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database synchronization only on commit

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This commit is contained in:
krangelov
2021-09-17 16:43:54 +02:00
parent 44b5d0f870
commit e41feae82a
3 changed files with 21 additions and 16 deletions
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28
src/runtime/c/pgf/db.cxx
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@@ -1022,6 +1022,18 @@ void PgfDB::unlink_transient_revision(ref<PgfPGF> pgf)
current_db->ms->transient_revisions = pgf->next;
}
PGF_INTERNAL
void PgfDB::sync()
{
malloc_state *ms = current_db->ms;
size_t size =
ms->top + chunksize(ptr(ms,ms->top)) + sizeof(size_t);
int res = msync((void *) ms, size, MS_SYNC | MS_INVALIDATE);
if (res != 0)
throw pgf_systemerror(errno);
}
DB_scope::DB_scope(PgfDB *db, DB_scope_mode m)
{
int res =
@@ -1030,8 +1042,6 @@ DB_scope::DB_scope(PgfDB *db, DB_scope_mode m)
if (res != 0)
throw pgf_systemerror(res);
mode = m;
save_db = current_db;
current_db = db;
current_base = (unsigned char*) current_db->ms;
@@ -1044,19 +1054,7 @@ DB_scope::~DB_scope()
{
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wterminate"
int res;
if (mode == WRITER_SCOPE) {
malloc_state *ms = current_db->ms;
size_t size =
ms->top + chunksize(ptr(ms,ms->top)) + sizeof(size_t);
res = msync((void *) ms, size, MS_SYNC | MS_INVALIDATE);
if (res != 0)
throw pgf_systemerror(errno);
}
res = pthread_rwlock_unlock(&current_db->rwlock);
int res = pthread_rwlock_unlock(&current_db->rwlock);
if (res != 0)
throw pgf_systemerror(res);