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reorganize primitives for process initialization; use special data segment on Windows for thread termination by default on Windows now (issue #869)

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Daan 2024-10-21 22:56:59 -07:00
parent 34e66778ec
commit aa881733d7
4 changed files with 209 additions and 151 deletions
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44
src/prim/prim.c
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@ -25,3 +25,47 @@ terms of the MIT license. A copy of the license can be found in the file
#include "unix/prim.c" // mmap() (Linux, macOSX, BSD, Illumnos, Haiku, DragonFly, etc.)
#endif
// Generic process initialization
#ifndef MI_PRIM_HAS_PROCESS_ATTACH
#if defined(__GNUC__) || defined(__clang__)
// GCC,Clang: use the constructor attribute
#if defined(__clang__)
#define mi_attr_constructor __attribute__((constructor(101)))
#define mi_attr_destructor __attribute__((destructor(101)))
#else
#define mi_attr_constructor __attribute__((constructor))
#define mi_attr_destructor __attribute__((destructor))
#endif
static void mi_attr_constructor mi_process_attach(void) {
_mi_process_load();
}
static void mi_attr_destructor mi_process_detach(void) {
_mi_process_done();
}
#elif defined(__cplusplus)
// C++: use static initialization to detect process start
static bool mi_process_attach(void) {
_mi_process_load();
atexit(&_mi_process_done);
return (_mi_heap_main.thread_id != 0);
}
static bool mi_initialized = mi_process_attach();
#else
#pragma message("define a way to call _mi_process_load/done on your platform")
#endif
#endif
// Generic allocator init/done callback
#ifndef MI_PRIM_HAS_ALLOCATOR_INIT
bool _mi_is_redirected(void) {
return false;
}
bool _mi_allocator_init(const char** message) {
if (message != NULL) *message = NULL;
return true;
}
void _mi_allocator_done(void) {
// nothing to do
}
#endif