X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fntdb%2Ftools%2Fntdbtorture.c;fp=ccan%2Fntdb%2Ftools%2Fntdbtorture.c;h=0000000000000000000000000000000000000000;hb=1aab74723e837a0fd8091e264a325bb2cdcdd0fa;hp=9fd25ca7c6c9bda38d6f09eafb6ade35c591ece3;hpb=979071e8587d4819a7f78613b68d29e222e5db63;p=ccan

diff --git a/ccan/ntdb/tools/ntdbtorture.c b/ccan/ntdb/tools/ntdbtorture.c
deleted file mode 100644
index 9fd25ca7..00000000
--- a/ccan/ntdb/tools/ntdbtorture.c
+++ /dev/null
@@ -1,535 +0,0 @@
-/* this tests ntdb by doing lots of ops from several simultaneous
-   writers - that stresses the locking code.
-*/
-
-#include "config.h"
-#include "ntdb.h"
-#include "private.h"
-#include <ccan/err/err.h>
-
-//#define REOPEN_PROB 30
-#define DELETE_PROB 8
-#define STORE_PROB 4
-#define APPEND_PROB 6
-#define TRANSACTION_PROB 10
-#define TRANSACTION_PREPARE_PROB 2
-#define LOCKSTORE_PROB 5
-#define TRAVERSE_PROB 20
-#define TRAVERSE_MOD_PROB 100
-#define TRAVERSE_ABORT_PROB 500
-#define CULL_PROB 100
-#define KEYLEN 3
-#define DATALEN 100
-
-static struct ntdb_context *db;
-static int in_transaction;
-static int in_traverse;
-static int error_count;
-#if TRANSACTION_PROB
-static int always_transaction = 0;
-#endif
-static int loopnum;
-static int count_pipe;
-static union ntdb_attribute log_attr;
-static union ntdb_attribute seed_attr;
-static union ntdb_attribute hsize_attr;
-
-static void ntdb_log(struct ntdb_context *ntdb,
-		    enum ntdb_log_level level,
-		    enum NTDB_ERROR ecode,
-		    const char *message,
-		    void *data)
-{
-	printf("ntdb:%s:%s:%s\n",
-	       ntdb_name(ntdb), ntdb_errorstr(ecode), message);
-	fflush(stdout);
-#if 0
-	{
-		char str[200];
-		signal(SIGUSR1, SIG_IGN);
-		sprintf(str,"xterm -e gdb /proc/%u/exe %u", (unsigned int)getpid(), (unsigned int)getpid());
-		system(str);
-	}
-#endif
-}
-
-#include "../private.h"
-
-static void segv_handler(int sig, siginfo_t *info, void *p)
-{
-	char string[100];
-
-	sprintf(string, "%u: death at %p (map_ptr %p, map_size %zu)\n",
-		(unsigned int)getpid(), info->si_addr, db->file->map_ptr,
-		(size_t)db->file->map_size);
-	if (write(2, string, strlen(string)) > 0)
-		sleep(60);
-	_exit(11);
-}
-
-static void warn_on_err(enum NTDB_ERROR e, struct ntdb_context *ntdb,
-			const char *why)
-{
-	if (e != NTDB_SUCCESS) {
-		fprintf(stderr, "%u:%s:%s\n", (unsigned int)getpid(), why,
-			ntdb ? ntdb_errorstr(e) : "(no ntdb)");
-		error_count++;
-	}
-}
-
-static char *randbuf(int len)
-{
-	char *buf;
-	int i;
-	buf = (char *)malloc(len+1);
-	if (buf == NULL) {
-		perror("randbuf: unable to allocate memory for buffer.\n");
-		exit(1);
-	}
-
-	for (i=0;i<len;i++) {
-		buf[i] = 'a' + (rand() % 26);
-	}
-	buf[i] = 0;
-	return buf;
-}
-
-static void addrec_db(void);
-static int modify_traverse(struct ntdb_context *ntdb, NTDB_DATA key, NTDB_DATA dbuf,
-			   void *state)
-{
-#if CULL_PROB
-	if (random() % CULL_PROB == 0) {
-		ntdb_delete(ntdb, key);
-	}
-#endif
-
-#if TRAVERSE_MOD_PROB
-	if (random() % TRAVERSE_MOD_PROB == 0) {
-		addrec_db();
-	}
-#endif
-
-#if TRAVERSE_ABORT_PROB
-	if (random() % TRAVERSE_ABORT_PROB == 0)
-		return 1;
