| /* |
| * |
| * Copyright 2014, 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 <string.h> |
| |
| #include "src/core/statistics/census_interface.h" |
| #include "src/core/statistics/census_tracing.h" |
| #include "src/core/statistics/census_tracing.h" |
| #include <grpc/support/log.h> |
| #include <grpc/support/port_platform.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/thd.h> |
| #include <grpc/support/time.h> |
| #include "test/core/util/test_config.h" |
| |
| /* Ensure all possible state transitions are called without causing problem */ |
| static void test_init_shutdown() { |
| census_tracing_init(); |
| census_tracing_init(); |
| census_tracing_shutdown(); |
| census_tracing_shutdown(); |
| census_tracing_init(); |
| } |
| |
| static void test_start_op_generates_locally_unique_ids() { |
| /* Check that ids generated within window size of 1000 are unique. |
| TODO(hongyu): Replace O(n^2) duplicate detection algorithm with O(nlogn) |
| algorithm. Enhance the test to larger window size (>10^6) */ |
| #define WINDOW_SIZE 1000 |
| census_op_id ids[WINDOW_SIZE]; |
| int i; |
| census_init(); |
| for (i = 0; i < WINDOW_SIZE; i++) { |
| ids[i] = census_tracing_start_op(); |
| census_tracing_end_op(ids[i]); |
| } |
| for (i = 0; i < WINDOW_SIZE - 1; i++) { |
| int j; |
| for (j = i + 1; j < WINDOW_SIZE; j++) { |
| GPR_ASSERT(ids[i].upper != ids[j].upper || ids[i].lower != ids[j].lower); |
| } |
| } |
| #undef WINDOW_SIZE |
| census_shutdown(); |
| } |
| |
| static void test_get_trace_method_name() { |
| census_op_id id; |
| const char write_name[] = "service/method"; |
| census_tracing_init(); |
| id = census_tracing_start_op(); |
| census_add_method_tag(id, write_name); |
| census_internal_lock_trace_store(); |
| { |
| const char* read_name = |
| census_get_trace_method_name(census_get_trace_obj_locked(id)); |
| GPR_ASSERT(strcmp(read_name, write_name) == 0); |
| } |
| census_internal_unlock_trace_store(); |
| census_tracing_shutdown(); |
| } |
| |
| typedef struct thd_arg { |
| int num_done; |
| gpr_cv done; |
| gpr_mu mu; |
| } thd_arg; |
| |
| static void mimic_trace_op_sequences(void* arg) { |
| census_op_id id; |
| char method_name[200]; |
| int i = 0; |
| const int num_iter = 200; |
| thd_arg* args = (thd_arg*)arg; |
| GPR_ASSERT(args != NULL); |
| gpr_log(GPR_INFO, "Start trace op sequence thread."); |
| for (i = 0; i < num_iter; i++) { |
| id = census_tracing_start_op(); |
| census_add_method_tag(id, method_name); |
| /* pretend doing 1us work. */ |
| gpr_sleep_until(gpr_time_add(gpr_now(), gpr_time_from_micros(1))); |
| census_tracing_end_op(id); |
| } |
| gpr_log(GPR_INFO, "End trace op sequence thread."); |
| gpr_mu_lock(&args->mu); |
| args->num_done += 1; |
| gpr_cv_broadcast(&args->done); |
| gpr_mu_unlock(&args->mu); |
| } |
| |
| static void test_concurrency() { |
| #define NUM_THREADS 1000 |
| gpr_thd_id tid[NUM_THREADS]; |
| int i = 0; |
| thd_arg arg; |
| arg.num_done = 0; |
| gpr_mu_init(&arg.mu); |
| gpr_cv_init(&arg.done); |
| census_tracing_init(); |
| for (i = 0; i < NUM_THREADS; ++i) { |
| gpr_thd_new(tid + i, mimic_trace_op_sequences, &arg, NULL); |
| } |
| while (arg.num_done < NUM_THREADS) { |
| gpr_log(GPR_INFO, "num done %d", arg.num_done); |
| gpr_cv_wait(&arg.done, &arg.mu, gpr_inf_future); |
| } |
| census_tracing_shutdown(); |
| #undef NUM_THREADS |
| } |
| |
| static void test_add_method_tag_to_unknown_op_id() { |
| census_op_id unknown_id = {0xDEAD, 0xBEEF}; |
| int ret = 0; |
| census_tracing_init(); |
| ret = census_add_method_tag(unknown_id, "foo"); |
| GPR_ASSERT(ret != 0); |
| census_tracing_shutdown(); |
| } |
| |
| int main(int argc, char** argv) { |
| grpc_test_init(argc, argv); |
| test_init_shutdown(); |
| test_start_op_generates_locally_unique_ids(); |
| test_get_trace_method_name(); |
| test_concurrency(); |
| test_add_method_tag_to_unknown_op_id(); |
| return 0; |
| } |