1 /* 2 * Copyright © 2020 Endless Mobile, Inc. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 16 * 17 * Author: Philip Withnall <withnall@endlessm.com> 18 */ 19 20 #pragma once 21 22 #ifdef HAVE_SYSPROF 23 #include <sysprof-capture.h> 24 #endif 25 26 #include "glib.h" 27 28 G_BEGIN_DECLS 29 30 /* 31 * G_TRACE_CURRENT_TIME: 32 * 33 * Get the current time, in nanoseconds since the tracing epoch. This (and only 34 * this) is suitable for passing to tracing functions like g_trace_mark(). It is 35 * not suitable for other timekeeping. 36 * 37 * The tracing epoch is implementation defined, but is guaranteed to be 38 * unchanged within the lifetime of each thread. It is not comparable across 39 * threads or process instances. 40 * 41 * If tracing support is disabled, this evaluates to `0`. 42 * 43 * Since: 2.66 44 */ 45 #ifdef HAVE_SYSPROF 46 #define G_TRACE_CURRENT_TIME SYSPROF_CAPTURE_CURRENT_TIME 47 #else 48 #define G_TRACE_CURRENT_TIME 0 49 #endif 50 51 void (g_trace_mark) (gint64 begin_time_nsec, 52 gint64 duration_nsec, 53 const gchar *group, 54 const gchar *name, 55 const gchar *message_format, 56 ...) G_GNUC_PRINTF (5, 6); 57 58 #ifndef HAVE_SYSPROF 59 /* Optimise the whole call out */ 60 #if defined(G_HAVE_ISO_VARARGS) 61 #define g_trace_mark(b, d, g, n, m, ...) 62 #elif defined(G_HAVE_GNUC_VARARGS) 63 #define g_trace_mark(b, d, g, n, m...) 64 #else 65 /* no varargs macro support; the call will have to be optimised out by the compiler */ 66 #endif 67 #endif 68 69 guint (g_trace_define_int64_counter) (const char *group, 70 const char *name, 71 const char *description); 72 void (g_trace_set_int64_counter) (guint id, 73 gint64 value); 74 75 #ifndef HAVE_SYSPROF 76 #define g_trace_define_int64_counter(g, n, d) ((guint) -1) 77 #define g_trace_set_int64_counter(i,v) 78 #endif 79 80 G_END_DECLS 81