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-rw-r--r--sync/writer.c76
1 files changed, 0 insertions, 76 deletions
diff --git a/sync/writer.c b/sync/writer.c
deleted file mode 100644
index d38dd70..0000000
--- a/sync/writer.c
+++ /dev/null
@@ -1,76 +0,0 @@
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/ipc.h>
-#include <sys/select.h>
-#include <sys/sem.h>
-#include <sys/shm.h>
-#include <sys/types.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#define NSEM 3
-
-char *mem;
-
-void quit(signum)
-int signum;
-{
- shmdt(mem);
- exit(1);
-}
-
-int main(argc, argv)
-int argc;
-char **argv;
-{
- int shmid, semid, i, pid, id;
- char *mem;
- struct sembuf sb;
-
- if (argc < 2) {
- printf("usage: writer [id]\n");
- exit(1);
- }
-
- id = atoi(argv[1]);
-
-
- if ((shmid = shmget(52, 1<<14, IPC_CREAT | 0666)) == -1){
- perror("shmget: shmget failed");
- exit(1);
- }
-
- if ((mem = shmat(shmid, NULL, 0)) == (char *) -1) {
- perror("shmat");
- exit(1);
- }
-printf("Wshmid: %x\n", shmid);
-
- if ((semid = semget(shmid, NSEM, 0)) == -1) {
- perror("Wsemget: ");
- exit(1);
- }
-
- signal(SIGQUIT, quit);
-
- srand(time(NULL));
-
- while (1) {
- rand() % id;
-
- sb.sem_num = 0; sb.sem_op = -1; sb.sem_flg = 0;
- semop(semid, &sb, 1);
-
- for (i = 0; i < 1<<14; i++) {
- mem[i]= 0x30 + id;
- }
-
- sb.sem_op = 1;
- semop(semid, &sb, 1);
-
- sleep(rand() % ((id * 2) + 1));
- }
-}