ircd: Add interface for core valgrind hypercalls.

include/ircd/allocator.h

@@ -49,6 +49,13 @@ namespace ircd::allocator::vg
 	void set_noaccess(const const_buffer &);
 }
 
+/// Valgrind hypercall suite
+namespace ircd::vg
+{
+	size_t errors();
+	bool active();
+}
+
 namespace ircd
 {
 	using allocator::aligned_alloc;

ircd/allocator.cc

@@ -9,6 +9,7 @@
 // full license for this software is available in the LICENSE file.
 
 #include <RB_INC_MALLOC_H
+#include <RB_INC_VALGRIND_VALGRIND_H
 #include <RB_INC_VALGRIND_MEMCHECK_H
 
 // Uncomment or -D this #define to enable our own crude but simple ability to
@@ -71,6 +72,30 @@ ircd::allocator::trim(const size_t &pad)
 // valgrind
 //
 
+bool
+ircd::vg::active()
+{
+	#ifdef HAVE_VALGRIND_VALGRIND_H
+	return RUNNING_ON_VALGRIND;
+	#else
+	return false;
+	#endif
+}
+
+size_t
+ircd::vg::errors()
+{
+	#ifdef HAVE_VALGRIND_VALGRIND_H
+	return VALGRIND_COUNT_ERRORS;
+	#else
+	return 0;
+	#endif
+}
+
+//
+// valgrind memcheck
+//
+
 void
 ircd::allocator::vg::set_noaccess(const const_buffer &buf)
 {