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56 lines
2.4 KiB
Diff
56 lines
2.4 KiB
Diff
From b67daf06346038ed243b68e916126fa373043b15 Mon Sep 17 00:00:00 2001
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From: Thomas Deutschmann <whissi@gentoo.org>
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Date: Mon, 6 Apr 2020 20:27:06 +0200
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Subject: [PATCH 21/35] bmo#1516081: Disable watchdog during PGO builds
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Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1516081
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Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>
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---
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build/moz.configure/lto-pgo.configure | 4 ++--
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toolkit/components/terminator/nsTerminator.cpp | 7 +++++++
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2 files changed, 9 insertions(+), 2 deletions(-)
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diff --git a/build/moz.configure/lto-pgo.configure b/build/moz.configure/lto-pgo.configure
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index 2f32b11588..d55abb4934 100644
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--- a/build/moz.configure/lto-pgo.configure
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+++ b/build/moz.configure/lto-pgo.configure
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@@ -85,7 +85,7 @@ set_config("PGO_PROFILE_PATH", pgo_profile_path)
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def pgo_flags(compiler, profdata, target_is_windows):
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if compiler.type == "gcc":
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return namespace(
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- gen_cflags=["-fprofile-generate"],
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+ gen_cflags=["-fprofile-generate", "-DMOZ_PROFILE_INSTRUMENTATION"],
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gen_ldflags=["-fprofile-generate"],
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use_cflags=["-fprofile-use", "-fprofile-correction", "-Wcoverage-mismatch"],
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use_ldflags=["-fprofile-use"],
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@@ -99,7 +99,7 @@ def pgo_flags(compiler, profdata, target_is_windows):
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else:
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gen_ldflags = ["-fprofile-generate"]
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- gen_cflags = [prefix + "-fprofile-generate"]
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+ gen_cflags = [prefix + "-fprofile-generate", "-DMOZ_PROFILE_INSTRUMENTATION"]
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if target_is_windows:
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# native llvm-profdata.exe on Windows can't read profile data
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# if name compression is enabled (which cross-compiling enables
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diff --git a/toolkit/components/terminator/nsTerminator.cpp b/toolkit/components/terminator/nsTerminator.cpp
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index c35dfed444..98dfe42369 100644
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--- a/toolkit/components/terminator/nsTerminator.cpp
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+++ b/toolkit/components/terminator/nsTerminator.cpp
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@@ -418,6 +418,13 @@ void nsTerminator::StartWatchdog() {
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}
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#endif
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+ // Disable watchdog for PGO train builds - writting profile information at
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+ // exit may take time and it is better to make build hang rather than
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+ // silently produce poorly performing binary.
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+#ifdef MOZ_PROFILE_INSTRUMENTATION
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+ crashAfterMS = INT32_MAX;
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+#endif
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+
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UniquePtr<Options> options(new Options());
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const PRIntervalTime ticksDuration = PR_MillisecondsToInterval(1000);
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options->crashAfterTicks = crashAfterMS / ticksDuration;
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--
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2.29.2
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