@@ -798,9 +798,9 @@ msgctl02 msgctl02
msgctl03 msgctl03
msgctl04 msgctl04
msgctl05 msgctl05
-msgstress01 msgstress01
+msgstress01 msgstress01 -l 100000
msgstress02 msgstress02
-msgstress03 msgstress03
+msgstress03 msgstress01 -r y
msgstress04 msgstress04
msgctl12 msgctl12
@@ -3,9 +3,9 @@ msgctl02 msgctl02
msgctl03 msgctl03
msgctl04 msgctl04
msgctl05 msgctl05
-msgstress01 msgstress01
+msgstress01 msgstress01 -l 100000
msgstress02 msgstress02
-msgstress03 msgstress03
+msgstress03 msgstress01 -r y
msgstress04 msgstress04
msgctl12 msgctl12
@@ -1,4 +1,3 @@
/msgstress01
/msgstress02
-/msgstress03
/msgstress04
@@ -3,10 +3,10 @@
top_srcdir ?= ../../../../..
-LTPLIBS = ltpipc
+LTPLIBS = ltpnewipc
include $(top_srcdir)/include/mk/testcases.mk
-LDLIBS += -lltpipc
+LDLIBS += -lltpnewipc
include $(top_srcdir)/include/mk/generic_leaf_target.mk
@@ -1,25 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2002
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
* 06/30/2001 Port to Linux nsharoff@us.ibm.com
* 11/06/2002 Port to LTP dbarrera@us.ibm.com
- */
-
-/*
+ * 06/15/2020 Convert to new api xuyang2018.jy@cn.fujitsu.com
+ *
* Get and manipulate a message queue.
*/
@@ -31,101 +17,61 @@
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
-#include <values.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/ipc.h>
#include <sys/msg.h>
-#include "test.h"
-#include "ipcmsg.h"
-#include "libmsgctl.h"
+#include "tst_test.h"
+#include "libnewipc.h"
+#include "tst_safe_sysv_ipc.h"
+#include "libnewmsgctl.h"
-char *TCID = "msgstress01";
-int TST_TOTAL = 1;
-
-#ifndef CONFIG_COLDFIRE
-#define MAXNPROCS 1000000 /* This value is set to an arbitrary high limit. */
-#else
-#define MAXNPROCS 100000 /* Coldfire can't deal with 1000000 */
-#endif
+#define MAXNPROCS 1000000
#define MAXNREPS 100000
static key_t keyarray[MAXNPROCS];
static int pidarray[MAXNPROCS];
static int tid;
static int MSGMNI, nprocs, nreps;
-static int procstat;
-static int mykid;
-
-void setup(void);
-void cleanup(void);
-
-static int dotest(key_t key, int child_process);
-static void sig_handler();
-
static char *opt_nprocs;
static char *opt_nreps;
-
-static option_t options[] = {
- {"n:", NULL, &opt_nprocs},
- {"l:", NULL, &opt_nreps},
- {NULL, NULL, NULL},
+static char *opt_msgmnifile;
+static void cleanup(void);
+
+static struct tst_option options[] = {
+ {"n:", &opt_nprocs, "-n N Number of processes"},
+ {"l:", &opt_nreps, "-l N Number of iterations"},
+ {"r:", &opt_msgmnifile, "-r Y/N use actual msgmni value under procfs"},
+ {NULL, NULL, NULL}
};
-static void usage(void)
+static void dotest(key_t key, int child_process)
{
- printf(" -n Number of processes\n");
- printf(" -l Number of iterations\n");
+ int pid;
+
+ tid = SAFE_MSGGET(key, IPC_CREAT | S_IRUSR | S_IWUSR);
+
+ pid = SAFE_FORK();
+ if (pid == 0) {
+ doreader(key, tid, 1, child_process, nreps);
+ exit(0);
+ }
+
+ dowriter(key, tid, 1, child_process, nreps);
+ tst_reap_children();
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
}
-int main(int argc, char **argv)
+static void verify_msgstress(void)
{
int i, j, ok, pid;
int count, status;
- struct sigaction act;
-
- tst_parse_opts(argc, argv, options, usage);
-
- setup();
-
- nreps = MAXNREPS;
- nprocs = MSGMNI;
-
- if (opt_nreps) {
- nreps = atoi(opt_nreps);
- if (nreps > MAXNREPS) {
- tst_resm(TINFO,
- "Requested number of iterations too large, "
- "setting to Max. of %d", MAXNREPS);
- nreps = MAXNREPS;
- }
- }
-
- if (opt_nprocs) {
- nprocs = atoi(opt_nprocs);
- if (nprocs > MSGMNI) {
- tst_resm(TINFO,
- "Requested number of processes too large, "
- "setting to Max. of %d", MSGMNI);
- nprocs = MSGMNI;
- }
- }
srand(getpid());
tid = -1;
- /* Setup signal handling routine */
- memset(&act, 0, sizeof(act));
- act.sa_handler = sig_handler;
- sigemptyset(&act.sa_mask);
- sigaddset(&act.sa_mask, SIGTERM);
- if (sigaction(SIGTERM, &act, NULL) < 0) {
- tst_brkm(TFAIL, NULL, "Sigset SIGTERM failed");
- }
- /* Set up array of unique keys for use in allocating message
- * queues
- */
+ /* Set up array of unique keys for use in allocating message queues */
for (i = 0; i < nprocs; i++) {
ok = 1;
do {
@@ -146,156 +92,115 @@ int main(int argc, char **argv)
} while (ok == 0);
}
- /* Fork a number of processes, each of which will
+ /*
+ * Fork a number of processes, each of which will
* create a message queue with one reader/writer
* pair which will read and write a number (iterations)
* of random length messages with specific values.
