diff options
Diffstat (limited to 'lib/isc/unix/app.c')
| -rw-r--r-- | lib/isc/unix/app.c | 540 |
1 files changed, 401 insertions, 139 deletions
diff --git a/lib/isc/unix/app.c b/lib/isc/unix/app.c index 660b438678d6..5393be942504 100644 --- a/lib/isc/unix/app.c +++ b/lib/isc/unix/app.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004, 2005, 2007, 2008 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2004, 2005, 2007-2009 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1999-2003 Internet Software Consortium. * * Permission to use, copy, modify, and/or distribute this software for any @@ -15,7 +15,7 @@ * PERFORMANCE OF THIS SOFTWARE. */ -/* $Id: app.c,v 1.60 2008/10/15 03:41:17 marka Exp $ */ +/* $Id: app.c,v 1.64 2009/11/04 05:58:46 marka Exp $ */ /*! \file */ @@ -37,6 +37,7 @@ #include <isc/app.h> #include <isc/boolean.h> #include <isc/condition.h> +#include <isc/mem.h> #include <isc/msgs.h> #include <isc/mutex.h> #include <isc/event.h> @@ -47,31 +48,129 @@ #include <isc/time.h> #include <isc/util.h> +/*% + * For BIND9 internal applications built with threads, we use a single app + * context and let multiple worker, I/O, timer threads do actual jobs. + * For other cases (including BIND9 built without threads) an app context acts + * as an event loop dispatching various events. + */ +#if defined(ISC_PLATFORM_USETHREADS) && defined(BIND9) +#define USE_THREADS_SINGLECTX +#endif + #ifdef ISC_PLATFORM_USETHREADS #include <pthread.h> -#else /* ISC_PLATFORM_USETHREADS */ +#endif + +#ifndef USE_THREADS_SINGLECTX #include "../timer_p.h" #include "../task_p.h" #include "socket_p.h" +#endif /* USE_THREADS_SINGLECTX */ + +#ifdef ISC_PLATFORM_USETHREADS +static pthread_t blockedthread; #endif /* ISC_PLATFORM_USETHREADS */ -static isc_eventlist_t on_run; -static isc_mutex_t lock; -static isc_boolean_t shutdown_requested = ISC_FALSE; -static isc_boolean_t running = ISC_FALSE; -/*! - * We assume that 'want_shutdown' can be read and written atomically. +/*% + * The following can be either static or public, depending on build environment. */ -static volatile isc_boolean_t want_shutdown = ISC_FALSE; + +#ifdef BIND9 +#define ISC_APPFUNC_SCOPE +#else +#define ISC_APPFUNC_SCOPE static +#endif + +ISC_APPFUNC_SCOPE isc_result_t isc__app_start(void); +ISC_APPFUNC_SCOPE isc_result_t isc__app_ctxstart(isc_appctx_t *ctx); +ISC_APPFUNC_SCOPE isc_result_t isc__app_onrun(isc_mem_t *mctx, + isc_task_t *task, + isc_taskaction_t action, + void *arg); +ISC_APPFUNC_SCOPE isc_result_t isc__app_ctxrun(isc_appctx_t *ctx); +ISC_APPFUNC_SCOPE isc_result_t isc__app_run(void); +ISC_APPFUNC_SCOPE isc_result_t isc__app_ctxshutdown(isc_appctx_t *ctx); +ISC_APPFUNC_SCOPE isc_result_t isc__app_shutdown(void); +ISC_APPFUNC_SCOPE isc_result_t isc__app_reload(void); +ISC_APPFUNC_SCOPE isc_result_t isc__app_ctxsuspend(isc_appctx_t *ctx); +ISC_APPFUNC_SCOPE void isc__app_ctxfinish(isc_appctx_t *ctx); +ISC_APPFUNC_SCOPE void isc__app_finish(void); +ISC_APPFUNC_SCOPE