Panic.hpp

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#pragma once
 
#include <cstdio>
#include <cstdlib>
 
namespace corium {
 
using PanicHandlerFn = void (*)(const char* file, int line, const char* message) noexcept;
 
namespace internal {
 
inline PanicHandlerFn& getPanicHandler() noexcept {
    static PanicHandlerFn handler = nullptr;
    return handler;
}
 
inline void panic(const char* file, int line, const char* message) noexcept {
    if (auto fn = getPanicHandler()) {
        fn(file, line, message);
        return;
    }
#if defined(CORIUM_CUSTOM_PANIC)
    CORIUM_CUSTOM_PANIC(file, line, message);
#elif defined(__arm__) || defined(__thumb__)
    __asm volatile("bkpt #0");
    for (;;) {}
#else
    (void)std::fprintf(stderr, "Corium Panic: %s (%s:%d)\n", message, file, line);
    std::abort();
#endif
}
 
} // namespace internal
 
inline void setPanicHandler(PanicHandlerFn fn) noexcept {
    internal::getPanicHandler() = fn;
}
 
} // namespace corium
 
#if defined(CORIUM_ENABLE_ASSERTIONS) || !defined(NDEBUG)
#define CORIUM_ASSERT(cond, msg) \
    do { \
        if (!(cond)) [[unlikely]] { \
            ::corium::internal::panic(__FILE__, __LINE__, msg); \
        } \
    } while (0)
#else
#define CORIUM_ASSERT(cond, msg) do { (void)sizeof(cond); } while (0)
#endif
 
#define CORIUM_PANIC(msg) ::corium::internal::panic(__FILE__, __LINE__, msg)