1bf55f2af7
When debugging, if an expression hits a SIGABRT, it the expression ends up completing and stopping due the the "SIGABRT". Then the next thing that runs (another expression, or continuing the program) ends up progating the SIGABRT and causing the parent processes to die. We should probably think of a different solution where we suppress any signal that resulted due to an expression, or we modifyin the UnixSignals class to contain a row for "suppress for expression". So the settings for SIGABRT are: suppress = true, stop = true, and notify = true. llvm-svn: 123157
294 lines
9.3 KiB
C++
294 lines
9.3 KiB
C++
//===-- UnixSignals.cpp -----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Target/UnixSignals.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Interpreter/Args.h"
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using namespace lldb_private;
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UnixSignals::Signal::Signal
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(
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const char *name,
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const char *short_name,
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bool default_suppress,
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bool default_stop,
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bool default_notify,
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const char *description
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) :
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m_name (name),
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m_short_name (short_name),
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m_description (),
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m_suppress (default_suppress),
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m_stop (default_stop),
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m_notify (default_notify)
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{
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if (description)
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m_description.assign (description);
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}
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//----------------------------------------------------------------------
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// UnixSignals constructor
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//----------------------------------------------------------------------
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UnixSignals::UnixSignals ()
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{
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Reset ();
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}
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//----------------------------------------------------------------------
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// Destructor
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//----------------------------------------------------------------------
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UnixSignals::~UnixSignals ()
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{
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}
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void
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UnixSignals::Reset ()
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{
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// This builds one standard set of Unix Signals. If yours aren't quite in this
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// order, you can either subclass this class, and use Add & Remove to change them
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// or you can subclass and build them afresh in your constructor;
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m_signals.clear();
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// SIGNO NAME SHORT NAME SUPPRESS STOP NOTIFY DESCRIPTION
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// ====== ============ ========== ========= ====== ====== ===================================================
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AddSignal (1, "SIGHUP", "HUP", false, true, true, "hangup");
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AddSignal (2, "SIGINT", "INT", true, true, true, "interrupt");
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AddSignal (3, "SIGQUIT", "QUIT", false, true, true, "quit");
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AddSignal (4, "SIGILL", "ILL", false, true, true, "illegal instruction");
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AddSignal (5, "SIGTRAP", "TRAP", true, true, true, "trace trap (not reset when caught)");
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AddSignal (6, "SIGABRT", "ABRT", true, true, true, "abort()");
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AddSignal (7, "SIGEMT", "EMT", false, true, true, "pollable event");
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AddSignal (8, "SIGFPE", "FPE", false, true, true, "floating point exception");
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AddSignal (9, "SIGKILL", "KILL", false, true, true, "kill");
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AddSignal (10, "SIGBUS", "BUS", false, true, true, "bus error");
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AddSignal (11, "SIGSEGV", "SEGV", false, true, true, "segmentation violation");
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AddSignal (12, "SIGSYS", "SYS", false, true, true, "bad argument to system call");
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AddSignal (13, "SIGPIPE", "PIPE", false, true, true, "write on a pipe with no one to read it");
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AddSignal (14, "SIGALRM", "ALRM", false, false, true, "alarm clock");
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AddSignal (15, "SIGTERM", "TERM", false, true, true, "software termination signal from kill");
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AddSignal (16, "SIGURG", "URG", false, false, false, "urgent condition on IO channel");
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AddSignal (17, "SIGSTOP", "STOP", false, true, true, "sendable stop signal not from tty");
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AddSignal (18, "SIGTSTP", "TSTP", false, true, true, "stop signal from tty");
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AddSignal (19, "SIGCONT", "CONT", false, true, true, "continue a stopped process");
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AddSignal (20, "SIGCHLD", "CHLD", false, false, true, "to parent on child stop or exit");
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AddSignal (21, "SIGTTIN", "TTIN", false, true, true, "to readers process group upon background tty read");
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AddSignal (22, "SIGTTOU", "TTOU", false, true, true, "to readers process group upon background tty write");
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AddSignal (23, "SIGIO", "IO", false, false, false, "input/output possible signal");
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AddSignal (24, "SIGXCPU", "XCPU", false, true, true, "exceeded CPU time limit");
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AddSignal (25, "SIGXFSZ", "XFSZ", false, true, true, "exceeded file size limit");
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AddSignal (26, "SIGVTALRM", "VTALRM", false, false, false, "virtual time alarm");
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AddSignal (27, "SIGPROF", "PROF", false, false, false, "profiling time alarm");
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AddSignal (28, "SIGWINCH", "WINCH", false, false, false, "window size changes");
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AddSignal (29, "SIGINFO", "INFO", false, true, true, "information request");
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AddSignal (30, "SIGUSR1", "USR1", false, true, true, "user defined signal 1");
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AddSignal (31, "SIGUSR2", "USR2", false, true, true, "user defined signal 2");
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}
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void
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UnixSignals::AddSignal
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(
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int signo,
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const char *name,
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const char *short_name,
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bool default_suppress,
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bool default_stop,
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bool default_notify,
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const char *description
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)
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{
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Signal new_signal (name, short_name, default_suppress, default_stop, default_notify, description);
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m_signals.insert (std::make_pair(signo, new_signal));
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}
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void
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UnixSignals::RemoveSignal (int signo)
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{
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collection::iterator pos = m_signals.find (signo);
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if (pos != m_signals.end())
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m_signals.erase (pos);
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}
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const char *
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UnixSignals::GetSignalAsCString (int signo) const
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{
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collection::const_iterator pos = m_signals.find (signo);
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if (pos == m_signals.end())
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return NULL;
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else
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return pos->second.m_name.GetCString ();
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}
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bool
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UnixSignals::SignalIsValid (int32_t signo) const
