mirror of
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b1e59721d4
This reverts commit c67fac9cb4.
Reason for revert: Regresses `dart:io` performance and causes
failures.
https://github.com/dart-lang/sdk/issues/51639
Original change's description:
> [vm] Remove tcmalloc and malloc profiler.
>
> The standalone VM originally began statically linking tcmalloc to work around bugs in the system malloc for Fiber. Later it used tcmalloc's hooks to implement a profiler, but this is rarely used since it is only available in debug mode, misses early allocations, and often misses late allocations from an exhausted sample buffer. Removing it altogether avoids build complexity around which combinations of compiler/architecture/sysroot support tcmalloc, and reduces binary size.
>
> TEST=ci
> Change-Id: I4b259e18b82b2d12a2a60962aabf83bd8d997d19
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/286120
> Reviewed-by: Ben Konyi <bkonyi@google.com>
> Commit-Queue: Ryan Macnak <rmacnak@google.com>
Change-Id: I4395edd6f5bd7e26b4e38f4d931ad2ea67afba18
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/286925
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
26 lines
1 KiB
Dart
26 lines
1 KiB
Dart
Dart uses tcmalloc in the standalone VM on Linux.
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To roll tcmalloc forward:
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. Clone the gperftools git repo at the revision you want in a directory off
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to the side.
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. Run a configure command similar to the one in the configure_command file in
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this directory. It is up to you to determine if different flags are required
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for the newer gperftools.
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. From that repo, copy src/config.h and src/gperftools/tcmalloc.h, and any other
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generated header files to the include/ directory in this directory.
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. Also copy the COPYING file and any other relevant licensing information.
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. Make sure that include/config.h defines HAVE_UCONTEXT_H on Linux,
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. Update tcmalloc_sources.gypi, and tcmalloc.gyp if necessary. This may require
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inspecting gperftools/Makefile.am to see any additional source files and
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preprocessor defines (-D flags).
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. Update the DEPS file with the new git hash.
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. Build and run tests for Debug, Release, and Product builds for ia32, x64,
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and arm for Linux and any other OSs that are supported.
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