aboutsummaryrefslogtreecommitdiff
path: root/lib/System/Threading.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/System/Threading.cpp')
-rw-r--r--lib/System/Threading.cpp116
1 files changed, 0 insertions, 116 deletions
diff --git a/lib/System/Threading.cpp b/lib/System/Threading.cpp
deleted file mode 100644
index 3b0bc72eca..0000000000
--- a/lib/System/Threading.cpp
+++ /dev/null
@@ -1,116 +0,0 @@
-//===-- llvm/System/Threading.cpp- 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.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements llvm_start_multithreaded() and friends.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/System/Threading.h"
-#include "llvm/System/Atomic.h"
-#include "llvm/System/Mutex.h"
-#include "llvm/Config/config.h"
-#include <cassert>
-
-using namespace llvm;
-
-static bool multithreaded_mode = false;
-
-static sys::Mutex* global_lock = 0;
-
-bool llvm::llvm_start_multithreaded() {
-#ifdef LLVM_MULTITHREADED
- assert(!multithreaded_mode && "Already multithreaded!");
- multithreaded_mode = true;
- global_lock = new sys::Mutex(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() {
-#ifdef LLVM_MULTITHREADED
- 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;
- delete global_lock;
-#endif
-}
-
-bool llvm::llvm_is_multithreaded() {
- return multithreaded_mode;
-}
-
-void llvm::llvm_acquire_global_lock() {
- if (multithreaded_mode) global_lock->acquire();
-}
-
-void llvm::llvm_release_global_lock() {
- if (multithreaded_mode) global_lock->release();
-}
-
-#if defined(LLVM_MULTITHREADED) && defined(HAVE_PTHREAD_H)
-#include <pthread.h>
-
-struct ThreadInfo {
- void (*UserFn)(void *);
- void *UserData;
-};
-static void *ExecuteOnThread_Dispatch(void *Arg) {
- ThreadInfo *TI = reinterpret_cast<ThreadInfo*>(Arg);
- TI->UserFn(TI->UserData);
- return 0;
-}
-
-void llvm::llvm_execute_on_thread(void (*Fn)(void*), void *UserData,
- unsigned RequestedStackSize) {
- ThreadInfo Info = { Fn, UserData };
- pthread_attr_t Attr;
- pthread_t Thread;
-
- // Construct the attributes object.
- if (::pthread_attr_init(&Attr) != 0)
- return;
-
- // Set the requested stack size, if given.
- if (RequestedStackSize != 0) {
- if (::pthread_attr_setstacksize(&Attr, RequestedStackSize) != 0)
- goto error;
- }
-
- // Construct and execute the thread.
- if (::pthread_create(&Thread, &Attr, ExecuteOnThread_Dispatch, &Info) != 0)
- goto error;
-
- // Wait for the thread and clean up.
- ::pthread_join(Thread, 0);
-
- error:
- ::pthread_attr_destroy(&Attr);
-}
-
-#else
-
-// No non-pthread implementation, currently.
-
-void llvm::llvm_execute_on_thread(void (*Fn)(void*), void *UserData,
- unsigned RequestedStackSize) {
- (void) RequestedStackSize;
- Fn(UserData);
-}
-
-#endif