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// SPDX-License-Identifier: GPL-3.0-or-later
#include "completion.h"
void completion_init(struct completion *p)
{
p->completed = 0;
p->completed_jobs = 0;
fatal_assert(0 == uv_cond_init(&p->cond));
fatal_assert(0 == uv_mutex_init(&p->mutex));
}
void completion_destroy(struct completion *p)
{
uv_cond_destroy(&p->cond);
uv_mutex_destroy(&p->mutex);
}
void completion_wait_for(struct completion *p)
{
uv_mutex_lock(&p->mutex);
while (0 == p->completed) {
uv_cond_wait(&p->cond, &p->mutex);
}
fatal_assert(1 == p->completed);
uv_mutex_unlock(&p->mutex);
}
bool completion_timedwait_for(struct completion *p, uint64_t timeout)
{
timeout *= NSEC_PER_SEC;
uint64_t start_time = uv_hrtime();
bool result = true;
uv_mutex_lock(&p->mutex);
while (!p->completed) {
int rc = uv_cond_timedwait(&p->cond, &p->mutex, timeout);
if (rc == 0) {
result = true;
break;
} else if (rc == UV_ETIMEDOUT) {
result = false;
break;
}
/*
* handle spurious wakeups
*/
uint64_t elapsed = uv_hrtime() - start_time;
if (elapsed >= timeout) {
result = false;
break;
}
timeout -= elapsed;
}
uv_mutex_unlock(&p->mutex);
return result;
}
void completion_mark_complete(struct completion *p)
{
uv_mutex_lock(&p->mutex);
p->completed = 1;
uv_cond_broadcast(&p->cond);
uv_mutex_unlock(&p->mutex);
}
unsigned completion_wait_for_a_job(struct completion *p, unsigned completed_jobs)
{
uv_mutex_lock(&p->mutex);
while (0 == p->completed && p->completed_jobs <= completed_jobs) {
uv_cond_wait(&p->cond, &p->mutex);
}
completed_jobs = p->completed_jobs;
uv_mutex_unlock(&p->mutex);
return completed_jobs;
}
void completion_mark_complete_a_job(struct completion *p)
{
uv_mutex_lock(&p->mutex);
p->completed_jobs++;
uv_cond_broadcast(&p->cond);
uv_mutex_unlock(&p->mutex);
}
bool completion_is_done(struct completion *p)
{
bool ret;
uv_mutex_lock(&p->mutex);
ret = p->completed;
uv_mutex_unlock(&p->mutex);
return ret;
}
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