llvm-mirror/lib/Support
2011-09-16 18:36:31 +00:00
..
Unix Include limits.h to make sure PATH_MAX is known on Solaris 10. 2011-09-14 21:49:42 +00:00
Windows lib/Support/Windows/Windows.h: Update required IE ver. 0x0600 should be enough for Windows XP. 2011-08-23 03:49:11 +00:00
Allocator.cpp Add BumpPtrAllocator::getTotalMemory() to allow clients to query how much memory a BumpPtrAllocator allocated. 2011-04-18 22:44:46 +00:00
APFloat.cpp Silence a bunch (but not all) "variable written but not read" warnings 2011-08-12 14:54:45 +00:00
APInt.cpp Add APInt support for converting to/from hexatridecimal strings 2011-09-14 15:54:46 +00:00
APSInt.cpp Added FoldingSet style 'profiling' support for APSInt. 2008-01-19 04:31:12 +00:00
Atomic.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
BlockFrequency.cpp Optimize 96-bit division a little bit. 2011-07-27 16:00:40 +00:00
BranchProbability.cpp BranchProbability::print returns void now. 2011-07-25 22:27:42 +00:00
circular_raw_ostream.cpp clean this up, fix std::min ambiguity on some platforms. 2010-04-09 20:43:54 +00:00
CMakeLists.txt Add the DataExtractor utility class. 2011-09-13 19:42:16 +00:00
CommandLine.cpp CommandLine: Add support for 64 bit unsigned integer options. 2011-09-15 21:17:37 +00:00
ConstantRange.cpp Trim includes. 2011-07-27 15:20:06 +00:00
COPYRIGHT.regex Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
CrashRecoveryContext.cpp lib/Support/CrashRecoveryContext.cpp: Add Win32 support to CrashRecoveryContext. Thanks to Aaron Ballman! 2011-08-20 06:35:36 +00:00
DAGDeltaAlgorithm.cpp Use const_iterator where appropriate. 2010-06-08 17:21:57 +00:00
DataExtractor.cpp Add the DataExtractor utility class. 2011-09-13 19:42:16 +00:00
Debug.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
DeltaAlgorithm.cpp DeltaAlgorithm: Tweak split to split by first/second half instead of even/odd, since adjacent changes are more likely to be related. 2010-06-08 16:21:26 +00:00
Disassembler.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Dwarf.cpp Add some more DWARF extensions from: 2011-09-15 05:21:03 +00:00
DynamicLibrary.cpp Make DynamicLibrary thread-safe w/r/t call to dlerror() after dlopen(). PR10718 2011-08-22 19:01:52 +00:00
Errno.cpp lib/Support/Errno.cpp: Check strerror_s() with HAVE_DECL_STRERROR_S in config.h.*. 2011-02-09 04:18:48 +00:00
ErrorHandling.cpp Like the coding standards say, do not use "using namespace std". 2011-04-23 09:06:00 +00:00
FileUtilities.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
FoldingSet.cpp Simplify & microoptimize code. No intended functionality change. 2011-07-18 00:00:20 +00:00
FormattedStream.cpp Add missing standard headers. Patch by Joerg Sonnenberger! 2010-12-19 20:43:38 +00:00
GraphWriter.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Host.cpp Intel family 6 model 44 is Gulftown/Westmere-EP and doesn't have AVX. 2011-08-25 18:05:56 +00:00
IncludeFile.cpp Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
IntEqClasses.cpp Use IntEqClasses to compute connected components of live intervals. 2010-12-21 00:48:17 +00:00
IntervalMap.cpp Add IntervalMap::iterator::set{Start,Stop,Value} methods that allow limited 2010-12-03 19:02:00 +00:00
IsInf.cpp Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
IsNAN.cpp Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
Makefile Merge System into Support. 2010-11-29 18:16:10 +00:00
ManagedStatic.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Memory.cpp One more patch towards JIT support for Mips. 2011-09-14 03:00:41 +00:00
MemoryBuffer.cpp use 64-bit types instead of off_t/size_t to avoid the issue when 2011-09-15 23:13:00 +00:00
MemoryObject.cpp Report failure if there are less bytes than requested in a MemoryObject. 2011-08-27 07:45:46 +00:00
Mutex.cpp Check the errorcode. 2011-02-18 00:47:07 +00:00
Path.cpp ObjectFile: Add support for mach-o-style dSYM companion files. 2011-09-14 00:39:22 +00:00
PathV2.cpp Fix a minor bug in fs::create_directories. Patch by Albert Wong. 2011-09-16 18:36:31 +00:00
PluginLoader.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
PrettyStackTrace.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
Process.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Program.cpp Have Program::Wait return -2 for crashed and timeouts instead of embedding 2011-05-21 00:56:46 +00:00
raw_os_ostream.cpp Make some methods const. The only interesting change here is that 2009-12-19 01:38:42 +00:00
raw_ostream.cpp Fix integer overflow bug in raw_ostream::write. This showed up as a 2011-08-28 03:30:02 +00:00
README.txt.system Merge System into Support. 2010-11-29 18:16:10 +00:00
regcclass.h Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
regcname.h Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
regcomp.c lib/Support/regcomp.c: Fix cygwin warning. 2011-03-08 12:25:29 +00:00
regengine.inc Various MSVC warning fixes about truncated 64 bit shifts and const pointers passed to free. 2010-04-08 15:25:57 +00:00
regerror.c More MSVC warning fixes: 2009-09-06 12:26:28 +00:00
regex2.h Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
regex_impl.h Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
Regex.cpp regexes are allowed to match empty things, e.g. {{.*}} in filecheck. 2011-04-09 06:29:24 +00:00
regexec.c lib/Support/regexec.c: Let Regex LLP64-aware. 2010-12-16 01:48:15 +00:00
regfree.c Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
regstrlcpy.c Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
regutils.h More MSVC warning fixes: 2009-09-06 12:26:28 +00:00
RWMutex.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
SearchForAddressOfSpecialSymbol.cpp build: Go back to dropping __eprintf reference when building with Clang, see 2010-12-07 16:29:44 +00:00
Signals.cpp Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
SmallPtrSet.cpp Prevent infinite growth of SmallPtrSet instances. 2011-03-30 18:32:48 +00:00
SmallVector.cpp After some discussion with djg, teach SmallVector to grow from a zero 2010-09-02 21:55:03 +00:00
SourceMgr.cpp Add new -d option to tblgen. It writes a make(1)-style dependency file. 2011-06-01 13:10:15 +00:00
Statistic.cpp Support: Add llvm::AreStatisticsEnabled(). 2011-02-26 23:17:12 +00:00
StringExtras.cpp move tier out of an anonymous namespace, it doesn't make sense 2011-07-21 06:21:31 +00:00
StringMap.cpp Reset StringMap's NumTombstones on clears and rehashes. 2011-03-30 18:32:51 +00:00
StringPool.cpp Don't pass StringRef by reference. 2010-07-14 22:38:02 +00:00
StringRef.cpp Remove bounded StringRef::compare() since nothing but Clang SA was using it and it is just as easy to use StringRef::substr() preceding StringRef::compare() to achieve the same thing. 2011-04-28 20:20:12 +00:00
system_error.cpp Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with error_code &ec. And fix clients. 2010-12-09 17:36:48 +00:00
SystemUtils.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
TargetRegistry.cpp Move TargetRegistry and TargetSelect from Target to Support where they belong. 2011-08-24 18:08:43 +00:00
Threading.cpp Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +00:00
ThreadLocal.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Timer.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
TimeValue.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
ToolOutputFile.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Triple.cpp Add AMDIL as valid target triple to LLVM. 2011-08-29 15:44:55 +00:00
Twine.cpp Add Twine support for characters, and switch twine to use a union internally 2011-07-24 20:44:30 +00:00
Valgrind.cpp Revert previous commit. It seems that whether casting to void 2011-07-02 13:14:22 +00:00

