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bind/lib/isc/lib.c

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put msgcat init in lib.c
1999-06-23 22:28:27 +00:00
/*
Update license headers to not include years in copyright in all applicable files
2018-02-23 09:53:12 +01:00
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
Trailing whitespace trimmed. Perhaps running "perl util/spacewhack.pl in your own CVS tree will help minimize CVS conflicts. Maybe not. Blame Graff for getting me to trim all trailing whitespace.
2000-08-01 01:33:37 +00:00
*
4401. [misc] Change LICENSE to MPL 2.0.
2016-06-27 14:56:38 +10:00
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
update all copyright headers to eliminate the typo
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
Update license headers to not include years in copyright in all applicable files
2018-02-23 09:53:12 +01:00
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
put msgcat init in lib.c
1999-06-23 22:28:27 +00:00
*/
1851. [doc] Doxygen comment markup. [RT #11398]
2005-04-27 04:57:32 +00:00
/*! \file */
add RCS id string
2000-06-22 22:00:42 +00:00
Remove message catalogs
2018-11-23 21:35:01 +01:00
#include <isc/bind9.h>
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
#include <isc/mem.h>
Cache the isc_os_ncpu() result It was discovered that on some platforms (f.e. Alpine Linux with MUSL) the result of isc_os_ncpus() call differ when called before and after we drop privileges. This commit changes the isc_os_ncpus() call to cache the result from the first call and thus always return the same value during the runtime of the named. The first call to isc_os_ncpus() is made as soon as possible on the library initalization.
2021-07-12 14:21:21 +02:00
#include <isc/os.h>
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
#include <isc/tls.h>
#include <isc/util.h>
Do not require config.h to use isc/util.h util.h requires ISC_CONSTRUCTOR definition, which depends on config.h inclusion. It does not include it from isc/util.h (or any other header). Using isc/util.h fails hard when isc/util.h is used without including bind's config.h. Move the check to c file, where ISC_CONSTRUCTOR is used. Ensure config.h is included there.
2021-03-26 11:01:59 +01:00
#include "config.h"
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
#include "mem_p.h"
#include "tls_p.h"
Add isc_trampoline API to have simple accounting around threads The current isc_hp API uses internal tid_v variable that gets incremented for each new thread using hazard pointers. This tid_v variable is then used as a index to global shared table with hazard pointers state. Since the tid_v is only incremented and never decremented the table could overflow very quickly if we create set of threads for short period of time, they finish the work and cease to exist. Then we create identical set of threads and so on and so on. This is not a problem for a normal `named` operation as the set of threads is stable, but the problematic place are the unit tests where we test network manager or other APIs (task, timer) that create threads. This commits adds a thin wrapper around any function called from isc_thread_create() that adds unique-but-reusable small digit thread id that can be used as index to f.e. hazard pointer tables. The trampoline wrapper ensures that the thread ids will be reused, so the highest thread_id number doesn't grow indefinitely when threads are created and destroyed and then created again. This fixes the hazard pointer table overflow on machines with many cores. [GL #2396]
2021-02-16 15:57:39 +01:00
#include "trampoline_p.h"
put msgcat init in lib.c
1999-06-23 22:28:27 +00:00
Do not require config.h to use isc/util.h util.h requires ISC_CONSTRUCTOR definition, which depends on config.h inclusion. It does not include it from isc/util.h (or any other header). Using isc/util.h fails hard when isc/util.h is used without including bind's config.h. Move the check to c file, where ISC_CONSTRUCTOR is used. Ensure config.h is included there.
2021-03-26 11:01:59 +01:00
#ifndef ISC_CONSTRUCTOR
#error Either __attribute__((constructor|destructor))__ or DllMain support needed to compile BIND 9.
#endif
put msgcat init in lib.c
1999-06-23 22:28:27 +00:00
/***
*** Functions
***/
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
void
Remove priority from attribute constructor/destructor On some platforms, the __attribute__ constructor and destructor won't take priorities and the compilation failed. On such platform would be macOS. For this reason, the constructor/destructor in the libisc was reworked to not use priorities, but have a single constructor and destructor that calls the appropriate routines in correct order. This commit removes the extra priority because it's now not needed and it also breaks a compilation on macOS with GCC 10.
2021-05-19 16:38:33 +10:00
isc__initialize(void) ISC_CONSTRUCTOR;
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
void
Remove priority from attribute constructor/destructor On some platforms, the __attribute__ constructor and destructor won't take priorities and the compilation failed. On such platform would be macOS. For this reason, the constructor/destructor in the libisc was reworked to not use priorities, but have a single constructor and destructor that calls the appropriate routines in correct order. This commit removes the extra priority because it's now not needed and it also breaks a compilation on macOS with GCC 10.
2021-05-19 16:38:33 +10:00
isc__shutdown(void) ISC_DESTRUCTOR;
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
void
isc__initialize(void) {
isc__mem_initialize();
isc__tls_initialize();
Add isc_trampoline API to have simple accounting around threads The current isc_hp API uses internal tid_v variable that gets incremented for each new thread using hazard pointers. This tid_v variable is then used as a index to global shared table with hazard pointers state. Since the tid_v is only incremented and never decremented the table could overflow very quickly if we create set of threads for short period of time, they finish the work and cease to exist. Then we create identical set of threads and so on and so on. This is not a problem for a normal `named` operation as the set of threads is stable, but the problematic place are the unit tests where we test network manager or other APIs (task, timer) that create threads. This commits adds a thin wrapper around any function called from isc_thread_create() that adds unique-but-reusable small digit thread id that can be used as index to f.e. hazard pointer tables. The trampoline wrapper ensures that the thread ids will be reused, so the highest thread_id number doesn't grow indefinitely when threads are created and destroyed and then created again. This fixes the hazard pointer table overflow on machines with many cores. [GL #2396]
2021-02-16 15:57:39 +01:00
isc__trampoline_initialize();
Cache the isc_os_ncpu() result It was discovered that on some platforms (f.e. Alpine Linux with MUSL) the result of isc_os_ncpus() call differ when called before and after we drop privileges. This commit changes the isc_os_ncpus() call to cache the result from the first call and thus always return the same value during the runtime of the named. The first call to isc_os_ncpus() is made as soon as possible on the library initalization.
2021-07-12 14:21:21 +02:00
(void)isc_os_ncpus();
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
}
void
isc__shutdown(void) {
Add isc_trampoline API to have simple accounting around threads The current isc_hp API uses internal tid_v variable that gets incremented for each new thread using hazard pointers. This tid_v variable is then used as a index to global shared table with hazard pointers state. Since the tid_v is only incremented and never decremented the table could overflow very quickly if we create set of threads for short period of time, they finish the work and cease to exist. Then we create identical set of threads and so on and so on. This is not a problem for a normal `named` operation as the set of threads is stable, but the problematic place are the unit tests where we test network manager or other APIs (task, timer) that create threads. This commits adds a thin wrapper around any function called from isc_thread_create() that adds unique-but-reusable small digit thread id that can be used as index to f.e. hazard pointer tables. The trampoline wrapper ensures that the thread ids will be reused, so the highest thread_id number doesn't grow indefinitely when threads are created and destroyed and then created again. This fixes the hazard pointer table overflow on machines with many cores. [GL #2396]
2021-02-16 15:57:39 +01:00
isc__trampoline_shutdown();
Use library constructor/destructor to initialize OpenSSL 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.
2021-02-09 17:44:40 +01:00
isc__tls_shutdown();
isc__mem_shutdown();
}
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