Add OpenMP support

third_party/openmp/kmp_debugger.h

@@ -0,0 +1,48 @@
+#if USE_DEBUGGER
+/*
+ * kmp_debugger.h -- debugger support.
+ */
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef KMP_DEBUGGER_H
+#define KMP_DEBUGGER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+/* This external variable can be set by any debugger to flag to the runtime
+   that we are currently executing inside a debugger.  This will allow the
+   debugger to override the number of threads spawned in a parallel region by
+   using __kmp_omp_num_threads() (below).
+   * When __kmp_debugging is TRUE, each team and each task gets a unique integer
+   identifier that can be used by debugger to conveniently identify teams and
+   tasks.
+   * The debugger has access to __kmp_omp_debug_struct_info which contains
+   information about the OpenMP library's important internal structures.  This
+   access will allow the debugger to read detailed information from the typical
+   OpenMP constructs (teams, threads, tasking, etc. ) during a debugging
+   session and offer detailed and useful information which the user can probe
+   about the OpenMP portion of their code. */
+extern int __kmp_debugging; /* Boolean whether currently debugging OpenMP RTL */
+// Return number of threads specified by the debugger for given parallel region.
+/* The ident field, which represents a source file location, is used to check if
+   the debugger has changed the number of threads for the parallel region at
+   source file location ident.  This way, specific parallel regions' number of
+   threads can be changed at the debugger's request. */
+int __kmp_omp_num_threads(ident_t const *ident);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
+
+#endif // KMP_DEBUGGER_H
+
+#endif // USE_DEBUGGER