*/
-
for (i = 0; i < nprocs; i++) {
- fflush(stdout);
- if ((pid = FORK_OR_VFORK()) < 0) {
- tst_brkm(TFAIL,
- NULL,
- "\tFork failed (may be OK if under stress)");
- }
- /* Child does this */
+ pid = SAFE_FORK();
if (pid == 0) {
- procstat = 1;
- exit(dotest(keyarray[i], i));
+ dotest(keyarray[i], i);
+ exit(0);
}
pidarray[i] = pid;
}
-
count = 0;
- while (1) {
- if ((wait(&status)) > 0) {
- if (status >> 8 != 0) {
- tst_brkm(TFAIL, NULL,
- "Child exit status = %d",
- status >> 8);
- }
- count++;
- } else {
- if (errno != EINTR) {
- break;
- }
-#ifdef DEBUG
- tst_resm(TINFO, "Signal detected during wait");
-#endif
- }
+ while (count < nprocs) {
+ SAFE_WAIT(&status);
+ if (!WIFEXITED(status))
+ tst_res(TFAIL, "child process doesn't terminate normally");
+ count++;
}
- /* Make sure proper number of children exited */
- if (count != nprocs) {
- tst_brkm(TFAIL,
- NULL,
+ if (count != nprocs)
+ tst_brk(TFAIL,
"Wrong number of children exited, Saw %d, Expected %d",
count, nprocs);
- }
-
- tst_resm(TPASS, "Test ran successfully!");
+ tst_res(TPASS, "Test ran successfully!");
cleanup();
- tst_exit();
}
-static int dotest(key_t key, int child_process)
-{
- int id, pid;
- int ret, status;
-
- sighold(SIGTERM);
- TEST(msgget(key, IPC_CREAT | S_IRUSR | S_IWUSR));
- if (TEST_RETURN < 0) {
- printf("msgget() error in child %d: %s\n",
- child_process, strerror(TEST_ERRNO));
-
- return FAIL;
- }
- tid = id = TEST_RETURN;
- sigrelse(SIGTERM);
-
- fflush(stdout);
- if ((pid = FORK_OR_VFORK()) < 0) {
- printf("\tFork failed (may be OK if under stress)\n");
- TEST(msgctl(tid, IPC_RMID, 0));
- if (TEST_RETURN < 0) {
- printf("mscgtl() error in cleanup: %s\n",
- strerror(TEST_ERRNO));
- }
- return FAIL;
- }
- /* Child does this */
- if (pid == 0)
- exit(doreader(key, id, 1, child_process, nreps));
- /* Parent does this */
- mykid = pid;
- procstat = 2;
- ret = dowriter(key, id, 1, child_process, nreps);
- wait(&status);
-
- if (ret != PASS)
- exit(FAIL);
-
- if ((!WIFEXITED(status) || (WEXITSTATUS(status) != PASS)))
- exit(FAIL);
-
- TEST(msgctl(id, IPC_RMID, 0));
- if (TEST_RETURN < 0) {
- printf("msgctl() errno %d: %s\n",
- TEST_ERRNO, strerror(TEST_ERRNO));
-
- return FAIL;
- }
- return PASS;
-}
-
-static void sig_handler(void)
-{
-}
-
-void setup(void)
+static void setup(void)
{
int nr_msgqs;
+ int threads_max;
+ int free_pids;
- tst_tmpdir();
+ SAFE_FILE_SCANF("/proc/sys/kernel/msgmni", "%d", &nr_msgqs);
+ SAFE_FILE_SCANF("/proc/sys/kernel/threads-max", "%d", &threads_max);
- tst_sig(FORK, DEF_HANDLER, cleanup);
+ nr_msgqs -= GET_USED_QUEUES();
+ if (nr_msgqs <= 0)
+ tst_brk(TCONF, "Max number of message queues already used, cannot create more.");
- TEST_PAUSE;
+ if (opt_msgmnifile)
+ MSGMNI = nr_msgqs;
+ else
+ MSGMNI = min(nr_msgqs, NR_MSGQUEUES);
- nr_msgqs = get_max_msgqueues();
- if (nr_msgqs < 0)
- cleanup();
+ if (opt_nreps) {
+ nreps = SAFE_STRTOL(opt_nreps, 1, INT_MAX);
+ nreps = min(nreps, MAXNREPS);
+ } else {
+ nreps = 10000;
+ }
- nr_msgqs -= get_used_msgqueues();
- if (nr_msgqs <= 0) {
- tst_resm(TBROK,
- "Max number of message queues already used, cannot create more.");
- cleanup();
+ if (opt_nprocs) {
+ nprocs = SAFE_STRTOL(opt_nprocs, 1, INT_MAX);
+ nprocs = min(nprocs, MAXNPROCS);
+ nprocs = min(nprocs, MSGMNI);
+ } else {
+ nprocs = MSGMNI;
}
/*
- * Since msgmni scales to the memory size, it may reach huge values
- * that are not necessary for this test.
- * That's why we define NR_MSGQUEUES as a high boundary for it.
+ * fork may fail because of EAGAIN error in the following situations:
+ * 1)Reaching the RLIMIT_NPROC soft resource limit
+ * 2)Reaching /proc/sys/kernel/threads-max limit
+ * 3)Reaching /proc/sys/kernel/pid_max limit
+ * 4)the PID limit (pids.max) imposed by the cgroup "process number" (PIDs) controller was reached
+ *
+ * According to kernel code kernel/fork.c, for thread_max it has the following
+ * calculation formula:
+ * THREAD_SIZE = PAGE_SIZE << THREAD_SIZE_ORDER
+ * max_threads = totalram_pages / (8 * THREAD_SIZE / PAGE_SIZE);
+ * The default maximum number of threads is set to a safe value: the thread
+ * structures can take up at most one eighth of the memory.
+ * the pid limit is equal to max_threads/2.
+ * For example(on x86_64), 4G memory, page_size is 4k,THREAD_SIZE_ORDER is 1
+ * max_threads = 2^32/(8 * 8 * 1024) = 65536
+ * RLIMIT_NPROC = 32768 // 0.5
+ *
+ * Also, pids cgroup and systemd also has this limit. On old systemd version,
+ * ths limit is 0.8 *thread_num. On newer systemd version, the limit is 0.33 *
+ * thread_num. In here, we use 0.3.
*/
- MSGMNI = min(nr_msgqs, NR_MSGQUEUES);
+ nprocs = min(nprocs, 0.3 * threads_max);
+ free_pids = tst_get_free_pids();
+ if (free_pids < 0)
+ tst_brk(TBROK, "Can't obtain free_pid count");
+ if (!free_pids)
+ tst_brk(TBROK, "No free pids");
+
+ nprocs = min(nprocs, free_pids * 0.8);
+
+ SAFE_SIGNAL(SIGTERM, SIG_IGN);
+ tst_res(TINFO, "Number of message queues is %d, process is %d, iterations is %d", MSGMNI, nprocs, nreps);
}
void cleanup(void)
{
- int status;
-
-#ifdef DEBUG
- tst_resm(TINFO, "Removing the message queue");
-#endif
- (void)msgctl(tid, IPC_RMID, NULL);
- if ((status = msgctl(tid, IPC_STAT, NULL)) != -1) {
- (void)msgctl(tid, IPC_RMID, NULL);
- tst_resm(TFAIL, "msgctl(tid, IPC_RMID) failed");
-
- }
-
- tst_rmdir();
+ if (tid >= 0)
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
}
+
+static struct tst_test test = {
+ .needs_tmpdir = 1,
+ .options = options,
+ .setup = setup,
+ .cleanup = cleanup,
+ .forks_child = 1,
+ .test_all = verify_msgstress,
+};
@@ -1,31 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2002
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
* 06/30/2001 Port to Linux nsharoff@us.ibm.com
* 11/11/2002 Port to LTP dbarrera@us.ibm.com
- */
-
-/*
+ * 06/15/2020 Convert to new api xuyang2018.jy@cn.fujitsu.com
+ *
* Get and manipulate a message queue.
