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Side by Side Diff: src/checks.h

Issue 21173004: Version 3.20.11.1 (Closed) Base URL: https://v8.googlecode.com/svn/trunk
Patch Set: Created 7 years, 4 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 27
28 #ifndef V8_CHECKS_H_ 28 #ifndef V8_CHECKS_H_
29 #define V8_CHECKS_H_ 29 #define V8_CHECKS_H_
30 30
31 #include <string.h> 31 #include <string.h>
32 32
33 #include "globals.h"
34
35 #include "../include/v8stdint.h" 33 #include "../include/v8stdint.h"
36 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...); 34 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...);
37 35
38 // The FATAL, UNREACHABLE and UNIMPLEMENTED macros are useful during 36 // The FATAL, UNREACHABLE and UNIMPLEMENTED macros are useful during
39 // development, but they should not be relied on in the final product. 37 // development, but they should not be relied on in the final product.
40 #ifdef DEBUG 38 #ifdef DEBUG
41 #define FATAL(msg) \ 39 #define FATAL(msg) \
42 V8_Fatal(__FILE__, __LINE__, "%s", (msg)) 40 V8_Fatal(__FILE__, __LINE__, "%s", (msg))
43 #define UNIMPLEMENTED() \ 41 #define UNIMPLEMENTED() \
44 V8_Fatal(__FILE__, __LINE__, "unimplemented code") 42 V8_Fatal(__FILE__, __LINE__, "unimplemented code")
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227 225
228 226
229 #define CHECK_GT(a, b) CHECK((a) > (b)) 227 #define CHECK_GT(a, b) CHECK((a) > (b))
230 #define CHECK_GE(a, b) CHECK((a) >= (b)) 228 #define CHECK_GE(a, b) CHECK((a) >= (b))
231 #define CHECK_LT(a, b) CHECK((a) < (b)) 229 #define CHECK_LT(a, b) CHECK((a) < (b))
232 #define CHECK_LE(a, b) CHECK((a) <= (b)) 230 #define CHECK_LE(a, b) CHECK((a) <= (b))
233 231
234 232
235 // Use C++11 static_assert if possible, which gives error 233 // Use C++11 static_assert if possible, which gives error
236 // messages that are easier to understand on first sight. 234 // messages that are easier to understand on first sight.
237 #if V8_CXX_STATIC_ASSERT 235 #if __cplusplus >= 201103L
238 #define STATIC_CHECK(test) static_assert(test, #test) 236 #define STATIC_CHECK(test) static_assert(test, #test)
239 #else 237 #else
240 // This is inspired by the static assertion facility in boost. This 238 // This is inspired by the static assertion facility in boost. This
241 // is pretty magical. If it causes you trouble on a platform you may 239 // is pretty magical. If it causes you trouble on a platform you may
242 // find a fix in the boost code. 240 // find a fix in the boost code.
243 template <bool> class StaticAssertion; 241 template <bool> class StaticAssertion;
244 template <> class StaticAssertion<true> { }; 242 template <> class StaticAssertion<true> { };
245 // This macro joins two tokens. If one of the tokens is a macro the 243 // This macro joins two tokens. If one of the tokens is a macro the
246 // helper call causes it to be resolved before joining. 244 // helper call causes it to be resolved before joining.
247 #define SEMI_STATIC_JOIN(a, b) SEMI_STATIC_JOIN_HELPER(a, b) 245 #define SEMI_STATIC_JOIN(a, b) SEMI_STATIC_JOIN_HELPER(a, b)
248 #define SEMI_STATIC_JOIN_HELPER(a, b) a##b 246 #define SEMI_STATIC_JOIN_HELPER(a, b) a##b
249 // Causes an error during compilation of the condition is not 247 // Causes an error during compilation of the condition is not
250 // statically known to be true. It is formulated as a typedef so that 248 // statically known to be true. It is formulated as a typedef so that
251 // it can be used wherever a typedef can be used. Beware that this 249 // it can be used wherever a typedef can be used. Beware that this
252 // actually causes each use to introduce a new defined type with a 250 // actually causes each use to introduce a new defined type with a
253 // name depending on the source line. 251 // name depending on the source line.
254 template <int> class StaticAssertionHelper { }; 252 template <int> class StaticAssertionHelper { };
255 #define STATIC_CHECK(test) \ 253 #define STATIC_CHECK(test) \
256 typedef \ 254 typedef \
257 StaticAssertionHelper<sizeof(StaticAssertion<static_cast<bool>((test))>)> \ 255 StaticAssertionHelper<sizeof(StaticAssertion<static_cast<bool>((test))>)> \
258 SEMI_STATIC_JOIN(__StaticAssertTypedef__, __LINE__) 256 SEMI_STATIC_JOIN(__StaticAssertTypedef__, __LINE__)
259 #endif // V8_CXX_STATIC_ASSERT 257 #endif
260 258
261 259
262 extern bool FLAG_enable_slow_asserts; 260 extern bool FLAG_enable_slow_asserts;
263 261
264 262
265 // The ASSERT macro is equivalent to CHECK except that it only 263 // The ASSERT macro is equivalent to CHECK except that it only
266 // generates code in debug builds. 264 // generates code in debug builds.
267 #ifdef DEBUG 265 #ifdef DEBUG
268 #define ASSERT_RESULT(expr) CHECK(expr) 266 #define ASSERT_RESULT(expr) CHECK(expr)
269 #define ASSERT(condition) CHECK(condition) 267 #define ASSERT(condition) CHECK(condition)
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294 292
295 // "Extra checks" are lightweight checks that are enabled in some release 293 // "Extra checks" are lightweight checks that are enabled in some release
296 // builds. 294 // builds.
297 #ifdef ENABLE_EXTRA_CHECKS 295 #ifdef ENABLE_EXTRA_CHECKS
298 #define EXTRA_CHECK(condition) CHECK(condition) 296 #define EXTRA_CHECK(condition) CHECK(condition)
299 #else 297 #else
300 #define EXTRA_CHECK(condition) ((void) 0) 298 #define EXTRA_CHECK(condition) ((void) 0)
301 #endif 299 #endif
302 300
303 #endif // V8_CHECKS_H_ 301 #endif // V8_CHECKS_H_
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