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Use library constructor/destructor to initialize OpenSSL

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Instead of calling isc_tls_initialize()/isc_tls_destroy() explicitly use
gcc/clang attributes on POSIX and DLLMain on Windows to initialize and
shutdown OpenSSL library.

This resolves the issue when isc_nm_create() / isc_nm_destroy() was
called multiple times and it would call OpenSSL library destructors from
isc_nm_destroy().

At the same time, since we now have introduced the ctor/dtor for libisc,
this commit moves the isc_mem API initialization (the list of the
contexts) and changes the isc_mem_checkdestroyed() to schedule the
checking of memory context on library unload instead of executing the
code immediately.
This commit is contained in:
Ondřej Surý
2021-02-09 17:44:40 +01:00
parent 4bde4f050b
commit 494d0da522
15 changed files with 165 additions and 87 deletions
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23
lib/isc/lib.c
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@@ -13,6 +13,12 @@
#include <isc/bind9.h>
#include <isc/lib.h>
#include <isc/mem.h>
#include <isc/tls.h>
#include <isc/util.h>
#include "mem_p.h"
#include "tls_p.h"
/***
*** Functions
@@ -22,3 +28,20 @@ void
isc_lib_register(void) {
isc_bind9 = false;
}
void
isc__initialize(void) ISC_CONSTRUCTOR(101);
void
isc__shutdown(void) ISC_DESTRUCTOR(101);
void
isc__initialize(void) {
isc__mem_initialize();
isc__tls_initialize();
}
void
isc__shutdown(void) {
isc__tls_shutdown();
isc__mem_shutdown();
}