void isc__app_block(void); +ISC_APPFUNC_SCOPE void isc__app_unblock(void); +ISC_APPFUNC_SCOPE isc_result_t isc__appctx_create(isc_mem_t *mctx, + isc_appctx_t **ctxp); +ISC_APPFUNC_SCOPE void isc__appctx_destroy(isc_appctx_t **ctxp); +ISC_APPFUNC_SCOPE void isc__appctx_settaskmgr(isc_appctx_t *ctx, + isc_taskmgr_t *taskmgr); +ISC_APPFUNC_SCOPE void isc__appctx_setsocketmgr(isc_appctx_t *ctx, + isc_socketmgr_t *socketmgr); +ISC_APPFUNC_SCOPE void isc__appctx_settimermgr(isc_appctx_t *ctx, + isc_timermgr_t *timermgr); + /* - * We assume that 'want_reload' can be read and written atomically. + * The application context of this module. This implementation actually + * doesn't use it. (This may change in the future). */ -static volatile isc_boolean_t want_reload = ISC_FALSE; +#define APPCTX_MAGIC ISC_MAGIC('A', 'p', 'c', 'x') +#define VALID_APPCTX(c) ISC_MAGIC_VALID(c, APPCTX_MAGIC) + +typedef struct isc__appctx { + isc_appctx_t common; + isc_mem_t *mctx; + isc_mutex_t lock; + isc_eventlist_t on_run; + isc_boolean_t shutdown_requested; + isc_boolean_t running; + + /*! + * We assume that 'want_shutdown' can be read and written atomically. + */ + isc_boolean_t want_shutdown; + /* + * We assume that 'want_reload' can be read and written atomically. + */ + isc_boolean_t want_reload; -static isc_boolean_t blocked = ISC_FALSE; -#ifdef ISC_PLATFORM_USETHREADS -static pthread_t blockedthread; -#endif /* ISC_PLATFORM_USETHREADS */ + isc_boolean_t blocked; + + isc_taskmgr_t *taskmgr; + isc_socketmgr_t *socketmgr; + isc_timermgr_t *timermgr; +} isc__appctx_t; + +static isc__appctx_t isc_g_appctx; + +static struct { + isc_appmethods_t methods; + + /*% + * The following are defined just for avoiding unused static functions. + */ +#ifndef BIND9 + void *run, *shutdown, *start, *onrun, *reload, *finish, + *block, *unblock; +#endif +} appmethods = { + { + isc__appctx_destroy, + isc__app_ctxstart, + isc__app_ctxrun, + isc__app_ctxsuspend, + isc__app_ctxshutdown, + isc__app_ctxfinish, + isc__appctx_settaskmgr, + isc__appctx_setsocketmgr, + isc__appctx_settimermgr + } +#ifndef BIND9 + , + (void *)isc__app_run, (void *)isc__app_shutdown, + (void *)isc__app_start, (void *)isc__app_onrun, (void *)isc__app_reload, + (void *)isc__app_finish, (void *)isc__app_block, + (void *)isc__app_unblock +#endif +}; #ifdef HAVE_LINUXTHREADS /*! @@ -91,13 +190,13 @@ static pthread_t main_thread; static void exit_action(int arg) { UNUSED(arg); - want_shutdown = ISC_TRUE; + isc_g_appctx.want_shutdown = ISC_TRUE; } static void reload_action(int arg) { UNUSED(arg); - want_reload = ISC_TRUE; + isc_g_appctx.want_reload = ISC_TRUE; } #endif @@ -123,12 +222,12 @@ handle_signal(int sig, void (*handler)(int)) { return (ISC_R_SUCCESS); } -isc_result_t -isc_app_start(void) { +ISC_APPFUNC_SCOPE isc_result_t +isc__app_ctxstart(isc_appctx_t *ctx0) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; isc_result_t result; - int presult; - sigset_t sset; - char