAX,
&next_wakeup);
if (sn_timed_tasks > 0) {
/*
* Pack the timed tasks.
*/
(void)memcpy((void *)(out_tasks + n_out_tasks),
timed_tasks,
(size_t)(sn_timed_tasks) *
sizeof(lagopus_callout_task_t));
n_out_tasks += (size_t)sn_timed_tasks;
#ifdef CO_MSG_DEBUG
lagopus_msg_debug(3, "timed task " PF64(u) ".\n",
sn_timed_tasks);
lagopus_msg_debug(3, "nw: " PF64(d) ".\n",
next_wakeup);
#endif /* CO_MSG_DEBUG */
} else if (sn_timed_tasks < 0) {
/*
* We can't be treat this as a fatal error. Carry on.
*/
lagopus_perror(sn_timed_tasks);
lagopus_msg_error("timed tasks fetch failed.\n");
}
if (sn_urgent_tasks > 0) {
/*
* Pack the urgent tasks.
*/
(void)memcpy((void *)(out_tasks + n_out_tasks),
urgent_tasks,
(size_t)(sn_urgent_tasks) *
sizeof(lagopus_callout_task_t));
n_out_tasks += (size_t)sn_urgent_tasks;
} else if (sn_urgent_tasks < 0) {
/*
* We can't be treat this as a fatal error. Carry on.
*/
lagopus_perror(sn_urgent_tasks);
lagopus_msg_error("urgent tasks fetch failed.\n");
}
if (sn_idle_tasks > 0) {
/*
* Pack the idle tasks.
*/
(void)memcpy((void *)(out_tasks + n_out_tasks),
idle_tasks,
(size_t)(sn_idle_tasks) *
sizeof(lagopus_callout_task_t));
n_out_tasks += (size_t)sn_idle_tasks;
} else if (sn_idle_tasks < 0) {
/*
* We can't be treat this as a fatal error. Carry on.
*/
lagopus_perror(sn_idle_tasks);
lagopus_msg_error("idle tasks fetch failed.\n");
}
if (n_out_tasks > 0) {
/*
* Run/Submit the tasks.
*/
r = (s_final_task_sched_proc)(out_tasks, now, n_out_tasks);
if (unlikely(r <= 0)) {
/*
* We can't be treat this as a fatal error. Carry on.
*/
lagopus_perror(r);
lagopus_msg_error("failed to submit " PFSZ(u)
" urgent/timed tasks.\n", n_out_tasks);
}
}
if (s_idle_proc != NULL &&
s_next_idle_abstime < (now + CALLOUT_TASK_SCHED_JITTER)) {
if (likely(s_idle_proc(s_idle_proc_arg) ==
LAGOPUS_RESULT_OK)) {
s_next_idle_abstime = now + s_idle_interval;
} else {
/*
* Stop the main loop and return (clean finish.)
*/
s_do_loop = false;
goto critical_end;
}
}
/*
* fetch the start time of the timed task in the queue head.
*/
next_wakeup = s_peek_current_wakeup_time();
if (next_wakeup <= 0LL) {
/*
* Nothing in the timed Q.
*/
if (s_next_idle_abstime <= 0LL) {
s_next_idle_abstime = now + s_idle_interval;
}
next_wakeup = s_next_idle_abstime;
}
/*
* TODO
*
* Re-optimize forcible waje up by timed task submission
* timing and times. See also
* callout_queue.c:s_do_sched().
*/
/*
* calculate the timeout and sleep.
*/
timeout = next_wakeup - now;
if (likely(timeout > 0LL)) {
if (timeout > s_idle_interval) {
timeout = s_idle_interval;
next_wakeup = now + timeout;
}
#ifdef CO_MSG_DEBUG
lagopus_msg_debug(4,
"about to sleep, timeout " PF64(d) " nsec.\n",
timeout);
#endif /* CO_MSG_DEBUG */
prev_wakeup = next_wakeup;
r = lagopus_bbq_wait_gettable(&s_urgent_tsk_q, timeout);
if (unlikely(r <= 0 &&
r != LAGOPUS_RESULT_TIMEDOUT &&
r != LAGOPUS_RESULT_WAKEUP_REQUESTED)) {
lagopus_perror(r);
lagopus_msg_error("Event wait failure.\n");
ret = r;
goto critical_end;
} else {
if (r == LAGOPUS_RESULT_WAKEUP_REQUESTED) {
#ifdef CO_MSG_DEBUG
lagopus_msg_debug(4, "woke up.\n");
#endif /* CO_MSG_DEBUG */
}
}
} else {
WHAT_TIME_IS_IT_NOW_IN_NSEC(next_wakeup);
prev_wakeup = next_wakeup;
#ifdef CO_MSG_DEBUG
lagopus_msg_debug(4, "timeout zero. contiune.\n");
#endif /* CO_MSG_DEBUG */
}
/*
* The end of the desired potion of the loop.
