Hi Subrata,
in the LTP 20070531 a part of my previous shmat1 patch has been missed.
The attached patch to fix the usage of shmget/shmat, where the id
(returned by shmget),
has to be used for all shm operations.
The patch is against LTP 20070531.
Best regards,
Carmelo
--- ./ltp-full-20070531/testcases/kernel/mem/mtest06/shmat1.c 2007-05-31
13:50:55.363666000 +0200
+++ ./ltp-full-20070531-st/testcases/kernel/mem/mtest06/shmat1.c
2007-05-31 13:52:14.044033000 +0200
@@ -86,10 +86,12 @@
#define FALSE 0
#endif
#define prtln() printf(" I AM HERE ==> %s %d\n", __FILE__, __LINE__);
+
#define STR_SHMAT " "
#define STR_WRITER " "
#define STR_READER " "
+
/* Global Variables */
void *map_address; /* pointer to file in memory */
sigjmp_buf jmpbuf; /* argument to setjmp and longjmp */
@@ -264,11 +266,10 @@ void *
shmat_shmdt(void *args) /* arguments to the thread X function.
*/
{
int shm_ndx = 0; /* index to number of shmat/shmdt */
- key_t shmkey = 0; /* shared memory id */
+ key_t shmkey = 0; /* IPC_PRIVATE (key for shmget) */
+ int shmid; /* shared memory id */
long *locargs = /* local pointer to arguments */
(long *)args;
- struct shmid_ds *shmbuf /* info about the segment pointed to by
shmkey*/
- = NULL;
while (shm_ndx++ < (int)locargs[0])
{
@@ -279,7 +280,7 @@ shmat_shmdt(void *args) /* arguments to
srand(time(NULL)%100);
fsize = (1 + (int)(1000.0*rand()/(RAND_MAX+1.0))) * 4096;
- if (shmget(shmkey, fsize, IPC_CREAT | 0666 ) == -1)
+ if ((shmid = shmget(shmkey, fsize, IPC_CREAT | 0666)) == -1)
{
perror("shmat_shmdt(): shmget()");
pthread_exit((void *)-1);
@@ -291,7 +292,7 @@ shmat_shmdt(void *args) /* arguments to
STR_SHMAT, pthread_self(), fsize);
}
- if ((map_address = shmat(shmkey, (void *)0, SHMLBA))
+ if ((map_address = shmat(shmid, (void *)0, 0))
== (void *)-1)
{
fprintf(stderr, "shmat_shmat(): map address = %p\n",
@@ -325,7 +326,7 @@ shmat_shmdt(void *args) /* arguments to
perror("shmat_shmdt(): shmdt()");
pthread_exit((void *)-1);
}
- if (shmctl(shmkey, IPC_RMID, shmbuf))
+ if (shmctl(shmid, IPC_RMID, NULL))
{
perror("shmat_shmdt(): shmctl()");
pthread_exit((void *)-1);
-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
Ltp-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ltp-list
