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If pg_test_fsync is interrupted, clean up the temp file.

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Marti Raudsepp, with additional paranoia by me.
This commit is contained in:
Robert Haas
2011-12-09 15:05:48 -05:00
parent 5bcf8ede45
commit ab7d4213f9
1 changed files with 23 additions and 0 deletions
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23
contrib/pg_test_fsync/pg_test_fsync.c
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@@ -9,6 +9,7 @@
#include <sys/time.h> #include <sys/time.h>
#include <time.h> #include <time.h>
#include <unistd.h> #include <unistd.h>
#include <signal.h>
#include "getopt_long.h" #include "getopt_long.h"
#include "access/xlogdefs.h" #include "access/xlogdefs.h"
@@ -29,6 +30,7 @@
static const char *progname; static const char *progname;
static int ops_per_test = 2000; static int ops_per_test = 2000;
static int needs_unlink = 0;
static char full_buf[XLOG_SEG_SIZE], static char full_buf[XLOG_SEG_SIZE],
*buf, *buf,
*filename = FSYNC_FILENAME; *filename = FSYNC_FILENAME;
@@ -44,6 +46,7 @@ static void test_sync(int writes_per_op);
static void test_open_syncs(void); static void test_open_syncs(void);
static void test_open_sync(const char *msg, int writes_size); static void test_open_sync(const char *msg, int writes_size);
static void test_file_descriptor_sync(void); static void test_file_descriptor_sync(void);
static void signal_cleanup(int sig);
#ifdef HAVE_FSYNC_WRITETHROUGH #ifdef HAVE_FSYNC_WRITETHROUGH
static int pg_fsync_writethrough(int fd); static int pg_fsync_writethrough(int fd);
@@ -59,6 +62,14 @@ main(int argc, char *argv[])
handle_args(argc, argv); handle_args(argc, argv);
/* Prevent leaving behind the test file */
signal(SIGINT, signal_cleanup);
signal(SIGTERM, signal_cleanup);
#ifdef SIGHUP
/* Not defined on win32 */
signal(SIGHUP, signal_cleanup);
#endif
prepare_buf(); prepare_buf();
test_open(); test_open();
@@ -167,6 +178,7 @@ test_open(void)
*/ */
if ((tmpfile = open(filename, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR)) == -1) if ((tmpfile = open(filename, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR)) == -1)
die("could not open output file"); die("could not open output file");
needs_unlink = 1;
if (write(tmpfile, full_buf, XLOG_SEG_SIZE) != XLOG_SEG_SIZE) if (write(tmpfile, full_buf, XLOG_SEG_SIZE) != XLOG_SEG_SIZE)
die("write failed"); die("write failed");
@@ -490,6 +502,17 @@ test_non_sync(void)
print_elapse(start_t, stop_t); print_elapse(start_t, stop_t);
} }
static void
signal_cleanup(int signum)
{
/* Delete the file if it exists. Ignore errors */
if (needs_unlink)
unlink(filename);
/* Finish incomplete line on stdout */
puts("");
exit(signum);
}
#ifdef HAVE_FSYNC_WRITETHROUGH #ifdef HAVE_FSYNC_WRITETHROUGH
static int static int