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{
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return m_signals.find (signo) != m_signals.end();
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}
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int32_t
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UnixSignals::GetSignalNumberFromName (const char *name) const
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{
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ConstString const_name (name);
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collection::const_iterator pos, end = m_signals.end ();
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for (pos = m_signals.begin (); pos != end; pos++)
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{
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if ((const_name == pos->second.m_name) || (const_name == pos->second.m_short_name))
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return pos->first;
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}
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const int32_t signo = Args::StringToSInt32(name, LLDB_INVALID_SIGNAL_NUMBER, 0);
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if (signo != LLDB_INVALID_SIGNAL_NUMBER)
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return signo;
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return LLDB_INVALID_SIGNAL_NUMBER;
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}
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int32_t
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UnixSignals::GetFirstSignalNumber () const
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{
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if (m_signals.empty())
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return LLDB_INVALID_SIGNAL_NUMBER;
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return (*m_signals.begin ()).first;
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}
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int32_t
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UnixSignals::GetNextSignalNumber (int32_t current_signal) const
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{
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collection::const_iterator pos = m_signals.find (current_signal);
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collection::const_iterator end = m_signals.end();
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if (pos == end)
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return LLDB_INVALID_SIGNAL_NUMBER;
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else
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{
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pos++;
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if (pos == end)
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return LLDB_INVALID_SIGNAL_NUMBER;
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else
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return pos->first;
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}
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}
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const char *
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UnixSignals::GetSignalInfo
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(
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int32_t signo,
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bool &should_suppress,
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bool &should_stop,
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bool &should_notify
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) const
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{
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collection::const_iterator pos = m_signals.find (signo);
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if (pos == m_signals.end())
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return NULL;
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else
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{
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const Signal &signal = pos->second;
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should_suppress = signal.m_suppress;
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should_stop = signal.m_stop;
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should_notify = signal.m_notify;
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return signal.m_name.AsCString("");
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}
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}
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bool
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UnixSignals::GetShouldSuppress (int signo) const
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{
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collection::const_iterator pos = m_signals.find (signo);
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if (pos != m_signals.end())
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return pos->second.m_suppress;
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return false;
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}
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bool
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UnixSignals::SetShouldSuppress (int signo, bool value)
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{
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collection::iterator pos = m_signals.find (signo);
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if (pos != m_signals.end())
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{
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pos->second.m_suppress = value;
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return true;
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}
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return false;
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}
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bool
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UnixSignals::SetShouldSuppress (const char *signal_name, bool value)
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{
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const int32_t signo = GetSignalNumberFromName (signal_name);
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if (signo != LLDB_INVALID_SIGNAL_NUMBER)
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return SetShouldSuppress (signo, value);
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return false;
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}
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bool
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UnixSignals::GetShouldStop (int signo) const
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{
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collection::const_iterator pos = m_signals.find (signo);
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if (pos != m_signals.end())
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return pos->second.m_stop;
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return false;
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}
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bool
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UnixSignals::SetShouldStop (int signo, bool value)
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{
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collection::iterator pos = m_signals.find (signo);
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if (pos != m_signals.end())
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{
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pos->second.m_stop = value;
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return true;
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}
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return false;
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}
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bool
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UnixSignals::SetShouldStop (const char *signal_name, bool value)
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{
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const int32_t signo = GetSignalNumberFromName (signal_name);
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if (signo != LLDB_INVALID_SIGNAL_NUMBER)
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return SetShouldStop (signo, value);
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return false;
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}
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bool
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UnixSignals::GetShouldNotify (int signo) const
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{
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collection::const_iterator pos = m_signals.find (signo);
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if (pos != m_signals.end())
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return pos->second.m_notify;
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return false;
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}
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bool
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UnixSignals::SetShouldNotify (int signo, bool value)
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{
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collection::iterator pos = m_signals.find (signo);
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if (pos != m_signals.end())
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{
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pos->second.m_notify = value;
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return true;
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}
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return false;
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}
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bool
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UnixSignals::SetShouldNotify (const char *signal_name, bool value)
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{
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const int32_t signo = GetSignalNumberFromName (signal_name);
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if (signo != LLDB_INVALID_SIGNAL_NUMBER)
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return SetShouldNotify (signo, value);
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return false;
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}
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