1 /*
2 Copyright (C) 2001 Paul Davis
3 Copyright (C) 2004-2008 Grame
4 Copyright (C) 2008 Nedko Arnaudov
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19
20 */
21
22 #include <stdarg.h>
23 #include <stdio.h>
24 #include "JackError.h"
25 #include "JackGlobals.h"
26 #include "JackMessageBuffer.h"
27
28 using namespace Jack;
29
change_thread_log_function(jack_log_function_t log_function)30 static bool change_thread_log_function(jack_log_function_t log_function)
31 {
32 return (jack_tls_get(JackGlobals::fKeyLogFunction) == NULL
33 && jack_tls_set(JackGlobals::fKeyLogFunction, (void*)log_function));
34 }
35
set_threaded_log_function()36 SERVER_EXPORT int set_threaded_log_function()
37 {
38 return change_thread_log_function(JackMessageBufferAdd);
39 }
40
jack_log_function(int level,const char * message)41 void jack_log_function(int level, const char *message)
42 {
43 void (* log_callback)(const char *);
44
45 switch (level)
46 {
47 case LOG_LEVEL_INFO:
48 log_callback = jack_info_callback;
49 break;
50 case LOG_LEVEL_ERROR:
51 log_callback = jack_error_callback;
52 break;
53 default:
54 return;
55 }
56
57 log_callback(message);
58 }
59
jack_format_and_log(int level,const char * prefix,const char * fmt,va_list ap)60 static void jack_format_and_log(int level, const char *prefix, const char *fmt, va_list ap)
61 {
62 char buffer[256];
63 size_t len;
64 jack_log_function_t log_function;
65
66 if (prefix != NULL) {
67 len = strlen(prefix);
68 assert(len < 256);
69 memcpy(buffer, prefix, len);
70 } else {
71 len = 0;
72 }
73
74 vsnprintf(buffer + len, sizeof(buffer) - len, fmt, ap);
75
76 log_function = (jack_log_function_t)jack_tls_get(JackGlobals::fKeyLogFunction);
77
78 /* if log function is not overridden for thread, use default one */
79 if (log_function == NULL)
80 {
81 log_function = jack_log_function;
82 //log_function(LOG_LEVEL_INFO, "------ Using default log function");
83 }
84 else
85 {
86 //log_function(LOG_LEVEL_INFO, "++++++ Using thread-specific log function");
87 }
88
89 log_function(level, buffer);
90 }
91
jack_error(const char * fmt,...)92 SERVER_EXPORT void jack_error(const char *fmt, ...)
93 {
94 va_list ap;
95 va_start(ap, fmt);
96 jack_format_and_log(LOG_LEVEL_ERROR, NULL, fmt, ap);
97 va_end(ap);
98 }
99
jack_info(const char * fmt,...)100 SERVER_EXPORT void jack_info(const char *fmt, ...)
101 {
102 va_list ap;
103 va_start(ap, fmt);
104 jack_format_and_log(LOG_LEVEL_INFO, NULL, fmt, ap);
105 va_end(ap);
106 }
107
jack_log(const char * fmt,...)108 SERVER_EXPORT void jack_log(const char *fmt,...)
109 {
110 if (JackGlobals::fVerbose) {
111 va_list ap;
112 va_start(ap, fmt);
113 jack_format_and_log(LOG_LEVEL_INFO, "Jack: ", fmt, ap);
114 va_end(ap);
115 }
116 }
117
default_jack_error_callback(const char * desc)118 SERVER_EXPORT void default_jack_error_callback(const char *desc)
119 {
120 fprintf(stderr, "%s\n", desc);
121 fflush(stderr);
122 }
123
default_jack_info_callback(const char * desc)124 SERVER_EXPORT void default_jack_info_callback(const char *desc)
125 {
126 fprintf(stdout, "%s\n", desc);
127 fflush(stdout);
128 }
129
silent_jack_error_callback(const char * desc)130 SERVER_EXPORT void silent_jack_error_callback(const char *desc)
131 {}
132
silent_jack_info_callback(const char * desc)133 SERVER_EXPORT void silent_jack_info_callback(const char *desc)
134 {}
135
136 SERVER_EXPORT void (*jack_error_callback)(const char *desc) = &default_jack_error_callback;
137 SERVER_EXPORT void (*jack_info_callback)(const char *desc) = &default_jack_info_callback;
138