-#endif
-
-	return 0;
-}
-
-static void addrec_db(void)
-{
-	int klen, dlen;
-	char *k, *d;
-	NTDB_DATA key, data;
-	enum NTDB_ERROR e;
-
-	klen = 1 + (rand() % KEYLEN);
-	dlen = 1 + (rand() % DATALEN);
-
-	k = randbuf(klen);
-	d = randbuf(dlen);
-
-	key.dptr = (unsigned char *)k;
-	key.dsize = klen+1;
-
-	data.dptr = (unsigned char *)d;
-	data.dsize = dlen+1;
-
-#if REOPEN_PROB
-	if (in_traverse == 0 && in_transaction == 0 && random() % REOPEN_PROB == 0) {
-		ntdb_reopen_all(0);
-		goto next;
-	}
-#endif
-
-#if TRANSACTION_PROB
-	if (in_traverse == 0 && in_transaction == 0 && (always_transaction || random() % TRANSACTION_PROB == 0)) {
-		e = ntdb_transaction_start(db);
-		warn_on_err(e, db, "ntdb_transaction_start failed");
-		in_transaction++;
-		goto next;
-	}
-	if (in_traverse == 0 && in_transaction && random() % TRANSACTION_PROB == 0) {
-		if (random() % TRANSACTION_PREPARE_PROB == 0) {
-			e = ntdb_transaction_prepare_commit(db);
-			warn_on_err(e, db, "ntdb_transaction_prepare_commit failed");
-		}
-		e = ntdb_transaction_commit(db);
-		warn_on_err(e, db, "ntdb_transaction_commit failed");
-		in_transaction--;
-		goto next;
-	}
-
-	if (in_traverse == 0 && in_transaction && random() % TRANSACTION_PROB == 0) {
-		ntdb_transaction_cancel(db);
-		in_transaction--;
-		goto next;
-	}
-#endif
-
-#if DELETE_PROB
-	if (random() % DELETE_PROB == 0) {
-		ntdb_delete(db, key);
-		goto next;
-	}
-#endif
-
-#if STORE_PROB
-	if (random() % STORE_PROB == 0) {
-		e = ntdb_store(db, key, data, NTDB_REPLACE);
-		warn_on_err(e, db, "ntdb_store failed");
-		goto next;
-	}
-#endif
-
-#if APPEND_PROB
-	if (random() % APPEND_PROB == 0) {
-		e = ntdb_append(db, key, data);
-		warn_on_err(e, db, "ntdb_append failed");
-		goto next;
-	}
-#endif
-
-#if LOCKSTORE_PROB
-	if (random() % LOCKSTORE_PROB == 0) {
-		ntdb_chainlock(db, key);
-		if (ntdb_fetch(db, key, &data) != NTDB_SUCCESS) {
-			data.dsize = 0;
-			data.dptr = NULL;
-		}
-		e = ntdb_store(db, key, data, NTDB_REPLACE);
-		warn_on_err(e, db, "ntdb_store failed");
-		if (data.dptr) free(data.dptr);
-		ntdb_chainunlock(db, key);
-		goto next;
-	}
-#endif
-
-#if TRAVERSE_PROB
-	/* FIXME: recursive traverses break transactions? */
-	if (in_traverse == 0 && random() % TRAVERSE_PROB == 0) {
-		in_traverse++;
-		ntdb_traverse(db, modify_traverse, NULL);
-		in_traverse--;
-		goto next;
-	}
-#endif
-
-	if (ntdb_fetch(db, key, &data) == NTDB_SUCCESS)
-		free(data.dptr);
-
-next:
-	free(k);
-	free(d);
-}
-
-static int traverse_fn(struct ntdb_context *ntdb, NTDB_DATA key, NTDB_DATA dbuf,
-                       void *state)
-{
-	ntdb_delete(ntdb, key);
-	return 0;
-}
-
-static void usage(void)
-{
-	printf("Usage: ntdbtorture"
-#if TRANSACTION_PROB
-	       " [-t]"
-#endif
-	       " [-k] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-S] [-H HASH_SIZE]\n");
-	exit(0);
-}
-
-static void send_count_and_suicide(int sig)
-{
-	/* This ensures our successor can continue where we left off. */
-	if (write(count_pipe, &loopnum, sizeof(loopnum)) != sizeof(loopnum))
-		exit(2);
-	/* This gives a unique signature. */
-	kill(getpid(), SIGUSR2);
-}
-
