| /* |
| * |
| * 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. |
| * |
| */ |
| |
| #include "test/core/util/passthru_endpoint.h" |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| |
| typedef struct passthru_endpoint passthru_endpoint; |
| |
| typedef struct { |
| grpc_endpoint base; |
| passthru_endpoint *parent; |
| gpr_slice_buffer read_buffer; |
| gpr_slice_buffer *on_read_out; |
| grpc_closure *on_read; |
| } half; |
| |
| struct passthru_endpoint { |
| gpr_mu mu; |
| int halves; |
| bool shutdown; |
| half client; |
| half server; |
| }; |
| |
| static void me_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| gpr_slice_buffer *slices, grpc_closure *cb) { |
| half *m = (half *)ep; |
| gpr_mu_lock(&m->parent->mu); |
| if (m->parent->shutdown) { |
| grpc_exec_ctx_sched(exec_ctx, cb, GRPC_ERROR_CREATE("Already shutdown"), |
| NULL); |
| } else if (m->read_buffer.count > 0) { |
| gpr_slice_buffer_swap(&m->read_buffer, slices); |
| grpc_exec_ctx_sched(exec_ctx, cb, GRPC_ERROR_NONE, NULL); |
| } else { |
| m->on_read = cb; |
| m->on_read_out = slices; |
| } |
| gpr_mu_unlock(&m->parent->mu); |
| } |
| |
| static half *other_half(half *h) { |
| if (h == &h->parent->client) return &h->parent->server; |
| return &h->parent->client; |
| } |
| |
| static void me_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| gpr_slice_buffer *slices, grpc_closure *cb) { |
| half *m = other_half((half *)ep); |
| gpr_mu_lock(&m->parent->mu); |
| grpc_error *error = GRPC_ERROR_NONE; |
| if (m->parent->shutdown) { |
| error = GRPC_ERROR_CREATE("Endpoint already shutdown"); |
| } else if (m->on_read != NULL) { |
| for (size_t i = 0; i < slices->count; i++) { |
| gpr_slice_buffer_add(m->on_read_out, gpr_slice_ref(slices->slices[i])); |
| } |
| grpc_exec_ctx_sched(exec_ctx, m->on_read, GRPC_ERROR_NONE, NULL); |
| m->on_read = NULL; |
| } else { |
| for (size_t i = 0; i < slices->count; i++) { |
| gpr_slice_buffer_add(&m->read_buffer, gpr_slice_ref(slices->slices[i])); |
| } |
| } |
| gpr_mu_unlock(&m->parent->mu); |
| grpc_exec_ctx_sched(exec_ctx, cb, error, NULL); |
| } |
| |
| static void me_add_to_pollset(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| grpc_pollset *pollset) {} |
| |
| static void me_add_to_pollset_set(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, |
| grpc_pollset_set *pollset) {} |
| |
| static void me_shutdown(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { |
| half *m = (half *)ep; |
| gpr_mu_lock(&m->parent->mu); |
| m->parent->shutdown = true; |
| if (m->on_read) { |
| grpc_exec_ctx_sched(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"), |
| NULL); |
| m->on_read = NULL; |
| } |
| m = other_half(m); |
| if (m->on_read) { |
| grpc_exec_ctx_sched(exec_ctx, m->on_read, GRPC_ERROR_CREATE("Shutdown"), |
| NULL); |
| m->on_read = NULL; |
| } |
| gpr_mu_unlock(&m->parent->mu); |
| } |
| |
| static void me_destroy(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep) { |
| passthru_endpoint *p = ((half *)ep)->parent; |
| gpr_mu_lock(&p->mu); |
| if (0 == --p->halves) { |
| gpr_mu_unlock(&p->mu); |
| gpr_mu_destroy(&p->mu); |
| gpr_slice_buffer_destroy(&p->client.read_buffer); |
| gpr_slice_buffer_destroy(&p->server.read_buffer); |
| gpr_free(p); |
| } else { |
| gpr_mu_unlock(&p->mu); |
| } |
| } |
| |
| static char *me_get_peer(grpc_endpoint *ep) { |
| return gpr_strdup("fake:mock_endpoint"); |
| } |
| |
| static const grpc_endpoint_vtable vtable = { |
| me_read, me_write, me_add_to_pollset, me_add_to_pollset_set, |
| me_shutdown, me_destroy, me_get_peer, |
| }; |
| |
| static void half_init(half *m, passthru_endpoint *parent) { |
| m->base.vtable = &vtable; |
| m->parent = parent; |
| gpr_slice_buffer_init(&m->read_buffer); |
| m->on_read = NULL; |
| } |
| |
| void grpc_passthru_endpoint_create(grpc_endpoint **client, |
| grpc_endpoint **server) { |
| passthru_endpoint *m = gpr_malloc(sizeof(*m)); |
| m->halves = 2; |
| m->shutdown = 0; |
| half_init(&m->client, m); |
| half_init(&m->server, m); |
| gpr_mu_init(&m->mu); |
| *client = &m->client.base; |
| *server = &m->server.base; |
| } |