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authorEric Andersen <andersen@codepoet.org>2002-08-24 21:23:58 +0000
committerEric Andersen <andersen@codepoet.org>2002-08-24 21:23:58 +0000
commite44c028c15f596875449eed8885824add58e6865 (patch)
treee632ced907988152f41e0a8b75e4a0bb308eba61 /test/misc/sem.c
parent20dd264683eb83c0a3b701fa10137372ca71c066 (diff)
Simple shared memory test
Diffstat (limited to 'test/misc/sem.c')
-rw-r--r--test/misc/sem.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/test/misc/sem.c b/test/misc/sem.c
new file mode 100644
index 000000000..7606fd180
--- /dev/null
+++ b/test/misc/sem.c
@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+
+int main(void)
+{
+ int k, r;
+ union semun {
+ int val;
+ struct semid_ds *buf;
+ unsigned short int *array;
+ struct seminfo *__buf;
+ } sd;
+ struct semid_ds sd_buf;
+
+ k = semget(IPC_PRIVATE, 10, IPC_CREAT | 0666 );
+ printf("%d\n", k);
+
+ if (k < 0) {
+ printf("semget failed: %m\n");
+ return 1;
+ }
+
+ sd.buf = &sd_buf;
+ r = semctl(k, 0, IPC_STAT, sd);
+ printf("%d\n", r);
+
+ if (r < 0) {
+ printf("semctl IPC_STAT failed: %m\n");
+ return 1;
+ }
+
+ printf("sem_nsems = %lu\n", sd_buf.sem_nsems);
+ if (sd_buf.sem_nsems != 10) {
+ printf("failed: incorrect sem_nsems!\n");
+ return 1;
+ }
+
+ printf("succeeded\n");
+
+ return 0;
+}