222 lines
5.8 KiB
C
222 lines
5.8 KiB
C
#include "ecore_xcb_private.h"
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/**
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* @defgroup Ecore_X_Sync_Group X Sync Extension Functions
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*
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* Functions related to the X Sync extension.
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*/
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#ifdef ECORE_XCB_SYNC
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static int _sync_available = 0;
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static xcb_sync_initialize_cookie_t _ecore_xcb_sync_init_cookie;
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#endif /* ECORE_XCB_SYNC */
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/* To avoid round trips, the initialization is separated in 2
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functions: _ecore_xcb_sync_init and
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_ecore_xcb_sync_init_finalize. The first one gets the cookies and
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the second one gets the replies and set the atoms. */
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void
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_ecore_x_sync_init(const xcb_query_extension_reply_t *reply)
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{
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#ifdef ECORE_XCB_SYNC
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if (reply && (reply->present))
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_ecore_xcb_sync_init_cookie = xcb_sync_initialize_unchecked(_ecore_xcb_conn,
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XCB_SYNC_MAJOR_VERSION,
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XCB_SYNC_MINOR_VERSION);
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#endif /* ECORE_XCB_SYNC */
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} /* _ecore_x_sync_init */
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void
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_ecore_x_sync_init_finalize(void)
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{
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#ifdef ECORE_XCB_SYNC
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xcb_sync_initialize_reply_t *reply;
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reply = xcb_sync_initialize_reply(_ecore_xcb_conn,
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_ecore_xcb_sync_init_cookie, NULL);
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if (reply)
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{
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if (reply->major_version >= 3)
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_sync_available = 1;
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free(reply);
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}
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#endif /* ECORE_XCB_SYNC */
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} /* _ecore_x_sync_init_finalize */
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/**
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* Return whether the X server supports the Sync Extension.
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* @return 1 if the X Sync Extension is available, 0 otherwise.
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*
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* Return 1 if the X server supports the Sync Extension version 3.0,
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* 0 otherwise.
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* @ingroup Ecore_X_Sync_Group
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*/
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EAPI Eina_Bool
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ecore_x_sync_query(void)
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{
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#ifdef ECORE_XCB_SYNC
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return _sync_available;
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#else /* ifdef ECORE_XCB_SYNC */
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return 0;
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#endif /* ECORE_XCB_SYNC */
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} /* ecore_x_sync_query */
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/**
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* Create a new alarm.
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* @param counter A counter.
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* @return A newly created alarm.
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*
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* Create a new alarm.
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* @ingroup Ecore_X_Sync_Group
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*/
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EAPI Ecore_X_Sync_Alarm
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ecore_x_sync_alarm_new(Ecore_X_Sync_Counter counter)
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{
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#ifdef ECORE_XCB_SYNC
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uint32_t value_list[6];
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xcb_sync_int64_t init;
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Ecore_X_Sync_Alarm alarm;
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uint32_t value_mask;
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init.lo = 0;
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init.hi = 0;
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xcb_sync_set_counter(_ecore_xcb_conn, counter, init);
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value_mask =
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XCB_SYNC_CA_COUNTER | XCB_SYNC_CA_VALUE_TYPE |
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XCB_SYNC_CA_VALUE | XCB_SYNC_CA_TEST_TYPE |
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XCB_SYNC_CA_DELTA | XCB_SYNC_CA_EVENTS;
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value_list[0] = counter;
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value_list[1] = XCB_SYNC_VALUETYPE_ABSOLUTE;
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value_list[2] = 1;
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value_list[3] = XCB_SYNC_TESTTYPE_POSITIVE_COMPARISON;
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value_list[4] = 1;
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value_list[5] = 1;
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alarm = xcb_generate_id(_ecore_xcb_conn);
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xcb_sync_create_alarm(_ecore_xcb_conn,
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alarm,
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value_mask,
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(const uint32_t *)value_list);
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ecore_x_sync();
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return alarm;
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#else /* ifdef ECORE_XCB_SYNC */
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return 0;
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#endif /* ECORE_XCB_SYNC */
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} /* ecore_x_sync_alarm_new */
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/**
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* Delete an alarm.
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* @param alarm The alarm to delete.
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* @return 1 on success, 0 otherwise.
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*
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* Delete the @p alarm. Returns 1 on success, 0 otherwise.
