[Sanitizer] move ShadowRangeIsAvailable and several defines to common runtime
llvm-svn: 158499
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common.h b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
index 11f3f3b..a606688f 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
@@ -25,6 +25,11 @@
const uptr kWordSizeInBits = 8 * kWordSize;
const uptr kPageSizeBits = 12;
const uptr kPageSize = 1UL << kPageSizeBits;
+#ifndef _WIN32
+const uptr kMmapGranularity = kPageSize;
+#else
+const uptr kMmapGranularity = 1UL << 16;
+#endif
// Threads
int GetPid();
@@ -37,6 +42,8 @@
void UnmapOrDie(void *addr, uptr size);
void *MmapFixedNoReserve(uptr fixed_addr, uptr size);
void *Mprotect(uptr fixed_addr, uptr size);
+// Used to check if we can map shadow memory to a fixed location.
+bool MemoryRangeIsAvailable(uptr range_start, uptr range_end);
// Internal allocator
void *InternalAlloc(uptr size);