[compiler-rt] r177628 - tsan: add a comment about magic numbers

[Dmitry Vyukov]

Author: dvyukov
Date: Thu Mar 21 01:28:04 2013
New Revision: 177628

URL: http://llvm.org/viewvc/llvm-project?rev=177628&view=rev
Log:
tsan: add a comment about magic numbers

Modified:
    compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc

Modified: compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc?rev=177628&r1=177627&r2=177628&view=diff
==============================================================================
--- compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc (original)
+++ compiler-rt/trunk/lib/tsan/rtl/tsan_interceptors.cc Thu Mar 21 01:28:04 2013
@@ -31,14 +31,17 @@ using namespace __tsan;  // NOLINT
 const int kSigCount = 64;
 
 struct my_siginfo_t {
+  // The size is determined by looking at sizeof of real siginfo_t on linux.
   u64 opaque[128 / sizeof(u64)];
 };
 
 struct sigset_t {
+  // The size is determined by looking at sizeof of real sigset_t on linux.
   u64 val[128 / sizeof(u64)];
 };
 
 struct ucontext_t {
+  // The size is determined by looking at sizeof of real ucontext_t on linux.
   u64 opaque[936 / sizeof(u64) + 1];
 };