v8/src/SConscript
kasperl@chromium.org b5a72a1645 Generalized the EvalCache into a CompilationCache and enabled
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
2008-09-11 10:51:52 +00:00

145 lines
5.5 KiB
Python

# Copyright 2008 the V8 project authors. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import sys
from os.path import join, dirname, abspath
root_dir = dirname(File('SConstruct').rfile().abspath)
sys.path.append(join(root_dir, 'tools'))
import js2c
Import('context')
SOURCES = {
'all': [
'accessors.cc', 'allocation.cc', 'api.cc', 'assembler.cc', 'ast.cc',
'bootstrapper.cc', 'builtins.cc', 'checks.cc', 'code-stubs.cc',
'codegen.cc', 'compilation-cache.cc', 'compiler.cc', 'contexts.cc',
'conversions.cc', 'counters.cc', 'dateparser.cc', 'debug.cc',
'disassembler.cc', 'execution.cc', 'factory.cc', 'flags.cc', 'frames.cc',
'global-handles.cc', 'handles.cc', 'hashmap.cc', 'heap.cc', 'ic.cc',
'jsregexp.cc', 'log.cc', 'mark-compact.cc', 'messages.cc', 'objects.cc',
'parser.cc', 'property.cc', 'rewriter.cc', 'runtime.cc', 'scanner.cc',
'scopeinfo.cc', 'scopes.cc', 'serialize.cc', 'snapshot-common.cc',
'spaces.cc', 'string-stream.cc', 'stub-cache.cc', 'token.cc', 'top.cc',
'unicode.cc', 'usage-analyzer.cc', 'utils.cc', 'v8-counters.cc',
'v8.cc', 'v8threads.cc', 'variables.cc', 'zone.cc'
],
'arch:arm': ['assembler-arm.cc', 'builtins-arm.cc', 'codegen-arm.cc',
'cpu-arm.cc', 'disasm-arm.cc', 'frames-arm.cc', 'ic-arm.cc',
'macro-assembler-arm.cc', 'stub-cache-arm.cc'],
'arch:ia32': ['assembler-ia32.cc', 'builtins-ia32.cc', 'codegen-ia32.cc',
'cpu-ia32.cc', 'disasm-ia32.cc', 'frames-ia32.cc', 'ic-ia32.cc',
'macro-assembler-ia32.cc', 'stub-cache-ia32.cc'],
'simulator:arm': ['simulator-arm.cc'],
'os:linux': ['platform-linux.cc'],
'os:macos': ['platform-macos.cc'],
'os:nullos': ['platform-nullos.cc'],
'os:win32': ['platform-win32.cc'],
'mode:release': [],
'mode:debug': ['objects-debug.cc', 'prettyprinter.cc']
}
LIBRARY_FILES = '''
runtime.js
v8natives.js
array.js
string.js
uri.js
math.js
messages.js
apinatives.js
debug-delay.js
mirror-delay.js
date-delay.js
regexp-delay.js
'''.split()
JSCRE_FILES = '''
pcre_compile.cpp
pcre_exec.cpp
pcre_tables.cpp
pcre_ucp_searchfuncs.cpp
pcre_xclass.cpp
'''.split()
def Abort(message):
print message
sys.exit(1)
def ConfigureObjectFiles():
env = Environment()
env.Replace(**context.flags['v8'])
context.ApplyEnvOverrides(env)
env['BUILDERS']['JS2C'] = Builder(action=js2c.JS2C)
env['BUILDERS']['Snapshot'] = Builder(action='$SOURCE $TARGET --logfile $LOGFILE')
# Build the standard platform-independent source files.
source_files = context.GetRelevantSources(SOURCES)
# Combine the JavaScript library files into a single C++ file and
# compile it.
library_files = [s for s in LIBRARY_FILES]
library_files.append('macros.py')
libraries_src, libraries_empty_src = env.JS2C(['libraries.cc', 'libraries-empty.cc'], library_files)
libraries_obj = context.ConfigureObject(env, libraries_src, CPPPATH=['.'])
# Build JSCRE.
jscre_env = env.Copy()
jscre_env.Replace(**context.flags['jscre'])
jscre_files = [join('third_party', 'jscre', s) for s in JSCRE_FILES]
jscre_obj = context.ConfigureObject(jscre_env, jscre_files)
# Build dtoa.
dtoa_env = env.Copy()
dtoa_env.Replace(**context.flags['dtoa'])
dtoa_files = ['dtoa-config.c']
dtoa_obj = context.ConfigureObject(dtoa_env, dtoa_files)
source_objs = context.ConfigureObject(env, source_files)
non_snapshot_files = [jscre_obj, dtoa_obj, source_objs]
# Create snapshot if necessary.
empty_snapshot_obj = context.ConfigureObject(env, 'snapshot-empty.cc')
if context.use_snapshot:
mksnapshot_src = 'mksnapshot.cc'
mksnapshot = env.Program('mksnapshot', [mksnapshot_src, libraries_obj, non_snapshot_files, empty_snapshot_obj], PDB='mksnapshot.exe.pdb')
snapshot_cc = env.Snapshot('snapshot.cc', mksnapshot, LOGFILE=File('snapshot.log').abspath)
snapshot_obj = context.ConfigureObject(env, snapshot_cc, CPPPATH=['.'])
libraries_obj = context.ConfigureObject(env, libraries_empty_src, CPPPATH=['.'])
else:
snapshot_obj = empty_snapshot_obj
return [non_snapshot_files, libraries_obj, snapshot_obj]
library_objects = ConfigureObjectFiles()
Return('library_objects')