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Experimental feature: yield implementation for PAPI-based selector trace #19

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Experimental feature: yield implementation for PAPI-based selector trace #19

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23 changes: 20 additions & 3 deletions modules/bale_actor/inc/selector.h
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Original file line number Diff line number Diff line change
Expand Up @@ -196,6 +196,7 @@ class PapiTracer {
}

void start() {
assert(curr_idx == -1);
bool to_add = reuse_idcs.empty();
if (to_add) {
counters.push_back(PapiCounter());
Expand All @@ -215,14 +216,19 @@ class PapiTracer {

int pause() {
HCLIB_PAPI_Stop(curr->papi_counters);
assert(curr_idx >= 0);
#ifdef PAPI_TRACER_DEBUG2
printf("PapiTracer: PE%d pause %d\n", shmem_my_pe(), curr_idx);
#endif
return curr_idx;
int paused = curr_idx;
curr_idx = -1;
curr = NULL;
return paused;
}

void resume(int idx) {
curr_idx = idx;
void resume(int paused) {
assert(curr_idx == -1);
curr_idx = paused;
curr = &(counters[curr_idx]);
(curr->num_sends)++;
#ifdef PAPI_TRACER_DEBUG2
Expand All @@ -233,6 +239,7 @@ class PapiTracer {

void end_and_dump(int64_t src, size_t pkg_size, int mb_id) {
HCLIB_PAPI_Stop(curr->papi_counters);
assert(curr_idx >= 0);
HCLIB_PAPI_Show(src, pkg_size, mb_id, curr->papi_counters, curr->num_sends);
#ifdef PAPI_TRACER_DEBUG2
printf("PapiTracer: PE%d end %d\n", shmem_my_pe(), curr_idx);
Expand Down Expand Up @@ -693,6 +700,16 @@ class Selector {
#endif
}

void yield() {
#ifdef ENABLE_TRACE
int idx = papi_tracer.pause();
hclib::yield();
papi_tracer.resume(idx);
#else
hclib::yield();
#endif
}

bool send(T pkt, int rank) {
assert(N==1);
return send(0, pkt, rank);
Expand Down