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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /toolkit/components/telemetry/build_scripts/gen_userinteraction_phf.py | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'toolkit/components/telemetry/build_scripts/gen_userinteraction_phf.py')
-rw-r--r-- | toolkit/components/telemetry/build_scripts/gen_userinteraction_phf.py | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/toolkit/components/telemetry/build_scripts/gen_userinteraction_phf.py b/toolkit/components/telemetry/build_scripts/gen_userinteraction_phf.py new file mode 100644 index 0000000000..f1c7256414 --- /dev/null +++ b/toolkit/components/telemetry/build_scripts/gen_userinteraction_phf.py @@ -0,0 +1,70 @@ +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + +from mozparsers.shared_telemetry_utils import ParserError +from perfecthash import PerfectHash + +PHFSIZE = 1024 + +import sys + +from mozparsers import parse_user_interactions + +banner = """/* This file is auto-generated, see gen_userinteraction_phf.py. */ +""" + +header = """ +#ifndef mozilla_TelemetryUserInteractionNameMap_h +#define mozilla_TelemetryUserInteractionNameMap_h + +#include "mozilla/PerfectHash.h" + +namespace mozilla { +namespace Telemetry { +""" + +footer = """ +} // namespace mozilla +} // namespace Telemetry +#endif // mozilla_TelemetryUserInteractionNameMap_h +""" + + +def main(output, *filenames): + """ + Generate a Perfect Hash Table for the UserInteraction name -> UserInteraction ID lookup. + The table is immutable once generated and we can avoid any dynamic memory allocation. + """ + + output.write(banner) + output.write(header) + + try: + user_interactions = list(parse_user_interactions.from_files(filenames)) + except ParserError as ex: + print("\nError processing UserInteractions:\n" + str(ex) + "\n") + sys.exit(1) + + user_interactions = [ + (bytearray(ui.label, "ascii"), idx) + for (idx, ui) in enumerate(user_interactions) + ] + name_phf = PerfectHash(user_interactions, PHFSIZE) + + output.write( + name_phf.cxx_codegen( + name="UserInteractionIDByNameLookup", + entry_type="uint32_t", + lower_entry=lambda x: str(x[1]), + key_type="const nsACString&", + key_bytes="aKey.BeginReading()", + key_length="aKey.Length()", + ) + ) + + output.write(footer) + + +if __name__ == "__main__": + main(sys.stdout, *sys.argv[1:]) |