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* @ingroup Ecore_X_Sync_Group
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*/
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EAPI Eina_Bool
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ecore_x_sync_alarm_free(Ecore_X_Sync_Alarm alarm)
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{
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#ifdef ECORE_XCB_SYNC
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xcb_sync_destroy_alarm(_ecore_xcb_conn, alarm);
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return 1;
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#else /* ifdef ECORE_XCB_SYNC */
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return 0;
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#endif /* ECORE_XCB_SYNC */
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} /* ecore_x_sync_alarm_free */
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/* FIXME: round trip */
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EAPI Eina_Bool
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ecore_x_sync_counter_query(Ecore_X_Sync_Counter counter, unsigned int *val)
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{
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#ifdef ECORE_XCB_SYNC
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xcb_sync_query_counter_cookie_t cookie;
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xcb_sync_query_counter_reply_t *reply;
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cookie = xcb_sync_query_counter_unchecked(_ecore_xcb_conn, counter);
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reply = xcb_sync_query_counter_reply(_ecore_xcb_conn, cookie, NULL);
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if (reply)
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{
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*val = (unsigned int)reply->counter_value.lo;
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free(reply);
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return 1;
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}
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#endif /* ECORE_XCB_SYNC */
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return 0;
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} /* ecore_x_sync_counter_query */
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EAPI Ecore_X_Sync_Counter
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ecore_x_sync_counter_new(int val)
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{
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#ifdef ECORE_XCB_SYNC
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xcb_sync_counter_t counter;
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xcb_sync_int64_t v;
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counter = xcb_generate_id(_ecore_xcb_conn);
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v.hi = (val < 0) ? ~0 : 0;
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v.lo = val;
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xcb_sync_create_counter(_ecore_xcb_conn, counter, v);
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return counter;
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#else /* ! ECORE_XCB_SYNC */
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return 0;
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#endif /* ! ECORE_XCB_SYNC */
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} /* ecore_x_sync_counter_new */
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EAPI void
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ecore_x_sync_counter_free(Ecore_X_Sync_Counter counter)
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{
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#ifdef ECORE_XCB_SYNC
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xcb_sync_destroy_counter(_ecore_xcb_conn, counter);
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#endif /* ECORE_XCB_SYNC */
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} /* ecore_x_sync_counter_free */
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EAPI void
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ecore_x_sync_counter_inc(Ecore_X_Sync_Counter counter, int by)
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{
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#ifdef ECORE_XCB_SYNC
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xcb_sync_int64_t v;
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v.hi = (by < 0) ? ~0 : 0;
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v.lo = by;
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xcb_sync_change_counter(_ecore_xcb_conn, counter, v);
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#endif /* ECORE_XCB_SYNC */
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} /* ecore_x_sync_counter_inc */
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EAPI void
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ecore_x_sync_counter_val_wait(Ecore_X_Sync_Counter counter, int val)
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{
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#ifdef ECORE_XCB_SYNC
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xcb_sync_query_counter_cookie_t cookie;
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xcb_sync_query_counter_reply_t *reply;
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xcb_sync_int64_t v1;
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xcb_sync_int64_t v2;
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xcb_sync_waitcondition_t cond;
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/* what's the purpose of that call ?? as the value is erased... */
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cookie = xcb_sync_query_counter_unchecked(_ecore_xcb_conn, counter);
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reply = xcb_sync_query_counter_reply(_ecore_xcb_conn, cookie, NULL);
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v1 = reply->counter_value;
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free(reply);
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v1.hi = (val < 0) ? ~0 : 0;
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v1.lo = val;
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v2.hi = ((val + 1) < 0) ? ~0 : 0;
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v2.lo = val + 1;
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cond.trigger.counter = counter;
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cond.trigger.wait_type = XCB_SYNC_VALUETYPE_ABSOLUTE;
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cond.trigger.wait_value = v1;
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cond.trigger.test_type = XCB_SYNC_TESTTYPE_POSITIVE_COMPARISON;
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cond.event_threshold = v2;
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xcb_sync_await(_ecore_xcb_conn, 1, (const xcb_sync_waitcondition_t *)&cond);
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#endif /* ECORE_XCB_SYNC */
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} /* ecore_x_sync_counter_val_wait */
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