| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include "src/core/lib/support/stack_lockfree.h" |
| |
| #include <stdlib.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/thd.h> |
| #include "test/core/util/test_config.h" |
| |
| /* max stack size supported */ |
| #define MAX_STACK_SIZE 65534 |
| |
| #define MAX_THREADS 32 |
| |
| static void test_serial_sized(size_t size) { |
| gpr_stack_lockfree *stack = gpr_stack_lockfree_create(size); |
| size_t i; |
| size_t j; |
| |
| /* First try popping empty */ |
| GPR_ASSERT(gpr_stack_lockfree_pop(stack) == -1); |
| |
| /* Now add one item and check it */ |
| gpr_stack_lockfree_push(stack, 3); |
| GPR_ASSERT(gpr_stack_lockfree_pop(stack) == 3); |
| GPR_ASSERT(gpr_stack_lockfree_pop(stack) == -1); |
| |
| /* Now add repeatedly more items and check them */ |
| for (i = 1; i < size; i *= 2) { |
| for (j = 0; j <= i; j++) { |
| GPR_ASSERT(gpr_stack_lockfree_push(stack, (int)j) == (j == 0)); |
| } |
| for (j = 0; j <= i; j++) { |
| GPR_ASSERT(gpr_stack_lockfree_pop(stack) == (int)(i - j)); |
| } |
| GPR_ASSERT(gpr_stack_lockfree_pop(stack) == -1); |
| } |
| |
| gpr_stack_lockfree_destroy(stack); |
| } |
| |
| static void test_serial() { |
| size_t i; |
| for (i = 128; i < MAX_STACK_SIZE; i *= 2) { |
| test_serial_sized(i); |
| } |
| test_serial_sized(MAX_STACK_SIZE); |
| } |
| |
| struct test_arg { |
| gpr_stack_lockfree *stack; |
| int stack_size; |
| int nthreads; |
| int rank; |
| int sum; |
| }; |
| |
| static void test_mt_body(void *v) { |
| struct test_arg *arg = (struct test_arg *)v; |
| int lo, hi; |
| int i; |
| int res; |
| lo = arg->rank * arg->stack_size / arg->nthreads; |
| hi = (arg->rank + 1) * arg->stack_size / arg->nthreads; |
| for (i = lo; i < hi; i++) { |
| gpr_stack_lockfree_push(arg->stack, i); |
| if ((res = gpr_stack_lockfree_pop(arg->stack)) != -1) { |
| arg->sum += res; |
| } |
| } |
| while ((res = gpr_stack_lockfree_pop(arg->stack)) != -1) { |
| arg->sum += res; |
| } |
| } |
| |
| static void test_mt_sized(size_t size, int nth) { |
| gpr_stack_lockfree *stack; |
| struct test_arg args[MAX_THREADS]; |
| gpr_thd_id thds[MAX_THREADS]; |
| int sum; |
| int i; |
| gpr_thd_options options = gpr_thd_options_default(); |
| |
| stack = gpr_stack_lockfree_create(size); |
| for (i = 0; i < nth; i++) { |
| args[i].stack = stack; |
| args[i].stack_size = (int)size; |
| args[i].nthreads = nth; |
| args[i].rank = i; |
| args[i].sum = 0; |
| } |
| gpr_thd_options_set_joinable(&options); |
| for (i = 0; i < nth; i++) { |
| GPR_ASSERT(gpr_thd_new(&thds[i], test_mt_body, &args[i], &options)); |
| } |
| sum = 0; |
| for (i = 0; i < nth; i++) { |
| gpr_thd_join(thds[i]); |
| sum = sum + args[i].sum; |
| } |
| GPR_ASSERT((unsigned)sum == ((unsigned)size * (size - 1)) / 2); |
| gpr_stack_lockfree_destroy(stack); |
| } |
| |
| static void test_mt() { |
| size_t size; |
| int nth; |
| for (nth = 1; nth < MAX_THREADS; nth++) { |
| for (size = 128; size < MAX_STACK_SIZE; size *= 2) { |
| test_mt_sized(size, nth); |
| } |
| test_mt_sized(MAX_STACK_SIZE, nth); |
| } |
| } |
| |
| int main(int argc, char **argv) { |
| grpc_test_init(argc, argv); |
| test_serial(); |
| test_mt(); |
| return 0; |
| } |