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cd1ee28be8
v8/tools
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Michael Achenbach cd1ee28be8 [test] Fix occasional hangs on pool termination 
On termination of the worker pool in the main process, a SIGTERM is
sent from pool to worker. It was meant to terminate long-running
tests in the worker process. The signal handler on the worker side,
however, was only registered during test execution. During the
remaining logic (<1% of the time probably) the default system
behavior for SIGTERM would be used (which will likely just kill
the process). The ungracefully killed process might be killed while
writing to the results queue, which then remains with corrupted data.
Later when the main process cleans up the queue, it hangs.

We now register a default handler in the worker process that catches
the SIGTERM and also gracefully stops the processing loop. Like
that, the SIGTERM signal will always be handled in workers and never
fall back to SIGKILL.

However, a small time window exists when the SIGTERM was caught
right when starting a test process, but when the test-abort handler
was not registered yet. We keep fixing this as a TODO. Worst case,
the main process will block until the last test run is done.

Bug: v8:13113
Change-Id: Ib60f82c6a1569da042c9f44f7b516e2f40a46f93
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3882972
Reviewed-by: Alexander Schulze <alexschulze@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83101}
2022-09-09 09:53:24 +00:00
..
bazel [bazel] Add optional deps for prebuilt bazel for bots 2021-06-22 08:42:15 +00:00
builtins-pgo [builtins] Fix typo in tools/builtins-pgo/generate.py 2022-08-29 08:55:39 +00:00
cfi [cfi] Use inclusive terminology 2020-07-28 05:57:41 +00:00
clusterfuzz [foozzie] Avoid more contradictory flags 2022-09-05 08:37:26 +00:00
cppgc Reland "Reland "Reland "cppgc: Enable checks for assignments in prefinalizers""" 2021-09-29 16:02:17 +00:00
debug_helper Reland "[sandbox] Sandboxify ExternalString external pointers" 2022-09-07 12:15:46 +00:00
dev [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gcmole [tools][gcmole] Add run_gcmole.py --help and drop env vars 2022-04-20 15:26:35 +00:00
generate_shim_headers [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
heap-layout [tools] Add placeholder comment for analytics code 2022-08-22 12:41:18 +00:00
heap-stats [tools] Add placeholder comment for analytics code 2022-08-22 12:41:18 +00:00
js [tools] Fix parse-processor 2022-08-04 19:00:33 +00:00
jsfunfuzz
link_clicker.extension
mb [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
memory [tools] Clean up insensitive terms 2020-12-01 20:02:48 +00:00
msan Rename msan blacklist.txt to ignorelist.txt 2021-05-27 08:24:50 +00:00
perf
profiling [tools][profiling] Add googler pprof support for chrome helper 2022-09-08 11:43:06 +00:00
profview [tools] Profview fixes 2022-08-30 13:55:08 +00:00
release [tools] Make roll_merge_gerrit.py also submit 2022-08-23 14:34:29 +00:00
sanitizers [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
snapshot [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
system-analyzer [tools][system-analyzer] Add support for apkEmbeddedLibrary and targetRootFS 2022-08-10 17:03:56 +00:00
testrunner [test] Fix occasional hangs on pool termination 2022-09-09 09:53:24 +00:00
toolchain
torque [tools] Clean up Py2 code 2022-03-17 09:05:27 +00:00
tracing/proto-converter [tools] Refactor, use built-in Array.flat() instead of custom flatten method 2021-05-31 07:46:15 +00:00
turbolizer [turbolizer] Bytecode view constant pool fix 2022-08-30 13:56:10 +00:00
ubsan [respect] Rename UBSAN's blacklists to ignorelists 2021-04-28 07:55:39 +00:00
unittests [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
v8.xcodeproj
v8windbg [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
valgrind/asan
vim [vim] Update vim scripts 2021-04-01 16:14:04 +00:00
visual_studio
wasm [tools][wasm] wami: Support hexdump for invalid modules 2022-08-12 10:50:08 +00:00
wasm-compilation-hints [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
zone-stats [tools] Add placeholder comment for analytics code 2022-08-22 12:41:18 +00:00
__init__.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
adb-d8.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
android-build.sh
android-run.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
android-sync.sh [mjsunit][tools] Sync module files for tests 2020-10-07 12:45:19 +00:00
arguments.mjs [tools] Cleanup Arguments processing in tools 2021-06-01 09:43:46 +00:00
avg.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
bash-completion.sh [bash-completion] Support some gm.py completion 2021-03-24 16:24:25 +00:00
bigint-tester.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
BUILD.gn [tools][wasm] Add "wami", the Wasm Module Inspector 2022-07-05 04:45:28 +00:00
callstats_groups.py [web snapshot] web snapshot <3 RuntimeCallStats 2021-05-19 12:16:28 +00:00
callstats-from-telemetry.sh [tools] Fix callstats 2022-02-17 19:12:24 +00:00
callstats.html [tools] Add placeholder comment for analytics code 2022-08-22 12:41:18 +00:00
callstats.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
callstats.py.vpython
check-inline-includes.sh
check-static-initializers.sh Bump expected static initializers count from 2 to 3 2021-02-12 09:47:44 +00:00
check-unused-bailouts.sh
check-unused-symbols.sh
codemap.mjs [tools][system-analyzer] Add profiler-panel 2022-04-26 17:57:03 +00:00
collect_deprecation_stats.sh
compare_torque_output.py [v8] Migrate compare_torque_output to py3 2022-02-08 15:46:11 +00:00
compare-table-gen.js
consarray.mjs [tools] Migrate more tools to ES6 classes 2021-01-11 16:40:39 +00:00
cpu.sh
cross_build_gcc.sh