*/
-
#define _XOPEN_SOURCE 500
#include <sys/stat.h>
-#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/wait.h>
@@ -35,19 +19,13 @@
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
-#include "test.h"
-#include "ipcmsg.h"
-#include "libmsgctl.h"
-
-char *TCID = "msgstress02";
-int TST_TOTAL = 1;
+#include "tst_test.h"
+#include "libnewipc.h"
+#include "tst_safe_sysv_ipc.h"
+#include "libnewmsgctl.h"
#define MAXNREPS 1000
-#ifndef CONFIG_COLDFIRE
-#define MAXNPROCS 1000000 /* This value is set to an arbitrary high limit. */
-#else
-#define MAXNPROCS 100000 /* Coldfire can't deal with 1000000 */
-#endif
+#define MAXNPROCS 1000000
#define MAXNKIDS 10
static key_t keyarray[MAXNPROCS];
@@ -58,157 +36,19 @@ static int tid;
static int nprocs, nreps, nkids, MSGMNI;
static int procstat;
-void setup(void);
-void cleanup(void);
-
-static void term(int);
-static int dotest(key_t, int);
-static void cleanup_msgqueue(int i, int tid);
+static void cleanup(void);
static char *opt_nprocs;
static char *opt_nkids;
static char *opt_nreps;
-static option_t options[] = {
- {"n:", NULL, &opt_nprocs},
- {"c:", NULL, &opt_nkids},
- {"l:", NULL, &opt_nreps},
- {NULL, NULL, NULL},
+static struct tst_option options[] = {
+ {"n:", &opt_nprocs, "-n N Number of processes"},
+ {"c:", &opt_nkids, "-c N Number of read/write child pairs"},
+ {"l:", &opt_nreps, "-l N Number of iterations"},
+ {NULL, NULL, NULL}
};
-static void usage(void)
-{
- printf(" -n Number of processes\n");
- printf(" -c Number of read/write child pairs\n");
- printf(" -l Number of iterations\n");
-}
-
-int main(int argc, char **argv)
-{
- int i, j, ok, pid;
- int count, status;
-
- tst_parse_opts(argc, argv, options, usage);
-
- setup();
-
- nreps = MAXNREPS;
- nprocs = MSGMNI;
- nkids = MAXNKIDS;
-
- if (opt_nreps) {
- nreps = atoi(opt_nreps);
- if (nreps > MAXNREPS) {
- tst_resm(TINFO,
- "Requested number of iterations too large, "
- "setting to Max. of %d", MAXNREPS);
- nreps = MAXNREPS;
- }
- }
-
- if (opt_nprocs) {
- nprocs = atoi(opt_nprocs);
- if (nprocs > MSGMNI) {
- tst_resm(TINFO,
- "Requested number of processes too large, "
- "setting to Max. of %d", MSGMNI);
- nprocs = MSGMNI;
- }
- }
-
- if (opt_nkids) {
- nkids = atoi(opt_nkids);
- if (nkids > MAXNKIDS) {
- tst_resm(TINFO,
- "Requested number of read/write pairs too "
- "large, setting to Max. of %d", MAXNKIDS);
- nkids = MAXNKIDS;
- }
- }
-
- procstat = 0;
- srand48((unsigned)getpid() + (unsigned)(getppid() << 16));
- tid = -1;
-
- /* Setup signal handleing routine */
- if (sigset(SIGTERM, term) == SIG_ERR) {
- tst_brkm(TFAIL, NULL, "Sigset SIGTERM failed");
- }
- /* Set up array of unique keys for use in allocating message
- * queues
- */
- for (i = 0; i < nprocs; i++) {
- ok = 1;
- do {
- /* Get random key */
- keyarray[i] = (key_t) lrand48();
- /* Make sure key is unique and not private */
- if (keyarray[i] == IPC_PRIVATE) {
- ok = 0;
- continue;
- }
- for (j = 0; j < i; j++) {
- if (keyarray[j] == keyarray[i]) {
- ok = 0;
- break;
- }
- ok = 1;
- }
- } while (ok == 0);
- }
- /* Fork a number of processes (nprocs), each of which will
- * create a message queue with several (nkids) reader/writer
- * pairs which will read and write a number (iterations)
- * of random length messages with specific values (keys).
- */
-
- for (i = 0; i < nprocs; i++) {
- fflush(stdout);
- if ((pid = FORK_OR_VFORK()) < 0) {
- tst_brkm(TFAIL,
- NULL,
- "\tFork failed (may be OK if under stress)");
- }
- /* Child does this */
- if (pid == 0) {
- procstat = 1;
- exit(dotest(keyarray[i], i));
- }
- pidarray[i] = pid;
- }
-
- count = 0;
- while (1) {
- if ((wait(&status)) > 0) {
- if (status >> 8 != PASS) {
- tst_brkm(TFAIL, NULL,
- "Child exit status = %d",
- status >> 8);
- }
- count++;
- } else {
- if (errno != EINTR) {
- break;
- }
-#ifdef DEBUG
- tst_resm(TINFO, "Signal detected during wait");
-#endif
- }
- }
- /* Make sure proper number of children exited */
- if (count != nprocs) {
- tst_brkm(TFAIL,
- NULL,
- "Wrong number of children exited, Saw %d, Expected %d",
- count, nprocs);
- }
-
- tst_resm(TPASS, "Test ran successfully!");
-
- cleanup();
- tst_exit();
-}
-
static void cleanup_msgqueue(int i, int tid)
{
/*
@@ -226,78 +66,88 @@ static void cleanup_msgqueue(int i, int tid)
(void)kill(wkidarray[i], SIGKILL);
}
- if (msgctl(tid, IPC_RMID, 0) < 0) {
- tst_brkm(TFAIL | TERRNO, NULL, "Msgctl error in cleanup");
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
+}
+
+static void term(int sig LTP_ATTRIBUTE_UNUSED)
+{
+ int i;
+
+ if (procstat == 0) {
+ tst_res(TINFO, "SIGTERM signal received, test killing kids");
+ for (i = 0; i < nprocs; i++) {
+ if (pidarray[i] > 0)
+ if (kill(pidarray[i], SIGTERM) < 0)
+ tst_brk(TBROK, "Kill failed to kill child %d", i);
+ }
+ return;
+ }
+
+ if (procstat == 2) {
+ fflush(stdout);
+ exit(0);
+ }
+
+ if (tid == -1) {
+ exit(1);
+ }
+ for (i = 0; i < nkids; i++) {
+ if (rkidarray[i] > 0)
+ (void)kill(rkidarray[i], SIGTERM);
+ if (wkidarray[i] > 0)
+ (void)kill(wkidarray[i], SIGTERM);
}
}
-static int dotest(key_t key, int child_process)
+static void dotest(key_t key, int child_process)
{
- int id, pid;
- int i, count, status, exit_status;
+ int pid;
+ int i, count, status;
sighold(SIGTERM);
- if ((id = msgget(key, IPC_CREAT | S_IRUSR | S_IWUSR)) < 0) {
- printf("msgget() error in child %d: %s\n",
- child_process, strerror(errno));
- return FAIL;
- }
- tid = id;
+ tid = SAFE_MSGGET(key, IPC_CREAT | S_IRUSR | S_IWUSR);
sigrelse(SIGTERM);
- exit_status = PASS;
-
for (i = 0; i < nkids; i++) {
- fflush(stdout);
