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android: Allow anonymous pipes for benchmarking

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In a typical scenario we would not want to run the build server if
autoninja is run as part of a script (see https://crrev.com/c/6278629),
but specifically for benchmarking, we want to allow callers who
explicitly set AUTONINJA_STDOUT_NAME to still run the build server, as
these callers need the build server to run to properly time and
benchmark, even if all the output is discarded.

R=agrieve@chromium.org

Bug: 393136861
Change-Id: I97f556c2238eacc5cc8240287f4c6da0160efb71
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/6499328
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Auto-Submit: Peter Wen <wnwen@chromium.org>
This commit is contained in:
wnwen@chromium.org
2025-04-29 12:32:32 -07:00
committed by LUCI CQ
parent 85b059fe00
commit d6a7a6bd9c
1 changed files with 4 additions and 0 deletions
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4
android_build_server_helper.py
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@@ -51,6 +51,10 @@ def _start_server(local_dev_server_path):
def _set_tty_env():
# If the caller explicitly set this environment variable, just use it
# instead of failing.
if "AUTONINJA_STDOUT_NAME" in os.environ:
return True
stdout_name = os.readlink('/proc/self/fd/1')
# Anonymous pipes can't be opened. These look like "pipe:[394765110]".
ret = os.path.exists(stdout_name)