Memview is an experimental memory profiler and visualizer.
Written for the Handmade Network's Visibility Jam. Memview is an app that visualizes memory allocations within the address space of the program. You can select individual blocks to view the allocating callstack, and scrub through a timeline of the program history to see how the memory footprint changes over time. Current functionality is very limited since it's currently just a proof of concept.
You'll need Zig, preferably version 0.11.0-dev.2247+38ee46dda since that's what I was using during development. Other 0.11.x master branch versions may also work.
To run the simple test, run these commands. This will start the test program, which will connect to memview and tell it about a bunch of memory allocations it's making. You'll be able to browse the timeline and examine memory allocations.
git clone --recurse-submodules https://github.com/rdunnington/memview.git
cd memview
zig build
./zig-out/bin/test_host_zig &
./zig-out/bin/memview &Memview was designed for use in non-zig programs. For this reason, an embeddable static library and C header for interop are provided in zig-out/lib and zig-out/include. However, due to bugs in the Zig compiler, this integration has problems:
- Windows: callstack symbols in non-zig modules are unable to be resolved
- Linux: memview_init() crashes on startup due to TLS info not being initialized in non-default _start scenarios
However, an example of this integration has been done with DOOM and is located at https://github.com/rdunnington/doomgeneric-memview in the memview branch.