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sandboxed-api/sandboxed_api/sandbox2/unwind
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Christian Blichmann eb62bae167 Refactor stack trace handling 
- Drop `delim` argument from the `GetStackTrace()` family of functions.
  We only ever used plain spaces.
- Use an `std::vector<std::string>` for the symbolized stack frames and
  adjust the unwind proto accordingly.

This change now prints each stack frame on its own line while skipping
duplicate ones:

```
I20200717 11:47:16.811381 3636246 monitor.cc:326] Stack trace: [
I20200717 11:47:16.811415 3636246 monitor.cc:337]   map:/lib/x86_64-linux-gnu/libc-2.30.so+0xceee7(0x7fb871602ee7)
I20200717 11:47:16.811420 3636246 monitor.cc:337]   Rot13File+0x130(0x55ed24615995)
I20200717 11:47:16.811424 3636246 monitor.cc:337]   ffi_call_unix64+0x55(0x55ed2461f2dd)
I20200717 11:47:16.811429 3636246 monitor.cc:337]   map:[stack]+0x1ec80(0x7ffee4257c80)
I20200717 11:47:16.811455 3636246 monitor.cc:339]   (last frame repeated 196 times)
I20200717 11:47:16.811460 3636246 monitor.cc:347] ]
```

PiperOrigin-RevId: 322089140
Change-Id: I05b0de2f4118fed90fe920c06bbd70ea0d1119e2
2020-07-20 00:24:40 -07:00
..
BUILD.bazel Fix ptrace_hook dependency graph 2020-07-17 03:20:43 -07:00
CMakeLists.txt Fix ptrace_hook dependency graph 2020-07-17 03:20:43 -07:00
ptrace_hook.cc Update license header with recommended best practices 2020-01-17 05:05:29 -08:00
ptrace_hook.h Update license header with recommended best practices 2020-01-17 05:05:29 -08:00
unwind.cc Refactor stack trace handling 2020-07-20 00:24:40 -07:00
unwind.h Refactor stack trace handling 2020-07-20 00:24:40 -07:00
unwind.proto Refactor stack trace handling 2020-07-20 00:24:40 -07:00