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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/lib/ppc405lib/polling.c $ */
/* */
/* OpenPOWER OnChipController Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
/// \file polling.c
/// \brief Library APIs for polling
#include "polling.h"
int
polling(int* o_rc,
int (*i_condition)(void* io_arg, int* o_satisfied),
void* io_arg,
SsxInterval i_timeout,
SsxInterval i_sleep)
{
SsxTimebase start;
int rc, pollRc, timed_out, done;
if (SSX_ERROR_CHECK_API) {
SSX_ERROR_IF((i_condition == 0), POLLING_ERROR);
}
start = ssx_timebase_get();
timed_out = 0;
do {
pollRc = i_condition(io_arg, &done);
if (pollRc) {
rc = POLLING_CONDITION;
break;
}
if (done) {
rc = 0;
break;
}
if (timed_out) {
rc = POLLING_TIMEOUT;
break;
}
if (i_sleep != 0) {
rc = ssx_sleep(i_sleep);
if (rc) {
break;
}
}
timed_out =
((i_timeout != SSX_WAIT_FOREVER) &&
((ssx_timebase_get() - start) >= i_timeout));
} while (1);
if (o_rc) {
*o_rc = pollRc;
}
return rc;
}
void
busy_wait(SsxInterval i_interval)
{
SsxTimebase start;
start = ssx_timebase_get();
while ((ssx_timebase_get() - start) < i_interval);
}
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