[scudo] Scudo thread specific data refactor, part 1
Summary:
We are going through an overhaul of Scudo's TSD, to allow for new platforms
to be integrated more easily, and make the code more sound.
This first part is mostly renaming, preferring some shorter names, correcting
some comments. I removed `getPrng` and `getAllocatorCache` to directly access
the members, there was not really any benefit to them (and it was suggested by
Dmitry in D37590).
The only functional change is in `scudo_tls_android.cpp`: we enforce bounds to
the `NumberOfTSDs` and most of the logic in `getTSDAndLockSlow` is skipped if we
only have 1 TSD.
Reviewers: alekseyshl, dvyukov, kcc
Reviewed By: dvyukov
Subscribers: llvm-commits, srhines
Differential Revision: https://reviews.llvm.org/D38139
llvm-svn: 313987
diff --git a/compiler-rt/lib/scudo/scudo_tls_linux.cpp b/compiler-rt/lib/scudo/scudo_tls_linux.cpp
index f259226..8455394 100644
--- a/compiler-rt/lib/scudo/scudo_tls_linux.cpp
+++ b/compiler-rt/lib/scudo/scudo_tls_linux.cpp
@@ -28,7 +28,7 @@
__attribute__((tls_model("initial-exec")))
THREADLOCAL ThreadState ScudoThreadState = ThreadNotInitialized;
__attribute__((tls_model("initial-exec")))
-THREADLOCAL ScudoThreadContext ThreadLocalContext;
+THREADLOCAL ScudoTSD TSD;
static void teardownThread(void *Ptr) {
uptr I = reinterpret_cast<uptr>(Ptr);
@@ -43,7 +43,7 @@
reinterpret_cast<void *>(I - 1)) == 0))
return;
}
- ThreadLocalContext.commitBack();
+ TSD.commitBack();
ScudoThreadState = ThreadTornDown;
}
@@ -59,7 +59,7 @@
return;
CHECK_EQ(pthread_setspecific(PThreadKey, reinterpret_cast<void *>(
GetPthreadDestructorIterations())), 0);
- ThreadLocalContext.init();
+ TSD.init();
ScudoThreadState = ThreadInitialized;
}