| /* |
| * |
| * 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 "test/core/iomgr/endpoint_tests.h" |
| |
| #include <stdbool.h> |
| #include <sys/types.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/slice.h> |
| #include <grpc/support/time.h> |
| #include <grpc/support/useful.h> |
| #include "test/core/util/test_config.h" |
| |
| /* |
| General test notes: |
| |
| All tests which write data into an endpoint write i%256 into byte i, which |
| is verified by readers. |
| |
| In general there are a few interesting things to vary which may lead to |
| exercising different codepaths in an implementation: |
| 1. Total amount of data written to the endpoint |
| 2. Size of slice allocations |
| 3. Amount of data we read from or write to the endpoint at once |
| |
| The tests here tend to parameterize these where applicable. |
| |
| */ |
| |
| static gpr_mu *g_mu; |
| static grpc_pollset *g_pollset; |
| |
| size_t count_slices(gpr_slice *slices, size_t nslices, int *current_data) { |
| size_t num_bytes = 0; |
| size_t i; |
| size_t j; |
| unsigned char *buf; |
| for (i = 0; i < nslices; ++i) { |
| buf = GPR_SLICE_START_PTR(slices[i]); |
| for (j = 0; j < GPR_SLICE_LENGTH(slices[i]); ++j) { |
| GPR_ASSERT(buf[j] == *current_data); |
| *current_data = (*current_data + 1) % 256; |
| } |
| num_bytes += GPR_SLICE_LENGTH(slices[i]); |
| } |
| return num_bytes; |
| } |
| |
| static grpc_endpoint_test_fixture begin_test(grpc_endpoint_test_config config, |
| const char *test_name, |
| size_t slice_size) { |
| gpr_log(GPR_INFO, "%s/%s", test_name, config.name); |
| return config.create_fixture(slice_size); |
| } |
| |
| static void end_test(grpc_endpoint_test_config config) { config.clean_up(); } |
| |
| static gpr_slice *allocate_blocks(size_t num_bytes, size_t slice_size, |
| size_t *num_blocks, uint8_t *current_data) { |
| size_t nslices = num_bytes / slice_size + (num_bytes % slice_size ? 1 : 0); |
| gpr_slice *slices = gpr_malloc(sizeof(gpr_slice) * nslices); |
| size_t num_bytes_left = num_bytes; |
| size_t i; |
| size_t j; |
| unsigned char *buf; |
| *num_blocks = nslices; |
| |
| for (i = 0; i < nslices; ++i) { |
| slices[i] = gpr_slice_malloc(slice_size > num_bytes_left ? num_bytes_left |
| : slice_size); |
| num_bytes_left -= GPR_SLICE_LENGTH(slices[i]); |
| buf = GPR_SLICE_START_PTR(slices[i]); |
| for (j = 0; j < GPR_SLICE_LENGTH(slices[i]); ++j) { |
| buf[j] = *current_data; |
| (*current_data)++; |
| } |
| } |
| GPR_ASSERT(num_bytes_left == 0); |
| return slices; |
| } |
| |
| struct read_and_write_test_state { |
| grpc_endpoint *read_ep; |
| grpc_endpoint *write_ep; |
| size_t target_bytes; |
| size_t bytes_read; |
| size_t current_write_size; |
| size_t bytes_written; |
| int current_read_data; |
| uint8_t current_write_data; |
| int read_done; |
| int write_done; |
| gpr_slice_buffer incoming; |
| gpr_slice_buffer outgoing; |
| grpc_closure done_read; |
| grpc_closure done_write; |
| }; |
| |
| static void read_and_write_test_read_handler(grpc_exec_ctx *exec_ctx, |
| void *data, grpc_error *error) { |
| struct read_and_write_test_state *state = data; |
| |
| state->bytes_read += count_slices( |
| state->incoming.slices, state->incoming.count, &state->current_read_data); |
| if (state->bytes_read == state->target_bytes || error != GRPC_ERROR_NONE) { |
| gpr_log(GPR_INFO, "Read handler done"); |
| gpr_mu_lock(g_mu); |
| state->read_done = 1 + (error == GRPC_ERROR_NONE); |
| GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)); |
| gpr_mu_unlock(g_mu); |
| } else if (error == GRPC_ERROR_NONE) { |
| grpc_endpoint_read(exec_ctx, state->read_ep, &state->incoming, |
| &state->done_read); |
| } |
| } |
| |
| static void read_and_write_test_write_handler(grpc_exec_ctx *exec_ctx, |
| void *data, grpc_error *error) { |
| struct read_and_write_test_state *state = data; |
| gpr_slice *slices = NULL; |
| size_t nslices; |
| |
| if (error == GRPC_ERROR_NONE) { |
| state->bytes_written += state->current_write_size; |
| if (state->target_bytes - state->bytes_written < |
| state->current_write_size) { |
