Add tracing for epoll1
diff --git a/src/core/lib/iomgr/ev_epoll1_linux.c b/src/core/lib/iomgr/ev_epoll1_linux.c
index 0f067b5..ea75554 100644
--- a/src/core/lib/iomgr/ev_epoll1_linux.c
+++ b/src/core/lib/iomgr/ev_epoll1_linux.c
@@ -61,6 +61,7 @@
#include "src/core/lib/iomgr/workqueue.h"
#include "src/core/lib/profiling/timers.h"
#include "src/core/lib/support/block_annotate.h"
+#include "src/core/lib/support/string.h"
static grpc_wakeup_fd global_wakeup_fd;
static int g_epfd;
@@ -744,45 +745,74 @@
static grpc_error *pollset_kick(grpc_pollset *pollset,
grpc_pollset_worker *specific_worker) {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) {
+ gpr_strvec log;
+ gpr_strvec_init(&log);
+ char *tmp;
+ gpr_asprintf(&tmp, "PS:%p KICK:%p curps=%p curworker=%p root=%p", pollset, specific_worker, (void*)gpr_tls_get(&g_current_thread_pollset), (void*)gpr_tls_get(&g_current_thread_worker), pollset->root_worker);
+ gpr_strvec_add(&log, tmp);
+ if (pollset->root_worker != NULL) {
+ gpr_asprintf(&tmp, " {kicked=%d next=%p {kicked=%d}}", pollset->root_worker->kick_state, pollset->root_worker->next, pollset->root_worker->next->kick_state);
+ gpr_strvec_add(&log, tmp);
+ }
+ if (specific_worker != NULL) {
+ gpr_asprintf(&tmp, " worker_kicked=%d", specific_worker->kick_state);
+ gpr_strvec_add(&log, tmp);
+ }
+ tmp = gpr_strvec_flatten(&log, NULL);
+ gpr_strvec_destroy(&log);
+ gpr_log(GPR_DEBUG, "%s", tmp);
+ gpr_free(tmp);
+ }
if (specific_worker == NULL) {
if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)pollset) {
grpc_pollset_worker *root_worker = pollset->root_worker;
if (root_worker == NULL) {
pollset->kicked_without_poller = true;
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. kicked_without_poller"); }
return GRPC_ERROR_NONE;
}
grpc_pollset_worker *next_worker = root_worker->next;
if (root_worker == next_worker &&
root_worker == (grpc_pollset_worker *)gpr_atm_no_barrier_load(
&g_active_poller)) {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. kicked %p", root_worker); }
root_worker->kick_state = KICKED;
return grpc_wakeup_fd_wakeup(&global_wakeup_fd);
} else if (next_worker->kick_state == UNKICKED) {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. kicked %p", next_worker); }
GPR_ASSERT(next_worker->initialized_cv);
next_worker->kick_state = KICKED;
gpr_cv_signal(&next_worker->cv);
return GRPC_ERROR_NONE;
} else {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. do nothing??"); }
return GRPC_ERROR_NONE;
}
} else {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. do nothing??"); }
return GRPC_ERROR_NONE;
}
} else if (specific_worker->kick_state == KICKED) {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. specific worker already kicked"); }
return GRPC_ERROR_NONE;
} else if (gpr_tls_get(&g_current_thread_worker) ==
(intptr_t)specific_worker) {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. mark %p kicked", specific_worker); }
specific_worker->kick_state = KICKED;
return GRPC_ERROR_NONE;
} else if (specific_worker ==
(grpc_pollset_worker *)gpr_atm_no_barrier_load(&g_active_poller)) {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. kick active poller"); }
specific_worker->kick_state = KICKED;
return grpc_wakeup_fd_wakeup(&global_wakeup_fd);
} else if (specific_worker->initialized_cv) {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. kick waiting worker"); }
specific_worker->kick_state = KICKED;
gpr_cv_signal(&specific_worker->cv);
return GRPC_ERROR_NONE;
} else {
+ if (GRPC_TRACER_ON(grpc_polling_trace)) { gpr_log(GPR_DEBUG, " .. kick non-waiting worker"); }
specific_worker->kick_state = KICKED;
return GRPC_ERROR_NONE;
}