diff options
| -rw-r--r-- | llvm/lib/Support/Signals.cpp | 53 | ||||
| -rw-r--r-- | llvm/support/lib/Support/Signals.cpp | 53 |
2 files changed, 106 insertions, 0 deletions
diff --git a/llvm/lib/Support/Signals.cpp b/llvm/lib/Support/Signals.cpp new file mode 100644 index 00000000000..8aa1b6047ab --- /dev/null +++ b/llvm/lib/Support/Signals.cpp @@ -0,0 +1,53 @@ +//===- Signals.cpp - Signal Handling support ------------------------------===// +// +// This file defines some helpful functions for dealing with the possibility of +// unix signals occuring while your program is running. +// +//===----------------------------------------------------------------------===// + +#include "Support/Signals.h" +#include <vector> +#include <algorithm> +#include <cstdlib> +#include <cstdio> +#include <signal.h> + +static vector<string> FilesToRemove; + +// IntSigs - Signals that may interrupt the program at any time. +static const int IntSigs[] = { + SIGHUP, SIGINT, SIGQUIT, SIGKILL, SIGPIPE, SIGTERM, SIGUSR1, SIGUSR2 +}; +static const int *IntSigsEnd = IntSigs + sizeof(IntSigs)/sizeof(IntSigs[0]); + +// KillSigs - Signals that are synchronous with the program that will cause it +// to die. +static const int KillSigs[] = { + SIGILL, SIGTRAP, SIGABRT, SIGEMT, SIGFPE, + SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ +}; +static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]); + + +// SignalHandler - The signal handler that runs... +static void SignalHandler(int Sig) { + while (!FilesToRemove.empty()) { + std::remove(FilesToRemove.back().c_str()); + FilesToRemove.pop_back(); + } + + if (find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd) + exit(1); // If this is an interrupt signal, exit the program + + // Otherwise if it is a fault (like SEGV) reissue the signal to die... +} + +static void RegisterHandler(int Signal) { signal(Signal, SignalHandler); } + +// RemoveFileOnSignal - The public API +void RemoveFileOnSignal(const string &Filename) { + FilesToRemove.push_back(Filename); + + for_each(IntSigs, IntSigsEnd, RegisterHandler); + for_each(KillSigs, KillSigsEnd, RegisterHandler); +} diff --git a/llvm/support/lib/Support/Signals.cpp b/llvm/support/lib/Support/Signals.cpp new file mode 100644 index 00000000000..8aa1b6047ab --- /dev/null +++ b/llvm/support/lib/Support/Signals.cpp @@ -0,0 +1,53 @@ +//===- Signals.cpp - Signal Handling support ------------------------------===// +// +// This file defines some helpful functions for dealing with the possibility of +// unix signals occuring while your program is running. +// +//===----------------------------------------------------------------------===// + +#include "Support/Signals.h" +#include <vector> +#include <algorithm> +#include <cstdlib> +#include <cstdio> +#include <signal.h> + +static vector<string> FilesToRemove; + +// IntSigs - Signals that may interrupt the program at any time. +static const int IntSigs[] = { + SIGHUP, SIGINT, SIGQUIT, SIGKILL, SIGPIPE, SIGTERM, SIGUSR1, SIGUSR2 +}; +static const int *IntSigsEnd = IntSigs + sizeof(IntSigs)/sizeof(IntSigs[0]); + +// KillSigs - Signals that are synchronous with the program that will cause it +// to die. +static const int KillSigs[] = { + SIGILL, SIGTRAP, SIGABRT, SIGEMT, SIGFPE, + SIGBUS, SIGSEGV, SIGSYS, SIGXCPU, SIGXFSZ +}; +static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]); + + +// SignalHandler - The signal handler that runs... +static void SignalHandler(int Sig) { + while (!FilesToRemove.empty()) { + std::remove(FilesToRemove.back().c_str()); + FilesToRemove.pop_back(); + } + + if (find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd) + exit(1); // If this is an interrupt signal, exit the program + + // Otherwise if it is a fault (like SEGV) reissue the signal to die... +} + +static void RegisterHandler(int Signal) { signal(Signal, SignalHandler); } + +// RemoveFileOnSignal - The public API +void RemoveFileOnSignal(const string &Filename) { + FilesToRemove.push_back(Filename); + + for_each(IntSigs, IntSigsEnd, RegisterHandler); + for_each(KillSigs, KillSigsEnd, RegisterHandler); +} |
