77fb8ab9f2
I think this is getting close on __dynamic_cast. There's been quite a bit of code rearrangement, renaming, and better commenting. This exercise has exposed and fixed a few more bugs. I've also added several more tests (there's definitely a need for more tests here).
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llvm-svn: 148227
2012-01-16 00:13:46 +00:00
f55694af01
Two bug fixes, several clarifications, and a few comment updates.
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llvm-svn: 148180
2012-01-14 14:15:43 +00:00
fcf732c7a6
A bug fix involving the updating of path_dst_ptr_to_static_ptr. Some minor code rearrangement optimizations (putting most likely 'if' first in an if-else series. And some major optimizations which involve stopping the search prior to an exhaustive walk over the entire tree. Some of these stops are because an ambiguity is detected earlier. And some of the short circuiting is due to the information from the bits __diamond_shaped_mask and __non_diamond_repeat_mask. The stress test checked in last night is now about 28% faster for the B<Width/2, Depth> -O3 case. I'm still playing with some more optimization possibilities but I'm not sure they will play out.
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llvm-svn: 148153
2012-01-13 23:06:03 +00:00
50f7eeec9d
Enclosed is a stress test for dynamic_cast. It stresses both libc++abi, and clang itself. It creates a ridiculously large class hierarchy using variadic templates. You can specify both the width and depth of the class hierarchy. And you can specify whether the cast is to the actual run time type, or to an intermediate layer in the class. About 1/3 of the time I compile this, it crashes the compiler. There seems to be an uninitialized area of memory, and I'm probably blowing past an assumption on class hierarchy size within clang (and understandably so). I can get it work most of the time with a class hierarchy width of 20 and a depth of 7. I'm making timings with both -O3 and -Os, using both cast to root and cast to intermediate, on both libc++abi, and gcc's dynamic_cast. I've put the results in a comment/table at the bottom of the test.
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llvm-svn: 148083
2012-01-13 01:22:31 +00:00
b1ca881191
Oops, forgot to svn add the new test.
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llvm-svn: 148047
2012-01-12 21:08:25 +00:00
b7d59ec6e1
Put debug print statments under a flag so that I can get a first glimpse at performance. So far I haven't noticed any performance difference between this new __dynamic_cast and gcc's implementation. But I've barely started looking. Also adding a couple of tests which come straight out of the standard.
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llvm-svn: 148046
2012-01-12 21:06:12 +00:00
af07bfdb67
Fixed a couple of bugs, updated many comments, and am including a comprehensive test for when there are only 3 types in place. I need to do something similar for 4 and maybe more types, but I'm not sure how comprehensive I can make the test at 4 and above types.
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llvm-svn: 148038
2012-01-12 19:48:14 +00:00
f88480363e
Initial implementaiton of __dynamic_cast. There is still lots of debugging code in here that needs to be stripped out. And many, many unit tests need to be written. And comments and probably code cleanliness needs to be improved. But I *think* the basic algorithm is sound. There also may still be some oportunities for algorithm optimization, I'm not positive.
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llvm-svn: 147981
2012-01-11 23:49:18 +00:00
d9e7393741
This is a transitory commit for __dynamic_cast. It contains debugging statements that are not intended to be in the finished product. However some of the dubbing statements themselves contain important documentation such as how to navigate a __class_type_info hierarchy, documenting object offset and inheritance access. The intention is that this debugging code will migrate into both actual code and comments. And capturing it here so that there is no chance this stuff will be lost.
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llvm-svn: 147898
2012-01-11 00:11:17 +00:00
d88ba82a47
Getting a start on the typeinfo infrastructure.
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llvm-svn: 147776
2012-01-09 17:10:00 +00:00
86b4dfac01
First brush with testing __gxx_personality_v0 reveals there is still a long way to go. But my understanding of what it is supposed to do continues to improve. I am currently contemplating whether I need to implement typeinfo before completing __gxx_personality_v0 in order to get matching catch handlers correct.
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llvm-svn: 147761
2012-01-08 23:50:46 +00:00
7530f19d03
Add a few TODO's and FIXME's. Making notes as I go along, but not slowing down to fix these yet. Just don't want anything to fall through the cracks.
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llvm-svn: 147760
2012-01-08 23:40:41 +00:00
5dc3179e5d
Correct comment regarding members of __cxa_dependent_exception. Actually it is useful to disguise a __cxa_dependent_exception as a __cxa_exception by filling in most (not all) of these members at __cxa_dependent_exception construction time. That way most routines don't have to care which kind of exception they have.
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llvm-svn: 147759
2012-01-08 23:39:14 +00:00
d3dba31762
__gxx_personality_v0 update. This is completely untested code. But my brain is scrambled and I wanted to get it checked in. Code review from anyone who knows anything at all about personality functions would be much appreciated. What is in here is borrowed heavily from llvm/examples/ExceptionDemo/ExceptionDemo.cpp. There are some calls to abort() that should probably be changed to return an error code instead. There may be encodings under readEncodedPointer that need to be implemented. And my handling of type_info is almost a complete guess.
