Changeset: 159e9f96a32c for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/159e9f96a32c
Modified Files:
clients/Tests/exports.stable.out
clients/mapiclient/mclient.c
clients/mapilib/mapi.c
common/stream/bs.c
common/stream/bstream.c
common/stream/socket_stream.c
common/stream/stream.c
common/stream/stream.h
common/stream/stream_internal.h
gdk/gdk.h
gdk/gdk_system.h
monetdb5/mal/mal_client.c
monetdb5/mal/mal_errors.h
monetdb5/mal/mal_import.c
monetdb5/mal/mal_interpreter.c
tools/monetdbe/monetdbe.c
Branch: client_interrupts
Log Message:
First version that successfully aborts a query on client interrupt.
diffs (truncated from 671 to 300 lines):
diff --git a/clients/Tests/exports.stable.out b/clients/Tests/exports.stable.out
--- a/clients/Tests/exports.stable.out
+++ b/clients/Tests/exports.stable.out
@@ -1642,6 +1642,7 @@ stream *block_stream(stream *s);
stream *bs_stream(stream *s);
bstream *bstream_create(stream *rs, size_t chunk_size);
void bstream_destroy(bstream *s);
+int bstream_getoob(bstream *s);
ssize_t bstream_next(bstream *s);
ssize_t bstream_read(bstream *s, size_t size);
buffer *buffer_create(size_t size);
@@ -1681,12 +1682,14 @@ int mnstr_fsetpos(stream *restrict s, fp
int mnstr_fsync(stream *s);
buffer *mnstr_get_buffer(stream *s);
bool mnstr_get_swapbytes(const stream *s);
+int mnstr_getoob(const stream *s);
int mnstr_init(void);
int mnstr_isalive(const stream *s);
bool mnstr_isbinary(const stream *s);
const char *mnstr_name(const stream *s);
const char *mnstr_peek_error(const stream *s);
int mnstr_printf(stream *restrict s, _In_z_ _Printf_format_string_ const char
*restrict format, ...) __attribute__((__format__(__printf__, 2, 3)));
+int mnstr_putoob(const stream *s, char val);
ssize_t mnstr_read(stream *restrict s, void *restrict buf, size_t elmsize,
size_t cnt);
int mnstr_readBte(stream *restrict s, int8_t *restrict val);
int mnstr_readBteArray(stream *restrict s, int8_t *restrict val, size_t cnt);
diff --git a/clients/mapiclient/mclient.c b/clients/mapiclient/mclient.c
--- a/clients/mapiclient/mclient.c
+++ b/clients/mapiclient/mclient.c
@@ -1414,7 +1414,7 @@ SQLpagemove(int *len, int fields, int *p
SQLseparator(len, fields, '-');
}
-static bool stopped;
+static volatile sig_atomic_t stopped;
static void
renderer_sigint_handler(int signum)
diff --git a/clients/mapilib/mapi.c b/clients/mapilib/mapi.c
--- a/clients/mapilib/mapi.c
+++ b/clients/mapilib/mapi.c
@@ -2698,7 +2698,14 @@ read_line(Mapi mid)
/* fetch one more block */
if (mid->trace)
printf("fetch next block: start at:%d\n", mid->blk.end);
- len = mnstr_read(mid->from, mid->blk.buf + mid->blk.end, 1,
BLOCK);
+ for (;;) {
+ len = mnstr_read(mid->from, mid->blk.buf +
mid->blk.end, 1, BLOCK);
+ if (len == -1 && mnstr_errnr(mid->from) ==
MNSTR_INTERRUPT) {
+ mnstr_clearerr(mid->from);
+ mnstr_putoob(mid->to, 1);
+ } else
+ break;
+ }
check_stream(mid, mid->from, "Connection terminated during read
line", (mid->blk.eos = true, (char *) 0));
