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Diffstat (limited to 'src/core/lib/iomgr/pollset_multipoller_with_poll_posix.c')
-rw-r--r--src/core/lib/iomgr/pollset_multipoller_with_poll_posix.c234
1 files changed, 0 insertions, 234 deletions
diff --git a/src/core/lib/iomgr/pollset_multipoller_with_poll_posix.c b/src/core/lib/iomgr/pollset_multipoller_with_poll_posix.c
deleted file mode 100644
index 7668bf63f5..0000000000
--- a/src/core/lib/iomgr/pollset_multipoller_with_poll_posix.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <grpc/support/port_platform.h>
-
-#ifdef GPR_POSIX_SOCKET
-
-#include "src/core/lib/iomgr/pollset_posix.h"
-
-#include <errno.h>
-#include <poll.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-#include <grpc/support/useful.h>
-
-#include "src/core/lib/iomgr/fd_posix.h"
-#include "src/core/lib/iomgr/iomgr_internal.h"
-#include "src/core/lib/iomgr/pollset_posix.h"
-#include "src/core/lib/support/block_annotate.h"
-
-typedef struct {
- /* all polled fds */
- size_t fd_count;
- size_t fd_capacity;
- grpc_fd **fds;
- /* fds that have been removed from the pollset explicitly */
- size_t del_count;
- size_t del_capacity;
- grpc_fd **dels;
-} pollset_hdr;
-
-static void multipoll_with_poll_pollset_add_fd(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset,
- grpc_fd *fd,
- int and_unlock_pollset) {
- size_t i;
- pollset_hdr *h = pollset->data.ptr;
- /* TODO(ctiller): this is O(num_fds^2); maybe switch to a hash set here */
- for (i = 0; i < h->fd_count; i++) {
- if (h->fds[i] == fd) goto exit;
- }
- if (h->fd_count == h->fd_capacity) {
- h->fd_capacity = GPR_MAX(h->fd_capacity + 8, h->fd_count * 3 / 2);
- h->fds = gpr_realloc(h->fds, sizeof(grpc_fd *) * h->fd_capacity);
- }
- h->fds[h->fd_count++] = fd;
- GRPC_FD_REF(fd, "multipoller");
-exit:
- if (and_unlock_pollset) {
- gpr_mu_unlock(&pollset->mu);
- }
-}
-
-static void multipoll_with_poll_pollset_maybe_work_and_unlock(
- grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_pollset_worker *worker,
- gpr_timespec deadline, gpr_timespec now) {
-#define POLLOUT_CHECK (POLLOUT | POLLHUP | POLLERR)
-#define POLLIN_CHECK (POLLIN | POLLHUP | POLLERR)
-
- int timeout;
- int r;
- size_t i, j, fd_count;
- nfds_t pfd_count;
- pollset_hdr *h;
- /* TODO(ctiller): inline some elements to avoid an allocation */
- grpc_fd_watcher *watchers;
- struct pollfd *pfds;
-
- h = pollset->data.ptr;
- timeout = grpc_poll_deadline_to_millis_timeout(deadline, now);
- /* TODO(ctiller): perform just one malloc here if we exceed the inline case */
- pfds = gpr_malloc(sizeof(*pfds) * (h->fd_count + 2));
- watchers = gpr_malloc(sizeof(*watchers) * (h->fd_count + 2));
- fd_count = 0;
- pfd_count = 2;
- pfds[0].fd = GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd);
- pfds[0].events = POLLIN;
- pfds[0].revents = 0;
- pfds[1].fd = GRPC_WAKEUP_FD_GET_READ_FD(&worker->wakeup_fd->fd);
- pfds[1].events = POLLIN;
- pfds[1].revents = 0;
- for (i = 0; i < h->fd_count; i++) {
- int remove = grpc_fd_is_orphaned(h->fds[i]);
- for (j = 0; !remove && j < h->del_count; j++) {
- if (h->fds[i] == h->dels[j]) remove = 1;
- }
- if (remove) {
- GRPC_FD_UNREF(h->fds[i], "multipoller");
- } else {
- h->fds[fd_count++] = h->fds[i];
