From cbb70ce070d220642b038ea101d9c0f9fbf860d6 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Sun, 20 Feb 2011 12:57:14 +0000
Subject: Vendor import of llvm trunk r126079:
http://llvm.org/svn/llvm-project/llvm/trunk@126079
---
include/llvm/Support/Threading.h | 59 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
create mode 100644 include/llvm/Support/Threading.h
(limited to 'include/llvm/Support/Threading.h')
diff --git a/include/llvm/Support/Threading.h b/include/llvm/Support/Threading.h
new file mode 100644
index 0000000..c0e842c
--- /dev/null
+++ b/include/llvm/Support/Threading.h
@@ -0,0 +1,59 @@
+//===-- llvm/Support/Threading.h - Control multithreading mode --*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// TThis file defines llvm_start_multithreaded() and friends.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SYSTEM_THREADING_H
+#define LLVM_SYSTEM_THREADING_H
+
+namespace llvm {
+ /// llvm_start_multithreaded - Allocate and initialize structures needed to
+ /// make LLVM safe for multithreading. The return value indicates whether
+ /// multithreaded initialization succeeded. LLVM will still be operational
+ /// on "failed" return, and will still be safe for hosting threading
+ /// applications in the JIT, but will not be safe for concurrent calls to the
+ /// LLVM APIs.
+ /// THIS MUST EXECUTE IN ISOLATION FROM ALL OTHER LLVM API CALLS.
+ bool llvm_start_multithreaded();
+
+ /// llvm_stop_multithreaded - Deallocate structures necessary to make LLVM
+ /// safe for multithreading.
+ /// THIS MUST EXECUTE IN ISOLATION FROM ALL OTHER LLVM API CALLS.
+ void llvm_stop_multithreaded();
+
+ /// llvm_is_multithreaded - Check whether LLVM is executing in thread-safe
+ /// mode or not.
+ bool llvm_is_multithreaded();
+
+ /// acquire_global_lock - Acquire the global lock. This is a no-op if called
+ /// before llvm_start_multithreaded().
+ void llvm_acquire_global_lock();
+
+ /// release_global_lock - Release the global lock. This is a no-op if called
+ /// before llvm_start_multithreaded().
+ void llvm_release_global_lock();
+
+ /// llvm_execute_on_thread - Execute the given \arg UserFn on a separate
+ /// thread, passing it the provided \arg UserData.
+ ///
+ /// This function does not guarantee that the code will actually be executed
+ /// on a separate thread or honoring the requested stack size, but tries to do
+ /// so where system support is available.
+ ///
+ /// \param UserFn - The callback to execute.
+ /// \param UserData - An argument to pass to the callback function.
+ /// \param RequestedStackSize - If non-zero, a requested size (in bytes) for
+ /// the thread stack.
+ void llvm_execute_on_thread(void (*UserFn)(void*), void *UserData,
+ unsigned RequestedStackSize = 0);
+}
+
+#endif
--
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