ch4-create1

Chapter_4

create2

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create1.c     ALP, p. 64

#include <stdio.h> // fputc(), stderr(), NULL
#include <pthread.h> // for pthread_t, pthread_create()
#include <unistd.h> // for sleep()

void * print_xs (void * unused) // The parameter is unused
{
while(1) // for ever
{
fputc ('x', stderr); // print x's to stderr
sleep(1); // pause for 1 second
}

return NULL; // Does not return
}

int main()
{
pthread_t thread_id;
/* Create a new thread. The new thread will run the print_xs
function. */
pthread_create (&thread_id, NULL, &print_xs, NULL);

while(1) /* Print o's continuously to stderr */
{
fputc ('o', stderr);
sleep(1); // pause for 1 second
}

return 0;
}

/*
gcc create1.c -o create1 -lpthread
./create1
oxoxoxoxoxxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxoxooxoxox^C
// ended with Ctrl^C
*/

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Chapter_4

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create2