Alexander Markov
ebb7e1061c
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>
33 lines
908 B
C++
33 lines
908 B
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/longjump.h"
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#include "vm/thread.h"
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#include "vm/unit_test.h"
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namespace dart {
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static void LongJumpHelper(LongJumpScope* jump) {
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const Error& error = Error::Handle(
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LanguageError::New(String::Handle(String::New("LongJumpHelper"))));
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jump->Jump(1, error);
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UNREACHABLE();
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}
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ISOLATE_UNIT_TEST_CASE(LongJump) {
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LongJumpScope* base = Thread::Current()->long_jump_base();
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{
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LongJumpScope jump;
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if (DART_SETJMP(*jump.Set()) == 0) {
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LongJumpHelper(&jump);
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UNREACHABLE();
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} else {
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ASSERT(Error::Handle(thread->StealStickyError()).IsLanguageError());
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}
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}
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ASSERT(base == Thread::Current()->long_jump_base());
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}
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} // namespace dart
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