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pull/12789/head
Craig Tiller 7 years ago
parent 3d073c261e
commit 29a9c3af38
1 changed files with 79 additions and 67 deletions
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  1. 42
      src/core/lib/iomgr/ev_epollex_linux.c

42
src/core/lib/iomgr/ev_epollex_linux.c
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@ -49,7 +49,8 @@
#include "src/core/lib/support/block_annotate.h"
#include "src/core/lib/support/spinlock.h"
// debug aid: create workers on the heap (allows asan to spot use-after-destruction)
// debug aid: create workers on the heap (allows asan to spot
// use-after-destruction)
#define GRPC_EPOLLEX_CREATE_WORKERS_ON_HEAP 1
#ifndef NDEBUG
@ -461,7 +462,8 @@ static pollable *pollable_ref(pollable *p) {
static pollable *pollable_ref(pollable *p, int line, const char *reason) {
if (GRPC_TRACER_ON(grpc_trace_pollable_refcount)) {
int r = (int)gpr_atm_no_barrier_load(&p->refs.count);
gpr_log(__FILE__, line, GPR_LOG_SEVERITY_DEBUG, "POLLABLE:%p ref %d->%d %s", p, r, r+1, reason);
gpr_log(__FILE__, line, GPR_LOG_SEVERITY_DEBUG,
"POLLABLE:%p ref %d->%d %s", p, r, r + 1, reason);
}
#endif
gpr_ref(&p->refs);
@ -475,7 +477,8 @@ static void pollable_unref(pollable *p, int line, const char *reason) {
if (p == NULL) return;
if (GRPC_TRACER_ON(grpc_trace_pollable_refcount)) {
int r = (int)gpr_atm_no_barrier_load(&p->refs.count);
gpr_log(__FILE__, line, GPR_LOG_SEVERITY_DEBUG, "POLLABLE:%p unref %d->%d %s", p, r, r-1, reason);
gpr_log(__FILE__, line, GPR_LOG_SEVERITY_DEBUG,
"POLLABLE:%p unref %d->%d %s", p, r, r - 1, reason);
}
#endif
if (p != NULL && gpr_unref(&p->refs)) {
@ -581,8 +584,10 @@ static grpc_error *pollset_kick_inner(grpc_exec_ctx *exec_ctx,
if (GRPC_TRACER_ON(grpc_polling_trace)) {
gpr_log(GPR_DEBUG,
"PS:%p kick %p tls_pollset=%p tls_worker=%p pollset.root_worker=%p",
pollset, specific_worker, (void *)gpr_tls_get(&g_current_thread_pollset),
(void *)gpr_tls_get(&g_current_thread_worker), pollset->root_worker);
pollset, specific_worker,
(void *)gpr_tls_get(&g_current_thread_pollset),
(void *)gpr_tls_get(&g_current_thread_worker),
pollset->root_worker);
}
if (specific_worker == NULL) {
if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)pollset) {
@ -850,7 +855,8 @@ static bool begin_worker(grpc_pollset *pollset, grpc_pollset_worker *worker,
worker->initialized_cv = false;
worker->kicked = false;
worker->pollset = pollset;
worker->pollable_obj = POLLABLE_REF(pollset->active_pollable, "pollset_worker");
worker->pollable_obj =
POLLABLE_REF(pollset->active_pollable, "pollset_worker");
worker_insert(&pollset->root_worker, worker, PWLINK_POLLSET);
gpr_mu_lock(&worker->pollable_obj->mu);
if (!worker_insert(&worker->pollable_obj->root_worker, worker,
@ -930,7 +936,8 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
gpr_log(GPR_DEBUG, "PS:%p work hdl=%p worker=%p now=%" PRId64
".%09d deadline=%" PRId64 ".%09d kwp=%d pollable=%p",
pollset, worker_hdl, WORKER_PTR, now.tv_sec, now.tv_nsec,
deadline.tv_sec, deadline.tv_nsec, pollset->kicked_without_poller, pollset->active_pollable);
