https://github.com/cppcoffee/c-memleak

Tracking C/C++ application memory usage dynamically.
https://github.com/cppcoffee/c-memleak

aya ebpf memleak rust uprobes

Last synced: 12 days ago
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Tracking C/C++ application memory usage dynamically.

• Host: GitHub
• URL: https://github.com/cppcoffee/c-memleak
• Owner: cppcoffee
• Created: 2024-11-30T10:08:33.000Z (2 months ago)
• Default Branch: main
• Last Pushed: 2024-12-22T11:58:12.000Z (about 2 months ago)
• Last Synced: 2024-12-22T12:28:52.500Z (about 2 months ago)
• Topics: aya, ebpf, memleak, rust, uprobes
• Language: Rust
• Homepage:
• Size: 28.3 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# c-memleak

## Prerequisites

1. stable rust toolchains: `rustup toolchain install stable`

1. nightly rust toolchains: `rustup toolchain install nightly --component rust-src`

1. (if cross-compiling) rustup target: `rustup target add ${ARCH}-unknown-linux-musl`

1. (if cross-compiling) LLVM: (e.g.) `brew install llvm` (on macOS)

1. (if cross-compiling) C toolchain: (e.g.) [`brew install filosottile/musl-cross/musl-cross`](https://github.com/FiloSottile/homebrew-musl-cross) (on macOS)

1. bpf-linker: `cargo install bpf-linker` (`--no-default-features` on macOS)

## Build

```shell

$ AYA_BUILD_EBPF=true cargo build --release

```

or

```shell

$ make

```

## Cross-compiling on macOS

Cross compilation should work on both Intel and Apple Silicon Macs.

```shell

CC=${ARCH}-linux-musl-gcc cargo build --package c-memleak --release \

  --target=${ARCH}-unknown-linux-musl \

  --config=target.${ARCH}-unknown-linux-musl.linker=\"${ARCH}-linux-musl-gcc\"

```

The cross-compiled program `target/${ARCH}-unknown-linux-musl/release/c-memleak` can be

copied to a Linux server or VM and run there.

## Usage

```shell

Usage: c-memleak [OPTIONS] --pid 

Options:

  -p, --pid           pid of the process

  -t, --timeout   timeout in seconds [default: 30]

  -o, --output     output file [default: /tmp/memleak.out]

  -v, --verbose            verbose mode

  -h, --help               Print help

  -V, --version            Print version

```

### Example:

```shell

# ./target/release/c-memleak --pid 20088

```

The Target `redis-server` build with MALLOC=libc, generating flame graphs:

```shell

# ./FlameGraph/flamegraph.pl /tmp/memleak.out > /tmp/1.svg

```

Flame graph:

![flamegraph](images/1.svg)

## Reference

[https://github.com/iovisor/bcc/blob/master/libbpf-tools/memleak.bpf.c](https://github.com/iovisor/bcc/blob/master/libbpf-tools/memleak.bpf.c)