mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
9a8b13d076
This patch fixes the linkage for __crashtracer_info__, making it have the proper mangling (extern "C") and linkage (private extern). It also adds a new PrettyStackTrace type, allowing LLDB to adopt this instead of Host::SetCrashDescriptionWithFormat(). Without this patch, CrashTracer on macOS won't pick up pretty stack traces from any LLVM client. An LLDB commit adopting this API will follow shortly. Differential Revision: https://reviews.llvm.org/D27683 llvm-svn: 289689
97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
//===- llvm/Support/PrettyStackTrace.h - Pretty Crash Handling --*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the PrettyStackTraceEntry class, which is used to make
|
|
// crashes give more contextual information about what the program was doing
|
|
// when it crashed.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_PRETTYSTACKTRACE_H
|
|
#define LLVM_SUPPORT_PRETTYSTACKTRACE_H
|
|
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/Support/Compiler.h"
|
|
|
|
namespace llvm {
|
|
class raw_ostream;
|
|
|
|
void EnablePrettyStackTrace();
|
|
|
|
/// PrettyStackTraceEntry - This class is used to represent a frame of the
|
|
/// "pretty" stack trace that is dumped when a program crashes. You can define
|
|
/// subclasses of this and declare them on the program stack: when they are
|
|
/// constructed and destructed, they will add their symbolic frames to a
|
|
/// virtual stack trace. This gets dumped out if the program crashes.
|
|
class PrettyStackTraceEntry {
|
|
friend PrettyStackTraceEntry *ReverseStackTrace(PrettyStackTraceEntry *);
|
|
|
|
PrettyStackTraceEntry *NextEntry;
|
|
PrettyStackTraceEntry(const PrettyStackTraceEntry &) = delete;
|
|
void operator=(const PrettyStackTraceEntry &) = delete;
|
|
public:
|
|
PrettyStackTraceEntry();
|
|
virtual ~PrettyStackTraceEntry();
|
|
|
|
/// print - Emit information about this stack frame to OS.
|
|
virtual void print(raw_ostream &OS) const = 0;
|
|
|
|
/// getNextEntry - Return the next entry in the list of frames.
|
|
const PrettyStackTraceEntry *getNextEntry() const { return NextEntry; }
|
|
};
|
|
|
|
/// PrettyStackTraceString - This object prints a specified string (which
|
|
/// should not contain newlines) to the stream as the stack trace when a crash
|
|
/// occurs.
|
|
class PrettyStackTraceString : public PrettyStackTraceEntry {
|
|
const char *Str;
|
|
public:
|
|
PrettyStackTraceString(const char *str) : Str(str) {}
|
|
void print(raw_ostream &OS) const override;
|
|
};
|
|
|
|
/// PrettyStackTraceFormat - This object prints a string (which may use
|
|
/// printf-style formatting but should not contain newlines) to the stream
|
|
/// as the stack trace when a crash occurs.
|
|
class PrettyStackTraceFormat : public PrettyStackTraceEntry {
|
|
llvm::SmallVector<char, 32> Str;
|
|
public:
|
|
PrettyStackTraceFormat(const char *Format, ...);
|
|
void print(raw_ostream &OS) const override;
|
|
};
|
|
|
|
/// PrettyStackTraceProgram - This object prints a specified program arguments
|
|
/// to the stream as the stack trace when a crash occurs.
|
|
class PrettyStackTraceProgram : public PrettyStackTraceEntry {
|
|
int ArgC;
|
|
const char *const *ArgV;
|
|
public:
|
|
PrettyStackTraceProgram(int argc, const char * const*argv)
|
|
: ArgC(argc), ArgV(argv) {
|
|
EnablePrettyStackTrace();
|
|
}
|
|
void print(raw_ostream &OS) const override;
|
|
};
|
|
|
|
/// Returns the topmost element of the "pretty" stack state.
|
|
const void *SavePrettyStackState();
|
|
|
|
/// Restores the topmost element of the "pretty" stack state to State, which
|
|
/// should come from a previous call to SavePrettyStackState(). This is
|
|
/// useful when using a CrashRecoveryContext in code that also uses
|
|
/// PrettyStackTraceEntries, to make sure the stack that's printed if a crash
|
|
/// happens after a crash that's been recovered by CrashRecoveryContext
|
|
/// doesn't have frames on it that were added in code unwound by the
|
|
/// CrashRecoveryContext.
|
|
void RestorePrettyStackState(const void *State);
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|