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llvm-svn: 147680
2012-01-06 20:39:47 +00:00
d2bab35080
Improved comment to explain why we can use __cxa_get_globals_fast here
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llvm-svn: 147554
2012-01-04 22:18:10 +00:00
66d9327b80
Just getting started on the personality routine. This is just a skeleton. Still learning how to fill it in...
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llvm-svn: 147547
2012-01-04 20:49:43 +00:00
f368486f4c
Better comment
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llvm-svn: 147532
2012-01-04 14:56:09 +00:00
f83663a9cd
Don't allocate TLS storage when checking to see if an exception has been thrown - really
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llvm-svn: 147497
2012-01-03 23:26:09 +00:00
3e417e7a5c
Don't allocate TLS storage when checking to see if an exception has been thrown
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llvm-svn: 147492
2012-01-03 23:10:20 +00:00
f5bde09cc1
credits adjustment
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llvm-svn: 147148
2011-12-22 16:00:06 +00:00
1de4fc0dfa
Updated __cxa_current_exception_type to call __cxa_get_globals_fast - will not allocate globals
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llvm-svn: 147147
2011-12-22 15:45:05 +00:00
2aa433398a
Updated spec.html regarding __cxa_uncaught_exception.
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llvm-svn: 147110
2011-12-22 00:03:36 +00:00
22f28b2d52
Forgot to increment uncaughtExceptions in __cxa_rethrow_primary_exception
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llvm-svn: 147108
2011-12-21 23:48:05 +00:00
e04f51662c
Added __cxa_increment_exception_refcount, __cxa_decrement_exception_refcount, __cxa_current_primary_exception, __cxa_rethrow_primary_exception
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llvm-svn: 147106
2011-12-21 23:32:11 +00:00
72a05a9198
Add new and delete operators
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llvm-svn: 146989
2011-12-20 20:38:05 +00:00
bf8a39bb94
Fixed several bugs, implemented support for vector types, and cleaned out dead code.
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llvm-svn: 146677
2011-12-15 20:02:15 +00:00
7a084fdd39
Fix size calculation for pointer to member function
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llvm-svn: 146463
2011-12-13 01:23:16 +00:00
58926c9a9b
Made some minor tweaks to __cxa_rethrow
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llvm-svn: 146396
2011-12-12 19:11:42 +00:00
7fcad54836
Added dependent exception support to __cxa_current_exception_type
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llvm-svn: 146381
2011-12-12 18:16:10 +00:00
8de583abf2
Added support for <special-name> ::= TC <first type> <number> _ <second type> # construction vtable for second-in-first, and for <special-name> ::= GR <object name> # reference temporary for object
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llvm-svn: 146274
2011-12-09 20:07:56 +00:00
6ccae15ef0
Modified __cxa_end_catch to handle dependent exceptions.
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llvm-svn: 146172
2011-12-08 19:35:18 +00:00
5ec9183afc
Reviewing cxa_exception.cpp and marking as implemented as I go. Not marking as implemented on arm when I'm not sure about that platform.
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llvm-svn: 146072
2011-12-07 21:16:40 +00:00
b3344a3ac7
Added __cxa_allocate_dependent_exception and __cxa_free_dependent_exception and marked them as done.
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llvm-svn: 146045
2011-12-07 18:30:06 +00:00
dfb34fcb1a
Substituted std::get_terminate() for direct access to the handler function pointer (which is now a static in cxa_handlers.cpp). This has the advantage of going through the atomic API and so is less likely to cause a data race. Ditto for unexpected.
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llvm-svn: 145951
2011-12-06 19:02:03 +00:00
987afbeede
Add/update copyright notices
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llvm-svn: 145949
2011-12-06 18:01:47 +00:00
2642af9e23
terminate, unexpected and new handlers. If terminating while an exception is unwinding, an attempt is made to print out the what() string if the exception is derived from std::exception. __terminate(handler) and __unexpected(handler) helpers are present in anticipation of other parts of libc++abi needing to call these interfaces with custom handlers.