*/
} /* while (s_do_loop == true) */
}
critical_end:
s_is_stopped = true;
s_wakeup_sched();
(void)lagopus_mutex_leave_critical(&s_sched_lck, cstate);
if (s_do_loop == false) {
/*
* The clean finish.
*/
ret = LAGOPUS_RESULT_OK;
}
} else { /* s == GLOBAL_STATE_STARTED */
s_is_stopped = true;
ret = LAGOPUS_RESULT_INVALID_STATE_TRANSITION;
}
} else {
s_is_stopped = true;
}
return ret;
}
lagopus_result_t
lagopus_cbuffer_wakeup(lagopus_cbuffer_t *cbptr, lagopus_chrono_t nsec) {
lagopus_result_t ret = LAGOPUS_RESULT_ANY_FAILURES;
if (cbptr != NULL &&
*cbptr != NULL) {
size_t n_waiters;
s_lock(*cbptr);
{
n_waiters = __sync_fetch_and_add(&((*cbptr)->m_n_waiters), 0);
if (n_waiters > 0) {
if ((*cbptr)->m_is_operational == true) {
if ((*cbptr)->m_is_awakened == false) {
/*
* Wake all the waiters up.
*/
(*cbptr)->m_is_awakened = true;
(void)lagopus_cond_notify(&((*cbptr)->m_cond_get), true);
(void)lagopus_cond_notify(&((*cbptr)->m_cond_put), true);
if (nsec != 0LL) {
/*
* Then wait for one of the waiters wakes this thread up.
*/
recheck:
mbar();
if ((*cbptr)->m_is_operational == true) {
if ((*cbptr)->m_is_awakened == true) {
lagopus_msg_debug(5, "sync wait a waiter wake me up...\n");
if ((ret = lagopus_cond_wait(&((*cbptr)->m_cond_awakened),
&((*cbptr)->m_lock), nsec)) ==
LAGOPUS_RESULT_OK) {
goto recheck;
}
lagopus_msg_debug(5, "a waiter woke me up.\n");
} else {
ret = LAGOPUS_RESULT_OK;
}
} else {
ret = LAGOPUS_RESULT_NOT_OPERATIONAL;
}
} else {
ret = LAGOPUS_RESULT_OK;
}
} else {
ret = LAGOPUS_RESULT_OK;
}
} else {
ret = LAGOPUS_RESULT_NOT_OPERATIONAL;
}
} else {
ret = LAGOPUS_RESULT_OK;
}
}
s_unlock(*cbptr);
} else {
ret = LAGOPUS_RESULT_INVALID_ARGS;
}
return ret;
}
static inline lagopus_result_t
s_get_n(lagopus_cbuffer_t *cbptr,
void *valptr,
size_t n_vals_max,
size_t n_at_least,
size_t valsz,
lagopus_chrono_t nsec,
size_t *n_actual_get,
bool do_incr) {
lagopus_result_t ret = LAGOPUS_RESULT_ANY_FAILURES;
lagopus_cbuffer_t cb = NULL;
if (cbptr != NULL && (cb = *cbptr) != NULL &&
valptr != NULL &&
valsz == cb->m_element_size) {
if (n_vals_max > 0) {
int64_t n_copyout = 0LL;
if (nsec == 0LL) {
s_lock(cb);
{
/*
* Just get and return.
*/
if (cb->m_is_operational == true) {
n_copyout = ret = s_copyout(cb, valptr, n_vals_max, do_incr);
} else {
ret = LAGOPUS_RESULT_NOT_OPERATIONAL;
}
}
s_unlock(cb);
} else if (nsec < 0LL) {
s_lock(cb);
{
/*
* Repeat getting until all the required # of the data are got.
*/
check_inf:
mbar();
if (cb->m_is_operational == true) {
n_copyout += s_copyout(cb,
(void *)((char *)valptr +
((size_t)n_copyout * valsz)),
n_vals_max - (size_t)n_copyout,
do_incr);
if ((size_t)n_copyout < n_vals_max) {
/*
* Need to repeat.
*/
if (cb->m_n_elements < 1LL) {
/*
* No data. Need to wait for someone put data to the
* buffer.
*/
if ((ret = s_wait_gettable(cb, -1LL)) ==
LAGOPUS_RESULT_OK) {
goto check_inf;
} else {
/*
* Any errors occur while waiting.
*/
if (ret == LAGOPUS_RESULT_TIMEDOUT) {
/*
* Must not happen.
