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Diffstat (limited to 'llvm/lib/Support/Unix/Signals.inc')
-rw-r--r--llvm/lib/Support/Unix/Signals.inc113
1 files changed, 58 insertions, 55 deletions
diff --git a/llvm/lib/Support/Unix/Signals.inc b/llvm/lib/Support/Unix/Signals.inc
index bf145bffe8bf..05a7335216f4 100644
--- a/llvm/lib/Support/Unix/Signals.inc
+++ b/llvm/lib/Support/Unix/Signals.inc
@@ -48,7 +48,7 @@
#include <algorithm>
#include <string>
#ifdef HAVE_BACKTRACE
-# include BACKTRACE_HEADER // For backtrace().
+#include BACKTRACE_HEADER // For backtrace().
#endif
#if HAVE_SIGNAL_H
#include <signal.h>
@@ -79,8 +79,8 @@
using namespace llvm;
-static void SignalHandler(int Sig); // defined below.
-static void InfoSignalHandler(int Sig); // defined below.
+static void SignalHandler(int Sig); // defined below.
+static void InfoSignalHandler(int Sig); // defined below.
using SignalHandlerFunctionType = void (*)();
/// The function to call if ctrl-c is pressed.
@@ -208,40 +208,45 @@ static StringRef Argv0;
/// Signals that represent requested termination. There's no bug or failure, or
/// if there is, it's not our direct responsibility. For whatever reason, our
/// continued execution is no longer desirable.
-static const int IntSigs[] = {
- SIGHUP, SIGINT, SIGTERM, SIGUSR2
-};
+static const int IntSigs[] = {SIGHUP, SIGINT, SIGTERM, SIGUSR2};
/// Signals that represent that we have a bug, and our prompt termination has
/// been ordered.
-static const int KillSigs[] = {
- SIGILL, SIGTRAP, SIGABRT, SIGFPE, SIGBUS, SIGSEGV, SIGQUIT
+static const int KillSigs[] = {SIGILL,
+ SIGTRAP,
+ SIGABRT,
+ SIGFPE,
+ SIGBUS,
+ SIGSEGV,
+ SIGQUIT
#ifdef SIGSYS
- , SIGSYS
+ ,
+ SIGSYS
#endif
#ifdef SIGXCPU
- , SIGXCPU
+ ,
+ SIGXCPU
#endif
#ifdef SIGXFSZ
- , SIGXFSZ
+ ,
+ SIGXFSZ
#endif
#ifdef SIGEMT
- , SIGEMT
+ ,
+ SIGEMT
#endif
};
/// Signals that represent requests for status.
-static const int InfoSigs[] = {
- SIGUSR1
+static const int InfoSigs[] = {SIGUSR1
#ifdef SIGINFO
- , SIGINFO
+ ,
+ SIGINFO
#endif
};
-static const size_t NumSigs =
- array_lengthof(IntSigs) + array_lengthof(KillSigs) +
- array_lengthof(InfoSigs) + 1 /* SIGPIPE */;
-
+static const size_t NumSigs = std::size(IntSigs) + std::size(KillSigs) +
+ std::size(InfoSigs) + 1 /* SIGPIPE */;
static std::atomic<unsigned> NumRegisteredSignals = ATOMIC_VAR_INIT(0);
static struct {
@@ -298,7 +303,7 @@ static void RegisterHandlers() { // Not signal-safe.
enum class SignalKind { IsKill, IsInfo };
auto registerHandler = [&](int Signal, SignalKind Kind) {
unsigned Index = NumRegisteredSignals.load();
- assert(Index < array_lengthof(RegisteredSignalInfo) &&
+ assert(Index < std::size(RegisteredSignalInfo) &&
"Out of space for signal handlers!");
struct sigaction NewHandler;
@@ -334,8 +339,8 @@ static void RegisterHandlers() { // Not signal-safe.
void sys::unregisterHandlers() {
// Restore all of the signal handlers to how they were before we showed up.
for (unsigned i = 0, e = NumRegisteredSignals.load(); i != e; ++i) {
- sigaction(RegisteredSignalInfo[i].SigNo,
- &RegisteredSignalInfo[i].SA, nullptr);
+ sigaction(RegisteredSignalInfo[i].SigNo, &RegisteredSignalInfo[i].SA,
+ nullptr);
--NumRegisteredSignals;
}
}
@@ -407,14 +412,12 @@ static void SignalHandler(int Sig) {
}
static void InfoSignalHandler(int Sig) {
- SaveAndRestore<int> SaveErrnoDuringASignalHandler(errno);
+ SaveAndRestore SaveErrnoDuringASignalHandler(errno);
if (SignalHandlerFunctionType CurrentInfoFunction = InfoSignalFunction)
CurrentInfoFunction();
}
-void llvm::sys::RunInterruptHandlers() {
- RemoveFilesToRemove();
-}
+void llvm::sys::RunInterruptHandlers() { RemoveFilesToRemove(); }
void llvm::sys::SetInterruptFunction(void (*IF)()) {
InterruptFunction.exchange(IF);
@@ -432,17 +435,12 @@ void llvm::sys::SetOneShotPipeSignalFunction(void (*Handler)()) {
}
void llvm::sys::DefaultOneShotPipeSignalHandler() {
- // UNIX03 conformance requires a non-zero exit code and an error message
- // to stderr when writing to a closed stdout fails.