- if ((pid = FORK_OR_VFORK()) < 0) {
- printf("Fork failure in the first child of child group %d\n",
+ pid = fork();
+ if (pid < 0) {
+ tst_res(TFAIL, "Fork failure in the first child of child group %d\n",
child_process);
cleanup_msgqueue(i, tid);
- return FAIL;
+ return;
}
- /* First child does this */
if (pid == 0) {
procstat = 2;
- exit(doreader(key, tid, getpid(),
- child_process, nreps));
+ doreader(key, tid, getpid(), child_process, nreps);
+ exit(0);
}
rkidarray[i] = pid;
- fflush(stdout);
- if ((pid = FORK_OR_VFORK()) < 0) {
- printf("Fork failure in the second child of child group %d\n",
+ pid = fork();
+ if (pid < 0) {
+ tst_res(TFAIL, "Fork failure in the first child of child group %d\n",
child_process);
- /*
- * Kill the reader child process
- */
- (void)kill(rkidarray[i], SIGKILL);
-
cleanup_msgqueue(i, tid);
- return FAIL;
+ return;
}
- /* Second child does this */
if (pid == 0) {
procstat = 2;
- exit(dowriter(key, tid, rkidarray[i],
- child_process, nreps));
+ dowriter(key, tid, rkidarray[i], child_process, nreps);
+ exit(0);
}
wkidarray[i] = pid;
}
- /* Parent does this */
count = 0;
- while (1) {
+ while (count < (nkids * 2)) {
if ((wait(&status)) > 0) {
- if (status >> 8 != PASS) {
- printf("Child exit status = %d from child group %d\n",
+ if (status >> 8 != 0) {
+ tst_res(TFAIL, "Child exit status = %d from child group %d\n",
status >> 8, child_process);
for (i = 0; i < nkids; i++) {
- kill(rkidarray[i], SIGTERM);
- kill(wkidarray[i], SIGTERM);
- }
- if (msgctl(tid, IPC_RMID, 0) < 0) {
- printf("msgctl() error: %s\n",
- strerror(errno));
+ (void)kill(rkidarray[i], SIGTERM);
+ (void)kill(wkidarray[i], SIGTERM);
}
- return FAIL;
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
+ return;
}
count++;
} else {
@@ -308,101 +158,138 @@ static int dotest(key_t key, int child_process)
}
/* Make sure proper number of children exited */
if (count != (nkids * 2)) {
- printf("Wrong number of children exited in child group %d, saw %d, expected %d\n",
+ tst_res(TFAIL, "Wrong number of children exited in child group %d, saw %d, expected %d\n",
child_process, count, (nkids * 2));
- if (msgctl(tid, IPC_RMID, 0) < 0) {
- printf("msgctl() error: %s\n", strerror(errno));
- }
- return FAIL;
- }
- if (msgctl(id, IPC_RMID, 0) < 0) {
- printf("msgctl() failure in child group %d: %s\n",
- child_process, strerror(errno));
- return FAIL;
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
+ return;
}
- return exit_status;
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
}
-static void term(int sig LTP_ATTRIBUTE_UNUSED)
+static void verify_msgstress(void)
{
- int i;
+ int i, j, ok, pid;
+ int count, status;
- if (procstat == 0) {
-#ifdef DEBUG
- tst_resm(TINFO, "SIGTERM signal received, test killing kids");
-#endif
- for (i = 0; i < nprocs; i++) {
- if (pidarray[i] > 0) {
- if (kill(pidarray[i], SIGTERM) < 0) {
- printf("Kill failed to kill child %d",
- i);
- exit(FAIL);
+ procstat = 0;
+ srand48((unsigned)getpid() + (unsigned)(getppid() << 16));
+ tid = -1;
+
+ /* Set up array of unique keys for use in allocating messag queues*/
+ for (i = 0; i < nprocs; i++) {
+ ok = 1;
+ do {
+ /* Get random key */
+ keyarray[i] = (key_t) lrand48();
+ /* Make sure key is unique and not private */
+ if (keyarray[i] == IPC_PRIVATE) {
+ ok = 0;
+ continue;
+ }
+ for (j = 0; j < i; j++) {
+ if (keyarray[j] == keyarray[i]) {
+ ok = 0;
+ break;
}
+ ok = 1;
}
- }
- return;
+ } while (ok == 0);
}
-
- if (procstat == 2) {
- fflush(stdout);
- exit(PASS);
+ /* Fork a number of processes (nprocs), each of which will
+ * create a message queue with several (nkids) reader/writer
+ * pairs which will read and write a number (iterations)
+ * of random length messages with specific values (keys).
+ */
+ for (i = 0; i < nprocs; i++) {
+ pid = SAFE_FORK();
+ if (pid == 0) {
+ procstat = 1;
+ dotest(keyarray[i], i);
+ exit(0);
+ }
+ pidarray[i] = pid;
}
-
- if (tid == -1) {
- exit(FAIL);
+ count = 0;
+ while (count < nprocs) {
+ SAFE_WAIT(&status);
+ if (!WIFEXITED(status))
+ tst_res(TFAIL, "child process doesn't terminate normally");
+ count++;
}
- for (i = 0; i < nkids; i++) {
- if (rkidarray[i] > 0)
- kill(rkidarray[i], SIGTERM);
- if (wkidarray[i] > 0)
- kill(wkidarray[i], SIGTERM);
+ /* Make sure proper number of children exited */
+ if (count != nprocs) {
+ tst_brk(TFAIL,
+ "Wrong number of children exited, Saw %d, Expected %d",
+ count, nprocs);
}
+
+ tst_res(TPASS, "Test ran successfully!");
+ cleanup();
}
-void setup(void)
+static void setup(void)
{
int nr_msgqs;
+ int threads_max;
+ int free_pids;
- tst_tmpdir();
+ SAFE_FILE_SCANF("/proc/sys/kernel/msgmni", "%d", &nr_msgqs);
+ SAFE_FILE_SCANF("/proc/sys/kernel/threads-max", "%d", &threads_max);
- tst_sig(FORK, DEF_HANDLER, cleanup);
+ MSGMNI = nr_msgqs - GET_USED_QUEUES();
+ if (MSGMNI <= 0)
+ tst_brk(TCONF, "Max number of message queues already used, cannot create more.");
- TEST_PAUSE;
+ tst_res(TINFO, "Found %d available message queues", MSGMNI);
- nr_msgqs = get_max_msgqueues();
- if (nr_msgqs < 0)
- cleanup();
+ if (opt_nreps) {
+ nreps = SAFE_STRTOL(opt_nreps, 1, INT_MAX);
+ nreps = min(nreps, MAXNREPS);
+ } else {
+ nreps = 1000;
+ }
- nr_msgqs -= get_used_msgqueues();
- if (nr_msgqs <= 0) {
- tst_resm(TBROK,
- "Max number of message queues already used, cannot create more.");
- cleanup();
+ if (opt_nkids) {
+ nkids = SAFE_STRTOL(opt_nkids, 1, INT_MAX);
+ nkids = min(nkids, MAXNKIDS);
+ } else {
+ nkids = MAXNKIDS;
}
- /*
- * Since msgmni scales to the memory size, it may reach huge values
- * that are not necessary for this test.
