kagenzaclaudiengmailcom • 2020-10-27 19:19:59

 

method consume(food)

If shopLock is locked, then WAIT

Lock (shopLock)

Assign (consume - food) to shop

UnLock (shopLock)

end consume
method storage(food)

If storageLock is locked, then WAIT

Lock (storageLock)

ASSIGN (storage - food) to storage

Unlock (storageLock)

end storage PostVer 0

2470994471qqcom • 2020-10-31 10:49:15

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/10/屏幕截图-2020-10-31-115023.png"><img class="alignnone size-medium wp-image-8725" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/10/屏幕截图-2020-10-31-115023-281x300.png" alt="" width="281" height="300" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/10/屏幕截图-2020-10-31-113818.png"><img class="alignnone size-medium wp-image-8724" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/10/屏幕截图-2020-10-31-113818-300x199.png" alt="" width="300" height="199" /></a> PostVer 0

hokyeejaufoxmailcom • 2020-11-01 13:53:32

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/oneline_exe3.py_-1.zip">oneline_exe3.py</a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/截屏2020-11-01下午12.26.36.png"><img class="alignnone size-medium wp-image-8728" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/截屏2020-11-01下午12.26.36-300x193.png" alt="" width="300" height="193" /></a> PostVer 0

1730854984qqcom • 2020-11-01 18:29:01

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/1.jpg"><img class="alignnone size-medium wp-image-8735" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/1-300x108.jpg" alt="" width="300" height="108" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/2.jpg"><img class="alignnone size-medium wp-image-8736" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/2-300x166.jpg" alt="" width="300" height="166" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/3.jpg"><img class="alignnone size-medium wp-image-8737" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/3-300x92.jpg" alt="" width="300" height="92" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/4.jpg"><img class="alignnone size-medium wp-image-8738" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/4-300x112.jpg" alt="" width="300" height="112" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/5.jpg"><img class="alignnone size-medium wp-image-8739" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/5-300x138.jpg" alt="" width="300" height="138" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/6.jpg"><img class="alignnone size-medium wp-image-8740" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/6-300x119.jpg" alt="" width="300" height="119" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/result.jpg"><img class="alignnone size-medium wp-image-8741" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/result-300x165.jpg" alt="" width="300" height="165" /></a>

<span class="tgt" data-section="0" data-sentence="0" data-group="0-0">When there is only one item left, two customers want to pick it up.</span><span class="tgt" data-section="0" data-sentence="1" data-group="0-1">When the first customer gets it, he receives the end message.</span><span class="tgt" data-section="0" data-sentence="2" data-group="0-2">The second customer will also receive a closing message.</span> PostVer 0

1210775967qqcom • 2020-11-02 21:30:22

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/OE3.jpg"><img class="alignnone size-medium wp-image-8742" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/OE3-300x265.jpg" alt="" width="300" height="265" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/OE3-1.jpg"><img class="alignnone size-medium wp-image-8743" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/OE3-1-300x168.jpg" alt="" width="300" height="168" /></a> PostVer 0

1285795916qqcom • 2020-11-02 22:13:27

<p class="p1"><span class="s1">邱锐鹏</span> 2018329621199</p>
<p class="p1"><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/classexe3.png"><img class="alignnone size-medium wp-image-8746" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/classexe3-300x138.png" alt="" width="300" height="138" /></a></p> PostVer 0

1720650158qqcom • 2020-11-02 22:44:35

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f1.jpg"><img class="alignnone size-medium wp-image-8747" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f1-300x107.jpg" alt="" width="300" height="107" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f2.jpg"><img class="alignnone size-medium wp-image-8748" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f2-300x109.jpg" alt="" width="300" height="109" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f3.jpg"><img class="alignnone size-medium wp-image-8749" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f3-300x152.jpg" alt="" width="300" height="152" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f4.jpg"><img class="alignnone size-medium wp-image-8750" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/f4-300x118.jpg" alt="" width="300" height="118" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/RE.jpg"><img class="alignnone size-medium wp-image-8751" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/RE-300x131.jpg" alt="" width="300" height="131" /></a> PostVer 0

653968106qqcom • 2020-11-02 23:02:03

徐天然2018329621008

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获3-1.jpg"><img class="alignnone size-medium wp-image-8755" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获3-1-300x236.jpg" alt="" width="300" height="236" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获2-1.jpg"><img class="alignnone size-medium wp-image-8754" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获2-1-300x226.jpg" alt="" width="300" height="226" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获1-1.jpg"><img class="alignnone size-medium wp-image-8753" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获1-1-300x253.jpg" alt="" width="300" height="253" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获.jpg"><img class="alignnone size-medium wp-image-8752" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/捕获-193x300.jpg" alt="" width="193" height="300" /></a> PostVer 0

