i dont even know

This commit is contained in:
2025-11-26 16:42:43 +07:00
parent 42bfff63e5
commit a1cf4b157d
3 changed files with 61 additions and 45 deletions

View File

@@ -5,12 +5,12 @@
#define NAME_MAXLEN 64
typedef struct {
pid_t pid; // PID пчелы
int want; // желаемая порция; 0 => STOP-маркер
char replyq[NAME_MAXLEN]; // имя очереди для ответов ("/bee_<pid>")
pid_t pid;
int want;
char replyq[NAME_MAXLEN];
} req_msg_t;
typedef struct {
int granted; // выдано меда; 0 => стоп
int remain; // остаток мёда
int granted;
int remain;
} rep_msg_t;

View File

@@ -9,7 +9,6 @@
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include "common.h"
@@ -73,7 +72,8 @@ int main(int argc, char **argv) {
}
mq_unlink(REQ_QUEUE);
struct mq_attr attr; memset(&attr, 0, sizeof(attr));
struct mq_attr attr;
memset(&attr, 0, sizeof(attr));
attr.mq_maxmsg = 10; // ваш системный максимум = 10
attr.mq_msgsize = sizeof(req_msg_t);
@@ -109,9 +109,14 @@ int main(int argc, char **argv) {
int sleep_ms = (int) ((next_eat_ns - now_ns) / 1000000LL);
if (sleep_ms < 0) sleep_ms = 0;
struct timespec deadline = { .tv_sec = now.tv_sec + sleep_ms/1000,
.tv_nsec = now.tv_nsec + (sleep_ms%1000)*1000000L };
if (deadline.tv_nsec >= 1000000000L) { deadline.tv_sec++; deadline.tv_nsec -= 1000000000L; }
struct timespec deadline = {
.tv_sec = now.tv_sec + sleep_ms / 1000,
.tv_nsec = now.tv_nsec + (sleep_ms % 1000) * 1000000L
};
if (deadline.tv_nsec >= 1000000000L) {
deadline.tv_sec++;
deadline.tv_nsec -= 1000000000L;
}
ssize_t rd = mq_timedreceive(qreq, (char *) &req, sizeof(req), NULL, &deadline);
if (rd >= 0) {

View File

@@ -25,24 +25,34 @@ int main(int argc, char **argv) {
return 2;
}
int portion = atoi(argv[1]);
if (portion <= 0) { fprintf(stderr, "portion must be >0\n"); return 2; }
if (portion <= 0) {
fprintf(stderr, "portion must be >0\n");
return 2;
}
pid_t me = getpid();
char replyq[NAME_MAXLEN];
snprintf(replyq, sizeof(replyq), "/bee_%d", (int) me);
mq_unlink(replyq);
struct mq_attr attr; memset(&attr, 0, sizeof(attr));
struct mq_attr attr;
memset(&attr, 0, sizeof(attr));
attr.mq_maxmsg = 10; // также укладываемся в лимит
attr.mq_msgsize = sizeof(rep_msg_t);
mqd_t qrep = mq_open(replyq, O_CREAT | O_RDONLY, 0666, &attr);
if (qrep == (mqd_t)-1) { perror("mq_open reply"); return 1; }
if (qrep == (mqd_t) -1) {
perror("mq_open reply");
return 1;
}
mqd_t qreq = (mqd_t) -1;
for (int i = 0; i < 50; i++) {
qreq = mq_open(REQ_QUEUE, O_WRONLY);
if (qreq != (mqd_t) -1) break;
if (errno != ENOENT) { perror("mq_open req"); break; }
if (errno != ENOENT) {
perror("mq_open req");
break;
}
msleep(100);
}
if (qreq == (mqd_t) -1) {
@@ -58,7 +68,8 @@ int main(int argc, char **argv) {
int ms = 100 + (rand_r(&seed) % 600);
msleep(ms);
req_msg_t req; memset(&req, 0, sizeof(req));
req_msg_t req;
memset(&req, 0, sizeof(req));
req.pid = me;
req.want = portion;
strncpy(req.replyq, replyq, sizeof(req.replyq) - 1);