strbuf[ISC_STRERRORSIZE]; + + REQUIRE(VALID_APPCTX(ctx)); /* * Start an ISC library application. @@ -151,7 +250,35 @@ isc_app_start(void) { main_thread = pthread_self(); #endif - result = isc_mutex_init(&lock); + result = isc_mutex_init(&ctx->lock); + if (result != ISC_R_SUCCESS) + return (result); + + ISC_LIST_INIT(ctx->on_run); + + ctx->shutdown_requested = ISC_FALSE; + ctx->running = ISC_FALSE; + ctx->want_shutdown = ISC_FALSE; + ctx->want_reload = ISC_FALSE; + ctx->blocked = ISC_FALSE; + + return (ISC_R_SUCCESS); +} + +ISC_APPFUNC_SCOPE isc_result_t +isc__app_start(void) { + isc_result_t result; + int presult; + sigset_t sset; + char strbuf[ISC_STRERRORSIZE]; + + isc_g_appctx.common.impmagic = APPCTX_MAGIC; + isc_g_appctx.common.magic = ISCAPI_APPCTX_MAGIC; + isc_g_appctx.common.methods = &appmethods.methods; + isc_g_appctx.mctx = NULL; + /* The remaining members will be initialized in ctxstart() */ + + result = isc__app_ctxstart((isc_appctx_t *)&isc_g_appctx); if (result != ISC_R_SUCCESS) return (result); @@ -253,22 +380,20 @@ isc_app_start(void) { } #endif /* ISC_PLATFORM_USETHREADS */ - ISC_LIST_INIT(on_run); - return (ISC_R_SUCCESS); } -isc_result_t -isc_app_onrun(isc_mem_t *mctx, isc_task_t *task, isc_taskaction_t action, +ISC_APPFUNC_SCOPE isc_result_t +isc__app_onrun(isc_mem_t *mctx, isc_task_t *task, isc_taskaction_t action, void *arg) { isc_event_t *event; isc_task_t *cloned_task = NULL; isc_result_t result; - LOCK(&lock); + LOCK(&isc_g_appctx.lock); - if (running) { + if (isc_g_appctx.running) { result = ISC_R_ALREADYRUNNING; goto unlock; } @@ -285,24 +410,25 @@ isc_app_onrun(isc_mem_t *mctx, isc_task_t *task, isc_taskaction_t action, goto unlock; } - ISC_LIST_APPEND(on_run, event, ev_link); + ISC_LIST_APPEND(isc_g_appctx.on_run, event, ev_link); result = ISC_R_SUCCESS; unlock: - UNLOCK(&lock); + UNLOCK(&isc_g_appctx.lock); return (result); } -#ifndef ISC_PLATFORM_USETHREADS +#ifndef USE_THREADS_SINGLECTX /*! * Event loop for nonthreaded programs. */ static isc_result_t -evloop(void) { +evloop(isc__appctx_t *ctx) { isc_result_t result; - while (!want_shutdown) { + + while (!ctx->want_shutdown) { int n; isc_time_t when, now; struct timeval tv, *tvp; @@ -310,14 +436,27 @@ evloop(void) { isc_boolean_t readytasks; isc_boolean_t call_timer_dispatch = ISC_FALSE; - readytasks = isc__taskmgr_ready(); + /* + * Check the reload (or suspend) case first for exiting the + * loop as fast as possible in case: + * - the direct call to isc__taskmgr_dispatch() in + * isc__app_ctxrun() completes all the tasks so far, + * - there is thus currently no active task, and + * - there is a timer event + */ + if (ctx->want_reload) { + ctx->want_reload = ISC_FALSE; + return (ISC_R_RELOAD); + } + + readytasks = isc__taskmgr_ready(ctx->taskmgr); if (readytasks) { tv.tv_sec = 0; tv.tv_usec = 0; tvp = &tv; call_timer_dispatch = ISC_TRUE; } else { - result = isc__timermgr_nextevent(&when); + result = isc__timermgr_nextevent(ctx->timermgr, &when); if (result != ISC_R_SUCCESS) tvp = NULL; else { @@ -334,7 +473,7 @@ evloop(void) { } swait = NULL; - n = isc__socketmgr_waitevents(tvp, &swait); + n = isc__socketmgr_waitevents(ctx->socketmgr, tvp, &swait); if (n == 0 || call_timer_dispatch) { /* @@ -351,20 +490,17 @@ evloop(void) { * call, since this loop only runs in the non-thread * mode. */ - isc__timermgr_dispatch(); + isc__timermgr_dispatch(ctx->timermgr); } if (n > 0) - (void)isc__socketmgr_dispatch(swait); - (void)isc__taskmgr_dispatch(); - - if (want_reload) { - want_reload = ISC_FALSE; - return (ISC_R_RELOAD); - } + (void)isc__socketmgr_dispatch(ctx->socketmgr, swait); + (void)isc__taskmgr_dispatch(ctx->taskmgr); } return (ISC_R_SUCCESS); } +#endif /* USE_THREADS_SINGLECTX */ +#ifndef ISC_PLATFORM_USETHREADS /* * This is a gross hack to support waiting for condition * variables in nonthreaded programs in a limited way; @@ -400,11 +536,11 @@ isc__nothread_wait_hack(isc_condition_t *cp, isc_mutex_t *mp) { INSIST(*mp == 1); /* Mutex must be locked on entry. */ --*mp; - result = evloop(); + result = evloop(&isc_g_appctx); if (result == ISC_R_RELOAD) - want_reload = ISC_TRUE; + isc_g_appctx.want_reload = ISC_TRUE; if (signalled) { - want_shutdown = ISC_FALSE; + isc_g_appctx.want_shutdown = ISC_FALSE; signalled = ISC_FALSE; } @@ -420,43 +556,46 @@ isc__nothread_signal_hack(isc_condition_t *cp) { INSIST(in_recursive_evloop); - want_shutdown = ISC_TRUE; + isc_g_appctx.want_shutdown = ISC_TRUE; signalled = ISC_TRUE; return (ISC_R_SUCCESS); } #endif /* ISC_PLATFORM_USETHREADS */ -isc_result_t -isc_app_run(void) { +ISC_APPFUNC_SCOPE isc_result_t +isc__app_ctxrun(isc_appctx_t *ctx0) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; int result; isc_event_t *event, *next_event; isc_task_t *task; -#ifdef ISC_PLATFORM_USETHREADS +#ifdef USE_THREADS_SINGLECTX sigset_t sset; char strbuf[ISC_STRERRORSIZE]; #ifdef HAVE_SIGWAIT int sig; #endif -#endif /* ISC_PLATFORM_USETHREADS */ +#endif /* USE_THREADS_SINGLECTX */ + + REQUIRE(VALID_APPCTX(ctx)); #ifdef HAVE_LINUXTHREADS REQUIRE(main_thread == pthread_self()); #endif - LOCK(&lock); + LOCK(&ctx->lock); - if (!running) { - running = ISC_TRUE; + if (!ctx->running) { + ctx->running = ISC_TRUE; /* * Post any on-run events (in FIFO order). */ - for (event = ISC_LIST_HEAD(on_run); + for (event = ISC_LIST_HEAD(ctx->on_run); event != NULL; event = next_event) { next_event = ISC_LIST_NEXT(event, ev_link); - ISC_LIST_UNLINK(on_run, event, ev_link); + ISC_LIST_UNLINK(ctx->on_run, event, ev_link); task = event->ev_sender; event->ev_sender = NULL; isc_task_sendanddetach(&task, &event); @@ -464,7 +603,7 @@ isc_app_run(void) { } - UNLOCK(&lock); + UNLOCK(&ctx->lock); #ifndef HAVE_SIGWAIT /* @@ -473,19 +612,27 @@ isc_app_run(void) { * We do this here to ensure that the signal handler is installed * (i.e. that it wasn't a "one-shot" handler). */ - result = handle_signal(SIGHUP, reload_action); - if (result != ISC_R_SUCCESS) - return (ISC_R_SUCCESS); + if (ctx == &isc_g_appctx) { + result = handle_signal(SIGHUP, reload_action); + if (result != ISC_R_SUCCESS) + return (ISC_R_SUCCESS); + } #endif -#ifdef ISC_PLATFORM_USETHREADS +#ifdef USE_THREADS_SINGLECTX + /* + * When we are using multiple contexts, we don't rely on signals. + */ + if (ctx != &isc_g_appctx) + return (ISC_R_SUCCESS); + /* * There is no danger if isc_app_shutdown() is called before we wait * for signals. Signals are blocked, so any such signal will simply * be made pending and we will get it when we call sigwait(). */ - while (!want_shutdown) { + while (!ctx->want_shutdown) { #ifdef HAVE_SIGWAIT /* * Wait for SIGHUP, SIGINT, or SIGTERM. @@ -503,21 +650,19 @@ isc_app_run(void) { #ifndef HAVE_UNIXWARE_SIGWAIT result = sigwait(&sset, &sig); if (result == 0) { - if (sig == SIGINT || - sig == SIGTERM) - want_shutdown = ISC_TRUE; + if (sig == SIGINT || sig == SIGTERM) + ctx->want_shutdown = ISC_TRUE; else if (sig == SIGHUP) - want_reload = ISC_TRUE; + ctx->want_reload = ISC_TRUE; } #else /* Using UnixWare sigwait semantics. */ sig = sigwait(&sset); if (sig >= 0) { - if (sig == SIGINT || - sig == SIGTERM) - want_shutdown = ISC_TRUE; + if (sig == SIGINT || sig == SIGTERM) + ctx->want_shutdown = ISC_TRUE; else if (sig == SIGHUP) - want_reload = ISC_TRUE; + ctx->want_reload = ISC_TRUE; } #endif /* HAVE_UNIXWARE_SIGWAIT */ @@ -528,131 +673,174 @@ isc_app_run(void) { if (sigemptyset(&sset) != 0) { isc__strerror(errno, strbuf, sizeof(strbuf)); UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_app_run() sigsetops: %s", strbuf); + "isc_app_run() sigsetops: %s", + strbuf); return (ISC_R_UNEXPECTED); } result = sigsuspend(&sset); #endif /* HAVE_SIGWAIT */ - if (want_reload) { - want_reload = ISC_FALSE; + if (ctx->want_reload) { + ctx->want_reload = ISC_FALSE; return (ISC_R_RELOAD); } - if (want_shutdown && blocked) + if (ctx->want_shutdown && ctx->blocked) exit(1); } -#else /* ISC_PLATFORM_USETHREADS */ +#else /* USE_THREADS_SINGLECTX */ - (void)isc__taskmgr_dispatch(); + (void)isc__taskmgr_dispatch(ctx->taskmgr); - result = evloop(); + result = evloop(ctx); if (result != ISC_R_SUCCESS) return (result); -#endif /* ISC_PLATFORM_USETHREADS */ +#endif /* USE_THREADS_SINGLECTX */ return (ISC_R_SUCCESS); } -isc_result_t -isc_app_shutdown(void) { +ISC_APPFUNC_SCOPE isc_result_t +isc__app_run() { + return (isc__app_ctxrun((isc_appctx_t *)&isc_g_appctx)); +} + +ISC_APPFUNC_SCOPE isc_result_t +isc__app_ctxshutdown(isc_appctx_t *ctx0) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; isc_boolean_t want_kill = ISC_TRUE; char strbuf[ISC_STRERRORSIZE]; - LOCK(&lock); + REQUIRE(VALID_APPCTX(ctx)); - REQUIRE(running); + LOCK(&ctx->lock); - if (shutdown_requested) + REQUIRE(ctx->running); + + if (ctx->shutdown_requested) want_kill = ISC_FALSE; else - shutdown_requested = ISC_TRUE; + ctx->shutdown_requested = ISC_TRUE; - UNLOCK(&lock); + UNLOCK(&ctx->lock); if (want_kill) { + if (ctx != &isc_g_appctx) + ctx->want_shutdown = ISC_TRUE; + else { #ifdef HAVE_LINUXTHREADS - int result; - - result = pthread_kill(main_thread, SIGTERM); - if (result != 0) { - isc__strerror(result, strbuf, sizeof(strbuf)); - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_app_shutdown() pthread_kill: %s", - strbuf); - return (ISC_R_UNEXPECTED); - } + int result; + + result = pthread_kill(main_thread, SIGTERM); + if (result != 0) { + isc__strerror(result, strbuf, sizeof(strbuf)); + UNEXPECTED_ERROR(__FILE__, __LINE__, + "isc_app_shutdown() " + "pthread_kill: %s", + strbuf); + return (ISC_R_UNEXPECTED); + } #else - if (kill(getpid(), SIGTERM) < 0) { - isc__strerror(errno, strbuf, sizeof(strbuf)); - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_app_shutdown() kill: %s", strbuf); - return (ISC_R_UNEXPECTED); + if (kill(getpid(), SIGTERM) < 0) { + isc__strerror(errno, strbuf, sizeof(strbuf)); + UNEXPECTED_ERROR(__FILE__, __LINE__, + "isc_app_shutdown() " + "kill: %s", strbuf); + return (ISC_R_UNEXPECTED); + } +#endif /* HAVE_LINUXTHREADS */ } -#endif } return (ISC_R_SUCCESS); } -isc_result_t -isc_app_reload(void) { +ISC_APPFUNC_SCOPE isc_result_t +isc__app_shutdown() { + return (isc__app_ctxshutdown((isc_appctx_t *)&isc_g_appctx)); +} + +ISC_APPFUNC_SCOPE isc_result_t +isc__app_ctxsuspend(isc_appctx_t *ctx0) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; isc_boolean_t want_kill = ISC_TRUE; char strbuf[ISC_STRERRORSIZE]; - LOCK(&lock); + REQUIRE(VALID_APPCTX(ctx)); + + LOCK(&ctx->lock); - REQUIRE(running); + REQUIRE(ctx->running); /* * Don't send the reload signal if we're shutting down. */ - if (shutdown_requested) + if (ctx->shutdown_requested) want_kill = ISC_FALSE; - UNLOCK(&lock); + UNLOCK(&ctx->lock); if (want_kill) { + if (ctx != &isc_g_appctx) + ctx->want_reload = ISC_TRUE; + else { #ifdef HAVE_LINUXTHREADS - int result; - - result = pthread_kill(main_thread, SIGHUP); - if (result != 0) { - isc__strerror(result, strbuf, sizeof(strbuf)); - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_app_reload() pthread_kill: %s", - strbuf); - return (ISC_R_UNEXPECTED); - } + int result; + + result = pthread_kill(main_thread, SIGHUP); + if (result != 0) { + isc__strerror(result, strbuf, sizeof(strbuf)); + UNEXPECTED_ERROR(__FILE__, __LINE__, + "isc_app_reload() " + "pthread_kill: %s", + strbuf); + return (ISC_R_UNEXPECTED); + } #else - if (kill(getpid(), SIGHUP) < 0) { - isc__strerror(errno, strbuf, sizeof(strbuf)); - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_app_reload() kill: %s", strbuf); - return (ISC_R_UNEXPECTED); - } + if (kill(getpid(), SIGHUP) < 0) { + isc__strerror(errno, strbuf, sizeof(strbuf)); + UNEXPECTED_ERROR(__FILE__, __LINE__, + "isc_app_reload() " + "kill: %s", strbuf); + return (ISC_R_UNEXPECTED); + } #endif + } } return (ISC_R_SUCCESS); } -void -isc_app_finish(void) { - DESTROYLOCK(&lock); +ISC_APPFUNC_SCOPE isc_result_t +isc__app_reload(void) { + return (isc__app_ctxsuspend((isc_appctx_t *)&isc_g_appctx)); +} + +ISC_APPFUNC_SCOPE