- * That's why we define NR_MSGQUEUES as a high boundary for it.
- */
- MSGMNI = min(nr_msgqs, NR_MSGQUEUES);
-}
+ if (opt_nprocs) {
+ nprocs = SAFE_STRTOL(opt_nprocs, 1, INT_MAX);
+ nprocs = min(nprocs, MAXNPROCS);
+ nprocs = min(nprocs, nr_msgqs);
+ } else {
+ nprocs = NR_MSGQUEUES;
+ }
-void cleanup(void)
-{
- int status;
+ free_pids = tst_get_free_pids();
+ if (free_pids < 0)
+ tst_brk(TBROK, "Can't obtain free_pid count");
+ if (!free_pids)
+ tst_brk(TBROK, "No free pids");
-#ifdef DEBUG
- tst_resm(TINFO, "Removing the message queue");
-#endif
- fflush(stdout);
- (void)msgctl(tid, IPC_RMID, NULL);
- if ((status = msgctl(tid, IPC_STAT, NULL)) != -1) {
- (void)msgctl(tid, IPC_RMID, NULL);
- tst_resm(TFAIL, "msgctl(tid, IPC_RMID) failed");
+ free_pids = min(free_pids, 0.3 * threads_max);
+ nprocs = min(nprocs, (free_pids / 2) / (1 + 2 * nkids));
+ if (!nprocs)
+ tst_brk(TBROK, "Not enough free pids");
- }
+ SAFE_SIGNAL(SIGTERM, term);
+ tst_res(TINFO, "%d processes %d read/write pais, %d repeats", nprocs, nkids, nreps);
+}
- fflush(stdout);
- tst_rmdir();
+void cleanup(void)
+{
+ if (tid >= 0)
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
}
+
+static struct tst_test test = {
+ .needs_tmpdir = 1,
+ .options = options,
+ .setup = setup,
+ .cleanup = cleanup,
+ .forks_child = 1,
+ .test_all = verify_msgstress,
+};
deleted file mode 100644
@@ -1,290 +0,0 @@
-/*
- * Copyright (c) International Business Machines Corp., 2002
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * 06/30/2001 Port to Linux nsharoff@us.ibm.com
- * 11/06/2002 Port to LTP dbarrera@us.ibm.com
- */
-
-/*
- * Get and manipulate a message queue.
- * Same as msgstress01 but gets the actual msgmni value under procfs.
- */
-
-#define _XOPEN_SOURCE 500
-#include <signal.h>
-#include <errno.h>
-#include <string.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <values.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <sys/ipc.h>
-#include <sys/msg.h>
-#include "test.h"
-#include "ipcmsg.h"
-#include "libmsgctl.h"
-
-char *TCID = "msgstress03";
-int TST_TOTAL = 1;
-
-#define MAXNPROCS 10000 /*These should be sufficient */
-#define MAXNREPS 10000 /*Else they srewup the system un-necessarily */
-
-static key_t keyarray[MAXNPROCS];
-static int pidarray[MAXNPROCS];
-static int tid;
-static int MSGMNI, nprocs, nreps;
-static int procstat;
-static int mykid;
-
-void setup(void);
-void cleanup(void);
-
-static int dotest(key_t key, int child_process);
-static void sig_handler(int signo);
-
-static char *opt_nprocs;
-static char *opt_nreps;
-
-static option_t options[] = {
- {"n:", NULL, &opt_nprocs},
- {"l:", NULL, &opt_nreps},
- {NULL, NULL, NULL},
-};
-
-static void usage(void)
-{
- printf(" -n Number of processes\n");
- printf(" -l Number of iterations\n");
-}
-
-int main(int argc, char **argv)
-{
- int i, j, ok, pid;
- int count, status;
- struct sigaction act;
-
- tst_parse_opts(argc, argv, options, usage);
-
- setup();
-
- nreps = MAXNREPS;
- nprocs = MSGMNI;
-
- if (opt_nreps) {
- nreps = atoi(opt_nreps);
- if (nreps > MAXNREPS) {
- tst_resm(TINFO,
- "Requested number of iterations too large, "
- "setting to Max. of %d", MAXNREPS);
- nreps = MAXNREPS;
- }
- }
-
- if (opt_nprocs) {
- nprocs = atoi(opt_nprocs);
- if (nprocs > MSGMNI) {
- tst_resm(TINFO,
- "Requested number of processes too large, "
- "setting to Max. of %d", MSGMNI);
- nprocs = MSGMNI;
- }
- }
-
- srand(getpid());
- tid = -1;
-
- /* Setup signal handling routine */
- memset(&act, 0, sizeof(act));
- act.sa_handler = sig_handler;
- sigemptyset(&act.sa_mask);
- sigaddset(&act.sa_mask, SIGTERM);
- if (sigaction(SIGTERM, &act, NULL) < 0) {
- tst_brkm(TFAIL, NULL, "Sigset SIGTERM failed");
- }
- /* Set up array of unique keys for use in allocating message
- * queues
- */
- for (i = 0; i < nprocs; i++) {
- ok = 1;
- do {
- /* Get random key */
- keyarray[i] = (key_t) rand();
- /* Make sure key is unique and not private */
- if (keyarray[i] == IPC_PRIVATE) {
- ok = 0;
- continue;
- }
- for (j = 0; j < i; j++) {
- if (keyarray[j] == keyarray[i]) {
- ok = 0;
- break;
- }
- ok = 1;
- }
- } while (ok == 0);
- }
-
- /* Fork a number of processes, each of which will
- * create a message queue with one reader/writer
- * pair which will read and write a number (iterations)
- * of random length messages with specific values.
