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73 lines
2.8 KiB
73 lines
2.8 KiB
//===- llvm/Support/PrettyStackTrace.h - Pretty Crash Handling --*- 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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//
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// This file defines the PrettyStackTraceEntry class, which is used to make
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// crashes give more contextual information about what the program was doing
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// when it crashed.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_PRETTYSTACKTRACE_H
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#define LLVM_SUPPORT_PRETTYSTACKTRACE_H
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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class raw_ostream;
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/// DisablePrettyStackTrace - Set this to true to disable this module. This
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/// might be necessary if the host application installs its own signal
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/// handlers which conflict with the ones installed by this module.
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/// Defaults to false.
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extern bool DisablePrettyStackTrace;
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/// PrettyStackTraceEntry - This class is used to represent a frame of the
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/// "pretty" stack trace that is dumped when a program crashes. You can define
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/// subclasses of this and declare them on the program stack: when they are
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/// constructed and destructed, they will add their symbolic frames to a
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/// virtual stack trace. This gets dumped out if the program crashes.
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class PrettyStackTraceEntry {
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const PrettyStackTraceEntry *NextEntry;
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PrettyStackTraceEntry(const PrettyStackTraceEntry &) LLVM_DELETED_FUNCTION;
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void operator=(const PrettyStackTraceEntry&) LLVM_DELETED_FUNCTION;
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public:
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PrettyStackTraceEntry();
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virtual ~PrettyStackTraceEntry();
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/// print - Emit information about this stack frame to OS.
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virtual void print(raw_ostream &OS) const = 0;
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/// getNextEntry - Return the next entry in the list of frames.
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const PrettyStackTraceEntry *getNextEntry() const { return NextEntry; }
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};
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/// PrettyStackTraceString - This object prints a specified string (which
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/// should not contain newlines) to the stream as the stack trace when a crash
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/// occurs.
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class PrettyStackTraceString : public PrettyStackTraceEntry {
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const char *Str;
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public:
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PrettyStackTraceString(const char *str) : Str(str) {}
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virtual void print(raw_ostream &OS) const LLVM_OVERRIDE;
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};
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/// PrettyStackTraceProgram - This object prints a specified program arguments
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/// to the stream as the stack trace when a crash occurs.
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class PrettyStackTraceProgram : public PrettyStackTraceEntry {
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int ArgC;
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const char *const *ArgV;
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public:
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PrettyStackTraceProgram(int argc, const char * const*argv)
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: ArgC(argc), ArgV(argv) {}
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virtual void print(raw_ostream &OS) const LLVM_OVERRIDE;
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};
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} // end namespace llvm
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#endif
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