| state->current_write_size = state->target_bytes - state->bytes_written; |
| } |
| if (state->current_write_size != 0) { |
| slices = allocate_blocks(state->current_write_size, 8192, &nslices, |
| &state->current_write_data); |
| gpr_slice_buffer_reset_and_unref(&state->outgoing); |
| gpr_slice_buffer_addn(&state->outgoing, slices, nslices); |
| grpc_endpoint_write(exec_ctx, state->write_ep, &state->outgoing, |
| &state->done_write); |
| gpr_free(slices); |
| return; |
| } |
| } |
| |
| gpr_log(GPR_INFO, "Write handler done"); |
| gpr_mu_lock(g_mu); |
| state->write_done = 1 + (error == GRPC_ERROR_NONE); |
| GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)); |
| gpr_mu_unlock(g_mu); |
| } |
| |
| /* Do both reading and writing using the grpc_endpoint API. |
| |
| This also includes a test of the shutdown behavior. |
| */ |
| static void read_and_write_test(grpc_endpoint_test_config config, |
| size_t num_bytes, size_t write_size, |
| size_t slice_size, bool shutdown) { |
| struct read_and_write_test_state state; |
| gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(20); |
| grpc_endpoint_test_fixture f = |
| begin_test(config, "read_and_write_test", slice_size); |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| gpr_log(GPR_DEBUG, "num_bytes=%d write_size=%d slice_size=%d shutdown=%d", |
| num_bytes, write_size, slice_size, shutdown); |
| |
| if (shutdown) { |
| gpr_log(GPR_INFO, "Start read and write shutdown test"); |
| } else { |
| gpr_log(GPR_INFO, "Start read and write test with %d bytes, slice size %d", |
| num_bytes, slice_size); |
| } |
| |
| state.read_ep = f.client_ep; |
| state.write_ep = f.server_ep; |
| state.target_bytes = num_bytes; |
| state.bytes_read = 0; |
| state.current_write_size = write_size; |
| state.bytes_written = 0; |
| state.read_done = 0; |
| state.write_done = 0; |
| state.current_read_data = 0; |
| state.current_write_data = 0; |
| grpc_closure_init(&state.done_read, read_and_write_test_read_handler, &state); |
| grpc_closure_init(&state.done_write, read_and_write_test_write_handler, |
| &state); |
| gpr_slice_buffer_init(&state.outgoing); |
| gpr_slice_buffer_init(&state.incoming); |
| |
| /* Get started by pretending an initial write completed */ |
| /* NOTE: Sets up initial conditions so we can have the same write handler |
| for the first iteration as for later iterations. It does the right thing |
| even when bytes_written is unsigned. */ |
| state.bytes_written -= state.current_write_size; |
| read_and_write_test_write_handler(&exec_ctx, &state, GRPC_ERROR_NONE); |
| grpc_exec_ctx_finish(&exec_ctx); |
| |
| grpc_endpoint_read(&exec_ctx, state.read_ep, &state.incoming, |
| &state.done_read); |
| |
| if (shutdown) { |
| gpr_log(GPR_DEBUG, "shutdown read"); |
| grpc_endpoint_shutdown(&exec_ctx, state.read_ep); |
| gpr_log(GPR_DEBUG, "shutdown write"); |
| grpc_endpoint_shutdown(&exec_ctx, state.write_ep); |
| } |
| grpc_exec_ctx_finish(&exec_ctx); |
| |
| gpr_mu_lock(g_mu); |
| while (!state.read_done || !state.write_done) { |
| grpc_pollset_worker *worker = NULL; |
| GPR_ASSERT(gpr_time_cmp(gpr_now(GPR_CLOCK_MONOTONIC), deadline) < 0); |
| GPR_ASSERT(GRPC_LOG_IF_ERROR( |
| "pollset_work", |
| grpc_pollset_work(&exec_ctx, g_pollset, &worker, |
| gpr_now(GPR_CLOCK_MONOTONIC), deadline))); |
| } |
| gpr_mu_unlock(g_mu); |
| grpc_exec_ctx_finish(&exec_ctx); |
| |
| end_test(config); |
| gpr_slice_buffer_destroy(&state.outgoing); |
| gpr_slice_buffer_destroy(&state.incoming); |
| grpc_endpoint_destroy(&exec_ctx, state.read_ep); |
| grpc_endpoint_destroy(&exec_ctx, state.write_ep); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| |
| void grpc_endpoint_tests(grpc_endpoint_test_config config, |
| grpc_pollset *pollset, gpr_mu *mu) { |
| size_t i; |
| g_pollset = pollset; |
| g_mu = mu; |
| read_and_write_test(config, 10000000, 100000, 8192, false); |
| read_and_write_test(config, 1000000, 100000, 1, false); |
| read_and_write_test(config, 100000000, 100000, 1, true); |
| for (i = 1; i < 1000; i = GPR_MAX(i + 1, i * 5 / 4)) { |
| read_and_write_test(config, 40320, i, i, false); |
| } |
| g_pollset = NULL; |
| } |