void +isc__app_ctxfinish(isc_appctx_t *ctx0) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; + + REQUIRE(VALID_APPCTX(ctx)); + + DESTROYLOCK(&ctx->lock); +} + +ISC_APPFUNC_SCOPE void +isc__app_finish(void) { + isc__app_ctxfinish((isc_appctx_t *)&isc_g_appctx); } -void -isc_app_block(void) { +ISC_APPFUNC_SCOPE void +isc__app_block(void) { #ifdef ISC_PLATFORM_USETHREADS sigset_t sset; #endif /* ISC_PLATFORM_USETHREADS */ - REQUIRE(running); - REQUIRE(!blocked); + REQUIRE(isc_g_appctx.running); + REQUIRE(!isc_g_appctx.blocked); - blocked = ISC_TRUE; + isc_g_appctx.blocked = ISC_TRUE; #ifdef ISC_PLATFORM_USETHREADS blockedthread = pthread_self(); RUNTIME_CHECK(sigemptyset(&sset) == 0 && @@ -662,16 +850,16 @@ isc_app_block(void) { #endif /* ISC_PLATFORM_USETHREADS */ } -void -isc_app_unblock(void) { +ISC_APPFUNC_SCOPE void +isc__app_unblock(void) { #ifdef ISC_PLATFORM_USETHREADS sigset_t sset; #endif /* ISC_PLATFORM_USETHREADS */ - REQUIRE(running); - REQUIRE(blocked); + REQUIRE(isc_g_appctx.running); + REQUIRE(isc_g_appctx.blocked); - blocked = ISC_FALSE; + isc_g_appctx.blocked = ISC_FALSE; #ifdef ISC_PLATFORM_USETHREADS REQUIRE(blockedthread == pthread_self()); @@ -682,3 +870,77 @@ isc_app_unblock(void) { RUNTIME_CHECK(pthread_sigmask(SIG_BLOCK, &sset, NULL) == 0); #endif /* ISC_PLATFORM_USETHREADS */ } + +ISC_APPFUNC_SCOPE isc_result_t +isc__appctx_create(isc_mem_t *mctx, isc_appctx_t **ctxp) { + isc__appctx_t *ctx; + + REQUIRE(mctx != NULL); + REQUIRE(ctxp != NULL && *ctxp == NULL); + + ctx = isc_mem_get(mctx, sizeof(*ctx)); + if (ctx == NULL) + return (ISC_R_NOMEMORY); + + ctx->common.impmagic = APPCTX_MAGIC; + ctx->common.magic = ISCAPI_APPCTX_MAGIC; + ctx->common.methods = &appmethods.methods; + + ctx->mctx = NULL; + isc_mem_attach(mctx, &ctx->mctx); + + ctx->taskmgr = NULL; + ctx->socketmgr = NULL; + ctx->timermgr = NULL; + + *ctxp = (isc_appctx_t *)ctx; + + return (ISC_R_SUCCESS); +} + +ISC_APPFUNC_SCOPE void +isc__appctx_destroy(isc_appctx_t **ctxp) { + isc__appctx_t *ctx; + + REQUIRE(ctxp != NULL); + ctx = (isc__appctx_t *)*ctxp; + REQUIRE(VALID_APPCTX(ctx)); + + isc_mem_putanddetach(&ctx->mctx, ctx, sizeof(*ctx)); + + *ctxp = NULL; +} + +ISC_APPFUNC_SCOPE void +isc__appctx_settaskmgr(isc_appctx_t *ctx0, isc_taskmgr_t *taskmgr) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; + + REQUIRE(VALID_APPCTX(ctx)); + + ctx->taskmgr = taskmgr; +} + +ISC_APPFUNC_SCOPE void +isc__appctx_setsocketmgr(isc_appctx_t *ctx0, isc_socketmgr_t *socketmgr) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; + + REQUIRE(VALID_APPCTX(ctx)); + + ctx->socketmgr = socketmgr; +} + +ISC_APPFUNC_SCOPE void +isc__appctx_settimermgr(isc_appctx_t *ctx0, isc_timermgr_t *timermgr) { + isc__appctx_t *ctx = (isc__appctx_t *)ctx0; + + REQUIRE(VALID_APPCTX(ctx)); + + ctx->timermgr = timermgr; +} + +#ifdef USE_APPIMPREGISTER +isc_result_t +isc__app_register() { + return (isc_app_register(isc__appctx_create)); +} +#endif |