//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Jeff Cohen and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//===----------------------------------------------------------------------===//
#include "Win32.h"
-#include <llvm/System/Signals.h>
+#include <stdio.h>
#include <vector>
-
-#include "dbghelp.h"
-#include "psapi.h"
-
-#pragma comment(lib, "psapi.lib")
-#pragma comment(lib, "dbghelp.lib")
+#include <algorithm>
+
+#ifdef __MINGW32__
+ #include <imagehlp.h>
+#else
+ #include <dbghelp.h>
+#endif
+#include <psapi.h>
+
+#ifdef __MINGW32__
+ #if ((HAVE_LIBIMAGEHLP != 1) || (HAVE_LIBPSAPI != 1))
+ #error "libimagehlp.a & libpsapi.a should be present"
+ #endif
+#else
+ #pragma comment(lib, "psapi.lib")
+ #pragma comment(lib, "dbghelp.lib")
+#endif
// Forward declare.
static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep);
static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType);
-static std::vector<std::string> *FilesToRemove = NULL;
-static std::vector<llvm::sys::Path> *DirectoriesToRemove = NULL;
+// 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<std::pair<void(*)(void*), void*> > *CallBacksToRun = 0;
static bool RegisteredUnhandledExceptionFilter = false;
+static bool CleanupExecuted = false;
+#ifdef _MSC_VER
+static bool ExitOnUnhandledExceptions = false;
+#endif
+static PTOP_LEVEL_EXCEPTION_FILTER OldFilter = NULL;
// Windows creates a new thread to execute the console handler when an event
// (such as CTRL/C) occurs. This causes concurrency issues with the above
//=== and must not be UNIX code
//===----------------------------------------------------------------------===//
+#ifdef _MSC_VER
+/// CRTReportHook - Function called on a CRT debugging event.
+static int CRTReportHook(int ReportType, char *Message, int *Return) {
+ // Don't cause a DebugBreak() on return.
+ if (Return)
+ *Return = 0;
+
+ switch (ReportType) {
+ default:
+ case _CRT_ASSERT:
+ fprintf(stderr, "CRT assert: %s\n", Message);
+ // FIXME: Is there a way to just crash? Perhaps throw to the unhandled
+ // exception code? Perhaps SetErrorMode() handles this.
+ _exit(3);
+ break;
+ case _CRT_ERROR:
+ fprintf(stderr, "CRT error: %s\n", Message);
+ // FIXME: Is there a way to just crash? Perhaps throw to the unhandled
+ // exception code? Perhaps SetErrorMode() handles this.
+ _exit(3);
+ break;
+ case _CRT_WARN:
+ fprintf(stderr, "CRT warn: %s\n", Message);
+ break;
+ }
+
+ // Don't call _CrtDbgReport.
+ return TRUE;
+}
+#endif
-static void RegisterHandler() {
- if (RegisteredUnhandledExceptionFilter)
- {
+static void RegisterHandler() {
+ if (RegisteredUnhandledExceptionFilter) {
EnterCriticalSection(&CriticalSection);
return;
}
EnterCriticalSection(&CriticalSection);
RegisteredUnhandledExceptionFilter = true;
- SetUnhandledExceptionFilter(LLVMUnhandledExceptionFilter);
+ OldFilter = SetUnhandledExceptionFilter(LLVMUnhandledExceptionFilter);
SetConsoleCtrlHandler(LLVMConsoleCtrlHandler, TRUE);
+ // Environment variable to disable any kind of crash dialog.
+#ifdef _MSC_VER
+ if (getenv("LLVM_DISABLE_CRT_DEBUG")) {
+ _CrtSetReportHook(CRTReportHook);
+ ExitOnUnhandledExceptions = true;
+ }
+#endif
+
// IMPORTANT NOTE: Caller must call LeaveCriticalSection(&CriticalSection) or
// else multi-threading problems will ensue.
}
// RemoveFileOnSignal - The public API
-void sys::RemoveFileOnSignal(const std::string &Filename) {
+bool sys::RemoveFileOnSignal(const sys::Path &Filename, std::string* ErrMsg) {
RegisterHandler();
+ if (CleanupExecuted) {
+ if (ErrMsg)
+ *ErrMsg = "Process terminating -- cannot register for removal";
+ return true;
+ }
+
if (FilesToRemove == NULL)
- FilesToRemove = new std::vector<std::string>;
+ FilesToRemove = new std::vector<sys::Path>;
FilesToRemove->push_back(Filename);
LeaveCriticalSection(&CriticalSection);
+ return false;
}
-// RemoveDirectoryOnSignal - The public API
-void sys::RemoveDirectoryOnSignal(const sys::Path& path) {
+/// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
+/// SIGSEGV) is delivered to the process, print a stack trace and then exit.
+void sys::PrintStackTraceOnErrorSignal() {
RegisterHandler();
+ LeaveCriticalSection(&CriticalSection);
+}
- if (path.is_directory()) {
- if (DirectoriesToRemove == NULL)
- DirectoriesToRemove = new std::vector<sys::Path>;
-
- DirectoriesToRemove->push_back(path);
- }
+void sys::SetInterruptFunction(void (*IF)()) {
+ RegisterHandler();
+ InterruptFunction = IF;
LeaveCriticalSection(&CriticalSection);
}
-/// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
-/// SIGSEGV) is delivered to the process, print a stack trace and then exit.
-void sys::PrintStackTraceOnErrorSignal() {
+
+/// AddSignalHandler - Add a function to be called when a signal is delivered
+/// to the process. The handler can have a cookie passed to it to identify
+/// what instance of the handler it is.
