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[MG_Remote, MG_Test, docs] (P7): forfeit the reverse channel on a non-draining peer (PH-6)

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swung0x48
2026-09-23 13:44:13 -04:00
parent 0535c4f07d
commit 3d0f531170
9 changed files with 368 additions and 29 deletions
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MobileGL/ConfigLoader.cpp
+8 -2
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@@ -396,6 +396,10 @@ namespace MobileGL::MG_ConfigLoader {
// control: no forced sync, and MagmaWireReclaimScenario's watermark case must go red.
ipc.WireDeferredMb = QueryEnvUint32("MOBILEGL_IPC_WIRE_DEFERRED_MB", 64, 0, 65536);
ipc.SpinUs = QueryEnvUint32("MOBILEGL_IPC_SPIN_US", 50, 0, 1000000);
// PH-6 (ID-P7-2; Config.h has the semantics). 0 is NOT admitted: a server with no
// patience at all would forfeit a healthy run-ahead client the first time its ring
// filled between two of the client's drains, which is an ordinary backlog.
ipc.EventWaitMs = QueryEnvUint32("MOBILEGL_IPC_EVENT_WAIT_MS", 2000, 1, 600000);
// 0 is admitted ON PURPOSE and is the negative control of exit gate E3(a): it turns
// the persistent-map push OFF, and PersistentCoherentMapScenario must go red.
ipc.PersistentBlockKb = QueryEnvUint32("MOBILEGL_IPC_PERSISTENT_BLOCK_KB", 64, 0, 65536);
@@ -469,10 +473,12 @@ namespace MobileGL::MG_ConfigLoader {
if (MG_Config::Transport == MG_Config::TransportMode::Monolith) return;
// One line, on the arm where these numbers decide behaviour, because every one of
// them is a number a bug report has to quote.
MGLOG_I("Config: IPC ring=%uMiB stage=%uMiB wire-deferred=%uMiB spin=%uus persistent-block=%uKiB "
MGLOG_I("Config: IPC ring=%uMiB stage=%uMiB wire-deferred=%uMiB spin=%uus event-wait=%ums "
"persistent-block=%uKiB "
"adopt-tier=%u verb-barrier=%u run-ahead=%u present-credit=%u control-timeout=%ums "
"cold-start=%ums strict=%d audit=%d role-split-state=%d affinity='%s'",
ipc.RingMb, ipc.StageMb, ipc.WireDeferredMb, ipc.SpinUs, ipc.PersistentBlockKb, ipc.AdoptTier,
ipc.RingMb, ipc.StageMb, ipc.WireDeferredMb, ipc.SpinUs, ipc.EventWaitMs,
ipc.PersistentBlockKb, ipc.AdoptTier,
ipc.VerbBarrier, ipc.RunAhead, ipc.PresentCredit, ipc.ControlTimeoutMs, ipc.ColdStartMs,
static_cast<int>(ipc.StrictErrors), static_cast<int>(ipc.Audit),
static_cast<int>(ipc.RoleSplitState), ipc.ServerAffinity.c_str());