From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- nsprpub/pr/tests/stack.c | 282 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 282 insertions(+) create mode 100644 nsprpub/pr/tests/stack.c (limited to 'nsprpub/pr/tests/stack.c') diff --git a/nsprpub/pr/tests/stack.c b/nsprpub/pr/tests/stack.c new file mode 100644 index 0000000000..5526a27445 --- /dev/null +++ b/nsprpub/pr/tests/stack.c @@ -0,0 +1,282 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + + +/* + * + * Test atomic stack operations + * + * Two stacks are created and threads add data items (each containing + * one of the first n integers) to the first stack, remove data items + * from the first stack and add them to the second stack. The primordial + * thread compares the sum of the first n integers to the sum of the + * integers in the data items in the second stack. The test succeeds if + * they are equal. + */ + +#include "nspr.h" +#include "plgetopt.h" + +typedef struct _DataRecord { + PRInt32 data; + PRStackElem link; +} DataRecord; + +#define RECORD_LINK_PTR(lp) ((DataRecord*) ((char*) (lp) - offsetof(DataRecord,link))) + +#define MAX_THREAD_CNT 100 +#define DEFAULT_THREAD_CNT 4 +#define DEFAULT_DATA_CNT 100 +#define DEFAULT_LOOP_CNT 10000 + +/* + * sum of the first n numbers using the formula n*(n+1)/2 + */ +#define SUM_OF_NUMBERS(n) ((n & 1) ? (((n + 1)/2) * n) : ((n/2) * (n+1))) + +typedef struct stack_data { + PRStack *list1; + PRStack *list2; + PRInt32 initial_data_value; + PRInt32 data_cnt; + PRInt32 loops; +} stack_data; + +static void stackop(void *arg); + +static int _debug_on; + +PRFileDesc *output; +PRFileDesc *errhandle; + +int main(int argc, char **argv) +{ + PRInt32 rv, cnt, sum; + DataRecord *Item; + PRStack *list1, *list2; + PRStackElem *node; + PRStatus rc; + + PRInt32 thread_cnt = DEFAULT_THREAD_CNT; + PRInt32 data_cnt = DEFAULT_DATA_CNT; + PRInt32 loops = DEFAULT_LOOP_CNT; + PRThread **threads; + stack_data *thread_args; + + PLOptStatus os; + PLOptState *opt = PL_CreateOptState(argc, argv, "dt:c:l:"); + + while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) + { + if (PL_OPT_BAD == os) { + continue; + } + switch (opt->option) + { + case 'd': /* debug mode */ + _debug_on = 1; + break; + case 't': /* thread count */ + thread_cnt = atoi(opt->value); + break; + case 'c': /* data count */ + data_cnt = atoi(opt->value); + break; + case 'l': /* loop count */ + loops = atoi(opt->value); + break; + default: + break; + } + } + PL_DestroyOptState(opt); + + PR_SetConcurrency(4); + + output = PR_GetSpecialFD(PR_StandardOutput); + errhandle = PR_GetSpecialFD(PR_StandardError); + list1 = PR_CreateStack("Stack_1"); + if (list1 == NULL) { + PR_fprintf(errhandle, "PR_CreateStack failed - error %d\n", + PR_GetError()); + return 1; + } + + list2 = PR_CreateStack("Stack_2"); + if (list2 == NULL) { + PR_fprintf(errhandle, "PR_CreateStack failed - error %d\n", + PR_GetError()); + return 1; + } + + + threads = (PRThread**) PR_CALLOC(sizeof(PRThread*) * thread_cnt); + thread_args = (stack_data *) PR_CALLOC(sizeof(stack_data) * thread_cnt); + + if (_debug_on) + PR_fprintf(output,"%s: thread_cnt = %d data_cnt = %d\n", argv[0], + thread_cnt, data_cnt); + for(cnt = 0; cnt < thread_cnt; cnt++) { + PRThreadScope scope; + + thread_args[cnt].list1 = list1; + thread_args[cnt].list2 = list2; + thread_args[cnt].loops = loops; + thread_args[cnt].data_cnt = data_cnt; + thread_args[cnt].initial_data_value = 1 + cnt * data_cnt; + + if (cnt & 1) { + scope = PR_GLOBAL_THREAD; + } + else { + scope = PR_LOCAL_THREAD; + } + + + threads[cnt] = PR_CreateThread(PR_USER_THREAD, + stackop, &thread_args[cnt], + PR_PRIORITY_NORMAL, + scope, + PR_JOINABLE_THREAD, + 0); + if (threads[cnt] == NULL) { + PR_fprintf(errhandle, "PR_CreateThread failed - error %d\n", + PR_GetError()); + PR_ProcessExit(2); + } + if (_debug_on) + PR_fprintf(output,"%s: created thread = 0x%x\n", argv[0], + threads[cnt]); + } + + for(cnt = 0; cnt < thread_cnt; cnt++) { + rc = PR_JoinThread(threads[cnt]); + PR_ASSERT(rc == PR_SUCCESS); + } + + node = PR_StackPop(list1); + /* + * list1 should be empty + */ + if (node != NULL) { + PR_fprintf(errhandle, "Error - Stack 1 not empty\n"); + PR_ASSERT(node == NULL); + PR_ProcessExit(4); + } + + cnt = data_cnt * thread_cnt; + sum = 0; + while (cnt-- > 0) { + node = PR_StackPop(list2); + /* + * There should be at least 'cnt' number of records + */ + if (node == NULL) { + PR_fprintf(errhandle, "Error - PR_StackPop returned NULL\n"); + PR_ProcessExit(3); + } + Item = RECORD_LINK_PTR(node); + sum += Item->data; + } + node = PR_StackPop(list2); + /* + * there should be exactly 'cnt' number of records + */ + if (node != NULL) { + PR_fprintf(errhandle, "Error - Stack 2 not empty\n"); + PR_ASSERT(node == NULL); + PR_ProcessExit(4); + } + PR_DELETE(threads); + PR_DELETE(thread_args); + + PR_DestroyStack(list1); + PR_DestroyStack(list2); + + if (sum == SUM_OF_NUMBERS(data_cnt * thread_cnt)) { + PR_fprintf(output, "%s successful\n", argv[0]); + PR_fprintf(output, "\t\tsum = 0x%x, expected = 0x%x\n", sum, + SUM_OF_NUMBERS(thread_cnt * data_cnt)); + return 0; + } else { + PR_fprintf(output, "%s failed: sum = 0x%x, expected = 0x%x\n", + argv[0], sum, + SUM_OF_NUMBERS(data_cnt * thread_cnt)); + return 2; + } +} + +static void stackop(void *thread_arg) +{ + PRInt32 val, cnt, index, loops; + DataRecord *Items, *Item; + PRStack *list1, *list2; + PRStackElem *node; + stack_data *arg = (stack_data *) thread_arg; + + val = arg->initial_data_value; + cnt = arg->data_cnt; + loops = arg->loops; + list1 = arg->list1; + list2 = arg->list2; + + /* + * allocate memory for the data records + */ + Items = (DataRecord *) PR_CALLOC(sizeof(DataRecord) * cnt); + PR_ASSERT(Items != NULL); + index = 0; + + if (_debug_on) + PR_fprintf(output, + "Thread[0x%x] init_val = %d cnt = %d data1 = 0x%x datan = 0x%x\n", + PR_GetCurrentThread(), val, cnt, &Items[0], &Items[cnt-1]); + + + /* + * add the data records to list1 + */ + while (cnt-- > 0) { + Items[index].data = val++; + PR_StackPush(list1, &Items[index].link); + index++; + } + + /* + * pop data records from list1 and add them back to list1 + * generates contention for the stack accesses + */ + while (loops-- > 0) { + cnt = arg->data_cnt; + while (cnt-- > 0) { + node = PR_StackPop(list1); + if (node == NULL) { + PR_fprintf(errhandle, "Error - PR_StackPop returned NULL\n"); + PR_ASSERT(node != NULL); + PR_ProcessExit(3); + } + PR_StackPush(list1, node); + } + } + /* + * remove the data records from list1 and add them to list2 + */ + cnt = arg->data_cnt; + while (cnt-- > 0) { + node = PR_StackPop(list1); + if (node == NULL) { + PR_fprintf(errhandle, "Error - PR_StackPop returned NULL\n"); + PR_ASSERT(node != NULL); + PR_ProcessExit(3); + } + PR_StackPush(list2, node); + } + if (_debug_on) + PR_fprintf(output, + "Thread[0x%x] init_val = %d cnt = %d exiting\n", + PR_GetCurrentThread(), val, cnt); + +} + -- cgit v1.2.3