6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-11-02 07:11:49 +00:00
Code Issues Projects Releases Wiki Activity

For CrashRecoveryContext::RunSafelyOnThread, propagate Darwin's PRIO_DARWIN_BG to the new thread if it is

Browse Source 
set on the calling thread.

This allows libclang's indexing threads to propagate their priority to the clang module building threads.

rdar://17459872


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211747 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Argyrios Kyrtzidis 2014-06-25 23:54:50 +00:00
parent f36f20ae7a
commit ce6e7c7a59
2 changed files with 24 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/llvm/Support/CrashRecoveryContext.h
View File

@ -87,6 +87,9 @@ public:
/// requested stack size).
///
/// See RunSafely() and llvm_execute_on_thread().
///
/// On Darwin, if PRIO_DARWIN_BG is set on the calling thread, it will be
/// propagated to the new thread as well.
bool RunSafelyOnThread(function_ref<void()>, unsigned RequestedStackSize = 0);
bool RunSafelyOnThread(void (*Fn)(void*), void *UserData,
unsigned RequestedStackSize = 0) {

23
lib/Support/CrashRecoveryContext.cpp
View File

@ -332,12 +332,26 @@ const std::string &CrashRecoveryContext::getBacktrace() const {
return CRC->Backtrace;
}
//
// FIXME: Portability.
static void setThreadBackgroundPriority() {
#ifdef __APPLE__
setpriority(PRIO_DARWIN_THREAD, 0, PRIO_DARWIN_BG);
#endif
}
static bool hasThreadBackgroundPriority() {
#ifdef __APPLE__
return getpriority(PRIO_DARWIN_THREAD, 0) == 1;
#else
return false;
#endif
}
namespace {
struct RunSafelyOnThreadInfo {
function_ref<void()> Fn;
CrashRecoveryContext *CRC;
bool UseBackgroundPriority;
bool Result;
};
}
@ -345,11 +359,16 @@ struct RunSafelyOnThreadInfo {
static void RunSafelyOnThread_Dispatch(void *UserData) {
RunSafelyOnThreadInfo *Info =
reinterpret_cast<RunSafelyOnThreadInfo*>(UserData);
if (Info->UseBackgroundPriority)
setThreadBackgroundPriority();
Info->Result = Info->CRC->RunSafely(Info->Fn);
}
bool CrashRecoveryContext::RunSafelyOnThread(function_ref<void()> Fn,
unsigned RequestedStackSize) {
RunSafelyOnThreadInfo Info = { Fn, this, false };
bool UseBackgroundPriority = hasThreadBackgroundPriority();
RunSafelyOnThreadInfo Info = { Fn, this, UseBackgroundPriority, false };
llvm_execute_on_thread(RunSafelyOnThread_Dispatch, &Info, RequestedStackSize);
if (CrashRecoveryContextImpl *CRC = (CrashRecoveryContextImpl *)Impl)
CRC->setSwitchedThread();