mapi_log_data(mid, "RECV", mid->blk.buf + mid->blk.end, len);
mid->blk.buf[mid->blk.end + len] = 0;
@@ -3360,9 +3367,8 @@ read_file(MapiHdl hdl, uint64_t off, cha
static void
compute_sigint_handler(int signum)
{
- if (signum == SIGINT) {
- printf("Caught sigint while computing. Ignoring\n");
- }
+ /* do nothing, but we do need to interrupt the */
+ (void) signum;
}
/* Read ahead and cache data read. Depending on the second argument,
@@ -3384,9 +3390,12 @@ read_into_cache(MapiHdl hdl, int lookahe
char *line;
Mapi mid;
struct MapiResultSet *result;
- void (*prev_handler)(int);
-
- prev_handler = NULL;
+#ifdef HAVE_SIGACTION
+ struct sigaction osa = {0};
+#else
+ void (*prev_handler)(int) = NULL;
+#endif
+
mid = hdl->mid;
assert(mid->active == hdl);
if (hdl->needmore) {
@@ -3397,17 +3406,35 @@ read_into_cache(MapiHdl hdl, int lookahe
if ((result = hdl->active) == NULL)
result = hdl->result; /* may also be NULL */
+#ifdef HAVE_SIGACTION
+ struct sigaction sa;
+ (void) sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ sa.sa_handler = compute_sigint_handler;
+ if (sigaction(SIGINT, &sa, &osa) == -1) {
+ perror("mapi_execute_internal: could not install signal
handler");
+ (void) sigemptyset(&osa.sa_mask);
+ osa.sa_flags = 0;
+ osa.sa_handler = SIG_DFL;
+ }
+#else
prev_handler = signal(SIGINT, compute_sigint_handler);
if (prev_handler == SIG_ERR) {
perror("mapi_execute_internal: could not install signal
handler");
prev_handler = NULL;
}
+#endif
for (;;) {
line = read_line(mid);
if (line == NULL) {
+#ifdef HAVE_SIGACTION
+ if (sigaction(SIGINT, &osa, NULL) == -1)
+ perror("mapi_execute_internal: Could not
restore previous handler");
+#else
if (prev_handler && signal(SIGINT, prev_handler) ==
SIG_ERR)
perror("mapi_execute_internal: Could not
restore previous handler");
+#endif
if (mid->from && mnstr_eof(mid->from)) {
return mapi_setError(mid, "unexpected end of
file", __func__, MERROR);
}
@@ -3467,8 +3494,13 @@ read_into_cache(MapiHdl hdl, int lookahe
}
continue;
}
+#ifdef HAVE_SIGACTION
+ if (sigaction(SIGINT, &osa, NULL) == -1)
+ perror("mapi_execute_internal: Could not
restore previous handler");
+#else
if (prev_handler && signal(SIGINT, prev_handler) ==
SIG_ERR)
perror("mapi_execute_internal: Could not
restore previous handler");
+#endif
return mid->error;
case '!':
/* start a new result set if we don't have one
@@ -3505,8 +3537,13 @@ read_into_cache(MapiHdl hdl, int lookahe
(result->querytype == -1 /* unknown (not SQL) */ ||
result->querytype == Q_TABLE ||
result->querytype == Q_UPDATE)) {
+#ifdef HAVE_SIGACTION
+ if (sigaction(SIGINT, &osa, NULL) == -1)
+ perror("mapi_execute_internal: Could
not restore previous handler");
+#else
if (prev_handler && signal(SIGINT,
prev_handler) == SIG_ERR)
perror("mapi_execute_internal: Could
not restore previous handler");
+#endif
return mid->error;
}
break;
diff --git a/common/stream/bs.c b/common/stream/bs.c
--- a/common/stream/bs.c
+++ b/common/stream/bs.c
@@ -372,6 +372,7 @@ block_stream(stream *s)
