diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/core/lib/iomgr/network_status_tracker.c | 121 | ||||
| -rw-r--r-- | src/core/lib/iomgr/network_status_tracker.h | 41 | ||||
| -rw-r--r-- | src/core/lib/iomgr/tcp_posix.c | 4 | ||||
| -rw-r--r-- | src/core/lib/iomgr/tcp_windows.c | 5 | ||||
| -rw-r--r-- | src/python/grpcio/grpc_core_dependencies.py | 1 |
5 files changed, 172 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/network_status_tracker.c b/src/core/lib/iomgr/network_status_tracker.c new file mode 100644 index 0000000000..38a1c9b7d4 --- /dev/null +++ b/src/core/lib/iomgr/network_status_tracker.c @@ -0,0 +1,121 @@ +/* + * + * 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/alloc.h> +#include <grpc/support/log.h> +#include "src/core/lib/iomgr/endpoint.h" + +typedef struct endpoint_ll_node { + grpc_endpoint *ep; + struct endpoint_ll_node *next; +} endpoint_ll_node; + +static endpoint_ll_node *head = NULL; +static gpr_mu g_endpoint_mutex; +static bool g_init_done = false; + +void grpc_initialize_network_status_monitor() { + g_init_done = true; + gpr_mu_init(&g_endpoint_mutex); + // TODO(makarandd): Install callback with OS to monitor network status. +} + +void grpc_destroy_network_status_monitor() { + for (endpoint_ll_node *curr = head; curr != NULL;) { + endpoint_ll_node *next = curr->next; + gpr_free(curr); + curr = next; + } + gpr_mu_destroy(&g_endpoint_mutex); +} + +void grpc_network_status_register_endpoint(grpc_endpoint *ep) { + if (!g_init_done) { + grpc_initialize_network_status_monitor(); + } + gpr_mu_lock(&g_endpoint_mutex); + if (head == NULL) { + head = (endpoint_ll_node *)gpr_malloc(sizeof(endpoint_ll_node)); + head->ep = ep; + head->next = NULL; + } else { + endpoint_ll_node *prev_head = head; + head = (endpoint_ll_node *)gpr_malloc(sizeof(endpoint_ll_node)); + head->ep = ep; + head->next = prev_head; + } + gpr_mu_unlock(&g_endpoint_mutex); +} + +void grpc_network_status_unregister_endpoint(grpc_endpoint *ep) { + gpr_mu_lock(&g_endpoint_mutex); + GPR_ASSERT(head); + bool found = false; + endpoint_ll_node *prev = head; + // if we're unregistering the head, just move head to the next + if (ep == head->ep) { + head = head->next; + gpr_free(prev); + found = true; + } else { + for (endpoint_ll_node *curr = head->next; curr != NULL; curr = curr->next) { + if (ep == curr->ep) { + prev->next = curr->next; + gpr_free(curr); + found = true; + break; + } + prev = curr; + } + } + gpr_mu_unlock(&g_endpoint_mutex); + GPR_ASSERT(found); +} + +// Walk the linked-list from head and execute shutdown. It is possible that +// other threads might be in the process of shutdown as well, but that has +// no side effect since endpoint shutdown is idempotent. +void grpc_network_status_shutdown_all_endpoints() { + gpr_mu_lock(&g_endpoint_mutex); + if (head == NULL) { + gpr_mu_unlock(&g_endpoint_mutex); + return; + } + grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; + + for (endpoint_ll_node *curr = head; curr != NULL; curr = curr->next) { + curr->ep->vtable->shutdown(&exec_ctx, curr->ep); + } + gpr_mu_unlock(&g_endpoint_mutex); + grpc_exec_ctx_finish(&exec_ctx); +} diff --git a/src/core/lib/iomgr/network_status_tracker.h