diff options
Diffstat (limited to 'tools/shared.py')
| -rw-r--r-- | tools/shared.py | 100 |
1 files changed, 68 insertions, 32 deletions
diff --git a/tools/shared.py b/tools/shared.py index d391caa2..524145fa 100644 --- a/tools/shared.py +++ b/tools/shared.py @@ -298,6 +298,10 @@ CANONICAL_TEMP_DIR = os.path.join(TEMP_DIR, 'emscripten_temp') EMSCRIPTEN_TEMP_DIR = None DEBUG = os.environ.get('EMCC_DEBUG') +if DEBUG == "0": + DEBUG = None +DEBUG_CACHE = DEBUG and "cache" in DEBUG + if DEBUG: try: EMSCRIPTEN_TEMP_DIR = CANONICAL_TEMP_DIR @@ -557,7 +561,7 @@ class Settings: ret = [] for key, value in Settings.__dict__.iteritems(): if key == key.upper(): # this is a hack. all of our settings are ALL_CAPS, python internals are not - jsoned = json.dumps(value) + jsoned = json.dumps(value, sort_keys=True) ret += ['-s', key + '=' + jsoned] return ret @@ -566,6 +570,7 @@ class Settings: if opt_level >= 1: Settings.ASSERTIONS = 0 Settings.DISABLE_EXCEPTION_CATCHING = 1 + Settings.EMIT_GENERATED_FUNCTIONS = 1 if opt_level >= 2: Settings.RELOOP = 1 if opt_level >= 3: @@ -752,12 +757,16 @@ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)''' % { 'winfix': '' if not WINDOWS e resolved_symbols = set() temp_dirs = [] files = map(os.path.abspath, files) + has_ar = False + for f in files: + has_ar = has_ar or Building.is_ar(f) for f in files: if not Building.is_ar(f): if Building.is_bitcode(f): - new_symbols = Building.llvm_nm(f) - resolved_symbols = resolved_symbols.union(new_symbols.defs) - unresolved_symbols = unresolved_symbols.union(new_symbols.undefs.difference(resolved_symbols)).difference(new_symbols.defs) + if has_ar: + new_symbols = Building.llvm_nm(f) + resolved_symbols = resolved_symbols.union(new_symbols.defs) + unresolved_symbols = unresolved_symbols.union(new_symbols.undefs.difference(resolved_symbols)).difference(new_symbols.defs) actual_files.append(f) else: # Extract object files from ar archives, and link according to gnu ld semantics @@ -810,7 +819,37 @@ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)''' % { 'winfix': '' if not WINDOWS e # Finish link actual_files = unique_ordered(actual_files) # tolerate people trying to link a.so a.so etc. if DEBUG: print >>sys.stderr, 'emcc: llvm-linking:', actual_files - output = Popen([LLVM_LINK] + actual_files + ['-o', target], stdout=PIPE).communicate()[0] + + # check for too-long command line + link_cmd = [LLVM_LINK] + actual_files + ['-o', target] + # 8k is a bit of an arbitrary limit, but a reasonable one + # for max command line size before we use a respose file + response_file = None + if WINDOWS and len(' '.join(link_cmd)) > 8192: + if DEBUG: print >>sys.stderr, 'using response file for llvm-link' + [response_fd, response_file] = mkstemp(suffix='.response', dir=TEMP_DIR) + + link_cmd = [LLVM_LINK, "@" + response_file] + + response_fh = os.fdopen(response_fd, 'w') + for arg in actual_files: + # we can't put things with spaces in the response file + if " " in arg: + link_cmd.append(arg) + else: + response_fh.write(arg + "\n") + response_fh.close() + link_cmd.append("-o") + link_cmd.append(target) + + if len(' '.join(link_cmd)) > 8192: + print >>sys.stderr, 'emcc: warning: link command line is very long, even with response file -- use paths with no spaces' + + output = Popen(link_cmd, stdout=PIPE).communicate()[0] + + if response_file: + os.unlink(response_file) + assert os.path.exists(target) and (output is None or 'Could not open input file' not in output), 'Linking error: ' + output for temp_dir in temp_dirs: try_delete(temp_dir) @@ -869,8 +908,14 @@ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)''' % { 'winfix': '' if not WINDOWS e assert os.path.exists(output_filename), 'Could not create bc file: ' + output return output_filename + nm_cache = {} # cache results of nm - it can be slow to run + @staticmethod def llvm_nm(filename, stdout=PIPE, stderr=None): + if filename in Building.nm_cache: + #if DEBUG: print >> sys.stderr, 'loading nm results for %s from cache' % filename + return Building.nm_cache[filename] + # LLVM binary ==> list of symbols output = Popen([LLVM_NM, filename], stdout=stdout, stderr=stderr).communicate()[0] class ret: @@ -891,6 +936,7 @@ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)''' % { 'winfix': '' if not WINDOWS e ret.defs = set(ret.defs) ret.undefs = set(ret.undefs) ret.commons = set(ret.commons) + Building.nm_cache[filename] = ret return ret @staticmethod @@ -1091,24 +1137,6 @@ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)''' % { 'winfix': '' if not WINDOWS e @staticmethod def is_bitcode(filename): - # checks if a file contains LLVM bitcode - # if the file doesn't exist or doesn't have valid symbols, it isn't bitcode - try: - defs = Building.llvm_nm(filename, stderr=PIPE) - # If no symbols found, it might just be an empty bitcode file, try to dis it - if len(defs.defs) + len(defs.undefs) + len(defs.commons) == 0: - # llvm-nm 3.0 has a bug when reading symbols from ar files - # so try to see if we're dealing with an ar file, in which - # case we should try to dis it. - if not Building.is_ar(filename): - test_ll = os.path.join(EMSCRIPTEN_TEMP_DIR, 'test.ll') - Building.llvm_dis(filename, test_ll) - assert os.path.exists(test_ll) - try_delete(test_ll) - except Exception, e: - if DEBUG: print >> sys.stderr, 'shared.Building.is_bitcode failed to test whether file \'%s\' is a llvm bitcode file! Failed on exception: %s' % (filename, e) - return False - # look for magic signature b = open(filename, 'r').read(4) if b[0] == 'B' and b[1] == 'C': @@ -1184,6 +1212,10 @@ class Cache: except: pass try_delete(RELOOPER) + try: + open(Cache.dirname + '__last_clear', 'w').write('last clear: ' + time.asctime() + '\n') + except: + print >> sys.stderr, 'failed to save last clear time' # Request a cached file. If it isn't in the cache, it will be created with # the given creator function @@ -1226,29 +1258,30 @@ class JCache: # Returns a cached value, if it exists. Make sure the full key matches @staticmethod def get(shortkey, keys): - #if DEBUG: print >> sys.stderr, 'jcache get?', shortkey + if DEBUG_CACHE: print >> sys.stderr, 'jcache get?', shortkey cachename = JCache.get_cachename(shortkey) if not os.path.exists(cachename): - #if DEBUG: print >> sys.stderr, 'jcache none at all' + if DEBUG_CACHE: print >> sys.stderr, 'jcache none at all' return data = cPickle.Unpickler(open(cachename, 'rb')).load() if len(data) != 2: - #if DEBUG: print >> sys.stderr, 'jcache error in get' + if DEBUG_CACHE: print >> sys.stderr, 'jcache error in get' return oldkeys = data[0] if len(oldkeys) != len(keys): - #if DEBUG: print >> sys.stderr, 'jcache collision (a)' + if DEBUG_CACHE: print >> sys.stderr, 'jcache collision (a)' return for i in range(len(oldkeys)): if oldkeys[i] != keys[i]: - #if DEBUG: print >> sys.stderr, 'jcache collision (b)' + if DEBUG_CACHE: print >> sys.stderr, 'jcache collision (b)' return - #if DEBUG: print >> sys.stderr, 'jcache win' + if DEBUG_CACHE: print >> sys.stderr, 'jcache win' return data[1] # Sets the cached value for a key (from get_key) @staticmethod def set(shortkey, keys, value): + if DEBUG_CACHE: print >> sys.stderr, 'save to cache', shortkey cachename = JCache.get_cachename(shortkey) cPickle.Pickler(open(cachename, 'wb')).dump([keys, value]) #if DEBUG: @@ -1272,9 +1305,11 @@ class JCache: if os.path.exists(chunking_file): try: previous_mapping = cPickle.Unpickler(open(chunking_file, 'rb')).load() # maps a function identifier to the chunk number it will be in - #if DEBUG: print >> sys.stderr, 'jscache previous mapping', previous_mapping - except: - pass + if DEBUG: print >> sys.stderr, 'jscache previous mapping of size %d loaded from %s' % (len(previous_mapping), chunking_file) + except Exception, e: + print >> sys.stderr, 'Failed to load and unpickle previous chunking file at %s: ' % chunking_file, e + else: + print >> sys.stderr, 'Previous chunking file not found at %s' % chunking_file chunks = [] if previous_mapping: # initialize with previous chunking @@ -1337,6 +1372,7 @@ class JCache: assert ident not in new_mapping, 'cannot have duplicate names in jcache chunking' new_mapping[ident] = i cPickle.Pickler(open(chunking_file, 'wb')).dump(new_mapping) + if DEBUG: print >> sys.stderr, 'jscache mapping of size %d saved to %s' % (len(new_mapping), chunking_file) #if DEBUG: # for i in range(len(chunks)): # chunk = chunks[i] |