csvparser.mjs [tools][system-analyzer] Various improvements 2022-04-08 19:46:22 +00:00
DEPS
detect-builtins.js
disasm.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
draw_instruction_graph.sh
dump-cpp.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
dumpcpp-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
dumpcpp.mjs [tools][system-analyzer] Speed up log parsing 2022-04-06 11:31:03 +00:00
eval_gc_nvp.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
eval_gc_time.sh Remove all leftovers of store buffer 2021-11-10 09:29:41 +00:00
find_depot_tools.py
find-builtin [tools] Add a tool for finding builtins 2021-04-07 12:51:38 +00:00
find-commit-for-patch.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
freebsd-tick-processor
fuzz-harness.sh
gc_nvp_common.py
gc-nvp-to-csv.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gc-nvp-trace-processor.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gdb-v8-support.py [tools] Fix gdb redirect helper in gdb-v8-support.py 2021-10-21 12:27:45 +00:00
gdbinit Revert "[tools] Add a simple gdb frame unwinder" 2022-05-12 14:48:42 +00:00
gen-inlining-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gen-keywords-gen-h.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gen-postmortem-metadata.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
gen-v8-gn.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
generate-builtins-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
generate-header-include-checks.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
generate-runtime-call-stats.py
generate-ten-powers.scm
get_landmines.py [py3] Bump get_landmines to py3 2022-04-04 11:03:36 +00:00
grokdump.py [tools] grokdump: Fix objdump detection for Python3 2022-06-23 14:28:54 +00:00
ic-processor [tools] Convert JS-tools to ES6 modules 2020-09-28 14:40:18 +00:00
ic-processor-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
index.html [tools] Fix index.html links 2022-08-29 14:14:56 +00:00
linux-tick-processor [tools] Port more tools to ES6 classes 2020-11-04 14:45:41 +00:00
lldb_commands.py [tools] Set up source map for lldb 2021-07-01 18:04:17 +00:00
locs.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
logreader.mjs [tools][system-analyzer] Add profiler-panel 2022-04-26 17:57:03 +00:00
mac-nm [tools] Profview fixes 2022-08-30 13:55:08 +00:00
mac-tick-processor
Makefile.tags
objdump-v8 [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
OWNERS [owners] Includes infra team as tools owners 2021-11-25 07:55:08 +00:00
package-lock.json [tools] Add README.md file and package.json for local development 2021-07-05 16:43:28 +00:00
package.json [tools] Add README.md file and package.json for local development 2021-07-05 16:43:28 +00:00
parse-processor [tools] Convert JS-tools to ES6 modules 2020-09-28 14:40:18 +00:00
parse-processor-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
parse-processor.html [tools] Add placeholder comment for analytics code 2022-08-22 12:41:18 +00:00
parse-processor.mjs [tools] Fix parse-processor 2022-08-04 19:00:33 +00:00
perf-compare.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
predictable_wrapper.py [tools] Clean up predictable wrapper py2 code 2022-07-18 07:38:42 +00:00
PRESUBMIT.py Reland "[tools] Clean up py2 code" 2022-03-25 12:14:26 +00:00
process-wasm-compilation-times.py [wasm] Tweak constants for estimating code space size 2022-03-15 14:41:13 +00:00
profile_view.js
profile_view.mjs [tools] Modernize tools .mjs files 2020-11-10 12:32:26 +00:00
profile.mjs [tools][profile] Add support for maglev optimisation markers 2022-07-27 08:48:25 +00:00
README.md [tools] Add README.md file and package.json for local development 2021-07-05 16:43:28 +00:00
regexp-sequences.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run_perf.py [test] Refactor testrunner (4) 2022-07-18 09:52:24 +00:00
run-clang-tidy.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run-num-fuzzer.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run-wasm-api-tests.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
run.py [tools] Switch script wrapper to Py3 2022-04-04 14:13:17 +00:00
shell-utils.h
sourcemap.mjs [tools][system-analyzer] Add profiler-panel 2022-04-26 17:57:03 +00:00
splaytree.mjs [tools] Improve system analyzer 2022-03-02 13:41:32 +00:00
stats-viewer.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
test262-results-parser.js
tickprocessor-driver.mjs [tools][system-analyzer] Add local symbol server 2021-07-01 09:59:17 +00:00
tickprocessor.mjs [tools][profile] Add support for maglev optimisation markers 2022-07-27 08:48:25 +00:00
try_perf.py [infra] Change all Python shebangs to Python3 2022-08-05 14:55:00 +00:00
turbolizer-perf.py
update-object-macros-undef.py
v8_presubmit.py [flags] Rename --opt to --turbofan 2022-05-03 12:10:30 +00:00
v8heapconst.py [sandbox] Fold V8_SANDBOXED_EXTERNAL_POINTERS into V8_ENABLE_SANDBOX 2022-09-08 15:25:30 +00:00
whitespace.txt Revert "White space to trigger Skia branch rollers" 2022-06-30 14:24:17 +00:00
windbg.js
windows-tick-processor.bat [tools] Use .mjs in windows-tick-processor.bat 2021-01-07 09:00:23 +00:00
wpr.wprp Step 1 (of 3-ish): Basic ETW Instrumentation in V8 2021-01-05 20:11:03 +00:00

README.md

TOOLS

This directory contains debugging and investigation tools for V8.

The contents are regularly mirrored to http://v8.dev/tools.

Local Development

For local development you have to start a local webserver under http://localhost:8000:

  cd tools/;
  npm install;
  ws;

Local Symbol Server

The system-analyzer can symbolize profiles for local binaries by running a local symbol server

  cd tools/;
  ws --stack system-analyzer/lws-middleware.js lws-static cors;

Note that the local symbol server will run nm and objdump and has access to your files.