def write_common_event_table(events, output, string_table, extra_table):
table_name = "gCommonEventInfo"
print("#if defined(_MSC_VER) && !defined(__clang__)", file=output)
print("const CommonEventInfo %s[] = {" % table_name, file=output)
print("#else", file=output)
print("constexpr CommonEventInfo %s[] = {" % table_name, file=output)
print("#endif", file=output)
for e, extras in zip(events, extra_table):
# Write a comment to make the file human-readable.
print(" // category: %s" % e.category, file=output)
print(" // methods: [%s]" % ", ".join(e.methods), file=output)
print(" // objects: [%s]" % ", ".join(e.objects), file=output)
# Write the common info structure
print(
" {%d, %d, %d, %d, %s, %s, %s }," % (
string_table.stringIndex(e.category),
string_table.stringIndex(e.expiry_version),
extras[0], # extra keys index
extras[1], # extra keys count
e.dataset,
" | ".join(e.record_in_processes_enum),
" | ".join(e.products_enum)),
file=output)
print("};", file=output)
static_assert(output, "sizeof(%s) <= UINT32_MAX" % table_name,
"index overflow")
def write_extra_table(events, output, string_table):
table_name = "gExtraKeysTable"
extra_table = []
extra_count = 0
print("#if defined(_MSC_VER) && !defined(__clang__)", file=output)
print("const uint32_t %s[] = {" % table_name, file=output)
print("#else", file=output)
print("constexpr uint32_t %s[] = {" % table_name, file=output)
print("#endif", file=output)
for e in events:
extra_index = 0
extra_keys = e.extra_keys
if len(extra_keys) > 0:
extra_index = extra_count
extra_count += len(extra_keys)
indexes = string_table.stringIndexes(extra_keys)
print(" // %s, [%s], [%s]" %
(e.category, ", ".join(e.methods), ", ".join(e.objects)),
file=output)
print(" // extra_keys: %s" % ", ".join(extra_keys), file=output)
print(" %s," % ", ".join(map(str, indexes)), file=output)
extra_table.append((extra_index, len(extra_keys)))
print("};", file=output)
static_assert(output, "sizeof(%s) <= UINT32_MAX" % table_name,
"index overflow")
return extra_table
def main(output, *filenames):
# Load the event data.
if len(filenames) > 1:
raise Exception('We don\'t support loading from more than one file.')
try:
events = parse_events.load_events(filenames[0], True)
except ParserError as ex:
print("\nError processing events:\n" + str(ex) + "\n")
sys.exit(1)
# Write the scalar data file.
print(banner, file=output)
print(file_header, file=output)
# Write the extra keys table.
string_table = StringTable()
extra_table = write_extra_table(events, output, string_table)
print("", file=output)
# Write a table with the common event data.
write_common_event_table(events, output, string_table, extra_table)
print("", file=output)
# Write the data for individual events.
write_event_table(events, output, string_table)
print("", file=output)
# Write the string table.
string_table_name = "gEventsStringTable"
string_table.writeDefinition(output, string_table_name)
static_assert(output, "sizeof(%s) <= UINT32_MAX" % string_table_name,
"index overflow")
print("", file=output)
print(file_footer, file=output)
def write_histogram_table(output, histograms):
string_table = StringTable()
label_table = []
label_count = 0
keys_table = []
keys_count = 0
print("constexpr HistogramInfo gHistogramInfos[] = {", file=output)
for histogram in histograms:
name_index = string_table.stringIndex(histogram.name())
exp_index = string_table.stringIndex(histogram.expiration())
labels = histogram.labels()
label_index = 0
if len(labels) > 0:
label_index = label_count
label_table.append(
(histogram.name(), string_table.stringIndexes(labels)))
label_count += len(labels)
keys = histogram.keys()
key_index = 0
if len(keys) > 0:
key_index = keys_count
keys_table.append(
(histogram.name(), string_table.stringIndexes(keys)))
keys_count += len(keys)
print_array_entry(output, histogram, name_index, exp_index,
label_index, len(labels), key_index, len(keys))
print("};\n", file=output)
strtab_name = "gHistogramStringTable"
string_table.writeDefinition(output, strtab_name)
static_assert(output, "sizeof(%s) <= UINT32_MAX" % strtab_name,
"index overflow")
print("\n#if defined(_MSC_VER) && !defined(__clang__)", file=output)
print("const uint32_t gHistogramLabelTable[] = {", file=output)
print("#else", file=output)
print("constexpr uint32_t gHistogramLabelTable[] = {", file=output)
print("#endif", file=output)
for name, indexes in label_table:
print("/* %s */ %s," % (name, ", ".join(map(str, indexes))),
file=output)
print("};", file=output)
print("\n#if defined(_MSC_VER) && !defined(__clang__)", file=output)
print("const uint32_t gHistogramKeyTable[] = {", file=output)
print("#else", file=output)
print("constexpr uint32_t gHistogramKeyTable[] = {", file=output)
print("#endif", file=output)
for name, indexes in keys_table:
print("/* %s */ %s," % (name, ", ".join(map(str, indexes))),
file=output)
print("};", file=output)
def shared_static_asserts(output, histogram):
name = histogram.name()
low = histogram.low()
high = histogram.high()
n_buckets = histogram.n_buckets()
static_assert(output, "%s < %s" % (low, high), "low >= high for %s" % name)
static_assert(output, "%s > 2" % n_buckets,
"Not enough values for %s" % name)
static_assert(output, "%s >= 1" % low, "Incorrect low value for %s" % name)
static_assert(
output, "%s > %s" % (high, n_buckets),
"high must be > number of buckets for %s;"
" you may want an enumerated histogram" % name)
def write_scalar_tables(scalars, output):
"""Writes the scalar and strings tables to an header file.
:param scalars: a list of ScalarType instances describing the scalars.
:param output: the output stream.
"""
string_table = StringTable()
print("const ScalarInfo gScalars[] = {", file=output)
for s in scalars:
# We add both the scalar label and the expiration string to the strings
# table.
name_index = string_table.stringIndex(s.label)
exp_index = string_table.stringIndex(s.expires)
# Write the scalar info entry.
write_scalar_info(s, output, name_index, exp_index)
print("};", file=output)
string_table_name = "gScalarsStringTable"
string_table.writeDefinition(output, string_table_name)
static_assert(output, "sizeof(%s) <= UINT32_MAX" % string_table_name,
"index overflow")
def write_event_table(events, output, string_table):
table_name = "gEventInfo"
print("#if defined(_MSC_VER) && !defined(__clang__)", file=output)
print("const EventInfo %s[] = {" % table_name, file=output)
print("#else", file=output)
print("constexpr EventInfo %s[] = {" % table_name, file=output)
print("#endif", file=output)
for common_info_index, e in enumerate(events):
for method_name, object_name in itertools.product(
e.methods, e.objects):
print(" // category: %s, method: %s, object: %s" %
(e.category, method_name, object_name),
file=output)
print(" {gCommonEventInfo[%d], %d, %d}," %
(common_info_index, string_table.stringIndex(method_name),
string_table.stringIndex(object_name)),
file=output)
print("};", file=output)
static_assert(output, "sizeof(%s) <= UINT32_MAX" % table_name,
"index overflow")
def static_asserts_for_enumerated(output, histogram):
n_values = histogram.high()
static_assert(output, "%s > 2" % n_values,
"Not enough values for %s" % histogram.name())