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mdbx: rework API and Docs around Handle-Slow-Readers (no algorithmic changes).

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Change-Id: I5b76a8400ce6f5f241f8e4a7f53d746fe39f8e1e
This commit is contained in:
Leonid Yuriev
2020-09-29 19:24:57 +03:00
parent 6294e1710a
commit c8a0951566
12 changed files with 124 additions and 90 deletions
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15
test/test.cc
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@@ -78,16 +78,17 @@ const char *keygencase2str(const keygen_case keycase) {
//-----------------------------------------------------------------------------
int testcase::oom_callback(MDBX_env *env, mdbx_pid_t pid, mdbx_tid_t tid,
uint64_t txn, unsigned gap, size_t space,
int testcase::hsr_callback(const MDBX_env *env, const MDBX_txn *txn,
mdbx_pid_t pid, mdbx_tid_t tid, uint64_t laggard,
unsigned gap, size_t space,
int retry) MDBX_CXX17_NOEXCEPT {
(void)txn;
testcase *self = (testcase *)mdbx_env_get_userctx(env);
if (retry == 0)
log_notice("oom_callback: waitfor pid %lu, thread %" PRIuPTR
log_notice("hsr_callback: waitfor pid %lu, thread %" PRIuPTR
", txn #%" PRIu64 ", gap %d, scape %zu",
(long)pid, (size_t)tid, txn, gap, space);
(long)pid, (size_t)tid, laggard, gap, space);
if (self->should_continue(true)) {
osal_yield();
@@ -123,9 +124,9 @@ void testcase::db_prepare() {
if (unlikely(rc != MDBX_SUCCESS))
failure_perror("mdbx_env_set_maxdbs()", rc);
rc = mdbx_env_set_oomfunc(env, testcase::oom_callback);
rc = mdbx_env_set_hsr(env, testcase::hsr_callback);
if (unlikely(rc != MDBX_SUCCESS))
failure_perror("mdbx_env_set_oomfunc()", rc);
failure_perror("mdbx_env_set_hsr()", rc);
rc = mdbx_env_set_geometry(
env, config.params.size_lower, config.params.size_now,

5
test/test.h
View File

@@ -166,8 +166,9 @@ protected:
const keygen::buffer &old_value, MDBX_put_flags_t flags);
int remove(const keygen::buffer &akey, const keygen::buffer &adata);
static int oom_callback(MDBX_env *env, mdbx_pid_t pid, mdbx_tid_t tid,
uint64_t txn, unsigned gap, size_t space,
static int hsr_callback(const MDBX_env *env, const MDBX_txn *txn,
mdbx_pid_t pid, mdbx_tid_t tid, uint64_t laggard,
unsigned gap, size_t space,
int retry) MDBX_CXX17_NOEXCEPT;
MDBX_env_flags_t actual_env_mode{MDBX_ENV_DEFAULTS};