Re-add fflush() after each CSV row when --output_stdout

JeffersonMontgomery-Intel · JeffersonMontgomery-Intel · commit f7310daffa1a · 2024-04-17T08:44:18.000-07:00
This was accidentally removed 2.0.0, causing data lag issues for tools using PresentMon console application with stdout output. See issue #232
diff --git a/PresentMon/CsvOutput.cpp b/PresentMon/CsvOutput.cpp
@@ -148,6 +148,10 @@ void WriteCsvHeader<FrameMetrics1>(FILE* fp)
         fwprintf(fp, L",QPCTime");
     }
     fwprintf(fp, L"\n");
+
+    if (args.mCSVOutput == CSVOutput::Stdout) {
+        fflush(fp);
+    }
 }
 
 template<>
@@ -213,6 +217,9 @@ void WriteCsvRow<FrameMetrics1>(
     }
     fwprintf(fp, L"\n");
 
+    if (args.mCSVOutput == CSVOutput::Stdout) {
+        fflush(fp);
+    }
 }
 
 template<>

Original file line number	Diff line number	Diff line change
`@@ -148,6 +148,10 @@ void WriteCsvHeader<FrameMetrics1>(FILE* fp)`
`148`	`148`	`fwprintf(fp, L",QPCTime");`
`149`	`149`	`}`
`150`	`150`	`fwprintf(fp, L"\n");`
	`151`	`+`
	`152`	`+ if (args.mCSVOutput == CSVOutput::Stdout) {`
	`153`	`+ fflush(fp);`
	`154`	`+ }`
`151`	`155`	`}`
`152`	`156`
`153`	`157`	`template<>`
`@@ -213,6 +217,9 @@ void WriteCsvRow<FrameMetrics1>(`
`213`	`217`	`}`
`214`	`218`	`fwprintf(fp, L"\n");`
`215`	`219`
	`220`	`+ if (args.mCSVOutput == CSVOutput::Stdout) {`
	`221`	`+ fflush(fp);`
	`222`	`+ }`
`216`	`223`	`}`
`217`	`224`
`218`	`225`	`template<>`