kolibrios/programs/develop/ktcc/trunk/libc.obj/samples/pipe.c

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/*
* This is an example program for sending a message through a "pipe".
* Created by turbocat (Maxim Logaev) 2022.
*/
#include <sys/ksys.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#define TH_STACK_SIZE 1024
#define MESSAGE_SIZE 12
ksys_colors_table_t sys_colors;
int pipefd[2];
char *send_message = "HELLO PIPE!";
void tmain() {
char recv_message[MESSAGE_SIZE];
_ksys_posix_read(pipefd[0], recv_message, MESSAGE_SIZE);
printf("RECV: %s\n", recv_message);
assert(!strcmp(recv_message, send_message));
puts("Successful pipe test");
exit(0);
}
void create_thread(void){
unsigned tid; // New thread ID
void *th_stack = malloc(TH_STACK_SIZE); // Allocate memory for thread stack
if (!th_stack) {
puts("Memory allocation error for thread!");
return;
}
tid = _ksys_create_thread(tmain, th_stack+TH_STACK_SIZE); // Create new thread with entry "main"
if (tid == -1) {
puts("Unable to create a new thread!");
return;
}
printf("New thread created (TID=%u)\n", tid);
}
void main() {
if (_ksys_posix_pipe2(pipefd, 0)) {
puts("Pipe creation error!");
return;
}
printf("SEND: %s\n", send_message);
_ksys_posix_write(pipefd[1], send_message, MESSAGE_SIZE);
create_thread();
}