TXuian
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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#include "libfs.h"
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#include "libsemaphore.h"
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#include "libserial.h"
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#include "usyscall.h"
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static int global_value;
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static sem_t sem;
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static char sem_server_name[] = "SemTestServer";
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int sub_thread_entry(int argc, char** argv)
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{
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for (int i = 0; i < 100; i++) {
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global_value++;
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}
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// sub thread connect to semaphore server
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printf("Thread signal sem.\n");
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semaphore_signal(sem);
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exit(0);
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return 0;
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}
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static char sem_file_name[] = "/semaphore_server";
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int main(int argc, char** argv)
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{
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global_value = 0;
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printf("Test Create Semaphore.\n");
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printf("Create new sem.\n");
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sem = semaphore_new(0);
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printf("Create new thread.\n");
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char* task_param[2] = { "add_gval", NULL };
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int nr_thread = 0;
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for (int i = 0; i < 128; i++) {
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int tid = thread(sub_thread_entry, "add_gval", task_param);
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if (tid > 0) {
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nr_thread++;
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}
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}
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printf("Main thread waiting for sem for %d times.\n", nr_thread);
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for (int i = 0; i < nr_thread; i++) {
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int sem_wait_ret = semaphore_wait(sem);
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}
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printf("Main thread sem %d wait return, global val: %d.\n", sem, global_value);
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semaphore_free(sem);
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exit(0);
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return 0;
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} |