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Merge pull request #66334 from al45tair/eng/PR-110261430
[Backtracing][Linux] Add Linux crash handler to the runtime.
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//===--- CrashInfo.h - Swift Backtracing Crash Information ------*- C++ -*-===// | ||
// | ||
// This source file is part of the Swift.org open source project | ||
// | ||
// Copyright (c) 2023 Apple Inc. and the Swift project authors | ||
// Licensed under Apache License v2.0 with Runtime Library Exception | ||
// | ||
// See https://swift.org/LICENSE.txt for license information | ||
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors | ||
// | ||
//===----------------------------------------------------------------------===// | ||
// | ||
// Defines the CrashInfo type that holds information about why the program | ||
// crashed. | ||
// | ||
//===----------------------------------------------------------------------===// | ||
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#ifndef SWIFT_CRASHINFO_H | ||
#define SWIFT_CRASHINFO_H | ||
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#include <inttypes.h> | ||
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#ifdef __cplusplus | ||
namespace swift { | ||
namespace runtime { | ||
namespace backtrace { | ||
extern "C" { | ||
#endif | ||
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// Note: The "pointers" below are pointers in a different process's address | ||
// space, which might not even share our bitness. That is why they are | ||
// `uint64_t`s, rather than pointers or `uintptr_t`s. | ||
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// The address of this structure in memory is passed to swift-backtrace. | ||
struct CrashInfo { | ||
// The thread ID for the crashing thread. | ||
uint64_t crashing_thread; | ||
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// The signal number corresponding to this crash. | ||
uint64_t signal; | ||
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// The fault address. | ||
uint64_t fault_address; | ||
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#ifdef __APPLE__ | ||
// Points to the mcontext_t structure for the crashing thread; other | ||
// threads' contexts can be recovered using Mach APIs later. | ||
uint64_t mctx; | ||
#elif defined(__linux__) | ||
// The head of the thread list; points at a "struct thread" (see below). | ||
uint64_t thread_list; | ||
#endif | ||
}; | ||
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#ifdef __linux__ | ||
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// A memory server request packet. | ||
struct memserver_req { | ||
// Address to read. | ||
uint64_t addr; | ||
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// Number of bytes to read. | ||
uint64_t len; | ||
}; | ||
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// A memory server response packet. | ||
struct memserver_resp { | ||
// Address that was read from. | ||
uint64_t addr; | ||
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// Number of bytes, *or* negative to indicate an error. | ||
int64_t len; | ||
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// Followed by len bytes of data if len > 0 | ||
}; | ||
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// Holds details of a running thread. | ||
struct thread { | ||
// Points at the next thread. | ||
uint64_t next; | ||
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// The thread ID for this thread. | ||
int64_t tid; | ||
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// Points to the Linux ucontext_t structure. | ||
uint64_t uctx; | ||
}; | ||
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#endif | ||
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#ifdef __cplusplus | ||
} // extern "C" | ||
} // namespace backtrace | ||
} // namespace runtime | ||
} // namespace swift | ||
#endif | ||
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#endif // SWIFT_CRASHINFO_H |
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