Story Category: FastMM
VOTEDUnit with FastMM: Detecting memory leaks in individual tests.
jpluimers
Steps: Add the conditional define FASTMM to your project Ensure you have $(BDS)\source\DUnit\src in your search path in your project (as otherwise Delphi will pick the pre-built TestFramework.dcu file which was compiled without the FASTMM conditional… … Read more
3 years ago in Conference Topics, Conferences, Delphi, Development, DUnit, Event, FastMM, Software Development, TestInsight
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“Unexpected Memory Leak” after “MyTestApplication.exe: Memory Leak Detected”
jpluimers
Sometimes after a regular FastMM memory leak test report you get a dialog like this: ————————— Unexpected Memory Leak ————————— An unexpected memory leak has occurred. The unexpected small block leaks are: 61 – 68… … Read more
3 years ago in Conference Topics, Conferences, Delphi, Development, Event, FastMM, Software Development
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Some useful FastMM related methods to track memory usage
jpluimers
Below, for my link archive, some searches and relevant posts on FastMM related method calls to track or report memory usage. Searches: LogMemoryManagerStateToFile FastGetHeapStatus {Returns summarised information about the state of the memory manager. (For backward… … Read more
3 years ago in Delphi, Development, FastMM, Software Development
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Some links for detecting memory leaks from individual DUnit test methods
jpluimers
[WayBack] DUnit: Xtreme Unit Testing for Delphi / SVN / [r44] /trunk/readme-fastmm.txt You have to build your DUnit GUI-testrunner with the FASTMM and ManualLeakReportingControl directive. This will enable the memoryleak items (Take a look in… … Read more
3 years ago in Conference Topics, Conferences, Delphi, Development, DUnit, Event, FastMM, Software Development
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Delphi: migrating applications + DLLs that use ShareMem to using FastMM
jpluimers
Notes to myself: I bumped into some legacy code with a windows process and DLLs both using ShareMem (now System.ShareMem) so that strings could be shared between the instances. There were lots of memory leaks,… … Read more
3 years ago in Delphi, Development, FastMM, Software Development
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Delphi: quickly failing in use-after free scenarios
jpluimers
Two tricks that can help in use-after-free scenarios. Call ScanMemoryPoolForCorruptions often One of the scenarios of use after free, is that memory blocks get corrupted. FastMM4 normall checks this at process end using the CheckBlocksOnShutdown… … Read more
3 years ago in Conference Topics, Conferences, Delphi, Development, Event, FastMM, Software Development, Undocumented Delphi
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FastMM PushAllocationGroup
jpluimers
Few people seem to know about the FastMM PushAllocationGroup method. This search returned almost nothing: fastmm PushAllocationGroup -site:github.com -site:sourceforge.net -site:stackoverflow.com – Google Search. These results were convoluted: fastmm PushAllocationGroup site:sourceforge.net – Google Search fastmm PushAllocationGroup site:stackoverflow.com – Google… … Read more
3 years ago in Conference Topics, Conferences, Delphi, Development, Event, FastMM, Software Development
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Rewritten version (free for non-commercial; small price for commercial use) GitHub – pleriche/FastMM5: FastMM is a fast replacement memory manager for Embarcadero Delphi applications that scales well across multiple threads and CPU cores, is not prone to memory fragmentation, and supports shared memory without the use of external .DLL files.
jpluimers
It has been mentioned a few times already, but for my link archive: [WayBack] GitHub – pleriche/FastMM5: FastMM is a fast replacement memory manager for Embarcadero Delphi applications that scales well across multiple threads and… … Read more
4 years ago in Delphi, Development, FastMM, Software Development
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Listen to the Memory Manager
Dalija Prasnikar
Let’s say you have a nice, working Delphi application. One fine day, for no reason whatsoever, you decide to run your fine and bug free application with FastMM in full debug mode. Just for fun…… … Read more
4 years ago in Delphi, FastMM, memory management
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Delphi memory allocators and configuration notes in multi-threaded environments with high allocation/deallocation rates
jpluimers
From an interesting discussion at [Archive.is/WayBack] FaceBook: Delphi developer thread by Jarto Tarpio with some measurements by Jarto Tarpio and André Mussche. Manipulation of strings and lists in Delphi have high memory allocation/deallocation rates, so… … Read more
4 years ago in Delphi, Development, FastMM, Software Development
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