1 files changed, 10 insertions, 0 deletions
diff --git a/indra/llimage/llimagejpeg.cpp b/indra/llimage/llimagejpeg.cpp
index a6da2f66ab..dd3efb3459 100644
--- a/indra/llimage/llimagejpeg.cpp
+++ b/indra/llimage/llimagejpeg.cpp
@@ -50,6 +50,8 @@ bool LLImageJPEG::updateData()
 {
     resetLastError();
 
+    LLImageDataLock lock(this);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (0 == getDataSize()))
     {
@@ -191,6 +193,9 @@ bool LLImageJPEG::decode(LLImageRaw* raw_image, F32 decode_time)
 
     resetLastError();
 
+    LLImageDataLock lockIn(this);
+    LLImageDataLock lockOut(raw_image);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (0 == getDataSize()))
     {
@@ -412,6 +417,8 @@ void LLImageJPEG::encodeTermDestination( j_compress_ptr cinfo )
 {
     LLImageJPEG* self = (LLImageJPEG*) cinfo->client_data;
 
+    LLImageDataLock lock(self);
+
     S32 file_bytes = (S32)(self->mOutputBufferSize - cinfo->dest->free_in_buffer);
     self->allocateData(file_bytes);
 
@@ -490,6 +497,9 @@ bool LLImageJPEG::encode( const LLImageRaw* raw_image, F32 encode_time )
 
     resetLastError();
 
+    LLImageDataSharedLock lockIn(raw_image);
+    LLImageDataLock lockOut(this);
+
     switch( raw_image->getComponents() )
     {
     case 1: