Add some logging to track potential write halt
-: a tiny bit of performance hit
+: let us track the SD card write halt issue
low-risk change
diff --git a/oscl/oscl/osclio/src/oscl_file_native.cpp b/oscl/oscl/osclio/src/oscl_file_native.cpp
index 368b475..d3df6f5 100644
--- a/oscl/oscl/osclio/src/oscl_file_native.cpp
+++ b/oscl/oscl/osclio/src/oscl_file_native.cpp
@@ -33,6 +33,10 @@
#include "oscl_file_types.h"
#include "oscl_file_handle.h"
+// FIXME:
+// Is 100 milliseconds a good choice for writing out a single
+// compressed video frame?
+static const int FILE_WRITER_SPEED_TOLERANCE_IN_MILLISECONDS = 100;
OsclNativeFile::OsclNativeFile()
{
@@ -325,7 +329,15 @@
#endif
if (iFile)
{
- return fwrite(buffer, OSCL_STATIC_CAST(int32, size), OSCL_STATIC_CAST(int32, numelements), iFile);
+ struct timeval startTimeVal, endTimeVal;
+ gettimeofday(&startTimeVal, NULL);
+ uint32 items = fwrite(buffer, OSCL_STATIC_CAST(int32, size), OSCL_STATIC_CAST(int32, numelements), iFile);
+ gettimeofday(&endTimeVal, NULL);
+ long long timeInMicroSeconds = (endTimeVal.tv_sec - startTimeVal.tv_sec) * 1000000LL + (endTimeVal.tv_usec - startTimeVal.tv_usec);
+ if (timeInMicroSeconds/1000 > FILE_WRITER_SPEED_TOLERANCE_IN_MILLISECONDS) {
+ LOGW("writing %d bytes takes too long (%lld micro seconds)", items, timeInMicroSeconds);
+ }
+ return items;
}
return 0;
}