454234624qqcom • 2020-11-03 00:30:41

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_01.jpg"><img class="alignnone size-medium wp-image-8756" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_01-300x88.jpg" alt="" width="300" height="88" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_02.jpg"><img class="alignnone size-medium wp-image-8757" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_02-300x124.jpg" alt="" width="300" height="124" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_03.jpg"><img class="alignnone size-medium wp-image-8758" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_03-300x151.jpg" alt="" width="300" height="151" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_04.jpg"><img class="alignnone size-medium wp-image-8759" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_04-300x154.jpg" alt="" width="300" height="154" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_05.jpg"><img class="alignnone size-medium wp-image-8760" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/Online_Test03_05-300x129.jpg" alt="" width="300" height="129" /></a> PostVer 0

804824950qqcom • 2020-11-03 15:11:13

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/QQ20201103-151232@2x.png"><img class="alignnone size-medium wp-image-8769" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/QQ20201103-151232@2x-300x256.png" alt="" width="300" height="256" /></a> PostVer 0

cfeshete97gmailcom • 2020-11-04 00:26:23

Name: FESHETE CHARLES DE-GAULLE       2018529627022

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/4.png"><img class="alignnone size-medium wp-image-8777" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/4-262x300.png" alt="" width="262" height="300" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/5.png"><img class="alignnone size-medium wp-image-8778" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/5-252x300.png" alt="" width="252" height="300" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/6.png"><img class="alignnone size-medium wp-image-8779" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/6-300x289.png" alt="" width="300" height="289" /></a><a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/7.png"><img class="alignnone size-medium wp-image-8780" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/7-275x300.png" alt="" width="275" height="300" /></a> PostVer 0

yeqirunoutlookcom • 2020-11-04 14:59:44

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/AQ0FEFN2DQDXA249RUJQ.png"><img class="alignnone size-medium wp-image-8789" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/AQ0FEFN2DQDXA249RUJQ-158x300.png" alt="" width="158" height="300" /></a> PostVer 0

512858048qqcom • 2020-11-09 11:39:36

Producers and consumers have mutually exclusive access to the buffer zone. At the same time, producers and consumers have a cooperative relationship. Consumers can consume only after the producer produces. They are also in a synchronous relationship. The semaphore mutex is used as a mutually exclusive semaphore, which is used to control mutually exclusive access to the buffer pool. The initial value of the mutually exclusive semaphore is 1; the semaphore full is used to record the number of "full" buffers in the current buffer pool, and the initial value is 0. The semaphore empty is used to record the number of "empty" buffers in the current buffer pool. The initial value is n.

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/1-1.png"><img class="alignnone size-medium wp-image-8847" src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/1-1-300x300.png" alt="" width="300" height="300" /></a>

&nbsp; PostVer 0

450766287qqcom • 2020-11-17 15:20:36

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/use.png"><img src="http://www.yvsou.com/wp-content/uploads/sites/30/2020/11/use.png" alt="" width="356" height="549" class="alignnone size-full wp-image-8931" /></a> PostVer 0

1756894282qqcom • 2020-12-28 11:04:36

#include <iostream>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
using namespace std;

int current = 0; // producer运行加1，consumer运行减1
int buf[10];
int in = 0, out = 0;
int items = 0, spaces = 10;
bool flag; // 标记线程结束运行
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t notfull = PTHREAD_COND_INITIALIZER; // 缓冲区不满
pthread_cond_t notempty = PTHREAD_COND_INITIALIZER; // 缓冲区不空

void *producer( void *arg ) {
while( flag ) {
pthread_mutex_lock( &mutex ); // 为保证条件变量不会因为多线程混乱，所以先加锁
while( !spaces ) { // 避免“惊群”效应，避免因其他线程实现得到事件而导致该线程“假醒”
pthread_cond_wait( &notfull, &mutex );
}
buf[in] = current++;
in = ( in + 1 ) % 10;
items++;
spaces--;

printf( "producer %zu , current = %d
", pthread_self(), current );
for( int i = 0; i < 10; i++ ) {
printf( "%-4d", buf[i] );
}
printf( "

" );

pthread_cond_signal( &notempty );
pthread_mutex_unlock( &mutex );
}
pthread_exit( NULL );
}

void *consumer( void *arg ) {
while( flag ) {
pthread_mutex_lock( &mutex );
while( !items ) {
pthread_cond_wait( &notempty, &mutex );
}
buf[out] = -1;
out = ( out + 1 ) % 10;
current--;
items--;
spaces++;

printf( "consumer %zu , current = %d
", pthread_self(), current );
for( int i = 0; i < 10; i++ ) {
printf( "%-4d", buf[i] );
}
printf( "

