[SCM] Samba Shared Repository - branch master updated
Andreas Schneider
asn at samba.org
Mon Apr 11 17:52:01 UTC 2022
The branch, master has been updated
via a20d41accdc tevent:tests: Test queue entry tags
via f681ef2ff48 tevent: Add tevent queue tracing support
via dfbb381839e tevent: Use internally an empty trigger function for blocker requests
via ddc8f4f4d84 tevent: Move the code below the trigger check
via 3198b94a2d0 tevent: Fix trailing whitespaces
from be23ffbc5d6 examples: Update winbindd.stp and generate script
https://git.samba.org/?p=samba.git;a=shortlog;h=master
- Log -----------------------------------------------------------------
commit a20d41accdc999262da94531627c7e1e8ec7677f
Author: Pavel Filipenský <pfilipen at redhat.com>
Date: Wed Mar 16 09:11:25 2022 +0100
tevent:tests: Test queue entry tags
Signed-off-by: Pavel Filipenský <pfilipen at redhat.com>
Reviewed-by: Stefan Metzmacher <metze at samba.org>
Reviewed-by: Andreas Schneider <asn at samba.org>
Autobuild-User(master): Andreas Schneider <asn at cryptomilk.org>
Autobuild-Date(master): Mon Apr 11 17:51:08 UTC 2022 on sn-devel-184
commit f681ef2ff48b5b48fd1f0a2075184689059cb9a1
Author: Pavel Filipenský <pfilipen at redhat.com>
Date: Mon Mar 14 11:22:15 2022 +0100
tevent: Add tevent queue tracing support
Signed-off-by: Pavel Filipenský <pfilipen at redhat.com>
Reviewed-by: Stefan Metzmacher <metze at samba.org>
Reviewed-by: Andreas Schneider <asn at samba.org>
commit dfbb381839e9ea179cb53791606d6be08ebac806
Author: Pavel Filipenský <pfilipen at redhat.com>
Date: Wed Mar 23 14:50:57 2022 +0100
tevent: Use internally an empty trigger function for blocker requests
This avoids special magic, but keeps the same external behavior.
It makes the following changes easier to understand.
Signed-off-by: Pavel Filipenský <pfilipen at redhat.com>
Reviewed-by: Stefan Metzmacher <metze at samba.org>
Reviewed-by: Andreas Schneider <asn at samba.org>
commit ddc8f4f4d84ca40274463a40e5c16f0542337499
Author: Pavel Filipenský <pfilipen at redhat.com>
Date: Wed Mar 30 15:59:51 2022 +0200
tevent: Move the code below the trigger check
This makes the next commit smaller.
Signed-off-by: Pavel Filipenský <pfilipen at redhat.com>
Reviewed-by: Stefan Metzmacher <metze at samba.org>
Reviewed-by: Andreas Schneider <asn at samba.org>
commit 3198b94a2d0b62251fc2d497201a88ac3dbfb31f
Author: Pavel Filipenský <pfilipen at redhat.com>
Date: Mon Mar 14 11:16:58 2022 +0100
tevent: Fix trailing whitespaces
Signed-off-by: Pavel Filipenský <pfilipen at redhat.com>
Reviewed-by: Stefan Metzmacher <metze at samba.org>
Reviewed-by: Andreas Schneider <asn at samba.org>
-----------------------------------------------------------------------
Summary of changes:
.../ABI/{tevent-0.11.0.sigs => tevent-0.12.0.sigs} | 5 +
lib/tevent/tests/test_tevent_tag.c | 41 ++++
lib/tevent/tests/test_tevent_trace.c | 259 +++++++++++++++++++++
lib/tevent/tevent.h | 51 +++-
lib/tevent/tevent_debug.c | 32 +++
lib/tevent/tevent_internal.h | 13 +-
lib/tevent/tevent_queue.c | 46 +++-
lib/tevent/wscript | 2 +-
8 files changed, 438 insertions(+), 11 deletions(-)
copy lib/tevent/ABI/{tevent-0.11.0.sigs => tevent-0.12.0.sigs} (96%)
Changeset truncated at 500 lines:
