Readme.md Seems Incomplete For Mac
Posted By admin On 01.03.20Valgrind for Mac OS X Valgrind for Mac OS X. Some assembly required. Valgrind is a powerful open-source memory debugger.
Readme.md Seems Incomplete For Mac
This is a port of Valgrind for Mac OS X. Caveat programmer This port is UNSUPPORTED and INCOMPLETE and BUGGY. It may not find bugs in your program, or run your program correctly, or run your program at all. Requirements.
Mac OS X 10.5 Leopard. An Intel processor (32- or 64-bit). As much RAM as you can afford. Download and build Valgrind's Mac OS X support is now part of Valgrind's main development trunk. Follow their to download and build the latest code. Run valgrind -arch= valgrind-options.
/path/to/program program-options. Some things that don't work. PowerPC code.
Signals. Many system calls. Objective-C garbage collection.db-attach=yes. Tools other than memcheck Errors in system libraries Some system libraries have false positives or legitimate errors. Valgrind has a 'suppression file' mechanism to ignore specified errors. This port does not include any suppressions, so you'll have to discover them on your own.
Please do not file bug reports against system libraries on Valgrind evidence alone. Messages you may see while running If you see messages like the following, then your program is using a system call that Valgrind doesn't support.
Your program may run incorrectly after this. UNKNOWN syscall UNKNOWN mach message descriptor UNKNOWN host message UNKNOWN task message UNKNOWN thread message UNKNOWN fcntl UNKNOWN ioctl Messages like the following can probably be ignored. UNKNOWN disablethreadsignal is unsupported UNKNOWN sigaction is unsupported UNKNOWN Mach port modified Messages like the following indicate a mismatch between Valgrind's memory map and the kernel. Occasional failures are expected in multithreaded programs.
If the failure repeats for the same address range, then there may be a problem causing false errors or crashes. Sync check at.: FAILED Greg Parker.
. If you can identify a sequence of events that lead up to the issue, be sure to document each.
If the issue seems to occur at certain time intervals, be sure to record the times at which it happens. Does it happen only at certain times (for example, daily at 9:00) or on a periodic basis (for example, every 47 minutes)?. If the issue occurs so irregularly that you cannot yet describe when it happens, the suggestions below will help you troubleshoot the issue over time by making certain changes, then watching to see if the issue stops.
If the issue occurs at startup immediately following a third-party software installation,. You can also any other issues that occur during startup. If these suggestions do not resolve your issue, contact AppleCare or your nearest Apple Authorized Service Provider for assistance. Issues with a hardware device can sometimes appear to be software issues, but are not resolved with software troubleshooting. Eliminate hardware as a cause (or conversely, isolate the issue to software):. Disconnect external devices.
If the computer is an iBook or PowerBook computer, disconnect all external devices. For an iMac, disconnect all devices other than the Apple keyboard and mouse. For a Power Mac, disconnect all external devices other than one display (which should be connected to an original, built-in video port), and the original Apple keyboard and mouse. If this resolves the issue, add devices back one at a time (shut down first if the device requires it) to further isolate the issue.
Insert the Apple Hardware Test CD that came with your computer (if one did). Use the extended test. If any issues are found proceed to step 3, or contact AppleCare or your nearest Apple Authorized Service Provider to arrange for diagnostics and service as necessary. Shut down the computer and remove any third-party memory upgrades, expansion cards, additional hard drives, or other internal hardware upgrades.
If you are not comfortable doing this, an Apple Authorized Service provider can assist. A service fee may be charged if the issue is not related to your Apple hardware. Alternatively, you may wish to skip this step and go to 'Reinstall Mac OS X' below. If the issue is resolved, add your devices back one at a time. When the issue returns, remove the most recently-added device.
If the issue goes away again, you have identified the cause. If software was included with the device, try deleting and reinstalling it. You may also wish to contact the vendor or manufacturer of that device for specific troubleshooting steps. You may want to test devices on all available ports into which they can be used. If a USB device works on USB port 1 but not on USB port 2, try connecting other devices to port 2.
It is possible that your computer's ports aren't working properly. If an issue persists, reinstalling Mac OS X should resolve it.
For Mac OS X v10.6, simply Mac OS X v10.6 from its installation disc. For Mac OS X v10.2, 10.3, 10.4, or 10.5, perform an installation. Tip: You won't be able to return to your previous System following an Archive and Install installation, but you can select the 'Preserve existing Users & Network Settings' option to retain your original applications and settings, documents, and user accounts.
For Mac OS X v10.1.5 or earlier, reinstallation of Mac OS X requires erasing the Mac OS X volume. This is described in the next paragraph. If the issue persists, back up any necessary data, start up from a Mac OS X Install or Restore CD, erase the Mac OS X volume, reinstall Mac OS X and restore any additional Apple software. Reinstall additional software one item at a time, restarting the computer after each install.
For best results, use the computer for several hours after each installation to determine if that particular software contributed to the issue. Reinstalling everything at once without noting when the issue returned may lead to a need to repeat this process. Warning: Choosing Erase and Install will completely erase the contents of the chosen volume before installing Mac OS X. Be sure to back up your files before continuing.