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# Dr. Memory
Dr. Memory (www.drmemory.org) is an open-source dynamic memory
monitoring tool for Windows, Linux, and Mac.
## About Dr. Memory
Dr. Memory operates on unmodified application binaries running on
Windows, Linux, or Mac on commodity x86 and ARM32 (forthcoming) hardware.
It is capable of identifying memory-related programming errors including:
* accesses of uninitialized memory
* accesses to unaddressable memory (heap underflow and overflow)
* accesses to freed memory
* double frees
* memory leaks
* handle leaks (on Windows)
* GDI API usage errors (on Windows)
* accesses to un-reserved thread local storage slots (on Windows)
## Using Dr. Memory (Windows only)
Build your application with debug information and then run it under
Dr. Memory. Errors found are printed to the screen, and a summary is
shown at the end of the run.
### Obtain Dr. Memory
The Dr. Memory package is provided as a self-extracting archive
(DrMemory-Windows-sfx.exe) in tools/drmemory directory, which can be
extracted by running command 'DrMemory-Windows-sfx.exe -ounpacked -y'.
The Dr. Memory release package can be downloaded from
https://github.com/DynamoRIO/drmemory/wiki/Downloads.
Nightly builds can be downloaded from
https://build.chromium.org/p/client.drmemory/builds/.
The Dr. Memory source code can be found at
https://github.com/DynamoRIO/drmemory.
### Run your application with Dr. Memory
To run your application with Dr. Memory, simply put 'drmemory.exe --'
before the command that invokes the application.
* Running pdfium_unittests with Dr. Memory:
tools\drmemory\unpaced\bin\drmemory.exe -- out\Debug\pdfium_unittests.exe
* Running pdfium_tests with Dr. Memory:
tools\drmemory\unpaced\bin\drmemory.exe -- out\Debug\pdfium_tests.exe --png YourInputPDF.pdf
### Run test suite with Dr. Memory
A set of scripts are provided to run PDFium test suite with Dr. Memory
on buildbots, which can also be used for running test suite locally.
* Running pdfium_unittests with Dr. Memory:
tools\drmemory\scripts\pdfium_tests.bat -t pdfium_unittests
* Running pixel test suite with Dr. Memory:
tools\drmemory\scripts\pdfium_tests.bat -t pdfium_pixel
## Documentation
Command 'drmemory.exe -help' prints a list of Dr. Memory runtime
options with short description.
To view the full documention, point your web browser at
http://drmemory.org/docs/.
## Contact
This project is provided as-is, with no official support.
Use the Dr. Memory Users group at
http://groups.google.com/group/drmemory-users/ to ask questions and
seek help on using Dr. Memory.
Dr. Memory's source code and issue tracker live at
https://github.com/DynamoRIO/drmemory
If you would like to submit a patch, you will need to first sign a
Contributor License Agreement.
See https://github.com/DynamoRIO/drmemory/wiki/Contributing for more
information.