+void sys::AddSignalHandler(void (*FnPtr)(void *), void *Cookie) {
+ if (CallBacksToRun == 0)
+ CallBacksToRun = new std::vector<std::pair<void(*)(void*), void*> >();
+ CallBacksToRun->push_back(std::make_pair(FnPtr, Cookie));
RegisterHandler();
LeaveCriticalSection(&CriticalSection);
}
-
}
static void Cleanup() {
EnterCriticalSection(&CriticalSection);
+ // Prevent other thread from registering new files and directories for
+ // removal, should we be executing because of the console handler callback.
+ CleanupExecuted = true;
+
+ // FIXME: open files cannot be deleted.
+
if (FilesToRemove != NULL)
while (!FilesToRemove->empty()) {
- try {
- std::remove(FilesToRemove->back().c_str());
- } catch (...) {
- }
+ FilesToRemove->back().eraseFromDisk();
FilesToRemove->pop_back();
}
- if (DirectoriesToRemove != NULL)
- while (!DirectoriesToRemove->empty()) {
- try {
- DirectoriesToRemove->back().destroy_directory(true);
- } catch (...) {
- }
- DirectoriesToRemove->pop_back();
- }
+ if (CallBacksToRun)
+ for (unsigned i = 0, e = CallBacksToRun->size(); i != e; ++i)
+ (*CallBacksToRun)[i].first((*CallBacksToRun)[i].second);
LeaveCriticalSection(&CriticalSection);
}
+void llvm::sys::RunInterruptHandlers() {
+ Cleanup();
+}
+
static LONG WINAPI LLVMUnhandledExceptionFilter(LPEXCEPTION_POINTERS ep) {
try {
Cleanup();
-
+
+#ifdef _WIN64
+ // TODO: provide a x64 friendly version of the following
+#else
+
// Initialize the STACKFRAME structure.
STACKFRAME StackFrame;
memset(&StackFrame, 0, sizeof(StackFrame));
// Initialize the symbol handler.
SymSetOptions(SYMOPT_DEFERRED_LOADS|SYMOPT_LOAD_LINES);
- SymInitialize(GetCurrentProcess(), NULL, TRUE);
+ SymInitialize(hProcess, NULL, TRUE);
while (true) {
if (!StackWalk(IMAGE_FILE_MACHINE_I386, hProcess, hThread, &StackFrame,
// Print the PC in hexadecimal.
DWORD PC = StackFrame.AddrPC.Offset;
- fprintf(stderr, "%04X:%08X", ep->ContextRecord->SegCs, PC);
+ fprintf(stderr, "%08lX", PC);
// Print the parameters. Assume there are four.
- fprintf(stderr, " (0x%08X 0x%08X 0x%08X 0x%08X)", StackFrame.Params[0],
+ fprintf(stderr, " (0x%08lX 0x%08lX 0x%08lX 0x%08lX)", StackFrame.Params[0],
StackFrame.Params[1], StackFrame.Params[2], StackFrame.Params[3]);
// Verify the PC belongs to a module in this process.
if (!SymGetModuleBase(hProcess, PC)) {
- fputc('\n', stderr);
+ fputs(" <unknown module>\n", stderr);
continue;
}
buffer[511] = 0;
if (dwDisp > 0)
- fprintf(stderr, ", %s()+%04d bytes(s)", symbol->Name, dwDisp);
+ fprintf(stderr, ", %s()+%04lu bytes(s)", symbol->Name, dwDisp);
else
fprintf(stderr, ", %s", symbol->Name);
memset(&line, 0, sizeof(line));
line.SizeOfStruct = sizeof(line);
if (SymGetLineFromAddr(hProcess, PC, &dwDisp, &line)) {
- fprintf(stderr, ", %s, line %d", line.FileName, line.LineNumber);
+ fprintf(stderr, ", %s, line %lu", line.FileName, line.LineNumber);
if (dwDisp > 0)
- fprintf(stderr, "+%04d byte(s)", dwDisp);
+ fprintf(stderr, "+%04lu byte(s)", dwDisp);
}
fputc('\n', stderr);
}
- }
- catch (...)
- {
- assert(!"Crashed in LLVMUnhandledExceptionFilter");
+
+#endif
+
+ } catch (...) {
+ assert(0 && "Crashed in LLVMUnhandledExceptionFilter");
}
+#ifdef _MSC_VER
+ if (ExitOnUnhandledExceptions)
+ _exit(-3);
+#endif
+
// Allow dialog box to pop up allowing choice to start debugger.
- return EXCEPTION_CONTINUE_SEARCH;
+ if (OldFilter)
+ return (*OldFilter)(ep);
+ else
+ return EXCEPTION_CONTINUE_SEARCH;
}
static BOOL WINAPI LLVMConsoleCtrlHandler(DWORD dwCtrlType) {
- // FIXME: This handler executes on a different thread. The main thread
- // is still running, potentially creating new files to be cleaned up
- // in the tiny window between the call to Cleanup() and process termination.
- // Also, any files currently open cannot be deleted.
+ // We are running in our very own thread, courtesy of Windows.
+ EnterCriticalSection(&CriticalSection);
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) {
+ // Note: if the interrupt function throws an exception, there is nothing
+ // to catch it in this thread so it will kill the process.
+ IF(); // Run it now.
+ LeaveCriticalSection(&CriticalSection);
+ return TRUE; // Don't kill the process.
+ }
+
// Allow normal processing to take place; i.e., the process dies.
+ LeaveCriticalSection(&CriticalSection);
return FALSE;
}
-// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
projects / oota-llvm.git / blobdiff