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00df61d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | //===-- Implementation of atexit ------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/stdlib/atexit.h"
#include "hdr/types/atexithandler_t.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
#include "src/stdlib/exit_handler.h"
namespace LIBC_NAMESPACE_DECL {
constinit ExitCallbackList atexit_callbacks;
Mutex handler_list_mtx(false, false, false, false);
[[gnu::weak]] extern void teardown_main_tls();
extern "C" {
int __cxa_atexit(AtExitCallback *callback, void *payload, void *) {
return add_atexit_unit(atexit_callbacks, {callback, payload});
}
void __cxa_finalize(void *dso) {
if (!dso) {
call_exit_callbacks(atexit_callbacks);
if (teardown_main_tls)
teardown_main_tls();
}
}
} // extern "C"
LLVM_LIBC_FUNCTION(int, atexit, (__atexithandler_t callback)) {
return add_atexit_unit(
atexit_callbacks,
{&stdc_at_exit_func, reinterpret_cast<void *>(callback)});
}
} // namespace LIBC_NAMESPACE_DECL
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