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[simgrid.git] / src / xbt / xbt_log_layout_simple.c
1 /* $Id$ */
2
3 /* layout_simple - a dumb log layout                                        */
4
5 /* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved.            */
6
7 /* This program is free software; you can redistribute it and/or modify it
8  * under the terms of the license (GNU LGPL) which comes with this package. */
9
10 #include "xbt/sysdep.h"
11 #include "xbt/strbuff.h" /* For dynamic version when the static one fails */
12 #include "xbt/log_private.h"
13 #include "xbt/synchro.h" /* xbt_thread_name */
14
15 #include "gras/virtu.h"
16 #include <stdio.h>
17 #include "portable.h"
18
19 extern const char *xbt_log_priority_names[7];
20
21 static double begin_of_time = -1;
22
23 static void xbt_log_layout_simple_dynamic(xbt_log_layout_t l,
24                                           xbt_log_event_t ev,
25                                           const char*fmt,
26                                           xbt_log_appender_t app) {
27   xbt_strbuff_t buff = xbt_strbuff_new();
28   char loc_buff[256];
29   char *p;
30
31   /* Put every static information in a static buffer, and copy them in the dyn one */
32   p = loc_buff;
33   p += snprintf(p,256-(p-ev->buffer),"[");
34
35   if(strlen(xbt_procname()))
36     p += snprintf(p,256-(p-ev->buffer),"%s:%s:(%d) ",
37                   gras_os_myname(), xbt_procname(),(*xbt_getpid)());
38   p += snprintf(p,256-(p-ev->buffer),"%f] ", gras_os_time()-begin_of_time);
39   if (ev->priority != xbt_log_priority_info)
40     p += snprintf(p,256-(p-ev->buffer), "%s:%d: ", ev->fileName, ev->lineNum);
41   p += snprintf(p,256-(p-ev->buffer), "[%s/%s] ",
42                 ev->cat->name, xbt_log_priority_names[ev->priority] );
43
44   xbt_strbuff_append(buff,loc_buff);
45
46   vasprintf(&p,fmt,ev->ap_copy);
47   xbt_strbuff_append(buff,p);
48   free(p);
49
50   xbt_strbuff_append(buff,"\n");
51
52   app->do_append(app,buff->data);
53   xbt_strbuff_free(buff);
54 }
55
56 /* only used after the format using: we suppose that the buffer is big enough to display our data */
57 #define check_overflow \
58   if (p-ev->buffer > XBT_LOG_BUFF_SIZE) { /* buffer overflow */ \
59   xbt_log_layout_simple_dynamic(l,ev,fmt,app); \
60   return; \
61   }
62
63 static void xbt_log_layout_simple_doit(xbt_log_layout_t l,
64                                        xbt_log_event_t ev,
65                                        const char *fmt,
66                                        xbt_log_appender_t app) {
67   char *p;
68
69   xbt_assert0(ev->priority>=0,
70               "Negative logging priority naturally forbidden");
71   xbt_assert1(ev->priority<sizeof(xbt_log_priority_names),
72               "Priority %d is greater than the biggest allowed value",
73               ev->priority);
74
75   if (begin_of_time<0)
76     begin_of_time=gras_os_time();
77
78   p = ev->buffer;
79   p += snprintf(p,XBT_LOG_BUFF_SIZE-(p-ev->buffer),"[");
80   check_overflow;
81
82   /* Display the proc info if available */
83   if(strlen(xbt_procname())) {
84     p += snprintf(p,XBT_LOG_BUFF_SIZE-(p-ev->buffer),"%s:%s:(%d) ",
85                   gras_os_myname(), xbt_procname(),(*xbt_getpid)());
86     check_overflow;
87   }
88
89   /* Display the date */
90   p += snprintf(p,XBT_LOG_BUFF_SIZE-(p-ev->buffer),"%f] ", gras_os_time()-begin_of_time);
91   check_overflow;
92
93   /* Display file position if not INFO*/
94   if (ev->priority != xbt_log_priority_info)
95     p += snprintf(p,XBT_LOG_BUFF_SIZE-(p-ev->buffer), "%s:%d: ", ev->fileName, ev->lineNum);
96
97   /* Display category name */
98   p += snprintf(p,XBT_LOG_BUFF_SIZE-(p-ev->buffer), "[%s/%s] ",
99                 ev->cat->name, xbt_log_priority_names[ev->priority] );
100
101   /* Display user-provided message */
102   p += vsnprintf(p,XBT_LOG_BUFF_SIZE-(p-ev->buffer), fmt, ev->ap);
103   check_overflow;
104
105   /* End it */
106   p += snprintf(p,XBT_LOG_BUFF_SIZE-(p-ev->buffer), "\n");
107   check_overflow;
108   app->do_append(app,ev->buffer);
109 }
110
111 xbt_log_layout_t xbt_log_layout_simple_new(char *arg) {
112   xbt_log_layout_t res = xbt_new0(s_xbt_log_layout_t,1);
113   res->do_layout = xbt_log_layout_simple_doit;
114   return res;
115 }