b5a72a1645
it for scripts too. In the context of Chromium, this should have a very positive impact on memory consumption for web apps that run multiple tabs from the same domain with a lot of the same JavaScript code. For now, the cache retirement policy is really simple: Whenever a mark-sweep collection is started we clear the cache. This guarantees that this change will not have a huge negative impact on memory consumption, but it may not be ideal. We should consider a more sophisticated LRU scheme. Review URL: http://codereview.chromium.org/1933 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@270 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
145 lines
5.5 KiB
Python
145 lines
5.5 KiB
Python
# Copyright 2008 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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import sys
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from os.path import join, dirname, abspath
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root_dir = dirname(File('SConstruct').rfile().abspath)
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sys.path.append(join(root_dir, 'tools'))
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import js2c
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Import('context')
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SOURCES = {
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'all': [
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'accessors.cc', 'allocation.cc', 'api.cc', 'assembler.cc', 'ast.cc',
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'bootstrapper.cc', 'builtins.cc', 'checks.cc', 'code-stubs.cc',
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'codegen.cc', 'compilation-cache.cc', 'compiler.cc', 'contexts.cc',
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'conversions.cc', 'counters.cc', 'dateparser.cc', 'debug.cc',
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'disassembler.cc', 'execution.cc', 'factory.cc', 'flags.cc', 'frames.cc',
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'global-handles.cc', 'handles.cc', 'hashmap.cc', 'heap.cc', 'ic.cc',
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'jsregexp.cc', 'log.cc', 'mark-compact.cc', 'messages.cc', 'objects.cc',
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'parser.cc', 'property.cc', 'rewriter.cc', 'runtime.cc', 'scanner.cc',
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'scopeinfo.cc', 'scopes.cc', 'serialize.cc', 'snapshot-common.cc',
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'spaces.cc', 'string-stream.cc', 'stub-cache.cc', 'token.cc', 'top.cc',
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'unicode.cc', 'usage-analyzer.cc', 'utils.cc', 'v8-counters.cc',
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'v8.cc', 'v8threads.cc', 'variables.cc', 'zone.cc'
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],
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'arch:arm': ['assembler-arm.cc', 'builtins-arm.cc', 'codegen-arm.cc',
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'cpu-arm.cc', 'disasm-arm.cc', 'frames-arm.cc', 'ic-arm.cc',
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'macro-assembler-arm.cc', 'stub-cache-arm.cc'],
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'arch:ia32': ['assembler-ia32.cc', 'builtins-ia32.cc', 'codegen-ia32.cc',
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'cpu-ia32.cc', 'disasm-ia32.cc', 'frames-ia32.cc', 'ic-ia32.cc',
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'macro-assembler-ia32.cc', 'stub-cache-ia32.cc'],
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'simulator:arm': ['simulator-arm.cc'],
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'os:linux': ['platform-linux.cc'],
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'os:macos': ['platform-macos.cc'],
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'os:nullos': ['platform-nullos.cc'],
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'os:win32': ['platform-win32.cc'],
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'mode:release': [],
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'mode:debug': ['objects-debug.cc', 'prettyprinter.cc']
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}
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LIBRARY_FILES = '''
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runtime.js
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v8natives.js
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array.js
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string.js
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uri.js
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math.js
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messages.js
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apinatives.js
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debug-delay.js
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mirror-delay.js
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date-delay.js
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regexp-delay.js
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'''.split()
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JSCRE_FILES = '''
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pcre_compile.cpp
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pcre_exec.cpp
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pcre_tables.cpp
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pcre_ucp_searchfuncs.cpp
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pcre_xclass.cpp
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'''.split()
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def Abort(message):
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print message
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sys.exit(1)
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def ConfigureObjectFiles():
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env = Environment()
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env.Replace(**context.flags['v8'])
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context.ApplyEnvOverrides(env)
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env['BUILDERS']['JS2C'] = Builder(action=js2c.JS2C)
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env['BUILDERS']['Snapshot'] = Builder(action='$SOURCE $TARGET --logfile $LOGFILE')
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# Build the standard platform-independent source files.
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source_files = context.GetRelevantSources(SOURCES)
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# Combine the JavaScript library files into a single C++ file and
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# compile it.
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library_files = [s for s in LIBRARY_FILES]
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library_files.append('macros.py')
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libraries_src, libraries_empty_src = env.JS2C(['libraries.cc', 'libraries-empty.cc'], library_files)
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libraries_obj = context.ConfigureObject(env, libraries_src, CPPPATH=['.'])
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# Build JSCRE.
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jscre_env = env.Copy()
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jscre_env.Replace(**context.flags['jscre'])
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jscre_files = [join('third_party', 'jscre', s) for s in JSCRE_FILES]
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jscre_obj = context.ConfigureObject(jscre_env, jscre_files)
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# Build dtoa.
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dtoa_env = env.Copy()
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dtoa_env.Replace(**context.flags['dtoa'])
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dtoa_files = ['dtoa-config.c']
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dtoa_obj = context.ConfigureObject(dtoa_env, dtoa_files)
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source_objs = context.ConfigureObject(env, source_files)
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non_snapshot_files = [jscre_obj, dtoa_obj, source_objs]
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# Create snapshot if necessary.
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empty_snapshot_obj = context.ConfigureObject(env, 'snapshot-empty.cc')
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if context.use_snapshot:
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mksnapshot_src = 'mksnapshot.cc'
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mksnapshot = env.Program('mksnapshot', [mksnapshot_src, libraries_obj, non_snapshot_files, empty_snapshot_obj], PDB='mksnapshot.exe.pdb')
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snapshot_cc = env.Snapshot('snapshot.cc', mksnapshot, LOGFILE=File('snapshot.log').abspath)
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snapshot_obj = context.ConfigureObject(env, snapshot_cc, CPPPATH=['.'])
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libraries_obj = context.ConfigureObject(env, libraries_empty_src, CPPPATH=['.'])
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else:
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snapshot_obj = empty_snapshot_obj
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return [non_snapshot_files, libraries_obj, snapshot_obj]
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library_objects = ConfigureObjectFiles()
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Return('library_objects')
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