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bind/lib/isc/lib.c

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put msgcat init in lib.c
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/*
Update license headers to not include years in copyright in all applicable files
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* 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.
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*
4401. [misc] Change LICENSE to MPL 2.0.
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* 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
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*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
put msgcat init in lib.c
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*/
1851. [doc] Doxygen comment markup. [RT #11398]
2005-04-27 04:57:32 +00:00
/*! \file */
add RCS id string
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Remove message catalogs
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#include <isc/bind9.h>
put msgcat init in lib.c
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#include <isc/lib.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>
#include <isc/tls.h>
#include <isc/util.h>
#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]
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#include "trampoline_p.h"
put msgcat init in lib.c
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/***
*** Functions
***/
2660. [func] Add a new set of DNS libraries for non-BIND9 applications. See README.libdns. [RT #19369]
2009-09-01 00:22:28 +00:00
void
apply the modified style
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isc_lib_register(void) {
Remove layering from isc_task, isc_app, isc_socket, isc_timer, isc_mem
2018-08-06 13:00:55 +02:00
isc_bind9 = false;
2660. [func] Add a new set of DNS libraries for non-BIND9 applications. See README.libdns. [RT #19369]
2009-09-01 00:22:28 +00:00
}
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_CONSTRUCTOR(101);
void
isc__shutdown(void) ISC_DESTRUCTOR(101);
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();
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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