diff --git a/lib/tevent/ABI/tevent-0.11.0.sigs b/lib/tevent/ABI/tevent-0.12.0.sigs
similarity index 96%
copy from lib/tevent/ABI/tevent-0.11.0.sigs
copy to lib/tevent/ABI/tevent-0.12.0.sigs
index e64007e0516..22a8ce33413 100644
--- a/lib/tevent/ABI/tevent-0.11.0.sigs
+++ b/lib/tevent/ABI/tevent-0.12.0.sigs
@@ -62,10 +62,13 @@ tevent_fd_set_tag: void (struct tevent_fd *, uint64_t)
tevent_get_trace_callback: void (struct tevent_context *, tevent_trace_callback_t *, void *)
tevent_get_trace_fd_callback: void (struct tevent_context *, tevent_trace_fd_callback_t *, void *)
tevent_get_trace_immediate_callback: void (struct tevent_context *, tevent_trace_immediate_callback_t *, void *)
+tevent_get_trace_queue_callback: void (struct tevent_context *, tevent_trace_queue_callback_t *, void *)
tevent_get_trace_signal_callback: void (struct tevent_context *, tevent_trace_signal_callback_t *, void *)
tevent_get_trace_timer_callback: void (struct tevent_context *, tevent_trace_timer_callback_t *, void *)
tevent_immediate_get_tag: uint64_t (const struct tevent_immediate *)
tevent_immediate_set_tag: void (struct tevent_immediate *, uint64_t)
+tevent_queue_entry_get_tag: uint64_t (const struct tevent_queue_entry *)
+tevent_queue_entry_set_tag: void (struct tevent_queue_entry *, uint64_t)
tevent_loop_allow_nesting: void (struct tevent_context *)
tevent_loop_set_nesting_hook: void (struct tevent_context *, tevent_nesting_hook, void *)
tevent_num_signals: size_t (void)
@@ -118,6 +121,7 @@ tevent_set_default_backend: void (const char *)
tevent_set_trace_callback: void (struct tevent_context *, tevent_trace_callback_t, void *)
tevent_set_trace_fd_callback: void (struct tevent_context *, tevent_trace_fd_callback_t, void *)
tevent_set_trace_immediate_callback: void (struct tevent_context *, tevent_trace_immediate_callback_t, void *)
+tevent_set_trace_queue_callback: void (struct tevent_context *, tevent_trace_queue_callback_t, void *)
tevent_set_trace_signal_callback: void (struct tevent_context *, tevent_trace_signal_callback_t, void *)
tevent_set_trace_timer_callback: void (struct tevent_context *, tevent_trace_timer_callback_t, void *)
tevent_signal_get_tag: uint64_t (const struct tevent_signal *)
@@ -138,6 +142,7 @@ tevent_timeval_until: struct timeval (const struct timeval *, const struct timev
tevent_timeval_zero: struct timeval (void)
tevent_trace_fd_callback: void (struct tevent_context *, struct tevent_fd *, enum tevent_event_trace_point)
tevent_trace_immediate_callback: void (struct tevent_context *, struct tevent_immediate *, enum tevent_event_trace_point)
+tevent_trace_queue_callback: void (struct tevent_context *, struct tevent_queue_entry *, enum tevent_event_trace_point)
tevent_trace_point_callback: void (struct tevent_context *, enum tevent_trace_point)
tevent_trace_signal_callback: void (struct tevent_context *, struct tevent_signal *, enum tevent_event_trace_point)
tevent_trace_timer_callback: void (struct tevent_context *, struct tevent_timer *, enum tevent_event_trace_point)
diff --git a/lib/tevent/tests/test_tevent_tag.c b/lib/tevent/tests/test_tevent_tag.c
index ce64d3c396e..2ae0e386d40 100644
--- a/lib/tevent/tests/test_tevent_tag.c
+++ b/lib/tevent/tests/test_tevent_tag.c
