Jack2  1.9.12
JackError.cpp
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 
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 
36 SERVER_EXPORT int set_threaded_log_function()
37 {
38  return change_thread_log_function(JackMessageBufferAdd);
39 }
40 
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 
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 overriden 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 
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 
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 
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 
118 SERVER_EXPORT void default_jack_error_callback(const char *desc)
119 {
120  fprintf(stderr, "%s\n", desc);
121  fflush(stderr);
122 }
123 
124 SERVER_EXPORT void default_jack_info_callback(const char *desc)
125 {
126  fprintf(stdout, "%s\n", desc);
127  fflush(stdout);
128 }
129 
130 SERVER_EXPORT void silent_jack_error_callback(const char *desc)
131 {}
132 
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;
SERVER_EXPORT void(* jack_info_callback)(const char *desc)
Definition: JackError.cpp:137
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
SERVER_EXPORT void jack_info(const char *fmt,...)
Definition: JackError.cpp:100
SERVER_EXPORT void(* jack_error_callback)(const char *desc)
Definition: JackError.cpp:136
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:108