1 /*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 // utils for multi-thread and multi-process test
17
18 #include "mt_utils.h"
19 #include <pthread.h>
20 #include <unistd.h>
21 #include <stdlib.h>
22 #include <errno.h>
23 #include <sys/types.h>
24 #include <sys/shm.h>
25 #include "log.h"
26
27 #define MAX_INDEX 12
28 const uint32_t MSECOND_INDEX[MAX_INDEX] = {10, 20, 30, 60, 100, 150, 200, 300, 400, 600, 1000, 2000};
29 const uint32_t NUMBER_INDEX[MAX_INDEX] = {2500, 3600, 4500, 6600, 8800, 1000, 12000, 15000, 18000, 2000, 3000, 42000 };
30
31 int g_shmidCheckStep = 0;
CheckStep(int value)32 uint64_t CheckStep(int value)
33 {
34 if (value == 1) {
35 shmctl(g_shmidCheckStep, IPC_RMID, nullptr);
36 g_shmidCheckStep = shmget(IPC_PRIVATE, 1024, 0666 | IPC_CREAT);
37 }
38 if (g_shmidCheckStep != -1) {
39
40 uint64_t *shared = (uint64_t *)shmat(g_shmidCheckStep, nullptr, 0);
41
42 if (value == 1) {
43 *shared = 1;
44 } else {
45 *shared = (*shared << 4) + value;
46 }
47 uint64_t state = *shared;
48 shmdt(shared);
49 return state;
50 }
51 return 0;
52 }
53
CountPrimes(uint32_t maxNumber)54 int CountPrimes(uint32_t maxNumber)
55 {
56 uint32_t primesCount = 0;
57 uint32_t i, num;
58 for (num = 2; num <= maxNumber; ++num) {
59 for (i = 2; i <= num; i++) {
60 if (num % i == 0) {
61 break;
62 }
63 }
64 if (i == num) {
65 primesCount++;
66 }
67 }
68 return primesCount;
69 }
70
GetNumberFromMS(uint32_t ms)71 static uint32_t GetNumberFromMS(uint32_t ms)
72 {
73 for (uint32_t i = 0; i < MAX_INDEX; i++) {
74 if (MSECOND_INDEX[i] == ms) {
75 return NUMBER_INDEX[i];
76 }
77 }
78 return 0;
79 }
80
BusyRun(uint32_t ms)81 int BusyRun(uint32_t ms)
82 {
83 uint32_t n = GetNumberFromMS(ms);
84 if (n == 0) {
85 LOG("BusyRun Error: %d ms not support", n);
86 _exit(1);
87 }
88 return CountPrimes(n);
89 }
90
91 // pipe for sync in ipc
92 static int g_pipeFd[2];
InitPipe()93 int InitPipe()
94 {
95 return pipe(g_pipeFd);
96 }
UnBlockPipe()97 void UnBlockPipe()
98 {
99 close(g_pipeFd[0]);
100 close(g_pipeFd[1]);
101 }
BlockOnPipe()102 void BlockOnPipe()
103 {
104 close(g_pipeFd[1]);
105 char buffer[2];
106 LOGD("before pipe read");
107 read(g_pipeFd[0], buffer, 1); // will block until close(fd[1]) in another port
108 LOGD("after pipe read");
109 close(g_pipeFd[0]);
110 }
111
112 // shm for process
113 int g_shmidGlobal;
InitGlobalVariable(void)114 int InitGlobalVariable(void)
115 {
116 g_shmidGlobal = shmget(IPC_PRIVATE, 1024, 0666 | IPC_CREAT);
117 if (g_shmidGlobal == -1) {
118 LOG("> shmget errno = %d", errno);
119 return -1;
120 }
121 return 0;
122 }
123
SetGlobalVariable(int value)124 int SetGlobalVariable(int value)
125 {
126 int *shared = (int *)shmat(g_shmidGlobal, nullptr, 0);
127 if (shared == (int *)(-1)) {
128 LOG("> shmat errno = %d", errno);
129 return -1;
130 }
131 *shared = value;
132 if ((shmdt(shared)) == -1) {
133 LOG("> shmdt errno = %d", errno);
134 return -1;
135 }
136 return 0;
137 }
138
GetGlobalVariable(void)139 int GetGlobalVariable(void)
140 {
141 int re;
142 int *shared = (int *)shmat(g_shmidGlobal, nullptr, 0);
143 if (shared == (int*)(-1)) {
144 LOG("> shmat errno = %d", errno);
145 return -1;
146 }
147 re = *shared;
148 if ((shmdt(shared)) == -1) {
149 LOG("> shmdt errno = %d", errno);
150 return -1;
151 }
152 return re;
153 }
154
DeleteGlobalVariable(void)155 int DeleteGlobalVariable(void)
156 {
157 if (shmctl(g_shmidGlobal, IPC_RMID, nullptr) == -1) {
158 LOG("> shmctl errno = %d", errno);
159 return -1;
160 }
161 return 1;
162 }
163