@@ -33,6 +33,12 @@
#include <tevent.h>
#include <cmocka.h>
+static void queue_trigger(struct tevent_req *req, void *private_data)
+{
+ /* Dummy handler. Just return. */
+ return;
+}
+
static void fd_handler(struct tevent_context *ev,
struct tevent_fd *fde,
uint16_t flags,
@@ -197,6 +203,40 @@ static void test_immediate_tag(void **state)
TALLOC_FREE(im);
}
+static void test_queue_entry_tag(void **state)
+{
+ struct tevent_context *ev = (struct tevent_context *)(*state);
+ struct tevent_queue *q;
+ struct tevent_queue_entry *e1, *e2;
+ struct tevent_req *r1, *r2;
+ int *s1, *s2;
+ uint64_t tag;
+
+ q = tevent_queue_create(ev, "test_queue");
+ assert_non_null(q);
+
+ r1 = tevent_req_create(ev, &s1, int);
+ r2 = tevent_req_create(ev, &s2, int);
+ e1 = tevent_queue_add_entry(q, ev, r1, queue_trigger, NULL);
+ e2 = tevent_queue_add_entry(q, ev, r2, queue_trigger, NULL);
+
+ tag = tevent_queue_entry_get_tag(e1);
+ assert_int_equal(0, tag);
+ tag = tevent_queue_entry_get_tag(e2);
+ assert_int_equal(0, tag);
+
+ tevent_queue_entry_set_tag(e1, 1);
+ tevent_queue_entry_set_tag(e2, 2);
+
+ tag = tevent_queue_entry_get_tag(e1);
+ assert_int_equal(1, tag);
+
+ tag = tevent_queue_entry_get_tag(e2);
+ assert_int_equal(2, tag);
+
+ TALLOC_FREE(q);
+}
+
int main(int argc, char **argv)
{
const struct CMUnitTest tests[] = {
@@ -204,6 +244,7 @@ int main(int argc, char **argv)
cmocka_unit_test_setup_teardown(test_timer_tag, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_signal_tag, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_immediate_tag, test_setup, test_teardown),
+ cmocka_unit_test_setup_teardown(test_queue_entry_tag, test_setup, test_teardown),
};
cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
diff --git a/lib/tevent/tests/test_tevent_trace.c b/lib/tevent/tests/test_tevent_trace.c
index e9d26f9ceba..10e1ee00693 100644
--- a/lib/tevent/tests/test_tevent_trace.c
+++ b/lib/tevent/tests/test_tevent_trace.c
@@ -280,6 +280,28 @@ static void trace_event_cb(void *event,
}
}
+static void trace_event_cb1(void *event,
+ enum tevent_event_trace_point point,
+ void *private_data)
+{
+ struct test_ctx *tctx = (struct test_ctx *)private_data;
+ uint64_t tag;
+
+ switch (point) {
+ case TEVENT_EVENT_TRACE_ATTACH:
+ tctx->attach = true;
+ tag = ++tctx->current_tag;
+ tctx->set_tag(event, tag);
+ break;
+ case TEVENT_EVENT_TRACE_BEFORE_HANDLER:
+ tctx->before_handler = true;
+ break;
+ case TEVENT_EVENT_TRACE_DETACH:
+ tctx->detach = true;
+ break;
+ }
+}
+
static int test_setup(void **state)
{
struct test_ctx *tctx;
@@ -371,6 +393,22 @@ static void immediate_set_tag(void *_event, uint64_t tag)
tevent_immediate_set_tag(event, tag);
}
+static uint64_t queue_entry_get_tag(const void *_event)
+{
+ const struct tevent_queue_entry *event =
+ (const struct tevent_queue_entry *)_event;
+
+ return tevent_queue_entry_get_tag(event);
+}
+
+static void queue_entry_set_tag(void *_event, uint64_t tag)
+{
+ struct tevent_queue_entry *event =
+ (struct tevent_queue_entry *)_event;
+
+ tevent_queue_entry_set_tag(event, tag);
+}
+
static void test_trace_event_fd__loop(void **state)
{
struct test_ctx *tctx = (struct test_ctx *)(*state);
