mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 07:29:55 +00:00
Add locking around signal handler registration.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79254 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
76d5ccf6af
commit
6ae8c73aca
@ -14,6 +14,7 @@
|
||||
|
||||
#include "Unix.h"
|
||||
#include "llvm/ADT/STLExtras.h"
|
||||
#include "llvm/System/Mutex.h"
|
||||
#include <vector>
|
||||
#include <algorithm>
|
||||
#if HAVE_EXECINFO_H
|
||||
@ -33,6 +34,8 @@ using namespace llvm;
|
||||
|
||||
static RETSIGTYPE SignalHandler(int Sig); // defined below.
|
||||
|
||||
static SmartMutex<true> SignalsMutex;
|
||||
|
||||
/// InterruptFunction - The function to call if ctrl-c is pressed.
|
||||
static void (*InterruptFunction)() = 0;
|
||||
|
||||
@ -113,6 +116,7 @@ static RETSIGTYPE SignalHandler(int Sig) {
|
||||
sigfillset(&SigMask);
|
||||
sigprocmask(SIG_UNBLOCK, &SigMask, 0);
|
||||
|
||||
SignalsMutex.acquire();
|
||||
if (FilesToRemove != 0)
|
||||
while (!FilesToRemove->empty()) {
|
||||
FilesToRemove->back().eraseFromDisk(true);
|
||||
@ -122,14 +126,19 @@ static RETSIGTYPE SignalHandler(int Sig) {
|
||||
if (std::find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd) {
|
||||
if (InterruptFunction) {
|
||||
void (*IF)() = InterruptFunction;
|
||||
SignalsMutex.release();
|
||||
InterruptFunction = 0;
|
||||
IF(); // run the interrupt function.
|
||||
return;
|
||||
}
|
||||
|
||||
SignalsMutex.release();
|
||||
raise(Sig); // Execute the default handler.
|
||||
return;
|
||||
}
|
||||
|
||||
SignalsMutex.release();
|
||||
|
||||
// Otherwise if it is a fault (like SEGV) run any handler.
|
||||
if (CallBacksToRun)
|
||||
for (unsigned i = 0, e = CallBacksToRun->size(); i != e; ++i)
|
||||
@ -139,18 +148,23 @@ static RETSIGTYPE SignalHandler(int Sig) {
|
||||
|
||||
|
||||
void llvm::sys::SetInterruptFunction(void (*IF)()) {
|
||||
SignalsMutex.acquire();
|
||||
InterruptFunction = IF;
|
||||
SignalsMutex.release();
|
||||
RegisterHandlers();
|
||||
}
|
||||
|
||||
// RemoveFileOnSignal - The public API
|
||||
bool llvm::sys::RemoveFileOnSignal(const sys::Path &Filename,
|
||||
std::string* ErrMsg) {
|
||||
SignalsMutex.acquire();
|
||||
if (FilesToRemove == 0)
|
||||
FilesToRemove = new std::vector<sys::Path>();
|
||||
|
||||
FilesToRemove->push_back(Filename);
|
||||
|
||||
SignalsMutex.release();
|
||||
|
||||
RegisterHandlers();
|
||||
return false;
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user