Using the dheap Command
NOTE >> You must be using MemoryScape with TotalView to have access to the CLI. |
The dheap command tracks memory problems from within the CLI. It supports the same functionality as the GUI, with some additional options. Here are actions available through the dheap command:
• To see the status of MemoryScape, use the dheap command with no arguments, or with the -status argument.
• To enable and disable MemoryScape, use dheap -enable and dheap -disable.
• To display information about the heap, use dheap -info. You can show information for the entire heap or limit what TotalView displays to just a part of it.
• To limit backtrace information to only the information that is important to you, use the dheap -backtrace command.
• To report errors when data is written outside a memory allocation, use the dheap -guard command.
• To determine whether there are pointers that point to or within a deallocated memory block, use the dheap -is_dangling command.
• To be notified of memory allocation or reallocation, use the dheap ‑tag_alloc command.
• To start and stop error notification, use dheap -notify and dheap -nonotify.
• To filter the information displayed, use dheap -filter.
• To check for leaks, use dheap -leaks.
• To paint memory with a bit pattern, use dheap -paint.
• To hoard memory, use dheap -hoard.
• To export view information, use dheap -export.
• To detect bounds and use-after-free errors, use dheap ‑red_zones.
• To compare memory states, either against a baseline or against a saved state or between two saved states, use dheap -compare.
NOTE >> Some dheap options are not available in the GUI. |
