thread/mtcore_thread/core.hpp

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/*
 
Copyright 2025 Matthew Tolman
 
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.
 
*/
 
#ifndef MTCORE_THREAD_CORE_HPP
#define MTCORE_THREAD_CORE_HPP
 
#include <mutex>
 
namespace mtcore::thread::impl {
  extern std::mutex stackTraceMux;
}
 
#define MTCORE_THREAD_IMPL_NAME1(X, Y, S, N, SEP) X##SEP##Y##SEP##S##SEP##N
#define MTCORE_THREAD_IMPL_NAME(X, Y, S, N)       MTCORE_THREAD_IMPL_NAME1(X, Y, S, N, _)
#define MTCORE_THREAD_SHORT_NAME(X, Y)            MTCORE_THREAD_IMPL_NAME1(X, Y, S, N, _)
 
 
#ifndef MTCORE_NO_STACKTRACE
// we redefine these to be more thread friendly, otherwise our stack traces get interleaved and it's a mess to untangle
// them
#ifdef mt_print_cur_stacktrace
#undef mt_print_cur_stacktrace
#endif
 
#ifdef mt_print_stacktrace
#undef mt_print_stacktrace
#endif
 
#define mt_print_cur_stacktrace(...)                                                                                   \
  {                                                                                                                    \
    auto MTCORE_THREAD_SHORT_NAME(stack_lock, __LINE__) = std::unique_lock{mtcore::thread::impl::stackTraceMux};       \
    (void) fprintf(stderr, __VA_ARGS__);                                                                               \
    (void) fflush(stderr);                                                                                             \
    cpptrace::stacktrace::current(1).print(std::cerr);                                                                 \
  }
 
#define mt_print_stacktrace(TRACE, ...)                                                                                \
  {                                                                                                                    \
    auto MTCORE_THREAD_SHORT_NAME(stack_lock, __LINE__) = std::unique_lock{mtcore::thread::impl::stackTraceMux};       \
    (void) fprintf(stderr, __VA_ARGS__);                                                                               \
    (void) fflush(stderr);                                                                                             \
    (TRACE).print(std::cerr);                                                                                          \
  }
 
#include "mtcore.hpp"
#endif
 
#endif  // MTCORE_THREAD_CORE_HPP