void * producer_proc(void *arg)
{
struct ringbuffer *ring_buf = (struct ringbuffer *)arg;
char i;
i = 0;
while(1)
{
printf("******************************************\n");
printf("put datas to ring buffer.\n");
if (ringbuffer_is_full(ring_buf)) {
printf("buffer is full !\n");
sleep(1);
continue;
}
ringbuffer_put(ring_buf, &i, sizeof(i));
i++;
printf("ring buffer length: %u\n", ringbuffer_len(ring_buf));
printf("******************************************\n");
sleep(1);
}
}
int ringbuffer_put(RINGBUFFER_T *buffer, char character) {
//is there space in the buffer?
int bufferMask = (buffer->size - 1);
if ( ((buffer->write_pos + 1) & bufferMask) != (buffer->read_pos & bufferMask)) {
//wrap around write position
buffer->write_pos &= bufferMask;
//write the character
buffer->memory[buffer->write_pos++] = character;
//update size info
return ringbuffer_len(buffer);
} else {
return BUFFER_OVERFLOW;
}
}
void * consumer_proc(void *arg)
{
unsigned int cnt;
struct ringbuffer *ring_buf = (struct ringbuffer *)arg;
cnt = 0;
while(1)
{
sleep(2);
printf("------------------------------------------\n");
printf("get data from ring buffer.\n");
{
char i;
if (ringbuffer_is_empty(ring_buf)) {
printf("buffer is empty !\n");
sleep(1);
continue;
}
if (cnt !=0 && !(cnt % 16))
printf("\n");
ringbuffer_get(ring_buf, &i, sizeof(i));
printf("data is: %d \n", i);
cnt++;
}
printf("ring buffer length: %u\n", ringbuffer_len(ring_buf));
printf("------------------------------------------\n");
}
}
int getchar()
{
while(!ringbuffer_len(&ringbuffer)) _NOP();
return ringbuffer_get(&ringbuffer);
}
