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Contents of /trunk/js/jsutil.h

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Revision 460 - (show annotations)
Sat Sep 26 23:15:22 2009 UTC (10 years, 1 month ago) by siliconforks
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1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 *
3 * ***** BEGIN LICENSE BLOCK *****
4 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 *
6 * The contents of this file are subject to the Mozilla Public License Version
7 * 1.1 (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
9 * http://www.mozilla.org/MPL/
10 *
11 * Software distributed under the License is distributed on an "AS IS" basis,
12 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 * for the specific language governing rights and limitations under the
14 * License.
15 *
16 * The Original Code is Mozilla Communicator client code, released
17 * March 31, 1998.
18 *
19 * The Initial Developer of the Original Code is
20 * Netscape Communications Corporation.
21 * Portions created by the Initial Developer are Copyright (C) 1998
22 * the Initial Developer. All Rights Reserved.
23 *
24 * Contributor(s):
25 *
26 * Alternatively, the contents of this file may be used under the terms of
27 * either of the GNU General Public License Version 2 or later (the "GPL"),
28 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 * in which case the provisions of the GPL or the LGPL are applicable instead
30 * of those above. If you wish to allow use of your version of this file only
31 * under the terms of either the GPL or the LGPL, and not to allow others to
32 * use your version of this file under the terms of the MPL, indicate your
33 * decision by deleting the provisions above and replace them with the notice
34 * and other provisions required by the GPL or the LGPL. If you do not delete
35 * the provisions above, a recipient may use your version of this file under
36 * the terms of any one of the MPL, the GPL or the LGPL.
37 *
38 * ***** END LICENSE BLOCK ***** */
39
40 /*
41 * PR assertion checker.
42 */
43
44 #ifndef jsutil_h___
45 #define jsutil_h___
46
47 JS_BEGIN_EXTERN_C
48
49 /*
50 * JS_Assert is present even in release builds, for the benefit of applications
51 * that build DEBUG and link against a non-DEBUG SpiderMonkey library.
52 */
53 extern JS_PUBLIC_API(void)
54 JS_Assert(const char *s, const char *file, JSIntn ln);
55
56 #ifdef DEBUG
57
58 #define JS_ASSERT(expr) \
59 ((expr) ? (void)0 : JS_Assert(#expr, __FILE__, __LINE__))
60
61 #define JS_ASSERT_IF(cond, expr) \
62 ((!(cond) || (expr)) ? (void)0 : JS_Assert(#expr, __FILE__, __LINE__))
63
64 #define JS_NOT_REACHED(reason) \
65 JS_Assert(reason, __FILE__, __LINE__)
66
67 #else
68
69 #define JS_ASSERT(expr) ((void) 0)
70 #define JS_ASSERT_IF(cond,expr) ((void) 0)
71 #define JS_NOT_REACHED(reason)
72
73 #endif /* defined(DEBUG) */
74
75 /*
76 * Compile-time assert. "condition" must be a constant expression.
77 * The macro can be used only in places where an "extern" declaration is
78 * allowed.
79 */
80
81 /*
82 * Sun Studio C++ compiler has a bug
83 * "sizeof expression not accepted as size of array parameter"
84 * The bug number is 6688515. It is not public yet.
85 * Turn off this assert for Sun Studio until this bug is fixed.
86 */
87 #ifdef __SUNPRO_CC
88 #define JS_STATIC_ASSERT(condition)
89 #else
90 #define JS_STATIC_ASSERT(condition) \
91 extern void js_static_assert(int arg[(condition) ? 1 : -1])
92 #endif
93
94 #define JS_STATIC_ASSERT_IF(cond, expr) JS_STATIC_ASSERT(!(cond) || (expr))
95
96 /*
97 * Abort the process in a non-graceful manner. This will cause a core file,
98 * call to the debugger or other moral equivalent as well as causing the
99 * entire process to stop.
100 */
101 extern JS_PUBLIC_API(void) JS_Abort(void);
102
103 #if 0
104 # define JS_BASIC_STATS 1
105 # define JS_SCOPE_DEPTH_METER 1
106 #endif
107
108 #if defined DEBUG && !defined JS_BASIC_STATS
109 # define JS_BASIC_STATS 1
110 #endif
111
112 #ifdef JS_BASIC_STATS
113
114 #include <stdio.h>
115
116 typedef struct JSBasicStats {
117 uint32 num;
118 uint32 max;
119 double sum;
120 double sqsum;
121 uint32 logscale; /* logarithmic scale: 0 (linear), 2, 10 */
122 uint32 hist[11];
123 } JSBasicStats;
124
125 #define JS_INIT_STATIC_BASIC_STATS {0,0,0,0,0,{0,0,0,0,0,0,0,0,0,0,0}}
126 #define JS_BASIC_STATS_INIT(bs) memset((bs), 0, sizeof(JSBasicStats))
127
128 #define JS_BASIC_STATS_ACCUM(bs,val) \
129 JS_BasicStatsAccum(bs, val)
130
131 #define JS_MeanAndStdDevBS(bs,sigma) \
132 JS_MeanAndStdDev((bs)->num, (bs)->sum, (bs)->sqsum, sigma)
133
134 extern void
135 JS_BasicStatsAccum(JSBasicStats *bs, uint32 val);
136
137 extern double
138 JS_MeanAndStdDev(uint32 num, double sum, double sqsum, double *sigma);
139
140 extern void
141 JS_DumpBasicStats(JSBasicStats *bs, const char *title, FILE *fp);
142
143 extern void
144 JS_DumpHistogram(JSBasicStats *bs, FILE *fp);
145
146 #else
147
148 #define JS_BASIC_STATS_ACCUM(bs,val) /* nothing */
149
150 #endif /* JS_BASIC_STATS */
151
152
153 #if defined(DEBUG_notme) && defined(XP_UNIX)
154
155 typedef struct JSCallsite JSCallsite;
156
157 struct JSCallsite {
158 uint32 pc;
159 char *name;
160 const char *library;
161 int offset;
162 JSCallsite *parent;
163 JSCallsite *siblings;
164 JSCallsite *kids;
165 void *handy;
166 };
167
168 extern JS_FRIEND_API(JSCallsite *)
169 JS_Backtrace(int skip);
170
171 extern JS_FRIEND_API(void)
172 JS_DumpBacktrace(JSCallsite *trace);
173
174 #endif
175
176 JS_END_EXTERN_C
177
178 #endif /* jsutil_h___ */

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