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Prefer MSVC 'data section magic' over C++ static initialization

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This commit is contained in:
Frank Richter 2021-12-28 14:54:15 +01:00
parent 164b3a9667
commit d24262f477
1 changed files with 15 additions and 15 deletions
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30
src/init.c
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@ -557,20 +557,6 @@ static void mi_process_done(void) {
return TRUE;
}
#elif defined(__cplusplus)
// C++: use static initialization to detect process start
static bool _mi_process_init(void) {
mi_process_load();
return (_mi_heap_main.thread_id != 0);
}
static bool mi_initialized = _mi_process_init();
#elif defined(__GNUC__) || defined(__clang__)
// GCC,Clang: use the constructor attribute
static void __attribute__((constructor)) _mi_process_init(void) {
mi_process_load();
}
#elif defined(_MSC_VER)
// MSVC: use data section magic for static libraries
// See <https://www.codeguru.com/cpp/misc/misc/applicationcontrol/article.php/c6945/Running-Code-Before-and-After-Main.htm>
@ -586,9 +572,23 @@ static void mi_process_done(void) {
__pragma(comment(linker, "/include:" "__mi_msvc_initu"))
#endif
#pragma data_seg(".CRT$XIU")
_crt_cb _mi_msvc_initu[] = { &_mi_process_init };
extern "C" _crt_cb _mi_msvc_initu[] = { &_mi_process_init };
#pragma data_seg()
#elif defined(__cplusplus)
// C++: use static initialization to detect process start
static bool _mi_process_init(void) {
mi_process_load();
return (_mi_heap_main.thread_id != 0);
}
static bool mi_initialized = _mi_process_init();
#elif defined(__GNUC__) || defined(__clang__)
// GCC,Clang: use the constructor attribute
static void __attribute__((constructor)) _mi_process_init(void) {
mi_process_load();
}
#else
#pragma message("define a way to call mi_process_load on your platform")
#endif