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-rw-r--r--indra/newview/app_settings/settings.xml11
-rw-r--r--indra/newview/llappviewer.cpp18
2 files changed, 29 insertions, 0 deletions
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 05c3fc3bfe..802453d508 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -3858,6 +3858,17 @@
<key>Value</key>
<integer>1</integer>
</map>
+ <key>MainWorkTime</key>
+ <map>
+ <key>Comment</key>
+ <string>Max time per frame devoted to mainloop work queue (in milliseconds)</string>
+ <key>Persist</key>
+ <integer>1</integer>
+ <key>Type</key>
+ <string>F32</string>
+ <key>Value</key>
+ <real>0.1</real>
+ </map>
<key>QueueInventoryFetchTimeout</key>
<map>
<key>Comment</key>
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 722a6caa65..7c932a3959 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -233,6 +233,8 @@
#include "llavatariconctrl.h"
#include "llgroupiconctrl.h"
#include "llviewerassetstats.h"
+#include "workqueue.h"
+using namespace LL;
// Include for security api initialization
#include "llsecapi.h"
@@ -366,6 +368,8 @@ BOOL gLogoutInProgress = FALSE;
BOOL gSimulateMemLeak = FALSE;
+WorkQueue gMainloopWork("mainloop");
+
////////////////////////////////////////////////////////////
// Internal globals... that should be removed.
static std::string gArgs;
@@ -5210,6 +5214,20 @@ void LLAppViewer::idle()
// Execute deferred tasks.
LLDeferredTaskList::instance().run();
+ // Service the WorkQueue we use for replies from worker threads.
+ // Use function statics for the timeslice setting so we only have to fetch
+ // and convert MainWorkTime once.
+ static F32 MainWorkTimeRaw = gSavedSettings.getF32("MainWorkTime");
+ static F32Milliseconds MainWorkTimeMs(MainWorkTimeRaw);
+ // MainWorkTime is specified in fractional milliseconds, but std::chrono
+ // uses integer representations. What if we want less than a microsecond?
+ // Use nanoseconds. We're very sure we will never need to specify a
+ // MainWorkTime that would be larger than we could express in
+ // std::chrono::nanoseconds.
+ static std::chrono::nanoseconds MainWorkTimeNanoSec{
+ std::chrono::nanoseconds::rep(MainWorkTimeMs.value() * 1000000)};
+ gMainloopWork.runFor(MainWorkTimeNanoSec);
+
// Handle shutdown process, for example,
// wait for floaters to close, send quit message,
// forcibly quit if it has taken too long