@@ -949,6 +987,203 @@ static void test_trace_event_immediate__reschedule(void **state)
assert_true(tctx->detach);
}
+struct dummy_request_state
+{
+ int i;
+ struct tevent_queue_entry *e;
+};
+
+static void queue_trigger(struct tevent_req *req, void *private_data)
+{
+ struct test_ctx *tctx = (struct test_ctx *)private_data;
+ struct dummy_request_state *state = tevent_req_data(
+ req, struct dummy_request_state);
+
+ tctx->handler_called = true;
+ assert_int_equal(tevent_queue_entry_get_tag(state->e), state->i);
+ TALLOC_FREE(req);
+
+ return;
+}
+
+static void test_trace_queue__loop(void **state)
+{
+ struct test_ctx *tctx = (struct test_ctx *)(*state);
+ struct tevent_queue *qa, *qb;
+ struct tevent_req *r1, *r2, *r3, *r4, *r5;
+ struct dummy_request_state *ds1, *ds2, *ds3, *ds4, *ds5;
+
+ tevent_set_trace_queue_callback(
+ tctx->ev,
+ (tevent_trace_queue_callback_t)trace_event_cb1,
+ tctx);
+ tctx->get_tag = queue_entry_get_tag;
+ tctx->set_tag = queue_entry_set_tag;
+
+ qa = tevent_queue_create(tctx->ev, "test_queue A");
+ assert_non_null(qa);
+ qb = tevent_queue_create(tctx->ev, "test_queue B");
+ assert_non_null(qb);
+
+ r1 = tevent_req_create(tctx->ev, &ds1, struct dummy_request_state);
+ ds1->e = tevent_queue_add_entry(qa,
+ tctx->ev,
+ r1,
+ queue_trigger,
+ *state);
+ ds1->i = tctx->current_tag;
+ assert_int_equal(ds1->i, 1);
+
+ r2 = tevent_req_create(tctx->ev, &ds2, struct dummy_request_state);
+ ds2->e = tevent_queue_add_entry(qa,
+ tctx->ev,
+ r2,
+ queue_trigger,
+ *state);
+ ds2->i = tctx->current_tag;
+ assert_int_equal(ds2->i, 2);
+
+ r3 = tevent_req_create(tctx->ev, &ds3, struct dummy_request_state);
+ ds3->e = tevent_queue_add_entry(qb,
+ tctx->ev,
+ r3,
+ queue_trigger,
+ *state);
+ ds3->i = tctx->current_tag;
+ assert_int_equal(ds3->i, 3);
+
+ r4 = tevent_req_create(tctx->ev, &ds4, struct dummy_request_state);
+ ds4->e = tevent_queue_add_entry(qb,
+ tctx->ev,
+ r4,
+ queue_trigger,
+ *state);
+ ds4->i = tctx->current_tag;
+ assert_int_equal(ds4->i, 4);
+
+ r5 = tevent_req_create(tctx->ev, &ds5, struct dummy_request_state);
+ ds5->e = tevent_queue_add_entry(qa,
+ tctx->ev,
+ r5,
+ queue_trigger,
+ *state);
+ ds5->i = tctx->current_tag;
+ assert_int_equal(ds5->i, 5);
+
+ tevent_loop_once(tctx->ev);
+ tevent_loop_once(tctx->ev);
+ tevent_loop_once(tctx->ev);
+ tevent_loop_once(tctx->ev);
+ tevent_loop_once(tctx->ev);
+}
+
+static void reset_tctx(struct test_ctx *tctx)
+{
+ tctx->attach = false;
+ tctx->before_handler = false;
+ tctx->handler_called = false;
+ tctx->detach = false;
+}
+
+static void test_trace_queue__extra(void **state)
+{
+ struct test_ctx *tctx = (struct test_ctx *)(*state);
+ struct tevent_queue *qa;
+ struct tevent_req *r1, *r2, *r3;
+ struct dummy_request_state *ds1, *ds2, *ds3;
+
+ tevent_set_trace_queue_callback(
+ tctx->ev,
+ (tevent_trace_queue_callback_t)trace_event_cb1,
+ tctx);
+ tctx->get_tag = queue_entry_get_tag;
+ tctx->set_tag = queue_entry_set_tag;
+
+ qa = tevent_queue_create(tctx->ev, "test_queue A");
+ assert_non_null(qa);
+
+ /*
+ * r1 - this tests optimize_empty - request is triggered immediately,
+ * (and not even scheduled to tevent_context). The TALLOC_FREE() called
+ * from queue_trigger removes the request/queue_entry from the queue qa.