- watchers[pfd_count].fd = h->fds[i];
- GRPC_FD_REF(watchers[pfd_count].fd, "multipoller_start");
- pfds[pfd_count].fd = h->fds[i]->fd;
- pfds[pfd_count].revents = 0;
- pfd_count++;
- }
- }
- for (j = 0; j < h->del_count; j++) {
- GRPC_FD_UNREF(h->dels[j], "multipoller_del");
- }
- h->del_count = 0;
- h->fd_count = fd_count;
- gpr_mu_unlock(&pollset->mu);
-
- for (i = 2; i < pfd_count; i++) {
- grpc_fd *fd = watchers[i].fd;
- pfds[i].events = (short)grpc_fd_begin_poll(fd, pollset, worker, POLLIN,
- POLLOUT, &watchers[i]);
- GRPC_FD_UNREF(fd, "multipoller_start");
- }
-
- /* TODO(vpai): Consider first doing a 0 timeout poll here to avoid
- even going into the blocking annotation if possible */
- GRPC_SCHEDULING_START_BLOCKING_REGION;
- r = grpc_poll_function(pfds, pfd_count, timeout);
- GRPC_SCHEDULING_END_BLOCKING_REGION;
-
- if (r < 0) {
- if (errno != EINTR) {
- gpr_log(GPR_ERROR, "poll() failed: %s", strerror(errno));
- }
- for (i = 2; i < pfd_count; i++) {
- grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
- }
- } else if (r == 0) {
- for (i = 2; i < pfd_count; i++) {
- grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
- }
- } else {
- if (pfds[0].revents & POLLIN_CHECK) {
- grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd);
- }
- if (pfds[1].revents & POLLIN_CHECK) {
- grpc_wakeup_fd_consume_wakeup(&worker->wakeup_fd->fd);
- }
- for (i = 2; i < pfd_count; i++) {
- if (watchers[i].fd == NULL) {
- grpc_fd_end_poll(exec_ctx, &watchers[i], 0, 0);
- continue;
- }
- grpc_fd_end_poll(exec_ctx, &watchers[i], pfds[i].revents & POLLIN_CHECK,
- pfds[i].revents & POLLOUT_CHECK);
- }
- }
-
- gpr_free(pfds);
- gpr_free(watchers);
-}
-
-static void multipoll_with_poll_pollset_finish_shutdown(grpc_pollset *pollset) {
- size_t i;
- pollset_hdr *h = pollset->data.ptr;
- for (i = 0; i < h->fd_count; i++) {
- GRPC_FD_UNREF(h->fds[i], "multipoller");
- }
- for (i = 0; i < h->del_count; i++) {
- GRPC_FD_UNREF(h->dels[i], "multipoller_del");
- }
- h->fd_count = 0;
- h->del_count = 0;
-}
-
-static void multipoll_with_poll_pollset_destroy(grpc_pollset *pollset) {
- pollset_hdr *h = pollset->data.ptr;
- multipoll_with_poll_pollset_finish_shutdown(pollset);
- gpr_free(h->fds);
- gpr_free(h->dels);
- gpr_free(h);
-}
-
-static const grpc_pollset_vtable multipoll_with_poll_pollset = {
- multipoll_with_poll_pollset_add_fd,
- multipoll_with_poll_pollset_maybe_work_and_unlock,
- multipoll_with_poll_pollset_finish_shutdown,
- multipoll_with_poll_pollset_destroy};
-
-void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx,
- grpc_pollset *pollset, grpc_fd **fds,
- size_t nfds) {
- size_t i;
- pollset_hdr *h = gpr_malloc(sizeof(pollset_hdr));
- pollset->vtable = &multipoll_with_poll_pollset;
- pollset->data.ptr = h;
- h->fd_count = nfds;
- h->fd_capacity = nfds;
- h->fds = gpr_malloc(nfds * sizeof(grpc_fd *));
- h->del_count = 0;
- h->del_capacity = 0;
- h->dels = NULL;
- for (i = 0; i < nfds; i++) {
- h->fds[i] = fds[i];
- GRPC_FD_REF(fds[i], "multipoller");
- }
-}
-
-#endif /* GPR_POSIX_SOCKET */
-
-#ifdef GPR_POSIX_MULTIPOLL_WITH_POLL
-grpc_platform_become_multipoller_type grpc_platform_become_multipoller =
- grpc_poll_become_multipoller;
-#endif
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