6813d9a7b2
Summary: This makes merge conflicts much easier to handle. Reviewed By: johnhurt Differential Revision: D37564000 fbshipit-source-id: a7f1a2711ffbdbb23c93e2f479f47d0368a2dad9 |
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| .. | ||
| chrome-trace | ||
| strace | ||
| Cargo.toml | ||
| chaos.rs | ||
| chunky_print.rs | ||
| counter1.rs | ||
| counter2.rs | ||
| debug.rs | ||
| noop.rs | ||
| pedigree.rs | ||
| README.md | ||
| strace_minimal.rs | ||
Examples
Example tools built on top of Reverie.
Copying one of these examples is the recommended way to get started using Reverie.
chrome-trace: Generates a chrome trace file
This tool is like strace, but generates a trace file that can be loaded in
chrome://tracing/.
counter1: Reverie Counter Tool (1)
This is a basic example of event counting. It counts the number of system calls and reports that single integer at exit.
This version of tool uses a single, centralized piece of global state.
counter2: Reverie Counter Tool (2)
This is a basic example of event counting. This tool counts the number of system calls and reports that single integer at exit.
This implementation of the tool uses a distributed notion of state, maintaining a per-thread, per-process, and global state. Basically, this is an example of "MapReduce" style tracing of a process tree.
noop: Identity Function Tool
This instrumentation tool intercepts events but does nothing with them. It is useful for observing the overhead of interception, and as a starting point.
chunky_print: Print-gating Tool
This example tool intercepts write events on stdout and stderr and manipulates either when those outputs are released, or the scheduling order that determines the order of printed output.
pedigree: Deterministic virtual process IDs
This tool monitors the spawning of new processes and maps each new PID to a deterministic virtual PID. The new virtual PID is reported after each process-spawning syscall.
This tool is a work-in-progress and is not yet functioning.
pedigree.rs is an implementation of pedigree / virtual PID generation using local state.
virtual_process_tree.rs is an implementation which uses global state.
strace: Reverie Echo Tool
This instrumentation tool simply echos intercepted events, like strace.
chaos: Chaos Tool
This tool is meant to emulate a pathological kernel where:
readandrecvfromcalls return only one byte at a time. This is intended to catch errors in parsers that assume multiple bytes will be returned at a time.EINTRis returned instead of running the real syscall for every other read.