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c1d7791578
Set/get a single callback function to be invoked at various trace points. Define "before wait" and "after wait" trace points - more trace points can be added later if required. CTDB wants this to log long waits and events. Pair-programmed-with: Amitay Isaacs <amitay@gmail.com> Signed-off-by: Martin Schwenke <martin@meltin.net> Signed-off-by: Stefan Metzmacher <metze@samba.org> (This used to be ctdb commit cb2bbe93628c1ab932c2e1ad6e2ec199a98f74c6)
120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*
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Unix SMB/CIFS implementation.
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Copyright (C) Andrew Tridgell 2005
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Copyright (C) Jelmer Vernooij 2005
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** NOTE! The following LGPL license applies to the tevent
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** library. This does NOT imply that all of Samba is released
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** under the LGPL
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "replace.h"
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#include "tevent.h"
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#include "tevent_internal.h"
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/********************************************************************
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* Debug wrapper functions, modeled (with lot's of code copied as is)
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* after the ev debug wrapper functions
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********************************************************************/
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/*
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this allows the user to choose their own debug function
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*/
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int tevent_set_debug(struct tevent_context *ev,
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void (*debug)(void *context,
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enum tevent_debug_level level,
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const char *fmt,
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va_list ap) PRINTF_ATTRIBUTE(3,0),
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void *context)
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{
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ev->debug_ops.debug = debug;
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ev->debug_ops.context = context;
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return 0;
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}
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/*
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debug function for ev_set_debug_stderr
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*/
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static void tevent_debug_stderr(void *private_data,
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enum tevent_debug_level level,
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const char *fmt,
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va_list ap) PRINTF_ATTRIBUTE(3,0);
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static void tevent_debug_stderr(void *private_data,
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enum tevent_debug_level level,
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const char *fmt, va_list ap)
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{
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if (level <= TEVENT_DEBUG_WARNING) {
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vfprintf(stderr, fmt, ap);
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}
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}
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/*
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convenience function to setup debug messages on stderr
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messages of level TEVENT_DEBUG_WARNING and higher are printed
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*/
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int tevent_set_debug_stderr(struct tevent_context *ev)
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{
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return tevent_set_debug(ev, tevent_debug_stderr, ev);
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}
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/*
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* log a message
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*
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* The default debug action is to ignore debugging messages.
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* This is the most appropriate action for a library.
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* Applications using the library must decide where to
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* redirect debugging messages
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*/
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void tevent_debug(struct tevent_context *ev, enum tevent_debug_level level,
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const char *fmt, ...)
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{
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va_list ap;
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if (!ev) {
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return;
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}
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if (ev->debug_ops.debug == NULL) {
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return;
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}
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va_start(ap, fmt);
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ev->debug_ops.debug(ev->debug_ops.context, level, fmt, ap);
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va_end(ap);
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}
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void tevent_set_trace_callback(struct tevent_context *ev,
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tevent_trace_callback_t cb,
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void *private_data)
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{
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ev->tracing.callback = cb;
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ev->tracing.private_data = private_data;
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}
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void tevent_get_trace_callback(struct tevent_context *ev,
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tevent_trace_callback_t *cb,
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void *private_data)
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{
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*cb = ev->tracing.callback;
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*(void**)private_data = ev->tracing.private_data;
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}
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void tevent_trace_point_callback(struct tevent_context *ev,
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enum tevent_trace_point tp)
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{
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if (ev->tracing.callback != NULL) {
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ev->tracing.callback(tp, ev->tracing.private_data);
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}
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}
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