deadline.tv_sec, deadline.tv_nsec, pollset->kicked_without_poller,
pollset->active_pollable);
}
static const char *err_desc = "pollset_work";
grpc_error *error = GRPC_ERROR_NONE;
@ -943,7 +950,8 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset,
GPR_ASSERT(!pollset->shutdown_closure);
gpr_mu_unlock(&pollset->mu);
if (pollset->event_cursor == pollset->event_count) {
append_error(&error, pollset_epoll(exec_ctx, pollset, WORKER_PTR->pollable_obj,
append_error(&error,
pollset_epoll(exec_ctx, pollset, WORKER_PTR->pollable_obj,
now, deadline),
err_desc);
}
@ -967,7 +975,8 @@ static grpc_error *pollset_transition_pollable_from_empty_to_fd_locked(
static const char *err_desc = "pollset_transition_pollable_from_empty_to_fd";
grpc_error *error = GRPC_ERROR_NONE;
if (GRPC_TRACER_ON(grpc_polling_trace)) {
gpr_log(GPR_DEBUG, "PS:%p add fd %p (%d); transition pollable from empty to fd",
gpr_log(GPR_DEBUG,
"PS:%p add fd %p (%d); transition pollable from empty to fd",
pollset, fd, fd->fd);
}
append_error(&error, pollset_kick_all(exec_ctx, pollset), err_desc);
@ -982,9 +991,11 @@ static grpc_error *pollset_transition_pollable_from_fd_to_multi_locked(
static const char *err_desc = "pollset_transition_pollable_from_fd_to_multi";
grpc_error *error = GRPC_ERROR_NONE;
if (GRPC_TRACER_ON(grpc_polling_trace)) {
gpr_log(GPR_DEBUG,
gpr_log(
GPR_DEBUG,
"PS:%p add fd %p (%d); transition pollable from fd %p to multipoller",
pollset, and_add_fd, and_add_fd?and_add_fd->fd:-1, pollset->active_pollable->owner_fd);
pollset, and_add_fd, and_add_fd ? and_add_fd->fd : -1,
pollset->active_pollable->owner_fd);
}
append_error(&error, pollset_kick_all(exec_ctx, pollset), err_desc);
grpc_fd *initial_fd = pollset->active_pollable->owner_fd;
@ -1007,7 +1018,8 @@ static grpc_error *pollset_transition_pollable_from_fd_to_multi_locked(
static grpc_error *pollset_add_fd_locked(grpc_exec_ctx *exec_ctx,
grpc_pollset *pollset, grpc_fd *fd) {
grpc_error *error = GRPC_ERROR_NONE;
pollable *po_at_start = POLLABLE_REF(pollset->active_pollable, "pollset_add_fd");
pollable *po_at_start =
POLLABLE_REF(pollset->active_pollable, "pollset_add_fd");
switch (pollset->active_pollable->type) {
case PO_EMPTY:
/* empty pollable --> single fd pollable */
@ -1037,7 +1049,8 @@ static grpc_error *pollset_as_multipollable(grpc_exec_ctx *exec_ctx,
pollable **pollable_obj) {
grpc_error *error = GRPC_ERROR_NONE;
gpr_mu_lock(&pollset->mu);
pollable *po_at_start = POLLABLE_REF(pollset->active_pollable, "pollset_as_multipollable");
pollable *po_at_start =
POLLABLE_REF(pollset->active_pollable, "pollset_as_multipollable");
switch (pollset->active_pollable->type) {
case PO_EMPTY:
POLLABLE_UNREF(pollset->active_pollable, "pollset");
@ -1091,8 +1104,7 @@ static grpc_pollset_set *pollset_set_create(void) {
return pss;
}
static void pollset_set_unref(grpc_exec_ctx *exec_ctx,
grpc_pollset_set *pss) {
static void pollset_set_unref(grpc_exec_ctx *exec_ctx, grpc_pollset_set *pss) {
if (pss == NULL) return;
if (!gpr_unref(&pss->refs)) return;
pollset_set_unref(exec_ctx, pss->parent);

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