+ * So qa is empty
+ */
+ r1 = tevent_req_create(tctx->ev, &ds1, struct dummy_request_state);
+ ds1->e = tevent_queue_add_optimize_empty(qa,
+ tctx->ev,
+ r1,
+ queue_trigger,
+ *state);
+ assert_true(tctx->attach);
+ assert_true(tctx->before_handler);
+ assert_true(tctx->handler_called);
+ assert_true(tctx->detach);
+ assert_int_equal(tevent_queue_length(qa), 0);
+
+ reset_tctx(tctx);
+
+ /*
+ * Test a blocker request r2 - the trigger function is NULL.
+ */
+ r2 = tevent_req_create(tctx->ev, &ds2, struct dummy_request_state);
+ ds2->e = tevent_queue_add_entry(qa, tctx->ev, r2, NULL, *state);
+ ds2->i = tctx->current_tag;
+ assert_true(tctx->attach);
+ assert_false(tctx->before_handler);
+ assert_false(tctx->handler_called);
+ assert_false(tctx->detach);
+ assert_int_equal(tevent_queue_length(qa), 1);
+
+ /*
+ * This runs the tevent_queue_noop_trigger().
+ * A blocker r2 is still on the queue head, with triggered==true
+ */
+ tevent_loop_once(tctx->ev);
+
+ assert_true(tctx->attach);
+ assert_true(tctx->before_handler);
+ assert_false(tctx->handler_called);
+ /* tevent_queue_noop_trigger() is a noop. Does not set handler_called */
+ assert_false(tctx->detach);
+ assert_int_equal(tevent_queue_length(qa), 1);
+
+ /*
+ * Add a normal request r3. It will be blocked by r2.
+ */
+ r3 = tevent_req_create(tctx->ev, &ds3, struct dummy_request_state);
+ ds3->e = tevent_queue_add_entry(qa,
+ tctx->ev,
+ r3,
+ queue_trigger,
+ *state);
+ ds3->i = tctx->current_tag;
+ assert_true(tctx->attach);
+ assert_true(tctx->before_handler);
+ assert_false(tctx->handler_called);
+ assert_false(tctx->detach);
+ assert_int_equal(tevent_queue_length(qa), 2);
+
+ /*
+ * Remove the blocker r2.
+ */
+ TALLOC_FREE(r2);
+ assert_true(tctx->attach);
+ assert_true(tctx->before_handler);
+ assert_false(tctx->handler_called);
+ assert_true(tctx->detach);
+ assert_int_equal(tevent_queue_length(qa), 1);
+
+ reset_tctx(tctx);
+
+ /* Process r3 */
+ tevent_loop_once(tctx->ev);
+
+ assert_false(tctx->attach);
+ assert_true(tctx->before_handler);
+ assert_true(tctx->handler_called);
+ assert_true(tctx->detach);
+}
+
static void test_get_set_trace_fd_callback(void **state)
{
struct test_ctx *tctx = (struct test_ctx *)(*state);
@@ -1033,6 +1268,27 @@ static void test_get_set_trace_immediate_callback(void **state)
assert_null(pvt);
}
+static void test_get_set_trace_queue_callback(void **state)
+{
+ struct test_ctx *tctx = (struct test_ctx *)(*state);
+ tevent_trace_queue_callback_t cb;
+ void *pvt;
+
+ tevent_get_trace_queue_callback(tctx->ev, &cb, &pvt);
+ assert_null(cb);
+ assert_null(pvt);
+
+ tevent_set_trace_queue_callback(tctx->ev, (tevent_trace_queue_callback_t)trace_event_cb, tctx);
+ tevent_get_trace_queue_callback(tctx->ev, &cb, &pvt);
+ assert_ptr_equal(cb, trace_event_cb);
+ assert_ptr_equal(pvt, tctx);
+
+ tevent_set_trace_queue_callback(tctx->ev, NULL, NULL);
+ tevent_get_trace_queue_callback(tctx->ev, &cb, &pvt);
+ assert_null(cb);
+ assert_null(pvt);
+}
+
int main(int argc, char **argv)
{
const struct CMUnitTest tests[] = {
@@ -1053,10 +1309,13 @@ int main(int argc, char **argv)
cmocka_unit_test_setup_teardown(test_trace_event_immediate__free, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_trace_event_immediate__free_in_handler, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_trace_event_immediate__reschedule, test_setup, test_teardown),
+ cmocka_unit_test_setup_teardown(test_trace_queue__loop, test_setup, test_teardown),
+ cmocka_unit_test_setup_teardown(test_trace_queue__extra, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_get_set_trace_fd_callback, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_get_set_trace_timer_callback, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_get_set_trace_signal_callback, test_setup, test_teardown),
cmocka_unit_test_setup_teardown(test_get_set_trace_immediate_callback, test_setup, test_teardown),
+ cmocka_unit_test_setup_teardown(test_get_set_trace_queue_callback, test_setup, test_teardown),
};
cmocka_set_message_output(CM_OUTPUT_SUBUNIT);
diff --git a/lib/tevent/tevent.h b/lib/tevent/tevent.h
index 2d1863d7c6e..1c337adbf74 100644
--- a/lib/tevent/tevent.h
+++ b/lib/tevent/tevent.h
@@ -1,4 +1,4 @@
-/*
+/*
Unix SMB/CIFS implementation.
