[PATCH 1/8] vinyl: add helper to check whether dump is in progress
Vladimir Davydov
vdavydov.dev at gmail.com
Tue Sep 4 20:23:44 MSK 2018
Needed solely to improve code readability. No functional changes.
---
src/box/vy_scheduler.c | 17 +++++++----------
src/box/vy_scheduler.h | 13 +++++++++++++
2 files changed, 20 insertions(+), 10 deletions(-)
diff --git a/src/box/vy_scheduler.c b/src/box/vy_scheduler.c
index 580c3129..367c8a20 100644
--- a/src/box/vy_scheduler.c
+++ b/src/box/vy_scheduler.c
@@ -488,8 +488,7 @@ vy_scheduler_unpin_lsm(struct vy_scheduler *scheduler, struct vy_lsm *lsm)
void
vy_scheduler_trigger_dump(struct vy_scheduler *scheduler)
{
- assert(scheduler->dump_generation <= scheduler->generation);
- if (scheduler->dump_generation < scheduler->generation) {
+ if (vy_scheduler_dump_in_progress(scheduler)) {
/* Dump is already in progress, nothing to do. */
return;
}
@@ -520,13 +519,13 @@ vy_scheduler_dump(struct vy_scheduler *scheduler)
fiber_cond_wait(&scheduler->dump_cond);
/* Trigger dump. */
- if (scheduler->generation == scheduler->dump_generation)
+ if (!vy_scheduler_dump_in_progress(scheduler))
scheduler->dump_start = ev_monotonic_now(loop());
- int64_t generation = ++scheduler->generation;
+ scheduler->generation++;
fiber_cond_signal(&scheduler->scheduler_cond);
/* Wait for dump to complete. */
- while (scheduler->dump_generation < generation) {
+ while (vy_scheduler_dump_in_progress(scheduler)) {
if (scheduler->is_throttled) {
/* Dump error occurred. */
struct error *e = diag_last_error(&scheduler->diag);
@@ -611,8 +610,7 @@ vy_scheduler_begin_checkpoint(struct vy_scheduler *scheduler)
return -1;
}
- assert(scheduler->dump_generation <= scheduler->generation);
- if (scheduler->generation == scheduler->dump_generation) {
+ if (!vy_scheduler_dump_in_progress(scheduler)) {
/*
* We are about to start a new dump round.
* Remember the current time so that we can update
@@ -638,7 +636,7 @@ vy_scheduler_wait_checkpoint(struct vy_scheduler *scheduler)
* Wait until all in-memory trees created before
* checkpoint started have been dumped.
*/
- while (scheduler->dump_generation < scheduler->generation) {
+ while (vy_scheduler_dump_in_progress(scheduler)) {
if (scheduler->is_throttled) {
/* A dump error occurred, abort checkpoint. */
struct error *e = diag_last_error(&scheduler->diag);
@@ -1730,8 +1728,7 @@ vy_scheduler_peek_dump(struct vy_scheduler *scheduler, struct vy_task **ptask)
{
retry:
*ptask = NULL;
- assert(scheduler->dump_generation <= scheduler->generation);
- if (scheduler->dump_generation == scheduler->generation) {
+ if (!vy_scheduler_dump_in_progress(scheduler)) {
/*
* All memory trees of past generations have
* been dumped, nothing to do.
diff --git a/src/box/vy_scheduler.h b/src/box/vy_scheduler.h
index deefacd7..89f8f170 100644
--- a/src/box/vy_scheduler.h
+++ b/src/box/vy_scheduler.h
@@ -31,6 +31,7 @@
* SUCH DAMAGE.
*/
+#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include <small/mempool.h>
@@ -151,6 +152,18 @@ struct vy_scheduler {
};
/**
+ * Return true if memory dump is in progress, i.e. there are
+ * in-memory trees that are being dumped right now or should
+ * be scheduled for dump as soon as possible.
+ */
+static inline bool
+vy_scheduler_dump_in_progress(struct vy_scheduler *scheduler)
+{
+ assert(scheduler->dump_generation <= scheduler->generation);
+ return scheduler->dump_generation < scheduler->generation;
+}
+
+/**
* Create a scheduler instance.
*/
void
--
2.11.0
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