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authorBinh-Minh Ribler <bmribler@hdfgroup.org>2012-03-30 19:34:20 (GMT)
committerBinh-Minh Ribler <bmribler@hdfgroup.org>2012-03-30 19:34:20 (GMT)
commit56d950d3264aae3d935854470a9178a333614bff (patch)
treee74485f6148c1c598b9961556820f7ddec7444f3 /c++/src/H5PredType.h
parent7f7b8bd9725854fc8b546bcde3252f2c8d5c5d32 (diff)
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[svn-r22209] Purpose: Fixed bugs HDFFV-2761 & HDFFV-7852
Description: - Replaced PredType::NotAtexit() with PredType::AtExit(H5CPP_EXITED) and used PredType::AtExit as a flag to detect when all predefined types have been destroyed. Then, H5close will be called to terminate the library after its being re-initiated when the PredType destructors were activated. This change removed the memory leaks shown by the user's sample program in HDFFV-2761. - Added H5CPP_EXITED for PredType::AtExit to use as a flag - Rearranged constructors in CompType to fix bug HDFFV-7852 - Updated some inaccurate comments - Removed stream functions from FileAccPropList - Replaced H5_VMS with appropriate macro in H5IdComponent.cpp Platforms tested: Linux/32 2.6 (jam) Linux/64 2.6 (amani) SunOS 5.10 (linew)
Diffstat (limited to 'c++/src/H5PredType.h')
-rw-r--r--c++/src/H5PredType.h15
1 files changed, 12 insertions, 3 deletions
diff --git a/c++/src/H5PredType.h b/c++/src/H5PredType.h
index 5b2fffb..9cb1c65 100644
--- a/c++/src/H5PredType.h
+++ b/c++/src/H5PredType.h
@@ -26,6 +26,14 @@
namespace H5 {
#endif
+/* This constant is defined for a workaround to eliminate memory leaks due to
+ the library being re-initiated when PredType destructors are invoked. A
+ PredType instant with H5CPP_EXITED as the value of its "id" is constructed
+ before the other PredType objects are created. At exit, when this special
+ PredType object is to be destructed, no HDF5 library function will be called
+ and the library will be terminated. -BMR, Mar 30, 2012 */
+#define H5CPP_EXITED -3 // -3 is less likely to be used elsewhere
+
class H5_DLLCPP PredType : public AtomType {
public:
///\brief Returns this class name
@@ -229,9 +237,10 @@ class H5_DLLCPP PredType : public AtomType {
#endif // DOXYGEN_SHOULD_SKIP_THIS
private:
- // added this to work around the atexit/global destructor problem
- // temporarily - it'll prevent the use of atexit to clean up
- static const PredType NotAtexit; // not working yet
+ // Added this to work around the atexit/global destructor problem.
+ // It'll help to terminate the library after other PredType instances
+ // are closed. -BMR, Mar 30, 2012
+ static const PredType AtExit;
protected:
#ifndef DOXYGEN_SHOULD_SKIP_THIS