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Implement SetInterruptFunction for Windows.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22582 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jeff Cohen 2005-08-02 03:04:47 +00:00
parent 7e608bbb5d
commit ee841a1a87
2 changed files with 27 additions and 2 deletions
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3
include/llvm/System/Signals.h
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@ -42,7 +42,8 @@ namespace sys {
/// being killed, and the interrupt function automatically disabled. Note /// being killed, and the interrupt function automatically disabled. Note
/// that interrupt functions are not allowed to call any non-reentrant /// that interrupt functions are not allowed to call any non-reentrant
/// functions. An null interrupt function pointer disables the current /// functions. An null interrupt function pointer disables the current
/// installed function. /// installed function. Note also that the handler may be executed on a
/// different thread on some platforms.
/// @brief Register a function to be called when ctrl-c is pressed. /// @brief Register a function to be called when ctrl-c is pressed.
void SetInterruptFunction(void (*IF)()); void SetInterruptFunction(void (*IF)());
} // End sys namespace } // End sys namespace

26
lib/System/Win32/Signals.inc
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@ -29,6 +29,9 @@
static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep); static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep);
static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType); static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType);
// InterruptFunction - The function to call if ctrl-c is pressed.
static void (*InterruptFunction)() = 0;
static std::vector<llvm::sys::Path> *FilesToRemove = NULL; static std::vector<llvm::sys::Path> *FilesToRemove = NULL;
static std::vector<llvm::sys::Path> *DirectoriesToRemove = NULL; static std::vector<llvm::sys::Path> *DirectoriesToRemove = NULL;
static bool RegisteredUnhandledExceptionFilter = false; static bool RegisteredUnhandledExceptionFilter = false;
@ -111,7 +114,9 @@ void sys::PrintStackTraceOnErrorSignal() {
void sys::SetInterruptFunction(void (*IF)()) { void sys::SetInterruptFunction(void (*IF)()) {
// Currently unimplemented. InterruptFunction = IF;
RegisterHandler();
LeaveCriticalSection(&CriticalSection);
} }
} }
@ -234,9 +239,28 @@ static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep) {
} }
static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType) { static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType) {
EnterCriticalSection(&CriticalSection);
Cleanup(); Cleanup();
// If an interrupt function has been set, go and run one it; otherwise,
// the process dies.
void (*IF)() = InterruptFunction;
InterruptFunction = 0; // Don't run it on another CTRL-C.
if (IF) {
try {
IF(); // Run it now.
} catch (...) {
// Kill the process on an exception.
LeaveCriticalSection(&CriticalSection);
return FALSE;
}
LeaveCriticalSection(&CriticalSection);
return TRUE; // Don't kill the process.
}
// Allow normal processing to take place; i.e., the process dies. // Allow normal processing to take place; i.e., the process dies.
LeaveCriticalSection(&CriticalSection);
return FALSE; return FALSE;
} }