-static int run_child(const char *filename, int i, int seed, unsigned num_loops,
-		     unsigned start, int ntdb_flags)
-{
-	struct sigaction act = { .sa_sigaction = segv_handler,
-				 .sa_flags = SA_SIGINFO };
-	sigaction(11, &act, NULL);
-
-	db = ntdb_open(filename, ntdb_flags, O_RDWR | O_CREAT, 0600,
-		      &log_attr);
-	if (!db) {
-		fprintf(stderr, "%u:%s:%s\n", (unsigned int)getpid(), filename,
-			"db open failed");
-		exit(1);
-	}
-
-#if 0
-	if (i == 0) {
-		printf("pid %u\n", (unsigned int)getpid());
-		sleep(9);
-	} else
-		sleep(10);
-#endif
-
-	srand(seed + i);
-	srandom(seed + i);
-
-	/* Set global, then we're ready to handle being killed. */
-	loopnum = start;
-	signal(SIGUSR1, send_count_and_suicide);
-
-	for (;loopnum<num_loops && error_count == 0;loopnum++) {
-		addrec_db();
-	}
-
-	if (error_count == 0) {
-		enum NTDB_ERROR e;
-
-		ntdb_traverse(db, NULL, NULL);
-#if TRANSACTION_PROB
-		if (always_transaction) {
-			while (in_transaction) {
-				ntdb_transaction_cancel(db);
-				in_transaction--;
-			}
-			e = ntdb_transaction_start(db);
-			if (e) {
-				warn_on_err(e, db,
-					    "ntdb_transaction_start failed");
-				exit(1);
-			}
-		}
-#endif
-		ntdb_traverse(db, traverse_fn, NULL);
-		ntdb_traverse(db, traverse_fn, NULL);
-
-#if TRANSACTION_PROB
-		if (always_transaction) {
-			e = ntdb_transaction_commit(db);
-			warn_on_err(e, db, "ntdb_transaction_commit failed");
-		}
-#endif
-	}
-
-	ntdb_close(db);
-
-	return (error_count < 100 ? error_count : 100);
-}
-
-static char *test_path(const char *filename)
-{
-	const char *prefix = getenv("TEST_DATA_PREFIX");
-
-	if (prefix) {
-		char *path = NULL;
-		int ret;
-
-		ret = asprintf(&path, "%s/%s", prefix, filename);
-		if (ret == -1) {
-			return NULL;
-		}
-		return path;
-	}
-
-	return strdup(filename);
-}
-
-int main(int argc, char * const *argv)
-{
-	int i, seed = -1;
-	int num_loops = 5000;
-	int num_procs = 3;
-	int c, pfds[2];
-	extern char *optarg;
-	pid_t *pids;
-	int kill_random = 0;
-	int *done;
-	int ntdb_flags = NTDB_DEFAULT;
-	char *test_ntdb;
-	enum NTDB_ERROR e;
-
-	log_attr.base.attr = NTDB_ATTRIBUTE_LOG;
-	log_attr.base.next = &seed_attr;
-	log_attr.log.fn = ntdb_log;
-	seed_attr.base.attr = NTDB_ATTRIBUTE_SEED;
-	seed_attr.base.next = &hsize_attr;
-	hsize_attr.base.attr = NTDB_ATTRIBUTE_HASHSIZE;
-	hsize_attr.base.next = NULL;
-	hsize_attr.hashsize.size = 2; /* stress it by default. */
-
-	while ((c = getopt(argc, argv, "n:l:s:thkSH:")) != -1) {
-		switch (c) {
-		case 'n':
-			num_procs = strtol(optarg, NULL, 0);
-			break;
-		case 'l':
-			num_loops = strtol(optarg, NULL, 0);
-			break;
-		case 's':
-			seed = strtol(optarg, NULL, 0);
-			break;
-		case 'S':
-			ntdb_flags = NTDB_NOSYNC;
-			break;
-		case 't':
-#if TRANSACTION_PROB
-			always_transaction = 1;
-#else
-			fprintf(stderr, "Transactions not supported\n");
-			usage();
-#endif
-			break;
-		case 'k':
-			kill_random = 1;
-			break;
-		case 'H':
-			hsize_attr.hashsize.size = strtol(optarg, NULL, 0);
-			break;
-		default:
-			usage();
-		}
-	}
-
-	test_ntdb = test_path("torture.ntdb");
-
-	unlink(test_ntdb);
-
-	if (seed == -1) {
