From 45724b35e411fef7c5da66a74c78428c11d56843 Mon Sep 17 00:00:00 2001 From: Craig Tiller Date: Tue, 22 Sep 2015 10:42:19 -0700 Subject: indent pass to get logical source lines on one physical line --- src/core/iomgr/udp_server.c | 459 ++++++++++++++++++++++++-------------------- 1 file changed, 255 insertions(+), 204 deletions(-) (limited to 'src/core/iomgr/udp_server.c') diff --git a/src/core/iomgr/udp_server.c b/src/core/iomgr/udp_server.c index 0f0bea82ab..490b3de205 100644 --- a/src/core/iomgr/udp_server.c +++ b/src/core/iomgr/udp_server.c @@ -69,11 +69,13 @@ #define INIT_PORT_CAP 2 /* one listening port */ -typedef struct { +typedef struct +{ int fd; grpc_fd *emfd; grpc_udp_server *server; - union { + union + { gpr_uint8 untyped[GRPC_MAX_SOCKADDR_SIZE]; struct sockaddr sockaddr; struct sockaddr_un un; @@ -84,16 +86,20 @@ typedef struct { grpc_udp_server_read_cb read_cb; } server_port; -static void unlink_if_unix_domain_socket(const struct sockaddr_un *un) { +static void +unlink_if_unix_domain_socket (const struct sockaddr_un *un) +{ struct stat st; - if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) { - unlink(un->sun_path); - } + if (stat (un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) + { + unlink (un->sun_path); + } } /* the overall server */ -struct grpc_udp_server { +struct grpc_udp_server +{ gpr_mu mu; gpr_cv cv; @@ -119,206 +125,237 @@ struct grpc_udp_server { size_t pollset_count; }; -grpc_udp_server *grpc_udp_server_create(void) { - grpc_udp_server *s = gpr_malloc(sizeof(grpc_udp_server)); - gpr_mu_init(&s->mu); - gpr_cv_init(&s->cv); +grpc_udp_server * +grpc_udp_server_create (void) +{ + grpc_udp_server *s = gpr_malloc (sizeof (grpc_udp_server)); + gpr_mu_init (&s->mu); + gpr_cv_init (&s->cv); s->active_ports = 0; s->destroyed_ports = 0; s->shutdown = 0; - s->ports = gpr_malloc(sizeof(server_port) * INIT_PORT_CAP); + s->ports = gpr_malloc (sizeof (server_port) * INIT_PORT_CAP); s->nports = 0; s->port_capacity = INIT_PORT_CAP; return s; } -static void finish_shutdown(grpc_udp_server *s, - grpc_closure_list *closure_list) { - grpc_closure_list_add(closure_list, s->shutdown_complete, 1); +static void +finish_shutdown (grpc_udp_server * s, grpc_closure_list * closure_list) +{ + grpc_closure_list_add (closure_list, s->shutdown_complete, 1); - gpr_mu_destroy(&s->mu); - gpr_cv_destroy(&s->cv); + gpr_mu_destroy (&s->mu); + gpr_cv_destroy (&s->cv); - gpr_free(s->ports); - gpr_free(s); + gpr_free (s->ports); + gpr_free (s); } -static void destroyed_port(void *server, int success, - grpc_closure_list *closure_list) { +static void +destroyed_port (void *server, int success, grpc_closure_list * closure_list) +{ grpc_udp_server *s = server; - gpr_mu_lock(&s->mu); + gpr_mu_lock (&s->mu); s->destroyed_ports++; - if (s->destroyed_ports == s->nports) { - gpr_mu_unlock(&s->mu); - finish_shutdown(s, closure_list); - } else { - gpr_mu_unlock(&s->mu); - } + if (s->destroyed_ports == s->nports) + { + gpr_mu_unlock (&s->mu); + finish_shutdown (s, closure_list); + } + else + { + gpr_mu_unlock (&s->mu); + } } /* called when all listening endpoints have been shutdown, so no further events will be received on them - at this point it's safe to destroy things */ -static void deactivated_all_ports(grpc_udp_server *s, - grpc_closure_list *closure_list) { +static void +deactivated_all_ports (grpc_udp_server * s, grpc_closure_list * closure_list) +{ size_t i; /* delete ALL the things */ - gpr_mu_lock(&s->mu); - - if (!s->shutdown) { - gpr_mu_unlock(&s->mu); - return; - } - - if (s->nports) { - for (i = 0; i < s->nports; i++) { - server_port *sp = &s->ports[i]; - if (sp->addr.sockaddr.sa_family == AF_UNIX) { - unlink_if_unix_domain_socket(&sp->addr.un); - } - sp->destroyed_closure.cb = destroyed_port; - sp->destroyed_closure.cb_arg = s; - grpc_fd_orphan(sp->emfd, &sp->destroyed_closure, "udp_listener_shutdown", - closure_list); + gpr_mu_lock (&s->mu); + + if (!s->shutdown) + { + gpr_mu_unlock (&s->mu); + return; + } + + if (s->nports) + { + for (i = 0; i < s->nports; i++) + { + server_port *sp = &s->ports[i]; + if (sp->addr.sockaddr.sa_family == AF_UNIX) + { + unlink_if_unix_domain_socket (&sp->addr.un); + } + sp->destroyed_closure.cb = destroyed_port; + sp->destroyed_closure.cb_arg = s; + grpc_fd_orphan (sp->emfd, &sp->destroyed_closure, "udp_listener_shutdown", closure_list); + } + gpr_mu_unlock (&s->mu); + } + else + { + gpr_mu_unlock (&s->mu); + finish_shutdown (s, closure_list); } - gpr_mu_unlock(&s->mu); - } else { - gpr_mu_unlock(&s->mu); - finish_shutdown(s, closure_list); - } } -void grpc_udp_server_destroy(grpc_udp_server *s, grpc_closure *on_done, - grpc_closure_list *closure_list) { +void +grpc_udp_server_destroy (grpc_udp_server * s, grpc_closure * on_done, grpc_closure_list * closure_list) +{ size_t i; - gpr_mu_lock(&s->mu); + gpr_mu_lock (&s->mu); - GPR_ASSERT(!s->shutdown); + GPR_ASSERT (!s->shutdown); s->shutdown = 1; s->shutdown_complete = on_done; /* shutdown all fd's */ - if (s->active_ports) { - for (i = 0; i < s->nports; i++) { - grpc_fd_shutdown(s->ports[i].emfd, closure_list); + if (s->active_ports) + { + for (i = 0; i < s->nports; i++) + { + grpc_fd_shutdown (s->ports[i].emfd, closure_list); + } + gpr_mu_unlock (&s->mu); + } + else + { + gpr_mu_unlock (&s->mu); + deactivated_all_ports (s, closure_list); } - gpr_mu_unlock(&s->mu); - } else { - gpr_mu_unlock(&s->mu); - deactivated_all_ports(s, closure_list); - } } /* Prepare a recently-created socket for listening. */ -static int prepare_socket(int fd, const struct sockaddr *addr, - size_t addr_len) { +static int +prepare_socket (int fd, const struct sockaddr *addr, size_t addr_len) +{ struct sockaddr_storage sockname_temp; socklen_t sockname_len; int get_local_ip; int rc; - if (fd < 0) { - goto error; - } + if (fd < 0) + { + goto error; + } - if (!grpc_set_socket_nonblocking(fd, 1) || !grpc_set_socket_cloexec(fd, 1)) { - gpr_log(GPR_ERROR, "Unable to configure socket %d: %s", fd, - strerror(errno)); - } + if (!grpc_set_socket_nonblocking (fd, 1) || !grpc_set_socket_cloexec (fd, 1)) + { + gpr_log (GPR_ERROR, "Unable to configure socket %d: %s", fd, strerror (errno)); + } get_local_ip = 1; - rc = setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &get_local_ip, - sizeof(get_local_ip)); - if (rc == 0 && addr->sa_family == AF_INET6) { + rc = setsockopt (fd, IPPROTO_IP, IP_PKTINFO, &get_local_ip, sizeof (get_local_ip)); + if (rc == 0 && addr->sa_family == AF_INET6) + { #if !TARGET_OS_IPHONE - rc = setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &get_local_ip, - sizeof(get_local_ip)); + rc = setsockopt (fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &get_local_ip, sizeof (get_local_ip)); #endif - } + } - GPR_ASSERT(addr_len < ~(socklen_t)0); - if (bind(fd, addr, (socklen_t)addr_len) < 0) { - char *addr_str; - grpc_sockaddr_to_string(&addr_str, addr, 0); - gpr_log(GPR_ERROR, "bind addr=%s: %s", addr_str, strerror(errno)); - gpr_free(addr_str); - goto error; - } + GPR_ASSERT (addr_len < ~(socklen_t) 0); + if (bind (fd, addr, (socklen_t) addr_len) < 0) + { + char *addr_str; + grpc_sockaddr_to_string (&addr_str, addr, 0); + gpr_log (GPR_ERROR, "bind addr=%s: %s", addr_str, strerror (errno)); + gpr_free (addr_str); + goto error; + } - sockname_len = sizeof(sockname_temp); - if (getsockname(fd, (struct sockaddr *)&sockname_temp, &sockname_len) < 0) { - goto error; - } + sockname_len = sizeof (sockname_temp); + if (getsockname (fd, (struct sockaddr *) &sockname_temp, &sockname_len) < 0) + { + goto error; + } - return grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp); + return grpc_sockaddr_get_port ((struct sockaddr *) &sockname_temp); error: - if (fd >= 0) { - close(fd); - } + if (fd >= 0) + { + close (fd); + } return -1; } /* event manager callback when reads are ready */ -static void on_read(void *arg, int success, grpc_closure_list *closure_list) { +static void +on_read (void *arg, int success, grpc_closure_list * closure_list) +{ server_port *sp = arg; - if (success == 0) { - gpr_mu_lock(&sp->server->mu); - if (0 == --sp->server->active_ports) { - gpr_mu_unlock(&sp->server->mu); - deactivated_all_ports(sp->server, closure_list); - } else { - gpr_mu_unlock(&sp->server->mu); + if (success == 0) + { + gpr_mu_lock (&sp->server->mu); + if (0 == --sp->server->active_ports) + { + gpr_mu_unlock (&sp->server->mu); + deactivated_all_ports (sp->server, closure_list); + } + else + { + gpr_mu_unlock (&sp->server->mu); + } + return; } - return; - } /* Tell the registered callback that data is available to read. */ - GPR_ASSERT(sp->read_cb); - sp->read_cb(sp->fd); + GPR_ASSERT (sp->read_cb); + sp->read_cb (sp->fd); /* Re-arm the notification event so we get another chance to read. */ - grpc_fd_notify_on_read(sp->emfd, &sp->read_closure, closure_list); + grpc_fd_notify_on_read (sp->emfd, &sp->read_closure, closure_list); } -static int add_socket_to_server(grpc_udp_server *s, int fd, - const struct sockaddr *addr, size_t addr_len, - grpc_udp_server_read_cb read_cb) { +static int +add_socket_to_server (grpc_udp_server * s, int fd, const struct sockaddr *addr, size_t addr_len, grpc_udp_server_read_cb read_cb) +{ server_port *sp; int port; char *addr_str; char *name; - port = prepare_socket(fd, addr, addr_len); - if (port >= 0) { - grpc_sockaddr_to_string(&addr_str, (struct sockaddr *)&addr, 1); - gpr_asprintf(&name, "udp-server-listener:%s", addr_str); - gpr_mu_lock(&s->mu); - /* append it to the list under a lock */ - if (s->nports == s->port_capacity) { - s->port_capacity *= 2; - s->ports = gpr_realloc(s->ports, sizeof(server_port) * s->port_capacity); + port = prepare_socket (fd, addr, addr_len); + if (port >= 0) + { + grpc_sockaddr_to_string (&addr_str, (struct sockaddr *) &addr, 1); + gpr_asprintf (&name, "udp-server-listener:%s", addr_str); + gpr_mu_lock (&s->mu); + /* append it to the list under a lock */ + if (s->nports == s->port_capacity) + { + s->port_capacity *= 2; + s->ports = gpr_realloc (s->ports, sizeof (server_port) * s->port_capacity); + } + sp = &s->ports[s->nports++]; + sp->server = s; + sp->fd = fd; + sp->emfd = grpc_fd_create (fd, name); + memcpy (sp->addr.untyped, addr, addr_len); + sp->addr_len = addr_len; + sp->read_cb = read_cb; + GPR_ASSERT (sp->emfd); + gpr_mu_unlock (&s->mu); } - sp = &s->ports[s->nports++]; - sp->server = s; - sp->fd = fd; - sp->emfd = grpc_fd_create(fd, name); - memcpy(sp->addr.untyped, addr, addr_len); - sp->addr_len = addr_len; - sp->read_cb = read_cb; - GPR_ASSERT(sp->emfd); - gpr_mu_unlock(&s->mu); - } return port; } -int grpc_udp_server_add_port(grpc_udp_server *s, const void *addr, - size_t addr_len, grpc_udp_server_read_cb read_cb) { +int +grpc_udp_server_add_port (grpc_udp_server * s, const void *addr, size_t addr_len, grpc_udp_server_read_cb read_cb) +{ int allocated_port1 = -1; int allocated_port2 = -1; unsigned i; @@ -333,103 +370,117 @@ int grpc_udp_server_add_port(grpc_udp_server *s, const void *addr, socklen_t sockname_len; int port; - if (((struct sockaddr *)addr)->sa_family == AF_UNIX) { - unlink_if_unix_domain_socket(addr); - } + if (((struct sockaddr *) addr)->sa_family == AF_UNIX) + { + unlink_if_unix_domain_socket (addr); + } /* Check if this is a wildcard port, and if so, try to keep the port the same as some previously created listener. */ - if (grpc_sockaddr_get_port(addr) == 0) { - for (i = 0; i < s->nports; i++) { - sockname_len = sizeof(sockname_temp); - if (0 == getsockname(s->ports[i].fd, (struct sockaddr *)&sockname_temp, - &sockname_len)) { - port = grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp); - if (port > 0) { - allocated_addr = malloc(addr_len); - memcpy(allocated_addr, addr, addr_len); - grpc_sockaddr_set_port(allocated_addr, port); - addr = allocated_addr; - break; - } - } + if (grpc_sockaddr_get_port (addr) == 0) + { + for (i = 0; i < s->nports; i++) + { + sockname_len = sizeof (sockname_temp); + if (0 == getsockname (s->ports[i].fd, (struct sockaddr *) &sockname_temp, &sockname_len)) + { + port = grpc_sockaddr_get_port ((struct sockaddr *) &sockname_temp); + if (port > 0) + { + allocated_addr = malloc (addr_len); + memcpy (allocated_addr, addr, addr_len); + grpc_sockaddr_set_port (allocated_addr, port); + addr = allocated_addr; + break; + } + } + } } - } - if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) { - addr = (const struct sockaddr *)&addr6_v4mapped; - addr_len = sizeof(addr6_v4mapped); - } + if (grpc_sockaddr_to_v4mapped (addr, &addr6_v4mapped)) + { + addr = (const struct sockaddr *) &addr6_v4mapped; + addr_len = sizeof (addr6_v4mapped); + } /* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */ - if (grpc_sockaddr_is_wildcard(addr, &port)) { - grpc_sockaddr_make_wildcards(port, &wild4, &wild6); - - /* Try listening on IPv6 first. */ - addr = (struct sockaddr *)&wild6; - addr_len = sizeof(wild6); - fd = grpc_create_dualstack_socket(addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode); - allocated_port1 = add_socket_to_server(s, fd, addr, addr_len, read_cb); - if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) { - goto done; + if (grpc_sockaddr_is_wildcard (addr, &port)) + { + grpc_sockaddr_make_wildcards (port, &wild4, &wild6); + + /* Try listening on IPv6 first. */ + addr = (struct sockaddr *) &wild6; + addr_len = sizeof (wild6); + fd = grpc_create_dualstack_socket (addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode); + allocated_port1 = add_socket_to_server (s, fd, addr, addr_len, read_cb); + if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) + { + goto done; + } + + /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */ + if (port == 0 && allocated_port1 > 