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-rw-r--r--src/core/iomgr/pollset_kick_posix.c168
1 files changed, 0 insertions, 168 deletions
diff --git a/src/core/iomgr/pollset_kick_posix.c b/src/core/iomgr/pollset_kick_posix.c
deleted file mode 100644
index 51021784f2..0000000000
--- a/src/core/iomgr/pollset_kick_posix.c
+++ /dev/null
@@ -1,168 +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/iomgr/pollset_kick_posix.h"
-
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "src/core/iomgr/socket_utils_posix.h"
-#include "src/core/iomgr/wakeup_fd_posix.h"
-#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
-
-/* This implementation is based on a freelist of wakeup fds, with extra logic to
- * handle kicks while there is no attached fd. */
-
-/* TODO(klempner): Autosize this, and consider providing a way to disable the
- * cap entirely on systems with large fd limits */
-#define GRPC_MAX_CACHED_WFDS 50
-
-static grpc_kick_fd_info *fd_freelist = NULL;
-static int fd_freelist_count = 0;
-static gpr_mu fd_freelist_mu;
-
-static grpc_kick_fd_info *allocate_wfd(void) {
- grpc_kick_fd_info *info = NULL;
- gpr_mu_lock(&fd_freelist_mu);
- if (fd_freelist != NULL) {
- info = fd_freelist;
- fd_freelist = fd_freelist->next;
- --fd_freelist_count;
- }
- gpr_mu_unlock(&fd_freelist_mu);
- if (info == NULL) {
- info = gpr_malloc(sizeof(*info));
- grpc_wakeup_fd_create(&info->wakeup_fd);
- info->next = NULL;
- }
- return info;
-}
-
-static void destroy_wfd(grpc_kick_fd_info *wfd) {
- grpc_wakeup_fd_destroy(&wfd->wakeup_fd);
- gpr_free(wfd);
-}
-
-static void free_wfd(grpc_kick_fd_info *fd_info) {
- gpr_mu_lock(&fd_freelist_mu);
- if (fd_freelist_count < GRPC_MAX_CACHED_WFDS) {
- fd_info->next = fd_freelist;
- fd_freelist = fd_info;
- fd_freelist_count++;
- fd_info = NULL;
- }
- gpr_mu_unlock(&fd_freelist_mu);
-
- if (fd_info) {
- destroy_wfd(fd_info);
- }
-}
-
-void grpc_pollset_kick_init(grpc_pollset_kick_state *kick_state) {
- gpr_mu_init(&kick_state->mu);
- kick_state->kicked = 0;
- kick_state->fd_list.next = kick_state->fd_list.prev = &kick_state->fd_list;
-}
-
-void grpc_pollset_kick_destroy(grpc_pollset_kick_state *kick_state) {
- gpr_mu_destroy(&kick_state->mu);
- GPR_ASSERT(kick_state->fd_list.next == &kick_state->fd_list);
-}
-
-grpc_kick_fd_info *grpc_pollset_kick_pre_poll(
- grpc_pollset_kick_state *kick_state) {
- grpc_kick_fd_info *fd_info;
- gpr_mu_lock(&kick_state->mu);
- if (kick_state->kicked) {
- kick_state->kicked = 0;
- gpr_mu_unlock(&kick_state->mu);
- return NULL;
- }
- fd_info = allocate_wfd();
- fd_info->next = &kick_state->fd_list;
- fd_info->prev = fd_info->next->prev;
- fd_info->next->prev = fd_info->prev->next = fd_info;
- gpr_mu_unlock(&kick_state->mu);
- return fd_info;
-}
-
-void grpc_pollset_kick_consume(grpc_pollset_kick_state *kick_state,
- grpc_kick_fd_info *fd_info) {
- grpc_wakeup_fd_consume_wakeup(&fd_info->wakeup_fd);
-}
-
-void grpc_pollset_kick_post_poll(grpc_pollset_kick_state *kick_state,
- grpc_kick_fd_info *fd_info) {
- gpr_mu_lock(&kick_state->mu);
- fd_info->next->prev = fd_info->prev;
- fd_info->prev->next = fd_info->next;
- free_wfd(fd_info);
- gpr_mu_unlock(&kick_state->mu);
-}
-
-void grpc_pollset_kick_kick(grpc_pollset_kick_state *kick_state) {
- gpr_mu_lock(&kick_state->mu);
- if (kick_state->fd_list.next != &kick_state->fd_list) {
- grpc_wakeup_fd_wakeup(&kick_state->fd_list.next->wakeup_fd);
- } else {
- kick_state->kicked = 1;
- }
- gpr_mu_unlock(&kick_state->mu);
-}
-
-void grpc_pollset_kick_global_init_fallback_fd(void) {
- gpr_mu_init(&fd_freelist_mu);
- grpc_wakeup_fd_global_init_force_fallback();
-}
-
-void grpc_pollset_kick_global_init(void) {
- gpr_mu_init(&fd_freelist_mu);
- grpc_wakeup_fd_global_init();
-}
-
-void grpc_pollset_kick_global_destroy(void) {
- while (fd_freelist != NULL) {
- grpc_kick_fd_info *current = fd_freelist;
- fd_freelist = fd_freelist->next;
- destroy_wfd(current);
- }
- grpc_wakeup_fd_global_destroy();
- gpr_mu_destroy(&fd_freelist_mu);
-}
-
-#endif /* GPR_POSIX_SOCKET */