-		seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
-	}
-	seed_attr.seed.seed = (((uint64_t)seed) << 32) | seed;
-
-	if (num_procs == 1 && !kill_random) {
-		/* Don't fork for this case, makes debugging easier. */
-		error_count = run_child(test_ntdb, 0, seed, num_loops, 0,
-					ntdb_flags);
-		goto done;
-	}
-
-	pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
-	done = (int *)calloc(sizeof(int), num_procs);
-
-	if (pipe(pfds) != 0) {
-		perror("Creating pipe");
-		exit(1);
-	}
-	count_pipe = pfds[1];
-
-	for (i=0;i<num_procs;i++) {
-		if ((pids[i]=fork()) == 0) {
-			close(pfds[0]);
-			if (i == 0) {
-				printf("testing with %d processes, %d loops, seed=%d%s\n",
-				       num_procs, num_loops, seed,
-#if TRANSACTION_PROB
-				       always_transaction ? " (all within transactions)" : ""
-#else
-				       ""
-#endif
-					);
-			}
-			exit(run_child(test_ntdb, i, seed, num_loops, 0,
-				       ntdb_flags));
-		}
-	}
-
-	while (num_procs) {
-		int status, j;
-		pid_t pid;
-
-		if (error_count != 0) {
-			/* try and stop the test on any failure */
-			for (j=0;j<num_procs;j++) {
-				if (pids[j] != 0) {
-					kill(pids[j], SIGTERM);
-				}
-			}
-		}
-
-		pid = waitpid(-1, &status, kill_random ? WNOHANG : 0);
-		if (pid == 0) {
-			struct timespec ts;
-
-			/* Sleep for 1/10 second. */
-			ts.tv_sec = 0;
-			ts.tv_nsec = 100000000;
-			nanosleep(&ts, NULL);
-
-			/* Kill someone. */
-			kill(pids[random() % num_procs], SIGUSR1);
-			continue;
-		}
-
-		if (pid == -1) {
-			perror("failed to wait for child\n");
-			exit(1);
-		}
-
-		for (j=0;j<num_procs;j++) {
-			if (pids[j] == pid) break;
-		}
-		if (j == num_procs) {
-			printf("unknown child %d exited!?\n", (int)pid);
-			exit(1);
-		}
-		if (WIFSIGNALED(status)) {
-			if (WTERMSIG(status) == SIGUSR2
-			    || WTERMSIG(status) == SIGUSR1) {
-				/* SIGUSR2 means they wrote to pipe. */
-				if (WTERMSIG(status) == SIGUSR2) {
-					if (read(pfds[0], &done[j],
-						 sizeof(done[j]))
-					    != sizeof(done[j]))
-						err(1,
-						    "Short read from child?");
-				}
-				pids[j] = fork();
-				if (pids[j] == 0)
-					exit(run_child(test_ntdb, j, seed,
-						       num_loops, done[j],
-						       ntdb_flags));
-				printf("Restarting child %i for %u-%u\n",
-				       j, done[j], num_loops);
-				continue;
-			}
-			printf("child %d exited with signal %d\n",
-			       (int)pid, WTERMSIG(status));
-			error_count++;
-		} else {
-			if (WEXITSTATUS(status) != 0) {
-				printf("child %d exited with status %d\n",
-				       (int)pid, WEXITSTATUS(status));
-				error_count++;
-			}
-		}
-		memmove(&pids[j], &pids[j+1],
-			(num_procs - j - 1)*sizeof(pids[0]));
-		num_procs--;
-	}
-
-	free(pids);
-
-done:
-	if (error_count == 0) {
-		db = ntdb_open(test_ntdb, NTDB_DEFAULT, O_RDWR | O_CREAT,
-			      0600, &log_attr);
-		if (!db) {
-			fprintf(stderr, "%u:%s:%s\n", (unsigned int)getpid(), test_ntdb,
-				"db open failed");
-			exit(1);
-		}
-		e = ntdb_check(db, NULL, NULL);
-		if (e) {
-			warn_on_err(e, db, "db check failed");
-			exit(1);
-		}
-		ntdb_close(db);
-		printf("OK\n");
-	}
-
-	free(test_ntdb);
-	return error_count;
-}