Design Of lib/System
====================

The software in this directory is designed to completely shield LLVM from any
and all operating system specific functionality. It is not intended to be a
complete operating system wrapper (such as ACE), but only to provide the
functionality necessary to support LLVM.

The software located here, of necessity, has very specific and stringent design
rules. Violation of these rules means that cracks in the shield could form and
the primary goal of the library is defeated. By consistently using this library,
LLVM becomes more easily ported to new platforms since the only thing requiring
porting is this library.

Complete documentation for the library can be found in the file:
  llvm/docs/SystemLibrary.html
or at this URL:
  http://llvm.org/docs/SystemLibrary.html

While we recommend that you read the more detailed documentation, for the
impatient, here's a high level summary of the library's requirements.

 1. No system header files are to be exposed through the interface.
 2. Std C++ and Std C header files are okay to be exposed through the interface.
 3. No exposed system-specific functions.
 4. No exposed system-specific data.
 5. Data in lib/System classes must use only simple C++ intrinsic types.
 6. Errors are handled by returning "true" and setting an optional std::string
 7. Library must not throw any exceptions, period.
 8. Interface functions must not have throw() specifications.
 9. No duplicate function impementations are permitted within an operating
    system class.

To accomplish these requirements, the library has numerous design criteria that
must be satisfied. Here's a high level summary of the library's design criteria:

 1. No unused functionality (only what LLVM needs)
 2. High-Level Interfaces
 3. Use Opaque Classes
 4. Common Implementations
 5. Multiple Implementations
 6. Minimize Memory Allocation
 7. No Virtual Methods