- */
-
- for (i = 0; i < nprocs; i++) {
- fflush(stdout);
- if ((pid = FORK_OR_VFORK()) < 0) {
- tst_brkm(TFAIL,
- NULL,
- "\tFork failed (may be OK if under stress)");
- }
- /* Child does this */
- if (pid == 0) {
- procstat = 1;
- exit(dotest(keyarray[i], i));
- }
- pidarray[i] = pid;
- }
-
- count = 0;
- while (1) {
- if ((wait(&status)) > 0) {
- if (status >> 8 != 0) {
- tst_brkm(TFAIL, NULL,
- "Child exit status = %d",
- status >> 8);
- }
- count++;
- } else {
- if (errno != EINTR) {
- break;
- }
-#ifdef DEBUG
- tst_resm(TINFO, "Signal detected during wait");
-#endif
- }
- }
- /* Make sure proper number of children exited */
- if (count != nprocs) {
- tst_brkm(TFAIL,
- NULL,
- "Wrong number of children exited, Saw %d, Expected %d",
- count, nprocs);
- }
-
- tst_resm(TPASS, "Test ran successfully!");
-
- cleanup();
- tst_exit();
-}
-
-static int dotest(key_t key, int child_process)
-{
- int id, pid;
- int ret, status;
-
- sighold(SIGTERM);
- TEST(msgget(key, IPC_CREAT | S_IRUSR | S_IWUSR));
- if (TEST_RETURN < 0) {
- printf("msgget() error in child %d: %s\n",
- child_process, strerror(TEST_ERRNO));
- return FAIL;
- }
- tid = id = TEST_RETURN;
- sigrelse(SIGTERM);
-
- fflush(stdout);
- if ((pid = FORK_OR_VFORK()) < 0) {
- printf("Fork failed (may be OK if under stress)\n");
- TEST(msgctl(tid, IPC_RMID, 0));
- if (TEST_RETURN < 0) {
- printf("msgctl() error in cleanup: %s\n",
- strerror(TEST_ERRNO));
- }
- return FAIL;
- }
- if (pid == 0)
- exit(doreader(key, id, 1, child_process, nreps));
-
- mykid = pid;
- procstat = 2;
- ret = dowriter(key, id, 1, child_process, nreps);
- wait(&status);
-
- if (ret != PASS)
- exit(FAIL);
-
- if ((!WIFEXITED(status) || (WEXITSTATUS(status) != PASS)))
- exit(FAIL);
-
- TEST(msgctl(id, IPC_RMID, 0));
- if (TEST_RETURN < 0) {
- printf("msgctl() failed: %s\n",
- strerror(TEST_ERRNO));
- return FAIL;
- }
- return PASS;
-}
-
-static void sig_handler(int signo LTP_ATTRIBUTE_UNUSED)
-{
-}
-
-void setup(void)
-{
- int nr_msgqs;
-
- tst_tmpdir();
-
- tst_sig(FORK, DEF_HANDLER, cleanup);
-
- TEST_PAUSE;
-
- nr_msgqs = get_max_msgqueues();
- if (nr_msgqs < 0)
- cleanup();
-
- MSGMNI = nr_msgqs - get_used_msgqueues();
- if (MSGMNI > MAXNPROCS)
- MSGMNI = MAXNPROCS;
- if (MSGMNI <= 0) {
- tst_resm(TBROK,
- "Max number of message queues already used, cannot create more.");
- cleanup();
- }
-}
-
-void cleanup(void)
-{
- int status;
-
-#ifdef DEBUG
- tst_resm(TINFO, "Removing the message queue");
-#endif
- (void)msgctl(tid, IPC_RMID, NULL);
- if ((status = msgctl(tid, IPC_STAT, NULL)) != -1) {
- (void)msgctl(tid, IPC_RMID, NULL);
- tst_resm(TFAIL, "msgctl(tid, IPC_RMID) failed");
-
- }
-
- tst_rmdir();
-}
@@ -1,32 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2002
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
* 06/30/2001 Port to Linux nsharoff@us.ibm.com
* 11/11/2002 Port to LTP dbarrera@us.ibm.com
- */
-
-/*
+ * 06/15/2020 Convert to new api xuyang2018.jy@cn.fujitsu.com
+ *
* Get and manipulate a message queue.
* Same as msgstress02 but gets the actual msgmni value under procfs.
*/
-
#define _XOPEN_SOURCE 500
#include <sys/stat.h>
-#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/wait.h>
@@ -36,23 +20,15 @@
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
-#include "test.h"
-#include "ipcmsg.h"
-#include "libmsgctl.h"
-
-char *TCID = "msgstress04";
-int TST_TOTAL = 1;
+#include "tst_test.h"
+#include "libnewipc.h"
+#include "tst_safe_sysv_ipc.h"
+#include "libnewmsgctl.h"
#define MAXNREPS 1000
-#ifndef CONFIG_COLDFIRE
-#define MAXNPROCS 1000000 /* This value is set to an arbitrary high limit. */
-#else
-#define MAXNPROCS 100000 /* Coldfire can't deal with 1000000 */
-#endif
+#define MAXNPROCS 1000000
#define MAXNKIDS 10
-#define DEFNKIDS 2
-static int maxnkids = MAXNKIDS; /* Used if pid_max is exceeded */
static key_t keyarray[MAXNPROCS];
static int pidarray[MAXNPROCS];
static int rkidarray[MAXNKIDS];
@@ -62,86 +38,116 @@ static int nprocs, nreps, nkids, MSGMNI;
static int maxnprocs;
static int procstat;
-void setup(void);
-void cleanup(void);
+static void cleanup(void);
static void term(int);
-static int dotest(key_t, int);
-static void dotest_iteration(int off);
-static void cleanup_msgqueue(int i, int tid);
+static void dotest(key_t, int);
static char *opt_maxnprocs;
static char *opt_nkids;
static char *opt_nreps;
-static option_t options[] = {
- {"n:", NULL, &opt_maxnprocs},
- {"c:", NULL, &opt_nkids},
- {"l:", NULL, &opt_nreps},
- {NULL, NULL, NULL},
+static struct tst_option options[] = {
+ {"n:", &opt_maxnprocs, "-n N Number of processes"},
+ {"c:", &opt_nkids, "-c N Number of read/write child pairs"},
+ {"l:", &opt_nreps, "-l N Number of iterations"},
+ {NULL, NULL, NULL}
};
-static void usage(void)
+static void cleanup_msgqueue(int i, int tid)
{
- printf(" -n Number of processes\n");
- printf(" -c Number of read/write child pairs\n");
- printf(" -l Number of iterations\n");
-}
+ /*
+ * Decrease the value of i by 1 because it
+ * is getting incremented even if the fork
+ * is failing.
+ */
+ i--;
+ /*
+ * Kill all children & free message queue.
