63f033576c
This CL:
- Adds a new trait parameter to LazyInstance to let it initialize the instance
without paying the cost of atomic operations (which are expensive on Mac).
This only works for users who don't care about thread-safety and this is now
the default initialization trait used by LazyInstance in v8.
- Reverts the changes that were made in r11010 in isolate.{cc,h}. That lets
Isolate's accessors be as cheap as they were before (but adds one static initializer).
- Adds OS::PostSetup() used to initialize the math functions which depend on CPU features.
That lets the math functions get rid of CallOnce().
BUG=118686
Review URL: https://chromiumcodereview.appspot.com/9873023
Patch from Philippe Liard <pliard@chromium.org>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11198 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
56 lines
2.4 KiB
Bash
Executable File
56 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2012 the V8 project authors. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# Checks that the number of compilation units having at least one static
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# initializer in d8 matches the one defined below.
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# Note that the project must be built with SCons before running this script.
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# Allow:
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# - _GLOBAL__I__ZN2v810LineEditor6first_E
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# - _GLOBAL__I__ZN2v88internal32AtomicOps_Internalx86CPUFeaturesE
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# - _GLOBAL__I__ZN2v88internal8ThreadId18highest_thread_id_E
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expected_static_init_count=3
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v8_root=$(readlink -f $(dirname $BASH_SOURCE)/../)
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d8="${v8_root}/d8"
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if [ ! -f "$d8" ]; then
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echo "Please build the project with SCons."
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exit 1
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fi
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static_inits=$(nm "$d8" | grep _GLOBAL__I | awk '{ print $NF; }')
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static_init_count=$(echo "$static_inits" | wc -l)
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if [ $static_init_count -gt $expected_static_init_count ]; then
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echo "Too many static initializers."
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echo "$static_inits"
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exit 1
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fi
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