b/src/core/lib/iomgr/network_status_tracker.h new file mode 100644 index 0000000000..74a1aa8135 --- /dev/null +++ b/src/core/lib/iomgr/network_status_tracker.h @@ -0,0 +1,41 @@ +/* + * + * Copyright 2016, 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. + * + */ + +#ifndef GRPC_CORE_LIB_IOMGR_NETWORK_STATUS_TRACKER_H +#define GRPC_CORE_LIB_IOMGR_NETWORK_STATUS_TRACKER_H +#include "src/core/lib/iomgr/endpoint.h" + +void grpc_network_status_register_endpoint(grpc_endpoint *ep); +void grpc_network_status_unregister_endpoint(grpc_endpoint *ep); +void grpc_network_status_shutdown_all_endpoints(); +#endif /* GRPC_CORE_LIB_IOMGR_NETWORK_STATUS_TRACKER_H */ diff --git a/src/core/lib/iomgr/tcp_posix.c b/src/core/lib/iomgr/tcp_posix.c index 1046b60bcc..2ab45e33ce 100644 --- a/src/core/lib/iomgr/tcp_posix.c +++ b/src/core/lib/iomgr/tcp_posix.c @@ -35,6 +35,7 @@ #ifdef GPR_POSIX_SOCKET +#include "src/core/lib/iomgr/network_status_tracker.h" #include "src/core/lib/iomgr/tcp_posix.h" #include <errno.h> @@ -152,6 +153,7 @@ static void tcp_ref(grpc_tcp *tcp) { gpr_ref(&tcp->refcount); } #endif static void tcp_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { + grpc_network_status_unregister_endpoint(ep); grpc_tcp *tcp = (grpc_tcp *)ep; TCP_UNREF(exec_ctx, tcp, "destroy"); } @@ -474,6 +476,8 @@ grpc_endpoint *grpc_tcp_create(grpc_fd *em_fd, size_t slice_size, tcp->write_closure.cb = tcp_handle_write; tcp->write_closure.cb_arg = tcp; gpr_slice_buffer_init(&tcp->last_read_buffer); + /* Tell network status tracker about new endpoint */ + grpc_network_status_register_endpoint(&tcp->base); return &tcp->base; } diff --git a/src/core/lib/iomgr/tcp_windows.c b/src/core/lib/iomgr/tcp_windows.c index b2af8030aa..37ab59021e 100644 --- a/src/core/lib/iomgr/tcp_windows.c +++ b/src/core/lib/iomgr/tcp_windows.c @@ -37,6 +37,7 @@ #include <limits.h> +#include "src/core/lib/iomgr/network_status_tracker.h" #include "src/core/lib/iomgr/sockaddr_windows.h" #include <grpc/support/alloc.h> @@ -378,6 +379,7 @@ static void win_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { } static void win_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { + grpc_network_status_unregister_endpoint(ep); grpc_tcp *tcp = (grpc_tcp *)ep; TCP_UNREF(tcp, "destroy"); } @@ -401,6 +403,9 @@ grpc_endpoint *grpc_tcp_create(grpc_winsocket *socket, char *peer_string) { grpc_closure_init(&tcp->on_read, on_read, tcp); grpc_closure_init(&tcp->on_write, on_write, tcp); tcp->peer_string = gpr_strdup(peer_string); + /* Tell network status tracking code about the new endpoint */ + grpc_network_status_register_endpoint(&tcp->base); + return &tcp->base; } diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py index ea4d17351c..b37e27c27e 100644 --- a/src/python/grpcio/grpc_core_dependencies.py +++ b/src/python/grpcio/grpc_core_dependencies.py @@ -105,6 +105,7 @@ CORE_SOURCE_FILES = [ 'src/core/lib/iomgr/iomgr_posix.c', 'src/core/lib/iomgr/iomgr_windows.c', 'src/core/lib/iomgr/load_file.c', + 'src/core/lib/iomgr/network_status_tracker.c', 'src/core/lib/iomgr/polling_entity.c', 'src/core/lib/iomgr/pollset_set_windows.c', 'src/core/lib/iomgr/pollset_windows.c', |