+ */
+ for (; i >= 0; i--) {
+ (void)kill(rkidarray[i], SIGKILL);
+ (void)kill(wkidarray[i], SIGKILL);
+ }
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
+}
-int main(int argc, char **argv)
+static void term(int sig LTP_ATTRIBUTE_UNUSED)
{
- int i, j, ok;
+ int i;
- tst_parse_opts(argc, argv, options, usage);
+ if (procstat == 0) {
+ tst_res(TINFO, "SIGTERM signal received, test killing kids");
+ for (i = 0; i < nprocs; i++) {
+ if (pidarray[i] > 0)
+ if (kill(pidarray[i], SIGTERM) < 0)
+ tst_brk(TBROK, "Kill failed to kill child %d", i);
+ }
+ return;
+ }
- setup();
+ if (procstat == 2)
+ exit(0);
- nreps = MAXNREPS;
- nkids = MAXNKIDS;
+ if (tid == -1)
+ exit(1);
- if (opt_nreps) {
- nreps = atoi(opt_nreps);
- if (nreps > MAXNREPS) {
- tst_resm(TINFO,
- "Requested number of iterations too large, "
- "setting to Max. of %d", MAXNREPS);
- nreps = MAXNREPS;
- }
+ for (i = 0; i < nkids; i++) {
+ if (rkidarray[i] > 0)
+ (void)kill(rkidarray[i], SIGTERM);
+ if (wkidarray[i] > 0)
+ (void)kill(wkidarray[i], SIGTERM);
}
+}
- if (opt_nkids) {
- nkids = atoi(opt_nkids);
- if (nkids > MAXNKIDS) {
- tst_resm(TINFO,
- "Requested number of read/write pairs too "
- "large, setting to Max. of %d", MAXNKIDS);
- nkids = MAXNKIDS;
+static void dotest_iteration(int off)
+{
+ key_t key;
+ int i, count, status;
+ pid_t pid;
+ memset(pidarray, 0, sizeof(pidarray));
+
+ for (i = 0; i < nprocs; i++) {
+ key = keyarray[off + i];
+ pid = SAFE_FORK();
+ if (pid == 0) {
+ procstat = 1;
+ dotest(key, i);
+ exit(0);
}
+ pidarray[i] = pid;
}
-
- if (opt_maxnprocs) {
- if (atoi(opt_maxnprocs) > maxnprocs) {
- tst_resm(TINFO,
- "Requested number of processes too large, "
- "setting to Max. of %d", MSGMNI);
+ count = 0;
+ while (1) {
+ if ((wait(&status)) > 0) {
+ if (status >> 8 != 0)
+ tst_brk(TFAIL,
+ "Child exit status = %d", status >> 8);
+ count++;
} else {
- maxnprocs = atoi(opt_maxnprocs);
+ if (errno != EINTR)
+ break;
+ tst_res(TINFO, "Signal detected during wait");
}
}
+ /* Make sure proper number of children exited */
+ if (count != nprocs)
+ tst_brk(TFAIL,
+ "Wrong number of children exited, Saw %d, Expected %d",
+ count, nprocs);
+}
+
+static void verify_msgstress(void)
+{
+ int i, j, ok;
procstat = 0;
srand48((unsigned)getpid() + (unsigned)(getppid() << 16));
tid = -1;
- /* Setup signal handling routine */
- if (sigset(SIGTERM, term) == SIG_ERR)
- tst_brkm(TFAIL, cleanup, "Sigset SIGTERM failed");
-
- /* Set up array of unique keys for use in allocating message
- * queues
- */
+ /*Set up array of unique keys for use in allocating message queues*/
for (i = 0; i < MSGMNI; i++) {
ok = 1;
do {
@@ -161,15 +167,11 @@ int main(int argc, char **argv)
}
} while (ok == 0);
}
- /* Fork a number of processes, each of which will
+ /* Fork a number of processes (nprocs), each of which will
* create a message queue with several (nkids) reader/writer
* pairs which will read and write a number (iterations)
* of random length messages with specific values (keys).
- *
- * We do not fork more than maxnprocs at a time and
- * we fork until all the message queues get used.
*/
-
if (MSGMNI <= maxnprocs) {
nprocs = MSGMNI;
dotest_iteration(0);
@@ -178,132 +180,49 @@ int main(int argc, char **argv)
nprocs = maxnprocs;
dotest_iteration(i * maxnprocs);
}
-
nprocs = MSGMNI % maxnprocs;
dotest_iteration(i * maxnprocs);
}
- tst_resm(TPASS, "Test ran successfully!");
-
+ tst_res(TPASS, "Test ran successfully!");
cleanup();
- tst_exit();
}
-static void dotest_iteration(int off)
-{
- key_t key;
- int i, count, status;
- pid_t pid;
-
- memset(pidarray, 0, sizeof(pidarray));
-
- for (i = 0; i < nprocs; i++) {
- key = keyarray[off + i];
-
- if ((pid = FORK_OR_VFORK()) < 0)
- tst_brkm(TFAIL, cleanup,
- "Fork failed (may be OK if under stress)");
-
- /* Child does this */
- if (pid == 0) {
- procstat = 1;
- exit(dotest(key, i));
- }
- pidarray[i] = pid;
- }
-
- count = 0;
- while (1) {
- if ((wait(&status)) > 0) {
- if (status >> 8 != PASS)
- tst_brkm(TFAIL, cleanup,
- "Child exit status = %d", status >> 8);
- count++;
- } else {
- if (errno != EINTR) {
- break;
- }
-#ifdef DEBUG
- tst_resm(TINFO, "Signal detected during wait");
-#endif
- }
- }
- /* Make sure proper number of children exited */
- if (count != nprocs)
- tst_brkm(TFAIL, cleanup,
- "Wrong number of children exited, Saw %d, Expected %d",
- count, nprocs);
-}
-
-static void cleanup_msgqueue(int i, int tid)
-{
- /*
- * Decrease the value of i by 1 because it
- * is getting incremented even if the fork
- * is failing.
- */
-
- i--;
- /*
- * Kill all children & free message queue.