ns->write = bs_write;
ns->close = bs_close;
ns->destroy = bs_destroy;
+ ns->clrerr = bs_clrerr;
ns->stream_data.p = (void *) b;
return ns;
diff --git a/common/stream/bstream.c b/common/stream/bstream.c
--- a/common/stream/bstream.c
+++ b/common/stream/bstream.c
@@ -28,19 +28,19 @@ bstream_create(stream *s, size_t size)
return NULL;
if ((b = malloc(sizeof(*b))) == NULL)
return NULL;
+ if (size == 0)
+ size = BUFSIZ;
*b = (bstream) {
.mode = size,
.s = s,
.eof = false,
+ .size = size,
+ .buf = malloc(size + 1 + 1),
};
- if (size == 0)
- size = BUFSIZ;
- b->buf = malloc(size + 1 + 1);
if (b->buf == NULL) {
free(b);
return NULL;
}
- b->size = size;
return b;
}
@@ -200,3 +200,10 @@ bstream_destroy(bstream *s)
}
}
+int
+bstream_getoob(bstream *s)
+{
+ if (s && s->s)
+ return mnstr_getoob(s->s);
+ return 0;
+}
diff --git a/common/stream/socket_stream.c b/common/stream/socket_stream.c
--- a/common/stream/socket_stream.c
+++ b/common/stream/socket_stream.c
@@ -181,10 +181,8 @@ socket_read(stream *restrict s, void *re
}
#else
nr = read(s->stream_data.s, buf, size);
- if (nr == -1 && errno == EINTR)
- continue;
if (nr == -1) {
- mnstr_set_error_errno(s, MNSTR_READ_ERROR, NULL);
+ mnstr_set_error_errno(s, errno == EINTR ?
MNSTR_INTERRUPT : MNSTR_READ_ERROR, NULL);
return -1;
}
#endif
@@ -305,6 +303,33 @@ socket_isalive(const stream *s)
#endif
}
+static int
+socket_getoob(const stream *s)
+{
+ SOCKET fd = s->stream_data.s;
+ struct pollfd pfd = (struct pollfd) {
+ .fd = fd,
+ .events = POLLPRI,
+ };
+ if (poll(&pfd, 1, 0) > 0) {
+ char b = 0;
+ recv(fd, &b, 1, MSG_OOB);
+ return b;
+ }
+ return 0;
+}
+
+static int
+socket_putoob(const stream *s, char val)
+{
+ SOCKET fd = s->stream_data.s;
+ if (send(fd, &val, 1, MSG_OOB) == -1) {
+ perror("send OOB");
+ return -1;
+ }
+ return 0;
+}
+
static stream *
socket_open(SOCKET sock, const char *name)
{
@@ -323,6 +348,8 @@ socket_open(SOCKET sock, const char *nam
s->stream_data.s = sock;
s->update_timeout = socket_update_timeout;
s->isalive = socket_isalive;
+ s->getoob = socket_getoob;
+ s->putoob = socket_putoob;
errno = 0;
#ifdef _MSC_VER
diff --git a/common/stream/stream.c b/common/stream/stream.c
--- a/common/stream/stream.c
+++ b/common/stream/stream.c
@@ -503,6 +503,8 @@ mnstr_error_kind_description(mnstr_error
return "error reading";
case MNSTR_WRITE_ERROR:
return "error writing";
+ case MNSTR_INTERRUPT:
+ return "interrupted";
case MNSTR_TIMEOUT:
return "timeout";
case MNSTR_UNEXPECTED_EOF:
@@ -593,6 +595,22 @@ mnstr_isalive(const stream *s)
return 1;
}
+int
+mnstr_getoob(const stream *s)
+{
+ if (s->getoob)
+ return s->getoob(s);
+ return 0;
+}
+
+int
+mnstr_putoob(const stream *s, char val)
+{
+ if (s->putoob)
+ return s->putoob(s, val);
+ return 0;
+}
+
bool
mnstr_eof(const stream *s)
@@ -830,6 +848,20 @@ wrapper_isalive(const stream *s)
}
+static int
+wrapper_getoob(const stream *s)
+{
+ return s->inner->getoob(s->inner);
+}
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