tree bce7e1c011ca22f2225eb9d902223417592fc2af
parent 462bcaf52ace374a573820f0b537816a4688b9f6
author Alexander Markov <alexmarkov@google.com> 1740607304 -0800
committer Commit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com> 1740607304 -0800

[vm] Use _setjmp instead of setjmp on MacOS/iOS

setjmp is extremely expensive on MacOS/iOS as it always saves
signal mask.

Introduce DART_SETJMP / DART_LONGJMP macros to use _setjmp instead of
setjmp on MacOS/iOS.

DeltaBlue on Mac/arm64 on the interpreter:
179585.3 us -> 58347.9 us. (3x faster)

TEST=ci
Issue: https://github.com/dart-lang/sdk/issues/60205

Change-Id: I2122f2eb4d5de66ae2ef904a7034af1ed09f1d07
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/412320
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>