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authorDimitry Andric <dim@FreeBSD.org>2019-10-23 17:52:22 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-10-23 17:52:22 +0000
commit3a1720af1d7f43edc5b214cde0be11bfb94d077e (patch)
tree029e0ff2d5e3c0eaf2405fd8e669555fdf5e1297 /lib/scudo/standalone/mutex.h
parent8f3cadc28cb2bb9e8f9d69eeaaea1f57f2f7b2ab (diff)
downloadsrc-vendor/compiler-rt.tar.gz
src-vendor/compiler-rt.zip
Vendor import of stripped compiler-rt trunk r375505, the last commitvendor/compiler-rt/compiler-rt-trunk-r375505vendor/compiler-rt
before the upstream Subversion repository was made read-only, and the LLVM project migrated to GitHub: https://llvm.org/svn/llvm-project/compiler-rt/trunk@375505
Notes
Notes: svn path=/vendor/compiler-rt/dist/; revision=353944 svn path=/vendor/compiler-rt/compiler-rt-r375505/; revision=353945; tag=vendor/compiler-rt/compiler-rt-trunk-r375505
Diffstat (limited to 'lib/scudo/standalone/mutex.h')
-rw-r--r--lib/scudo/standalone/mutex.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/scudo/standalone/mutex.h b/lib/scudo/standalone/mutex.h
index b6dc9188d347..b26b2df06627 100644
--- a/lib/scudo/standalone/mutex.h
+++ b/lib/scudo/standalone/mutex.h
@@ -25,7 +25,7 @@ public:
void init() { memset(this, 0, sizeof(*this)); }
bool tryLock();
NOINLINE void lock() {
- if (tryLock())
+ if (LIKELY(tryLock()))
return;
// The compiler may try to fully unroll the loop, ending up in a
// NumberOfTries*NumberOfYields block of pauses mixed with tryLocks. This
@@ -44,8 +44,8 @@ public:
void unlock();
private:
- static constexpr u8 NumberOfTries = 10U;
- static constexpr u8 NumberOfYields = 10U;
+ static constexpr u8 NumberOfTries = 8U;
+ static constexpr u8 NumberOfYields = 8U;
#if SCUDO_LINUX
atomic_u32 M;