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0033058: JT Import - perform XT translation in multiple threads

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Creating mutex for proper parallel processing.
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atychini 2022-07-05 18:39:08 +03:00 committed by smoskvin
parent e92d322d40
commit 8da2801496
1 changed files with 10 additions and 1 deletions
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11
src/ShapeProcess/ShapeProcess_Context.cxx
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@ -20,6 +20,7 @@
#include <ShapeProcess_Context.hxx> #include <ShapeProcess_Context.hxx>
#include <Standard_ErrorHandler.hxx> #include <Standard_ErrorHandler.hxx>
#include <Standard_Failure.hxx> #include <Standard_Failure.hxx>
#include <Standard_Mutex.hxx>
#include <Standard_Type.hxx> #include <Standard_Type.hxx>
#include <TCollection_AsciiString.hxx> #include <TCollection_AsciiString.hxx>
#include <TCollection_HAsciiString.hxx> #include <TCollection_HAsciiString.hxx>
@ -27,6 +28,8 @@
#include <sys/stat.h> #include <sys/stat.h>
IMPLEMENT_STANDARD_RTTIEXT(ShapeProcess_Context,Standard_Transient) IMPLEMENT_STANDARD_RTTIEXT(ShapeProcess_Context,Standard_Transient)
static Standard_Mutex THE_SHAPE_PROCESS_MUTEX;
//======================================================================= //=======================================================================
//function : ShapeProcess_Context //function : ShapeProcess_Context
//purpose : //purpose :
@ -73,6 +76,9 @@ Standard_Boolean ShapeProcess_Context::Init (const Standard_CString file,
Handle(Resource_Manager) ShapeProcess_Context::LoadResourceManager (const Standard_CString name) Handle(Resource_Manager) ShapeProcess_Context::LoadResourceManager (const Standard_CString name)
{ {
// Mutex is needed because we are initializing and changing static variables here, so
// without mutex it leads to race condition.
Standard_Mutex::Sentry aLock(&THE_SHAPE_PROCESS_MUTEX);
// Optimisation of loading resource file: file is load only once // Optimisation of loading resource file: file is load only once
// and reloaded only if file date has changed // and reloaded only if file date has changed
static Handle(Resource_Manager) sRC; static Handle(Resource_Manager) sRC;
@ -127,7 +133,10 @@ Handle(Resource_Manager) ShapeProcess_Context::LoadResourceManager (const Standa
sUMtime = aUMtime; sUMtime = aUMtime;
} }
} }
return sRC; // Creating copy of sRC for thread safety of Resource_Manager variables
// We should return copy because calling of Resource_Manager::SetResource() for one object
// in multiple threads causes race condition
return new Resource_Manager(*sRC);
} }
//======================================================================= //=======================================================================