llvm-6502/lib/Support
Michael J. Spencer 924aa23b74 Support/Windows/PathV2: Fix header comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121383 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-09 17:37:42 +00:00
..
Unix Support: Remove Alarm. It is unused (via local grep and google code search). 2010-12-07 18:41:59 +00:00
Windows Support/Windows/PathV2: Fix header comment. 2010-12-09 17:37:42 +00:00
Allocator.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
APFloat.cpp PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and 2010-12-07 08:25:19 +00:00
APInt.cpp PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and 2010-12-07 08:25:19 +00:00
APSInt.cpp
Atomic.cpp Merge System into Support. 2010-11-29 18:16:10 +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 Support: Remove Alarm. It is unused (via local grep and google code search). 2010-12-07 18:41:59 +00:00
CommandLine.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
ConstantRange.cpp PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and 2010-12-07 08:25:19 +00:00
COPYRIGHT.regex Add regular expression matching support, based on OpenBSD regexec()/regcomp() 2009-08-30 08:24:09 +00:00
CrashRecoveryContext.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
DAGDeltaAlgorithm.cpp Use const_iterator where appropriate. 2010-06-08 17:21:57 +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 the entire range of DW_OP_lit[0..31], DW_OP_reg[0..31], and 2010-06-17 01:23:24 +00:00
DynamicLibrary.cpp Don't leak the mutex when loading dynamic libraries. 2010-12-07 07:56:20 +00:00
Errno.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
ErrorHandling.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
FileUtilities.cpp Fix whitespace. 2010-12-09 17:37:32 +00:00
FoldingSet.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
FormattedStream.cpp Make tool_output_file's raw_ostream instance a member variable instead 2010-09-01 14:20:41 +00:00
GraphWriter.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Host.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
IncludeFile.cpp Now to chant the magical incantation that will exorcise the System library 2010-11-29 19:44:50 +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
IsNAN.cpp
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 Merge System into Support. 2010-11-29 18:16:10 +00:00
MemoryBuffer.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
MemoryObject.cpp canonicalize namespace gymnastics 2009-09-09 23:46:42 +00:00
Mutex.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Path.cpp Delete Path::appendSuffix's return value; it wasn't used anywhere, which 2010-12-01 02:46:41 +00:00
PathV2.cpp Support/FileSystem: Change file_status predicate functions that cannot fail to 2010-12-09 17:37:02 +00:00
PluginLoader.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
PrettyStackTrace.cpp Apparently OS X 10.4 doesn't have __crashreporter_info__. 2010-12-03 07:45:22 +00:00
Process.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
Program.cpp Merge System into Support. 2010-11-29 18:16:10 +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 Merge System into Support. 2010-11-29 18:16:10 +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 Fix may-be-used-uninitialized warning. 2009-09-08 16:14:54 +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 Don't pass StringRef by reference. 2010-07-14 22:38:02 +00:00
regexec.c Push const through the regex engine. Fixes some of the warnings in PR6616. 2010-04-05 17:50:20 +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 Merge System into Support. 2010-11-29 18:16:10 +00:00
SmallPtrSet.cpp Rather than giving SmallPtrSetImpl a member field SmallArray which is magically 2010-06-30 15:02:37 +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 Fix whitespace. 2010-12-09 17:37:32 +00:00
Statistic.cpp Merge System into Support. 2010-11-29 18:16:10 +00:00
StringExtras.cpp Fix refacto reported by Nicolas Geoffray. 2010-01-18 12:40:05 +00:00
StringMap.cpp Pass StringRef by value. 2009-11-06 10:58:06 +00:00
StringPool.cpp Don't pass StringRef by reference. 2010-07-14 22:38:02 +00:00
StringRef.cpp PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and 2010-12-07 08:25:19 +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 Merge System into Support. 2010-11-29 18:16:10 +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 Remove PIC16 remnants. 2010-11-27 18:20:30 +00:00
Twine.cpp Support/ADT/Twine: Make toNullTerminatedStringRef not rely on UB :(. 2010-12-03 05:42:25 +00:00
Valgrind.cpp Merge System into Support. 2010-11-29 18:16:10 +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