*/
lagopus_msg_fatal("Timed out must not happen here.\n");
}
}
} else {
/*
* The buffer still has data but it couldn't get all
* the data?? Must not happen??
*/
lagopus_msg_fatal("Couldn't get all the data even the data "
"available. Must not happen.\n");
}
} else {
/*
* Succeeded.
*/
ret = n_copyout;
}
} else {
ret = LAGOPUS_RESULT_NOT_OPERATIONAL;
}
}
s_unlock(cb);
} else {
s_lock(cb);
{
/*
* Repeat getting until all the required # of the data are
* got or the spcified time limit is expired.
*/
lagopus_chrono_t copy_start;
lagopus_chrono_t wait_end;
lagopus_chrono_t to = nsec;
check_to:
mbar();
if (cb->m_is_operational == true) {
WHAT_TIME_IS_IT_NOW_IN_NSEC(copy_start);
n_copyout += s_copyout(cb,
(void *)((char *)valptr +
((size_t)n_copyout * valsz)),
n_vals_max - (size_t)n_copyout,
do_incr);
if ((size_t)n_copyout < n_at_least) {
/*
* Need to repeat.
*/
if (cb->m_n_elements < 1LL) {
/*
* No data. Need to wait for someone put data to the
* buffer.
*/
if ((ret = s_wait_gettable(cb, to)) ==
LAGOPUS_RESULT_OK) {
WHAT_TIME_IS_IT_NOW_IN_NSEC(wait_end);
to -= (wait_end - copy_start);
if (to > 0LL) {
goto check_to;
}
ret = LAGOPUS_RESULT_TIMEDOUT;
}
} else {
/*
* The buffer still has data but it couldn't get all
* the data?? Must not happen??
*/
lagopus_msg_fatal("Couldn't get all the data even the data "
"available. Must not happen.\n");
}
} else {
/*
* Succeeded.
*/
ret = n_copyout;
}
} else {
ret = LAGOPUS_RESULT_NOT_OPERATIONAL;
}
}
s_unlock(cb);
}
if (n_actual_get != NULL) {
*n_actual_get = (size_t)n_copyout;
}
} else {
if (n_actual_get != NULL) {
*n_actual_get = 0LL;
}
ret = LAGOPUS_RESULT_OK;
}
} else {
if (n_actual_get != NULL) {
*n_actual_get = 0LL;
}
ret = LAGOPUS_RESULT_INVALID_ARGS;
}
return ret;
}
static gallus_result_t
s_intermediate_main(const gallus_pipeline_stage_t *sptr,
size_t idx,
void *evbuf,
size_t n_evs) {
gallus_result_t ret = GALLUS_RESULT_ANY_FAILURES;
if (likely(sptr != NULL && *sptr != NULL)) {
test_stage_t ts = (test_stage_t)(*sptr);
size_t n_cur_evs = __sync_add_and_fetch(&(ts->m_n_events), 0);
if (likely(n_cur_evs < ts->m_n_data)) {
uint64_t *data = (uint64_t *)evbuf;
size_t i;
size_t j;
uint64_t sum = 0;
if (unlikely(ts->m_states[idx] == test_stage_state_initialized)) {
uint64_t cur_clock = gallus_rdtsc();
gallus_atomic_update_min(uint64_t, &(ts->m_start_clock),
0, cur_clock);
ts->m_states[idx] = test_stage_state_running;
}
for (i = 0; i < ts->m_weight; i++) {
sum = 0;
for (j = 0; j < n_evs; j++) {
sum += data[j];
}
}
(void)__sync_add_and_fetch(&(ts->m_sum), sum);
n_cur_evs = __sync_add_and_fetch(&(ts->m_n_events), n_evs);
if (unlikely(ts->m_n_data == n_cur_evs)) {
uint64_t cur_clock = gallus_rdtsc();
gallus_chrono_t end_time;
WHAT_TIME_IS_IT_NOW_IN_NSEC(end_time);
gallus_msg_debug(1, "got " PFSZ(u) " / " PFSZ(u)" events.\n",
n_cur_evs, ts->m_n_data);
gallus_atomic_update_min(uint64_t, &(ts->m_end_clock),
0, cur_clock);
gallus_atomic_update_max(gallus_chrono_t, &(ts->m_end_time),
-1, end_time);
ts->m_states[idx] = test_stage_state_done;
mbar();
if (ts->m_type == test_stage_type_egress) {
/*
* Wake the master up.
*/
(void)s_test_stage_wakeup(ts);
}
}
ret = (gallus_result_t)n_evs;
} else {
ret = s_test_stage_wait(ts);
}
} else {
ret = GALLUS_RESULT_INVALID_ARGS;
}
return ret;
}