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perf: stop per-frame SQLite writes and console spam, make perf.log opt-in

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- Explorer: the tip check runs every frame the Explorer tab is open,
  and it read both tip rows and rewrote them each time (two autocommit
  WAL writes per frame). A steady tip is now kept in memory and skips
  SQLite. A new tip writes both rows in one savepoint, so a crash
  between them can't pair a new height with the old hash. A test
  checks that 100 steady checks write nothing.
- Console: while the daemon was in the Error state the Console tab
  added its error line on every poll, i.e. every frame, re-laying out
  the whole buffer each time. It prints once per error now: on entering
  Error, when the message changes, or after another crash
  (EmbeddedDaemon::getUnexpectedExitCount(), never reset). setState
  writes the message before the state, so a reader that sees Error sees
  that error's message. The stray " ===" suffix is gone.
- perf.log: the profiler appended a block every 300 frames on every
  run and never rotated the file (tens of MB a day for a wallet left
  open). It is now off unless the app starts with DRAGONX_PERFLOG=1;
  otherwise its zone hooks are near no-ops.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
DanS
2026-10-03 19:52:09 -05:00
co-authored by Claude Opus 5.5
parent 2d29a04981
commit 16e0ee9947
11 changed files with 116 additions and 17 deletions
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tests/test_phase4.cpp
+15
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@@ -5468,6 +5468,15 @@ void testRendererHelpers()
EXPECT_NEAR(dragonx::ui::ClampConsoleWrapWidth(40.0f, 8.0f), 50.0, 0.0001);
EXPECT_NEAR(dragonx::ui::ClampConsoleWrapWidth(200.0f, 12.0f), 176.0, 0.0001);
// The daemon-error line prints once per error, not on every poll (it flooded one line per frame).
using dragonx::ui::ShouldPrintDaemonErrorLine;
EXPECT_TRUE(ShouldPrintDaemonErrorLine(false, true, "bind failed", "")); // entering Error
EXPECT_FALSE(ShouldPrintDaemonErrorLine(true, true, "bind failed", "bind failed")); // still the same error
EXPECT_TRUE(ShouldPrintDaemonErrorLine(true, true, "binary missing", "bind failed")); // reason changed
EXPECT_TRUE(ShouldPrintDaemonErrorLine(false, true, "bind failed", "bind failed")); // a new episode
EXPECT_FALSE(ShouldPrintDaemonErrorLine(true, false, "bind failed", "")); // not in Error
EXPECT_TRUE(ShouldPrintDaemonErrorLine(true, true, "exit code 1", "exit code 1", true)); // crashed again
EXPECT_EQ(dragonx::ui::ClampMiningThreads(0, 8), 1);
EXPECT_EQ(dragonx::ui::ClampMiningThreads(12, 8), 8);
EXPECT_EQ(dragonx::ui::ClampMiningThreads(4, 8), 4);
@@ -5783,6 +5792,12 @@ void testExplorerBlockCache()
auto sameTipValidation = cache.prepareValidation(10, "hash-10");
EXPECT_FALSE(sameTipValidation.needed);
// A steady tip writes nothing: this check runs every frame the Explorer is open (it used to
// rewrite both tip rows each time).
const int changesBeforeSteadyTip = cache.totalChanges();
for (int i = 0; i < 100; ++i) EXPECT_FALSE(cache.prepareValidation(10, "hash-10").needed);
EXPECT_EQ(cache.totalChanges(), changesBeforeSteadyTip);
auto advancedValidation = cache.prepareValidation(12, "hash-12");
EXPECT_TRUE(advancedValidation.needed);
EXPECT_EQ(advancedValidation.height, 10);