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llvm-svn: 145948
2011-12-06 17:51:25 +00:00
dc82cca6bf
Updated heuristic regulating small string buffer
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llvm-svn: 145543
2011-12-01 00:08:59 +00:00
148b3f64ec
Add alignment requirement to char buffer
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llvm-svn: 145277
2011-11-28 21:03:21 +00:00
9b454bc912
reformatted to match Clang style; thanks to John McCall for the nudge
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llvm-svn: 137623
2011-08-15 18:06:47 +00:00
26a9d23657
demangler: Drop preceeding () from function types, but not from pointers and references to function types
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llvm-svn: 137469
2011-08-12 17:33:10 +00:00
8769449b61
First cut at exception handling; missing dependent exceptions. Next step: tests
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llvm-svn: 137118
2011-08-09 15:09:41 +00:00
49b607a2cd
Silence some -Wall warnings pointed out by Marshall Clow
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llvm-svn: 137047
2011-08-08 15:49:07 +00:00
7c9f1fa9cf
Remove include reference to non-existant file cxa_exception_storage.hpp
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llvm-svn: 137046
2011-08-08 15:12:08 +00:00
2dfc79b19e
make cxxabi.h safe for C code to include
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llvm-svn: 136682
2011-08-02 05:15:26 +00:00
1c839a945b
use LIBCXXABI_NORETURN
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llvm-svn: 136681
2011-08-02 05:01:31 +00:00
12a10bc046
make LIBCXXABI_NORETURN be the right attribute
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llvm-svn: 136680
2011-08-02 05:01:17 +00:00
7cb4926da1
use abort_message() for pthread errors in __cxa_get_globals
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llvm-svn: 136672
2011-08-02 01:34:26 +00:00
18ab5f4164
use abort_message()
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llvm-svn: 136671
2011-08-02 01:19:07 +00:00
49cbb02a6a
move abort_message() to its own file
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llvm-svn: 136670
2011-08-02 01:18:14 +00:00
d5b690d39c
add abort_message() utility function
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llvm-svn: 136669
2011-08-02 01:16:03 +00:00
476e600cd4
Added kledzik to CREDITS.TXT
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llvm-svn: 136667
2011-08-02 01:05:24 +00:00
b226908bea
Updated comments
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llvm-svn: 135909
2011-07-25 15:00:11 +00:00
e41bb4dd69
Added copyright header
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llvm-svn: 135601
2011-07-20 18:41:23 +00:00
c6b4318b9a
Update status: http://libcxxabi.llvm.org/spec.html . Looking good! :-)
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llvm-svn: 135590
2011-07-20 16:32:57 +00:00
e2dcb75b2e
Memory manangement routines for exception objects
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llvm-svn: 135587
2011-07-20 15:04:39 +00:00
1df50ca6a2
Exception handling stuctures, and thread-local variables for exception handling
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llvm-svn: 135586
2011-07-20 14:53:53 +00:00
60fa2d232a
Fixed struct/class mismatch for std::type_info and added NORETURN flags
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llvm-svn: 135584
2011-07-20 14:27:46 +00:00
4af8869934
Update by Marshall Clow
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llvm-svn: 135397
2011-07-18 16:38:32 +00:00
08ad085712
A stawman specification for libc++abi and status page
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llvm-svn: 135181
2011-07-14 20:16:50 +00:00
471e111324
In cxa_demangle.cpp, rewrite __parse_unresolved_name to reflect updated understanding and sync with updated clang mangling. Also fix think-o in __parse_encoding enabling the parsing of trailing .eh and .b.
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llvm-svn: 133632
2011-06-22 19:27:39 +00:00
92091dbe41
Clean up the vector tests
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llvm-svn: 132921
2011-06-13 17:57:10 +00:00
280ddee8bd
Implement vector new and delete functionality
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llvm-svn: 132832
2011-06-10 03:40:19 +00:00
8da97113c2
Added Marshall to CREDITS.TXT as requested
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llvm-svn: 132754
2011-06-08 16:58:01 +00:00
575498b52f
tabs to spaces
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llvm-svn: 132729
2011-06-07 19:56:49 +00:00
69e35a7f55
Add support for the ARM EABI variant of the __cxa_guard methods, controlled by
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the LIBCXXABI_ARMEABI macro.
llvm-svn: 132723
2011-06-07 18:46:10 +00:00
6fde150697
Add more tests for cxa_guard methods. This includes our first two tests using
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actual threads!
There's no build file for libcxxabi, so I'll tell you that I built it with this:
$ g++-4.6 -pthread -std=gnu++0x test_guard.cpp ../src/cxa_guard.o -o test_guard
llvm-svn: 132644
2011-06-04 18:01:24 +00:00
f8da5b22af
Tests for bad_typeid and bad_cast
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llvm-svn: 132545
2011-06-03 13:54:37 +00:00
ad3dea06a9
Added __cxa_bad_cast and __cxa_bad_typeid and placeholder NORETURN macro
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llvm-svn: 132524
2011-06-03 02:04:41 +00:00
4a88971ac1
Introduce cxa_virtual.cpp and cxa_guard.cpp. Contributed by Nick Lewycky, Howard Hinnant and John McCall
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llvm-svn: 132009
2011-05-24 22:01:16 +00:00
f3f1a9c942
Add goal
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llvm-svn: 131703
2011-05-19 23:38:38 +00:00
30ab971979
Fix think-o
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llvm-svn: 131700
2011-05-19 23:37:21 +00:00
d13581e492
testing
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llvm-svn: 131694
2011-05-19 22:57:05 +00:00
58bc7ff892
testing
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llvm-svn: 131693
2011-05-19 22:56:33 +00:00
7b0290da3f
Add Mac OS X as supported platform.
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llvm-svn: 131686
2011-05-19 22:03:11 +00:00
4ed80a3372
Add Mac OS X as supported platform.
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llvm-svn: 131685
2011-05-19 22:02:38 +00:00
d3da57f99b
initial import
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llvm-svn: 130921
2011-05-05 15:27:28 +00:00
Howard Hinnant