flamegraph incompatible with macOS dtrace

[Feliix42]

When running flamegraph on version 0.2.0, it only results in dtrace showing me it's usage message, indicating that the flamegraph tool used a wrong invocation.

For reference, I use macOS Mojave (Version 10.14.6) with the stock dtrace.

[djc]

FWIW, flamegraph 0.3.0 seems to be working fine for me on current Catalina.

[alexhexabeam]

I also get the dtrace usage message on Mojave (10.14.6), with flamegraph 0.3.0.

[chamons]

I was able to run on macOS (10.15), and saw a number of error messages:

dtrace: description 'profile-997 ' matched 1 probe
dtrace: pid 45003 has exited
dtrace: error on enabled probe ID 1 (ID 34: profile:::profile-997): invalid address (0x7ffee5f38900) in action #2
dtrace: error on enabled probe ID 1 (ID 34: profile:::profile-997): invalid address (0x7ffee5f38900) in action #2

however it did successfully complete:

writing flamegraph to "flamegraph.svg"

[alexhexabeam]

@chamons What version of OSX were you running? So far, we've got two reports of it failing on Mojave, and one of success on Catalina.

[chamons]

Apologies, I thought I pasted it.

10.15.6 (19G73)

[joecorcoran]

Maybe this helps someone figure it out: I can run flamegraph 0.3.1 on macOS 10.14.6, but only when I pass no arguments to the executable. sudo cargo flamegraph --bin mybin works, sudo cargo flamegraph --bin mybin -- --myarg just prints the dtrace usage instructions.

[Erk-]

Also happens on FreeBSD 12.1-RELEASE-p8

$ DTRACE=/usr/sbin/dtrace cargo flamegraph --root --bin test -- argument
    Finished release [optimized + debuginfo] target(s) in 0.14s
dtrace: invalid probe specifier profile-997 /pid == $target/ { @[ustack(100)] = count(); }: extraneous argument 'argument' ($1 is not referenced)
failed to sample program

[djc]

If you are having this issue, please try my fix in #100.

[alexhexabeam]

@djc Your fix seems to work for me. Thank you!

[Feliix42]

Works for me as well. :)

[kdy1]

I created a new tool, which fixes this issue and supports running any target.

See: https://github.com/kdy1/cargo-profile