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1.1 misho 1:
2: /*
3: * Copyright (c) 2001-2002 Packet Design, LLC.
4: * All rights reserved.
5: *
6: * Subject to the following obligations and disclaimer of warranty,
7: * use and redistribution of this software, in source or object code
8: * forms, with or without modifications are expressly permitted by
9: * Packet Design; provided, however, that:
10: *
11: * (i) Any and all reproductions of the source or object code
12: * must include the copyright notice above and the following
13: * disclaimer of warranties; and
14: * (ii) No rights are granted, in any manner or form, to use
15: * Packet Design trademarks, including the mark "PACKET DESIGN"
16: * on advertising, endorsements, or otherwise except as such
17: * appears in the above copyright notice or in the software.
18: *
19: * THIS SOFTWARE IS BEING PROVIDED BY PACKET DESIGN "AS IS", AND
20: * TO THE MAXIMUM EXTENT PERMITTED BY LAW, PACKET DESIGN MAKES NO
21: * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING
22: * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED
23: * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
24: * OR NON-INFRINGEMENT. PACKET DESIGN DOES NOT WARRANT, GUARANTEE,
25: * OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS
26: * OF THE USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY,
27: * RELIABILITY OR OTHERWISE. IN NO EVENT SHALL PACKET DESIGN BE
28: * LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF ANY USE
29: * OF THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY DIRECT,
30: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL
31: * DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF
32: * USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY THEORY OF
33: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
35: * THE USE OF THIS SOFTWARE, EVEN IF PACKET DESIGN IS ADVISED OF
36: * THE POSSIBILITY OF SUCH DAMAGE.
37: *
38: * Author: Archie Cobbs <archie@freebsd.org>
39: */
40:
41: #ifndef _PDEL_PDEL_DEBUG_H_
42: #define _PDEL_PDEL_DEBUG_H_
43:
44: /*
45: * This flag globally enables/disables debugging.
46: */
47: #define PDEL_DEBUG 0
48:
49: #if PDEL_DEBUG
50: /*
51: * Flags that enable various debugging options.
52: */
53: enum {
54: PDEL_DEBUG_HTTP,
55: PDEL_DEBUG_HTTP_HDRS,
56: PDEL_DEBUG_HTTP_CONNECTION_CACHE,
57: PDEL_DEBUG_HTTP_SERVLET_COOKIEAUTH,
58: PDEL_DEBUG_PEVENT,
59: PDEL_DEBUG_MUTEX,
60: };
61:
62: /*
63: * Runtime variable which controls debugging.
64: */
65: #define PDEL_DEBUG_FLAGS (0 \
66: | (1 << PDEL_DEBUG_HTTP) \
67: | (1 << PDEL_DEBUG_PEVENT) \
68: | (1 << PDEL_DEBUG_MUTEX) \
69: | 0)
70:
71: #endif /* PDEL_DEBUG */
72:
73: /*
74: * Macro to test whether a specific debug flag is enabled.
75: */
76: #if PDEL_DEBUG
77: #define PDEL_DEBUG_ENABLED(f) \
78: ((PDEL_DEBUG_FLAGS & (1 << PDEL_DEBUG_ ## f)) != 0)
79: #else
80: #define PDEL_DEBUG_ENABLED(f) (0)
81: #endif
82:
83: /*
84: * Macro for printing some debugging output.
85: */
86: #if PDEL_DEBUG
87: #define DBG(c, fmt, args...) \
88: do { \
89: char buf[240]; \
90: const char *s; \
91: int r, n; \
92: \
93: if (PDEL_DEBUG_ENABLED(c)) { \
94: snprintf(buf, sizeof(buf), \
95: "%p[%s]: " fmt "\n", pthread_self(), \
96: __FUNCTION__ , ## args); \
97: for (r = strlen(buf), s = buf; \
98: r > 0; r -= n, s += n) { \
99: if ((n = write(1, s, r)) == -1) \
100: break; \
101: } \
102: } \
103: } while (0)
104: #else
105: #define DBG(c, fmt, args...) do { } while (0)
106: #endif /* !PDEL_DEBUG */
107:
108: /*
109: * Mutex macros with additional debugging.
110: */
111: #if PDEL_DEBUG
112:
113: #define MUTEX_LOCK(m, c) \
114: do { \
115: int _r; \
116: \
117: DBG(MUTEX, "locking %s", #m); \
118: _r = pthread_mutex_lock(m); \
119: assert(_r == 0); \
120: (c)++; \
121: DBG(MUTEX, "%s locked -> %d", #m, (c)); \
122: } while (0)
123:
124: #define MUTEX_UNLOCK(m, c) \
125: do { \
126: int _r; \
127: \
128: (c)--; \
129: DBG(MUTEX, "unlocking %s -> %d", #m, (c)); \
130: _r = pthread_mutex_unlock(m); \
131: assert(_r == 0); \
132: DBG(MUTEX, "%s unlocked", #m); \
133: } while (0)
134:
135: #define MUTEX_TRYLOCK(m, c) \
136: do { \
137: int _r; \
138: \
139: DBG(MUTEX, "try locking %s", #m); \
140: _r = pthread_mutex_trylock(m); \
141: if (_r == 0) { \
142: (c)++; \
143: DBG(MUTEX, "%s locked -> %d", #m, (c)); \
144: } else \
145: DBG(MUTEX, "%s lock failed", #m); \
146: errno = _r; \
147: } while (0)
148:
149: #else /* !PDEL_DEBUG */
150:
151: #define MUTEX_LOCK(m, c) (void)pthread_mutex_lock(m)
152: #define MUTEX_UNLOCK(m, c) (void)pthread_mutex_unlock(m)
153: #define MUTEX_TRYLOCK(m, c) (errno = pthread_mutex_trylock(m))
154:
155: #endif /* !PDEL_DEBUG */
156:
157: #endif /* _PDEL_PDEL_DEBUG_H_ */