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This makes several changes to the implementation of crashtracking
Completely changes the sigaction guard sequence. It is no longer necessary to suppress so many signals, since the watchdog process can no longer write() to a closed file descriptor (SIGPIPE) and it tries really hard to consume the exit status of all of its children (SIGCHLD).
Spawns a collector process, which isolates non-async-signal-safe operations
Carefully manages the duration of each child process from the watchdog (better hang)
Migrate certain operations from the nix to libc crates in order to prevent panics
Motivation
RFC4 is a comprehensive improvement of the crashtracking implementation.
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What does this PR do?
This makes several changes to the implementation of crashtracking
write()
to a closed file descriptor (SIGPIPE) and it tries really hard to consume the exit status of all of its children (SIGCHLD).nix
tolibc
crates in order to prevent panicsMotivation
RFC4 is a comprehensive improvement of the crashtracking implementation.