sneedmc/WinBacktrace.h
Andrew 5099964c67 Implement backtraces on Windows.
Much !!FUN!! was had
2014-05-10 14:16:27 -05:00

45 lines
1.5 KiB
C

/* Copyright 2014 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <windows.h>
#ifndef SF_STR_LEN
// The max length of all strings in the StackFrame struct.
// Because it must be stack allocated, this must be known at compile time.
// Stuff longer than this will be truncated.
// Defaults to 4096 (4kB)
#define SF_STR_LEN 4096
#endif
// Data structure for holding information about a stack frame.
// There's some more hackery in here so it can be allocated on the stack.
struct StackFrame
{
// The address of this stack frame.
void* address;
// The name of the function at this address.
char funcName[SF_STR_LEN];
};
// This function walks through the given CONTEXT structure, extracting a
// backtrace from it.
// The backtrace will be put into the array given by the `stack` argument
// with a maximum length of `size`.
// This function returns the size of the backtrace retrieved.
size_t getBacktrace(StackFrame* stack, size_t size, CONTEXT ctx);