0) + { + grpc_sockaddr_set_port ((struct sockaddr *) &wild4, allocated_port1); + } + addr = (struct sockaddr *) &wild4; + addr_len = sizeof (wild4); } - /* If we didn't get a dualstack socket, also listen on 0.0.0.0. */ - if (port == 0 && allocated_port1 > 0) { - grpc_sockaddr_set_port((struct sockaddr *)&wild4, allocated_port1); + fd = grpc_create_dualstack_socket (addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode); + if (fd < 0) + { + gpr_log (GPR_ERROR, "Unable to create socket: %s", strerror (errno)); } - addr = (struct sockaddr *)&wild4; - addr_len = sizeof(wild4); - } - - fd = grpc_create_dualstack_socket(addr, SOCK_DGRAM, IPPROTO_UDP, &dsmode); - if (fd < 0) { - gpr_log(GPR_ERROR, "Unable to create socket: %s", strerror(errno)); - } - if (dsmode == GRPC_DSMODE_IPV4 && - grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) { - addr = (struct sockaddr *)&addr4_copy; - addr_len = sizeof(addr4_copy); - } - allocated_port2 = add_socket_to_server(s, fd, addr, addr_len, read_cb); + if (dsmode == GRPC_DSMODE_IPV4 && grpc_sockaddr_is_v4mapped (addr, &addr4_copy)) + { + addr = (struct sockaddr *) &addr4_copy; + addr_len = sizeof (addr4_copy); + } + allocated_port2 = add_socket_to_server (s, fd, addr, addr_len, read_cb); done: - gpr_free(allocated_addr); + gpr_free (allocated_addr); return allocated_port1 >= 0 ? allocated_port1 : allocated_port2; } -int grpc_udp_server_get_fd(grpc_udp_server *s, unsigned index) { +int +grpc_udp_server_get_fd (grpc_udp_server * s, unsigned index) +{ return (index < s->nports) ? s->ports[index].fd : -1; } -void grpc_udp_server_start(grpc_udp_server *s, grpc_pollset **pollsets, - size_t pollset_count, - grpc_closure_list *closure_list) { +void +grpc_udp_server_start (grpc_udp_server * s, grpc_pollset ** pollsets, size_t pollset_count, grpc_closure_list * closure_list) +{ size_t i, j; - gpr_mu_lock(&s->mu); - GPR_ASSERT(s->active_ports == 0); + gpr_mu_lock (&s->mu); + GPR_ASSERT (s->active_ports == 0); s->pollsets = pollsets; - for (i = 0; i < s->nports; i++) { - for (j = 0; j < pollset_count; j++) { - grpc_pollset_add_fd(pollsets[j], s->ports[i].emfd, closure_list); + for (i = 0; i < s->nports; i++) + { + for (j = 0; j < pollset_count; j++) + { + grpc_pollset_add_fd (pollsets[j], s->ports[i].emfd, closure_list); + } + s->ports[i].read_closure.cb = on_read; + s->ports[i].read_closure.cb_arg = &s->ports[i]; + grpc_fd_notify_on_read (s->ports[i].emfd, &s->ports[i].read_closure, closure_list); + s->active_ports++; } - s->ports[i].read_closure.cb = on_read; - s->ports[i].read_closure.cb_arg = &s->ports[i]; - grpc_fd_notify_on_read(s->ports[i].emfd, &s->ports[i].read_closure, - closure_list); - s->active_ports++; - } - gpr_mu_unlock(&s->mu); + gpr_mu_unlock (&s->mu); } /* TODO(rjshade): Add a test for this method. */ -void grpc_udp_server_write(server_port *sp, const char *buffer, size_t buf_len, - const struct sockaddr *peer_address) { +void +grpc_udp_server_write (server_port * sp, const char *buffer, size_t buf_len, const struct sockaddr *peer_address) +{ ssize_t rc; - rc = sendto(sp->fd, buffer, buf_len, 0, peer_address, sizeof(peer_address)); - if (rc < 0) { - gpr_log(GPR_ERROR, "Unable to send data: %s", strerror(errno)); - } + rc = sendto (sp->fd, buffer, buf_len, 0, peer_address, sizeof (peer_address)); + if (rc < 0) + { + gpr_log (GPR_ERROR, "Unable to send data: %s", strerror (errno)); + } } #endif -- cgit v1.2.3