" );

pthread_cond_signal( &notfull );
pthread_mutex_unlock( &mutex );
}
pthread_exit( NULL );
}

int main() {
memset( buf, -1, sizeof(buf) );
flag = true;
pthread_t pro[10], con[10];
int i = 0;

for( int i = 0; i < 10; i++ ) {
pthread_create( &pro[i], NULL, producer, NULL );
pthread_create( &con[i], NULL, consumer, NULL );
}

sleep(1); // 让线程运行一秒
flag = false;

for( int i = 0; i < 10; i++ ) {
pthread_join( pro[i], NULL );
pthread_join( con[i], NULL );
}

return 0;
} PostVer 0

439731491qqcom • 2021-01-05 16:49:34

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/1-2.png"><img class="size-medium wp-image-9294 aligncenter" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/1-2-300x213.png" alt="" width="300" height="213" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/2-2.png"><img class="size-medium wp-image-9295 aligncenter" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/2-2-300x149.png" alt="" width="300" height="149" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/3.png"><img class="size-medium wp-image-9296 aligncenter" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/3-300x160.png" alt="" width="300" height="160" /></a> <a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/捕获-2.png"><img class="size-medium wp-image-9297 aligncenter" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/捕获-2-300x213.png" alt="" width="300" height="213" /></a> PostVer 0

chipusilesgmailcom • 2021-01-05 18:48:20

#include&lt;stdio.h&gt;
#include&lt;stdlib.h&gt;

int mutex=1,full=0,empty=3,x=0;

int main()
{
int n;
void producer();
void consumer();
int wait(int);
int signal(int);
printf("
1.Producer
2.Consumer
3.Exit");
while(1)
{
printf("
Enter your choice:");
scanf("%d",&amp;n);
switch(n)
{
case 1:    if((mutex==1)&amp;&amp;(empty!=0))
producer();
else
printf("Buffer is full!!");
break;
case 2:    if((mutex==1)&amp;&amp;(full!=0))
consumer();
else
printf("Buffer is empty!!");
break;
case 3:
exit(0);
break;
}
}

return 0;
}

int wait(int s)
{
return (--s);
}

int signal(int s)
{
return(++s);
}

void producer()
{
mutex=wait(mutex);
full=signal(full);
empty=wait(empty);
x++;
printf("
Producer produces the item %d",x);
mutex=signal(mutex);
}

void consumer()
{
mutex=wait(mutex);
full=wait(full);
empty=signal(empty);
printf("
Consumer consumes item %d",x);
x--;
mutex=signal(mutex);
} PostVer 0

1403861656qqcom • 2021-01-06 17:11:18

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/操作系统作业.png"><img class="alignnone size-medium wp-image-9306" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/操作系统作业-229x300.png" alt="" width="229" height="300" /></a> PostVer 0

1119833189qqcom • 2021-01-06 22:07:02

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/6CHN86SLEM2OUMGX8XFBX.png"><img class="alignnone size-medium wp-image-9308" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/6CHN86SLEM2OUMGX8XFBX-279x300.png" alt="" width="279" height="300" /></a> PostVer 0

1224532347qqcom • 2021-01-07 13:30:06

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/银行家.png"><img class="alignnone size-medium wp-image-9310" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/银行家-300x170.png" alt="" width="300" height="170" /></a> PostVer 0

1224532347qqcom • 2021-01-07 13:30:06

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/银行家.png"><img class="alignnone size-medium wp-image-9310" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/银行家-300x170.png" alt="" width="300" height="170" /></a> PostVer 0

962305148qqcom • 2021-01-07 23:33:26

<h2><strong>2018329621064_邢杰焰</strong></h2>
<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/092Q3YUDRQJ@VZPDI92M.png"><img class="alignnone size-medium wp-image-9330" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/092Q3YUDRQJ@VZPDI92M-184x300.png" alt="" width="184" height="300" /></a> PostVer 0

2736689890qqcom • 2021-01-08 00:29:40

2018329621239-严宇豪

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/share3.png"><img src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/share3-260x300.png" alt="" width="260" height="300" class="alignnone size-medium wp-image-9351" /></a> PostVer 0

indigo203outlookcom • 2021-01-08 01:51:27

<a href="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/QQ截图20210108015648.jpg"><img class="alignnone size-medium wp-image-9355" src="http://www.yvsou.com/wp-content/uploads/sites/30/2021/01/QQ截图20210108015648-300x168.jpg" alt="" width="300" height="168" /></a>

https://play.rust-lang.org/?version=stable&amp;mode=debug&amp;edition=2018&amp;gist=750f44c5f8d386b16b5e21cf9385296e PostVer 0