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author | Chandler Carruth <chandlerc@gmail.com> | 2014-06-27 15:13:01 +0000 |
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committer | Chandler Carruth <chandlerc@gmail.com> | 2014-06-27 15:13:01 +0000 |
commit | 39ea80cc564b22f46a2ae85450fdde35e2a59e89 (patch) | |
tree | 01f3dbb8908f241972c908b4015a80a8c64d6f4a /lib/Support | |
parent | 1edaab996f5390ab596167e527001dad4e2d3439 (diff) | |
download | llvm-39ea80cc564b22f46a2ae85450fdde35e2a59e89.tar.gz llvm-39ea80cc564b22f46a2ae85450fdde35e2a59e89.tar.bz2 llvm-39ea80cc564b22f46a2ae85450fdde35e2a59e89.tar.xz |
Re-apply r211287: Remove support for LLVM runtime multi-threading.
I'll fix the problems in libclang and other projects in ways that don't
require <mutex> until we sort out the cygwin situation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211900 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support')
-rw-r--r-- | lib/Support/Threading.cpp | 29 |
1 files changed, 3 insertions, 26 deletions
diff --git a/lib/Support/Threading.cpp b/lib/Support/Threading.cpp index 2358dde0e6..ca7f3f64aa 100644 --- a/lib/Support/Threading.cpp +++ b/lib/Support/Threading.cpp @@ -7,7 +7,8 @@ // //===----------------------------------------------------------------------===// // -// This file implements llvm_start_multithreaded() and friends. +// This file defines helper functions for running LLVM in a multi-threaded +// environment. // //===----------------------------------------------------------------------===// @@ -19,38 +20,14 @@ using namespace llvm; -static bool multithreaded_mode = false; - -bool llvm::llvm_start_multithreaded() { +bool llvm::llvm_is_multithreaded() { #if LLVM_ENABLE_THREADS != 0 - assert(!multithreaded_mode && "Already multithreaded!"); - multithreaded_mode = true; - - // We fence here to ensure that all initialization is complete BEFORE we - // return from llvm_start_multithreaded(). - sys::MemoryFence(); return true; #else return false; #endif } -void llvm::llvm_stop_multithreaded() { -#if LLVM_ENABLE_THREADS != 0 - assert(multithreaded_mode && "Not currently multithreaded!"); - - // We fence here to insure that all threaded operations are complete BEFORE we - // return from llvm_stop_multithreaded(). - sys::MemoryFence(); - - multithreaded_mode = false; -#endif -} - -bool llvm::llvm_is_multithreaded() { - return multithreaded_mode; -} - #if LLVM_ENABLE_THREADS != 0 && defined(HAVE_PTHREAD_H) #include <pthread.h> |