1 files changed, 47 insertions, 0 deletions
diff --git a/vespamalloc/src/vespamalloc/malloc/memblockboundscheck.cpp b/vespamalloc/src/vespamalloc/malloc/memblockboundscheck.cpp
new file mode 100644
index 00000000000..8dcf14ee705
--- /dev/null
+++ b/vespamalloc/src/vespamalloc/malloc/memblockboundscheck.cpp
@@ -0,0 +1,47 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+#ifndef _VESPAMALLOC_MALLOC_MEMBLOCKBOUNDSCHECK_HPP_
+#define _VESPAMALLOC_MALLOC_MEMBLOCKBOUNDSCHECK_HPP_
+
+#include <vespamalloc/malloc/memblockboundscheck.h>
+
+namespace vespamalloc {
+
+FILE *  MemBlockBoundsCheckBaseTBase::_logFile = stderr;
+size_t  MemBlockBoundsCheckBaseTBase::_bigBlockLimit = 0x80000000;
+uint8_t MemBlockBoundsCheckBaseTBase::_fillValue = MemBlockBoundsCheckBaseTBase::NO_FILL;
+
+void MemBlockBoundsCheckBaseTBase::verifyFill() const
+{
+    const uint8_t *c(static_cast<const uint8_t *>(ptr())), *e(c+size());
+    for(;(c < e) && (*c == _fillValue); c++) { }
+    if (c != e) {
+        fprintf(_logFile, "Incorrect fillvalue (%2x) instead of (%2x) at position %ld of %ld\n", *c, _fillValue, c - static_cast<const uint8_t *>(ptr()), size());
+        abort();
+    }
+}
+
+void MemBlockBoundsCheckBaseTBase::logBigBlock(size_t exact, size_t adjusted, size_t gross) const
+{
+    size_t sz(exact);
+    if (sz > _bigBlockLimit) {
+        Stack st[32];
+        size_t count = Stack::fillStack(st, NELEMS(st));
+        fprintf(_logFile, "validating %p(%ld, %ld, %ld)",
+                ptr(), sz, adjusted, gross);
+        st[3].info(_logFile);
+        fprintf(_logFile, "\n");
+        for(size_t i=1; (i < count) && (i < NELEMS(st)); i++) {
+            const Stack & s = st[i];
+            if (s.valid()) {
+                s.info(_logFile);
+                fprintf(_logFile, " from ");
+            }
+        }
+        fprintf(_logFile, "\n");
+    }
+}
+
+
+} // namespace vespamalloc
+
+#endif