- errs() << "error: write on a pipe with no reader\n";
-
// Send a special return code that drivers can check for, from sysexits.h.
exit(EX_IOERR);
}
// The public API
-bool llvm::sys::RemoveFileOnSignal(StringRef Filename,
- std::string* ErrMsg) {
+bool llvm::sys::RemoveFileOnSignal(StringRef Filename, std::string *ErrMsg) {
// Ensure that cleanup will occur as soon as one file is added.
static ManagedStatic<FilesToRemoveCleanup> FilesToRemoveCleanup;
*FilesToRemoveCleanup;
@@ -465,7 +463,7 @@ void llvm::sys::AddSignalHandler(sys::SignalHandlerCallback FnPtr,
RegisterHandlers();
}
-#if defined(HAVE_BACKTRACE) && ENABLE_BACKTRACES && HAVE_LINK_H && \
+#if defined(HAVE_BACKTRACE) && ENABLE_BACKTRACES && HAVE_LINK_H && \
(defined(__linux__) || defined(__FreeBSD__) || \
defined(__FreeBSD_kernel__) || defined(__NetBSD__))
struct DlIteratePhdrData {
@@ -478,7 +476,7 @@ struct DlIteratePhdrData {
};
static int dl_iterate_phdr_cb(dl_phdr_info *info, size_t size, void *arg) {
- DlIteratePhdrData *data = (DlIteratePhdrData*)arg;
+ DlIteratePhdrData *data = (DlIteratePhdrData *)arg;
const char *name = data->first ? data->main_exec_name : info->dlpi_name;
data->first = false;
for (int i = 0; i < info->dlpi_phnum; i++) {
@@ -566,13 +564,13 @@ void llvm::sys::PrintStackTrace(raw_ostream &OS, int Depth) {
#if defined(HAVE_BACKTRACE)
// Use backtrace() to output a backtrace on Linux systems with glibc.
if (!depth)
- depth = backtrace(StackTrace, static_cast<int>(array_lengthof(StackTrace)));
+ depth = backtrace(StackTrace, static_cast<int>(std::size(StackTrace)));
#endif
#if defined(HAVE__UNWIND_BACKTRACE)
// Try _Unwind_Backtrace() if backtrace() failed.
if (!depth)
- depth = unwindBacktrace(StackTrace,
- static_cast<int>(array_lengthof(StackTrace)));
+ depth =
+ unwindBacktrace(StackTrace, static_cast<int>(std::size(StackTrace)));
#endif
if (!depth)
return;
@@ -590,13 +588,16 @@ void llvm::sys::PrintStackTrace(raw_ostream &OS, int Depth) {
for (int i = 0; i < depth; ++i) {
Dl_info dlinfo;
dladdr(StackTrace[i], &dlinfo);
- const char* name = strrchr(dlinfo.dli_fname, '/');
+ const char *name = strrchr(dlinfo.dli_fname, '/');
int nwidth;
- if (!name) nwidth = strlen(dlinfo.dli_fname);
- else nwidth = strlen(name) - 1;
+ if (!name)
+ nwidth = strlen(dlinfo.dli_fname);
+ else
+ nwidth = strlen(name) - 1;
- if (nwidth > width) width = nwidth;
+ if (nwidth > width)
+ width = nwidth;
}
for (int i = 0; i < depth; ++i) {
@@ -605,23 +606,27 @@ void llvm::sys::PrintStackTrace(raw_ostream &OS, int Depth) {
OS << format("%-2d", i);
- const char* name = strrchr(dlinfo.dli_fname, '/');
- if (!name) OS << format(" %-*s", width, dlinfo.dli_fname);
- else OS << format(" %-*s", width, name+1);
+ const char *name = strrchr(dlinfo.dli_fname, '/');
+ if (!name)
+ OS << format(" %-*s", width, dlinfo.dli_fname);
+ else
+ OS << format(" %-*s", width, name + 1);
- OS << format(" %#0*lx", (int)(sizeof(void*) * 2) + 2,
+ OS << format(" %#0*lx", (int)(sizeof(void *) * 2) + 2,
(unsigned long)StackTrace[i]);
if (dlinfo.dli_sname != nullptr) {
OS << ' ';
int res;
- char* d = itaniumDemangle(dlinfo.dli_sname, nullptr, nullptr, &res);
- if (!d) OS << dlinfo.dli_sname;
- else OS << d;
+ char *d = itaniumDemangle(dlinfo.dli_sname, nullptr, nullptr, &res);
+ if (!d)
+ OS << dlinfo.dli_sname;
+ else
+ OS << d;
free(d);
- OS << format(" + %tu", (static_cast<const char*>(StackTrace[i])-
- static_cast<const char*>(dlinfo.dli_saddr)));
+ OS << format(" + %tu", (static_cast<const char *>(StackTrace[i]) -
+ static_cast<const char *>(dlinfo.dli_saddr)));
}
OS << '\n';
}
@@ -652,11 +657,9 @@ void llvm::sys::PrintStackTraceOnErrorSignal(StringRef Argv0,
exception_mask_t mask = EXC_MASK_CRASH;
- kern_return_t ret = task_set_exception_ports(self,
- mask,
- MACH_PORT_NULL,
- EXCEPTION_STATE_IDENTITY | MACH_EXCEPTION_CODES,
- THREAD_STATE_NONE);
+ kern_return_t ret = task_set_exception_ports(
+ self, mask, MACH_PORT_NULL,
+ EXCEPTION_STATE_IDENTITY | MACH_EXCEPTION_CODES, THREAD_STATE_NONE);
(void)ret;
}
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-15 04:20:56 +0000