diff options
Diffstat (limited to 'test/core/util/passthru_endpoint.c')
-rw-r--r-- | test/core/util/passthru_endpoint.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/test/core/util/passthru_endpoint.c b/test/core/util/passthru_endpoint.c new file mode 100644 index 0000000000..168ae59e91 --- /dev/null +++ b/test/core/util/passthru_endpoint.c @@ -0,0 +1,158 @@ +/* + * + * 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_enqueue(exec_ctx, cb, false, NULL); + } else if (m->read_buffer.count > 0) { + gpr_slice_buffer_swap(&m->read_buffer, slices); + grpc_exec_ctx_enqueue(exec_ctx, cb, true, 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); + bool ok = true; + if (m->parent->shutdown) { + ok = false; + } else if (m->on_read != NULL) { + gpr_slice_buffer_addn(m->on_read_out, slices->slices, slices->count); + grpc_exec_ctx_enqueue(exec_ctx, m->on_read, true, NULL); + m->on_read = NULL; + } else { + gpr_slice_buffer_addn(&m->read_buffer, slices->slices, slices->count); + } + gpr_mu_unlock(&m->parent->mu); + grpc_exec_ctx_enqueue(exec_ctx, cb, ok, 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_enqueue(exec_ctx, m->on_read, false, NULL); + m->on_read = NULL; + } + m = other_half(m); + if (m->on_read) { + grpc_exec_ctx_enqueue(exec_ctx, m->on_read, false, 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; +} |