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annotate playground/main.c @ 1:adcfad6e86fb

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Updated naming and separated out some logic within seobeo.
author June Park <parkjune1995@gmail.com>
date Wed, 24 Sep 2025 09:11:20 -0700
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children d97ec3ded2ae
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adcfad6e86fb Updated naming and separated out some logic within seobeo.
June Park <parkjune1995@gmail.com>
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1 #include <pthread.h>
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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2 #include <stdio.h>
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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3 #include <stdlib.h>
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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4 #define NUM_THREADS 5
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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5
adcfad6e86fb Updated naming and separated out some logic within seobeo.
June Park <parkjune1995@gmail.com>
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6 void *PrintHello(void *threadid)
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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7 {
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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8 long tid;
adcfad6e86fb Updated naming and separated out some logic within seobeo.
June Park <parkjune1995@gmail.com>
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9 tid = (long)threadid;
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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10 printf("Hello World! It's me, thread #%ld!\n", tid);
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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11 pthread_exit(NULL);
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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12 }
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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13
adcfad6e86fb Updated naming and separated out some logic within seobeo.
June Park <parkjune1995@gmail.com>
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14 int main (int argc, char *argv[])
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15 {
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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16 pthread_t threads[NUM_THREADS];
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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17 int rc;
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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18 long t;
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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19 for(t = 0; t < NUM_THREADS; t++)
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20 {
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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21 printf("In main: creating thread %ld\n", t);
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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22 rc = pthread_create(&threads[t], NULL, PrintHello, (void *)t);
adcfad6e86fb Updated naming and separated out some logic within seobeo.
June Park <parkjune1995@gmail.com>
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23 if (rc)
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24 {
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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25 printf("ERROR; return code from pthread_create() is %d\n", rc);
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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26 exit(-1);
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27 }
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28 }
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29
adcfad6e86fb Updated naming and separated out some logic within seobeo.
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30 /* Last thing that main() should do */
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31 pthread_exit(NULL);
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32 }