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bind9/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]
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/*! \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.
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#include <isc/mem.h>
#include <isc/util.h>
Merge branch 'bind-dyndb-ldap-v9.16.13' into 'main' Do not require config.h to use isc/util.h See merge request isc-projects/bind9!4840 (cherry picked from commit 19b69e9a3bdfea7d5128f1e37b27902268cf65b6) 81eb3396 Do not require config.h to use isc/util.h
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#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.
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#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] (cherry picked from commit cbbecfcc822d7607adfcfcdaa35ccad05fa972c6)
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#include "trampoline_p.h"
put msgcat init in lib.c
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Merge branch 'bind-dyndb-ldap-v9.16.13' into 'main' Do not require config.h to use isc/util.h See merge request isc-projects/bind9!4840 (cherry picked from commit 19b69e9a3bdfea7d5128f1e37b27902268cf65b6) 81eb3396 Do not require config.h to use isc/util.h
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#ifndef ISC_CONSTRUCTOR
#error Either __attribute__((constructor|destructor))__ or DllMain support needed to compile BIND 9.
#endif
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]
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void
Merge branch 'each-style-tweak' into 'master' adjust clang-format options to get closer to ISC style See merge request isc-projects/bind9!3061 (cherry picked from commit d3b49b6675a2fdb07e98639abc6a889365bc7ccb) 0255a974 revise .clang-format and add a C formatting script in util e851ed0b 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
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isc_bind9 = false;
2660. [func] Add a new set of DNS libraries for non-BIND9 applications. See README.libdns. [RT #19369]
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}
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.
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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. (cherry picked from commit d68b009cfec31ddef2bb4f4909f86746cbce42e3)
2021-05-19 02:38:33 -04:00
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 11:44:40 -05:00
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. (cherry picked from commit d68b009cfec31ddef2bb4f4909f86746cbce42e3)
2021-05-19 02:38:33 -04:00
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 11:44:40 -05:00
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] (cherry picked from commit cbbecfcc822d7607adfcfcdaa35ccad05fa972c6)
2021-02-16 09:57:39 -05:00
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.
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}
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] (cherry picked from commit cbbecfcc822d7607adfcfcdaa35ccad05fa972c6)
2021-02-16 09:57:39 -05:00
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 11:44:40 -05:00
isc__tls_shutdown();
isc__mem_shutdown();
}
Make linker include library ctor/dtor in statically linked libisc Under normal situation, the linker throws out all symbols from compilation unit when no symbols are used in the final binary, which is the case for lib/isc/lib.c. This commit adds empty function to lib.c that's being called from different CU (mem.c in this case) and that makes the linker to include all the symbols including the normally unreferenced isc__initialize() and isc__shutdown() in the final binary.
2021-02-26 15:09:48 -05:00
/*
* This is a workaround for situation when libisc is statically linked. Under
* normal situation, the linker throws out all symbols from compilation unit
* when no symbols are used in the final binary. This empty function must be
* called at least once from different compilation unit (mem.c in this case).
*/
void
isc_enable_constructors() {
/* do nothing */
}
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