From 88e3fbcb5d6829f8980d6bb356b1c0cd7a38187b Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Sun, 3 Jul 2005 04:40:34 +0000
Subject: linuxthreads, linuxthreads_db: Directories removed (preserved in
 ports repository).

---
 linuxthreads/Examples/ex5.c | 114 --------------------------------------------
 1 file changed, 114 deletions(-)
 delete mode 100644 linuxthreads/Examples/ex5.c

(limited to 'linuxthreads/Examples/ex5.c')

diff --git a/linuxthreads/Examples/ex5.c b/linuxthreads/Examples/ex5.c
deleted file mode 100644
index d39d487603..0000000000
--- a/linuxthreads/Examples/ex5.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/* The classic producer-consumer example, implemented with semaphores.
-   All integers between 0 and 9999 should be printed exactly twice,
-   once to the right of the arrow and once to the left. */
-
-#include <stdio.h>
-#include "pthread.h"
-#include "semaphore.h"
-
-#define BUFFER_SIZE 16
-
-/* Circular buffer of integers. */
-
-struct prodcons
-{
-  int buffer[BUFFER_SIZE];	/* the actual data */
-  int readpos, writepos;	/* positions for reading and writing */
-  sem_t sem_read;		/* number of elements available for reading */
-  sem_t sem_write;		/* number of locations available for writing */
-};
-
-/* Initialize a buffer */
-
-static void
-init (struct prodcons *b)
-{
-  sem_init (&b->sem_write, 0, BUFFER_SIZE - 1);
-  sem_init (&b->sem_read, 0, 0);
-  b->readpos = 0;
-  b->writepos = 0;
-}
-
-/* Store an integer in the buffer */
-
-static void
-put (struct prodcons *b, int data)
-{
-  /* Wait until buffer is not full */
-  sem_wait (&b->sem_write);
-  /* Write the data and advance write pointer */
-  b->buffer[b->writepos] = data;
-  b->writepos++;
-  if (b->writepos >= BUFFER_SIZE)
-    b->writepos = 0;
-  /* Signal that the buffer contains one more element for reading */
-  sem_post (&b->sem_read);
-}
-
-/* Read and remove an integer from the buffer */
-
-static int
-get (struct prodcons *b)
-{
-  int data;
-  /* Wait until buffer is not empty */
-  sem_wait (&b->sem_read);
-  /* Read the data and advance read pointer */
-  data = b->buffer[b->readpos];
-  b->readpos++;
-  if (b->readpos >= BUFFER_SIZE)
-    b->readpos = 0;
-  /* Signal that the buffer has now one more location for writing */
-  sem_post (&b->sem_write);
-  return data;
-}
-
-/* A test program: one thread inserts integers from 1 to 10000,
-   the other reads them and prints them. */
-
-#define OVER (-1)
-
-struct prodcons buffer;
-
-static void *
-producer (void *data)
-{
-  int n;
-  for (n = 0; n < 10000; n++)
-    {
-      printf ("%d --->\n", n);
-      put (&buffer, n);
-    }
-  put (&buffer, OVER);
-  return NULL;
-}
-
-static void *
-consumer (void *data)
-{
-  int d;
-  while (1)
-    {
-      d = get (&buffer);
-      if (d == OVER)
-	break;
-      printf ("---> %d\n", d);
-    }
-  return NULL;
-}
-
-int
-main (void)
-{
-  pthread_t th_a, th_b;
-  void *retval;
-
-  init (&buffer);
-  /* Create the threads */
-  pthread_create (&th_a, NULL, producer, 0);
-  pthread_create (&th_b, NULL, consumer, 0);
-  /* Wait until producer and consumer finish. */
-  pthread_join (th_a, &retval);
-  pthread_join (th_b, &retval);
-  return 0;
-}
-- 
cgit 1.4.1