- */
- for (; i >= 0; i--) {
- (void)kill(rkidarray[i], SIGKILL);
- (void)kill(wkidarray[i], SIGKILL);
- }
-
- if (msgctl(tid, IPC_RMID, 0) < 0) {
- printf("Msgctl error in cleanup_msgqueue %d\n", errno);
- exit(FAIL);
- }
-}
-
-static int dotest(key_t key, int child_process)
+static void dotest(key_t key, int child_process)
{
int id, pid;
- int i, count, status, exit_status;
+ int i, count, status;
sighold(SIGTERM);
- if ((id = msgget(key, IPC_CREAT | S_IRUSR | S_IWUSR)) < 0) {
- printf("msgget() error in child %d: %s\n",
- child_process, strerror(errno));
- return FAIL;
- }
+ id = SAFE_MSGGET(key, IPC_CREAT | S_IRUSR | S_IWUSR);
tid = id;
sigrelse(SIGTERM);
- exit_status = PASS;
-
for (i = 0; i < nkids; i++) {
- if ((pid = FORK_OR_VFORK()) < 0) {
- printf("Fork failure in the first child of child group %d\n",
+ pid = fork();
+ if (pid < 0) {
+ tst_res(TFAIL, "Fork failure in the first child of child group %d\n",
child_process);
cleanup_msgqueue(i, tid);
- return FAIL;
+ return;
}
- /* First child does this */
if (pid == 0) {
procstat = 2;
- exit(doreader(key, tid, getpid(),
- child_process, nreps));
+ doreader(key, tid, getpid(), child_process, nreps);
+ exit(0);
}
rkidarray[i] = pid;
- if ((pid = FORK_OR_VFORK()) < 0) {
- printf("Fork failure in the second child of child group %d\n",
+ pid = fork();
+ if (pid < 0) {
+ tst_res(TFAIL, "Fork failure in the first child of child group %d\n",
child_process);
- /*
- * Kill the reader child process
- */
- (void)kill(rkidarray[i], SIGKILL);
-
cleanup_msgqueue(i, tid);
- return FAIL;
+ return;
}
- /* Second child does this */
if (pid == 0) {
procstat = 2;
- exit(dowriter(key, tid, rkidarray[i],
- child_process, nreps));
+ dowriter(key, tid, rkidarray[i], child_process, nreps);
+ exit(0);
}
wkidarray[i] = pid;
}
@@ -311,18 +230,15 @@ static int dotest(key_t key, int child_process)
count = 0;
while (1) {
if ((wait(&status)) > 0) {
- if (status >> 8 != PASS) {
+ if (status >> 8 != 0) {
printf("Child exit status = %d from child group %d\n",
status >> 8, child_process);
for (i = 0; i < nkids; i++) {
kill(rkidarray[i], SIGTERM);
kill(wkidarray[i], SIGTERM);
}
- if (msgctl(tid, IPC_RMID, 0) < 0) {
- printf("msgctl() error: %s\n",
- strerror(errno));
- }
- return FAIL;
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
+ return;
}
count++;
} else {
@@ -335,116 +251,74 @@ static int dotest(key_t key, int child_process)
if (count != (nkids * 2)) {
printf("Wrong number of children exited in child group %d, saw %d, expected %d\n",
child_process, count, (nkids * 2));
- if (msgctl(tid, IPC_RMID, 0) < 0) {
- printf("msgctl() error: %s\n", strerror(errno));
- }
- return FAIL;
- }
- if (msgctl(id, IPC_RMID, 0) < 0) {
- printf("msgctl() failure in child group %d: %s\n",
- child_process, strerror(errno));
- return FAIL;
- }
- return exit_status;
-}
-
-/* ARGSUSED */
-static void term(int sig LTP_ATTRIBUTE_UNUSED)
-{
- int i;
-
- if (procstat == 0) {
-#ifdef DEBUG
- tst_resm(TINFO, "SIGTERM signal received, test killing kids");
-#endif
- for (i = 0; i < nprocs; i++) {
- if (pidarray[i] > 0) {
- if (kill(pidarray[i], SIGTERM) < 0) {
- tst_resm(TBROK,
- "Kill failed to kill child %d",
- i);
- exit(FAIL);
- }
- }
- }
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
return;
}
-
- if (procstat == 2) {
- exit(PASS);
- }
-
- if (tid == -1) {
- exit(FAIL);
- }
- for (i = 0; i < nkids; i++) {
- if (rkidarray[i] > 0)
- kill(rkidarray[i], SIGTERM);
- if (wkidarray[i] > 0)
- kill(wkidarray[i], SIGTERM);
- }
+ SAFE_MSGCTL(id, IPC_RMID, NULL);
}
-void setup(void)
+static void setup(void)
{
- int nr_msgqs, free_pids;
+ int nr_msgqs;
+ int threads_max;
+ int free_pids;
- tst_tmpdir();
- /* You will want to enable some signal handling so you can capture
- * unexpected signals like SIGSEGV.
- */
- tst_sig(FORK, DEF_HANDLER, cleanup);
+ SAFE_FILE_SCANF("/proc/sys/kernel/msgmni", "%d", &nr_msgqs);
+ SAFE_FILE_SCANF("/proc/sys/kernel/threads-max", "%d", &threads_max);
- /* One cavet that hasn't been fixed yet. TEST_PAUSE contains the code to
- * fork the test with the -c option. You want to make sure you do this
- * before you create your temporary directory.
- */
- TEST_PAUSE;
+ MSGMNI = nr_msgqs - GET_USED_QUEUES();
+ if (MSGMNI <= 0)
+ tst_brk(TCONF, "Max number of message queues already used, cannot create more.");
- nr_msgqs = get_max_msgqueues();
- if (nr_msgqs < 0)
- tst_brkm(TBROK, cleanup, "get_max_msgqueues() failed");
+ tst_res(TINFO, "Found %d available message queues", MSGMNI);
- MSGMNI = nr_msgqs - get_used_msgqueues();
- if (MSGMNI <= 0)
- tst_brkm(TBROK, cleanup,
- "Max number of message queues already used, cannot create more.");
+ nreps = MAXNREPS;
+ nkids = MAXNKIDS;
- tst_resm(TINFO, "Found %d available message queues", MSGMNI);
+ if (opt_nreps) {
+ nreps = SAFE_STRTOL(opt_nreps, 1, INT_MAX);
+ nreps = min(nreps, MAXNREPS);
+ }
- free_pids = tst_get_free_pids(cleanup);
- if (free_pids < 0) {
- tst_brkm(TBROK, cleanup, "Can't obtain free_pid count");
- } else if (!free_pids) {
- tst_brkm(TBROK, cleanup, "No free pids");
+ if (opt_nkids) {
+ nkids = SAFE_STRTOL(opt_nkids, 1, INT_MAX);
+ nkids = min(nkids, MAXNKIDS);
}
- /* We don't use more than a half of available pids.
- * For each child we fork up to 2*maxnkids grandchildren. */
- maxnprocs = (free_pids / 2) / (1 + 2 * maxnkids);
+ free_pids = tst_get_free_pids();
+ if (free_pids < 0)
+ tst_brk(TBROK, "Can't obtain free_pid count");
+ if (!free_pids)
+ tst_brk(TBROK, "No free pids");
+ /*
+ * We don't use more than a half of available pids.
+ * For each child we fork up to 2*maxnkids grandchildren.
+ */
+ free_pids = min(free_pids, 0.3 * threads_max);
+ maxnprocs = (free_pids / 2) / (1 + 2 * nkids);
if (!maxnprocs)
- tst_brkm(TBROK, cleanup, "Not enough free pids");
+ tst_brk(TBROK, "Not enough free pids");
- tst_resm(TINFO, "Using upto %d pids", free_pids / 2);
+ if (opt_maxnprocs) {
+ maxnprocs = SAFE_STRTOL(opt_maxnprocs, 1, maxnprocs);
+ }
+
+ SAFE_SIGNAL(SIGTERM, term);
+ tst_res(TINFO, "Using upto %d pids, %d processes %d read/write pais, %d repeats", free_pids/2, maxnprocs, nkids, nreps);
}
void cleanup(void)
{
- int status;
-
- /*
- * Remove the message queue from the system
- */
-#ifdef DEBUG
- tst_resm(TINFO, "Removing the message queue");
-#endif
- (void)msgctl(tid, IPC_RMID, NULL);
- if ((status = msgctl(tid, IPC_STAT, NULL)) != -1) {
- (void)msgctl(tid, IPC_RMID, NULL);
- tst_resm(TFAIL, "msgctl(tid, IPC_RMID) failed");
-
- }
-
- tst_rmdir();
+ if (tid >= 0)
+ SAFE_MSGCTL(tid, IPC_RMID, NULL);
}
+
+static struct tst_test test = {
+ .needs_tmpdir = 1,
+ .options = options,
+ .setup = setup,
+ .cleanup = cleanup,
+ .forks_child = 1,
+ .test_all = verify_msgstress,
+};