1f7d42efc9
This change includes two CLs by pliard@chromium.org: 1. http://codereview.chromium.org/9447052/ (Add CallOnce() and simple LazyInstance implementation): Note that this implementation of LazyInstance does not handle global destructors (i.e. the lazy instances are never deleted). This CL was initially reviewed on codereview.appspot.com: http://codereview.appspot.com/5687064/ 2. http://codereview.chromium.org/9455088/ (Remove static initializers in v8): This CL depends on CL 9447052 (adding CallOnce and LazyInstance). It is based on a patch sent by Digit. With this patch applied, we have only one static initializer left (in atomicops_internals_x86_gcc.cc). This static initializer populates a structure used by x86 atomic operations. It seems that we can hardly remove it. If possible, it will be removed in a next CL. This CL also modifies the presubmit script to check the number of static initializers. BUG=v8:1859 Review URL: https://chromiumcodereview.appspot.com/9666052 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11010 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
55 lines
2.3 KiB
Bash
Executable File
55 lines
2.3 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__ZN2v88internal32AtomicOps_Internalx86CPUFeaturesE
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# - _GLOBAL__I__ZN2v810LineEditor6first_E
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expected_static_init_count=2
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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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