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| author | dim <dim@FreeBSD.org> | 2011-02-20 12:57:14 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2011-02-20 12:57:14 +0000 |
| commit | cbb70ce070d220642b038ea101d9c0f9fbf860d6 (patch) | |
| tree | d2b61ce94e654cb01a254d2195259db5f9cc3f3c /include/llvm/Support/Threading.h | |
| parent | 4ace901e87dac5bbbac78ed325e75462e48e386e (diff) | |
| download | FreeBSD-src-cbb70ce070d220642b038ea101d9c0f9fbf860d6.zip FreeBSD-src-cbb70ce070d220642b038ea101d9c0f9fbf860d6.tar.gz | |
Vendor import of llvm trunk r126079:
http://llvm.org/svn/llvm-project/llvm/trunk@126079
Diffstat (limited to 'include/llvm/Support/Threading.h')
| -rw-r--r-- | include/llvm/Support/Threading.h | 59 |
1 files changed, 59 insertions, 0 deletions
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 |