generalised event loop handling
@@ -1931,6 +1931,55 @@ struct timeval tevent_timeval_current_ofs(uint32_t secs, uint32_t usecs);
struct tevent_queue;
struct tevent_queue_entry;
+/**
+ * @brief Associate a custom tag with the queue entry.
+ *
+ * This tag can be then retrieved with tevent_queue_entry_get_tag()
+ *
+ * @param[in] qe The queue entry.
+ *
+ * @param[in] tag Custom tag.
+ */
+void tevent_queue_entry_set_tag(struct tevent_queue_entry *qe, uint64_t tag);
+
+/**
+ * @brief Get custom queue entry tag.
+ */
+uint64_t tevent_queue_entry_get_tag(const struct tevent_queue_entry *qe);
+
+typedef void (*tevent_trace_queue_callback_t)(struct tevent_queue_entry *qe,
+ enum tevent_event_trace_point,
+ void *private_data);
+
+/**
+ * Register a callback to be called at certain trace points of queue.
+ *
+ * @param[in] ev Event context
+ * @param[in] cb Trace callback
+ * @param[in] private_data Data to be passed to callback
+ *
+ * @note The callback will be called at trace points defined by
+ * tevent_event_trace_point. Call with NULL to reset.
+ */
+void tevent_set_trace_queue_callback(struct tevent_context *ev,
+ tevent_trace_queue_callback_t cb,
+ void *private_data);
+
+/**
+ * Retrieve the current trace callback of queue.
+ *
+ * @param[in] ev Event context
+ * @param[out] cb Registered trace callback
+ * @param[out] p_private_data Registered data to be passed to callback
+ *
+ * @note This can be used to allow one component that wants to
+ * register a callback to respect the callback that another component
+ * has already registered.
+ */
+void tevent_get_trace_queue_callback(struct tevent_context *ev,
+ tevent_trace_queue_callback_t *cb,
+ void *p_private_data);
+
#ifdef DOXYGEN
/**
* @brief Create and start a tevent queue.
diff --git a/lib/tevent/tevent_debug.c b/lib/tevent/tevent_debug.c
index 44f76f789ca..6b8f2d5100b 100644
--- a/lib/tevent/tevent_debug.c
+++ b/lib/tevent/tevent_debug.c
@@ -260,3 +260,35 @@ void tevent_trace_immediate_callback(struct tevent_context *ev,
ev->tracing.im.callback(im, tp, ev->tracing.im.private_data);
}
}
+
+void tevent_set_trace_queue_callback(struct tevent_context *ev,
+ tevent_trace_queue_callback_t cb,
+ void *private_data)
+{
+ if (ev->wrapper.glue != NULL) {
+ ev = tevent_wrapper_main_ev(ev);
+ tevent_abort(ev, "tevent_set_trace_queue_callback() "
+ "on wrapper");
+ return;
+ }
+
+ ev->tracing.qe.callback = cb;
+ ev->tracing.qe.private_data = private_data;
+}
+
+void tevent_get_trace_queue_callback(struct tevent_context *ev,
+ tevent_trace_queue_callback_t *cb,
+ void *p_private_data)
+{
+ *cb = ev->tracing.qe.callback;
--
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