llvm-6502/lib/Support
David Blaikie ec31a302b7 Remove uses of the redundant ".reset(nullptr)" of unique_ptr, in favor of ".reset()"
It's also possible to just write "= nullptr", but there's some question
of whether that's as readable, so I leave it up to authors to pick which
they prefer for now. If we want to discuss standardizing on one or the
other, we can do that at some point in the future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213438 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-19 01:05:11 +00:00
..
Unix Build fix for systems without futimes/futimens 2014-06-30 18:57:04 +00:00
Windows Perform wildcard expansion in Process::GetArgumentVector on Windows (PR17098) 2014-07-16 00:52:11 +00:00
Allocator.cpp [Allocator] Hoist the external helper function into a namespace scope 2014-04-14 06:42:56 +00:00
APFloat.cpp APFloat: x - NaN needs to flip the signbit of NaN when x is a number. 2014-06-08 16:53:31 +00:00
APInt.cpp [Modules] Fix potential ODR violations by sinking the DEBUG_TYPE 2014-04-22 03:07:47 +00:00
APSInt.cpp
ARMBuildAttrs.cpp ARM: update build attributes for ABI r2.09 2014-01-19 08:25:35 +00:00
ARMWinEH.cpp Support: add Windows ARM EH data structures 2014-06-02 01:17:49 +00:00
Atomic.cpp Fix .cpp files claiming to be header files 2014-06-20 01:36:00 +00:00
BlockFrequency.cpp blockfreq: Defer to BranchProbability::scale() (again) 2014-04-29 16:31:29 +00:00
BranchProbability.cpp BranchProb: Simplify printing code 2014-04-29 17:07:42 +00:00
circular_raw_ostream.cpp
CMakeLists.txt Drop the udis86 wrapper from llvm::sys 2014-07-17 20:05:29 +00:00
CommandLine.cpp Support: Use a range-based for 2014-07-14 19:24:13 +00:00
Compression.cpp Simplify compression API by compressing into a SmallVector rather than a MemoryBuffer 2014-04-05 21:53:04 +00:00
ConvertUTF.c Support/ConvertUTF: restore compatibility with MSVC, which only implements C89 2014-06-16 11:22:33 +00:00
ConvertUTFWrapper.cpp [Support] Add a Unicode conversion wrapper from UTF16 to UTF8 2013-07-16 17:14:33 +00:00
COPYRIGHT.regex
CrashRecoveryContext.cpp For CrashRecoveryContext::RunSafelyOnThread, propagate Darwin's PRIO_DARWIN_BG to the new thread if it is 2014-06-25 23:54:50 +00:00
DAGDeltaAlgorithm.cpp [Modules] Make Support/Debug.h modular. This requires it to not change 2014-04-21 22:55:11 +00:00
DataExtractor.cpp Using llvm::sys::swapByteOrder() for the common case of byte-swapping a value in place 2014-06-14 13:18:07 +00:00
DataStream.cpp Remove 'using std::errro_code' from lib. 2014-06-13 02:24:39 +00:00
Debug.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
DeltaAlgorithm.cpp
Dwarf.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
DynamicLibrary.cpp Fix .cpp files claiming to be header files 2014-06-20 01:36:00 +00:00
Errno.cpp Fix some rather confusing indentation and control flow in the errno 2013-09-02 05:55:10 +00:00
ErrorHandling.cpp Merge lib/Support/WindowsError.cpp into ib/Support/ErrorHandling.cpp. 2014-06-17 18:06:45 +00:00
FileOutputBuffer.cpp Remove uses of the redundant ".reset(nullptr)" of unique_ptr, in favor of ".reset()" 2014-07-19 01:05:11 +00:00
FileUtilities.cpp Update the MemoryBuffer API to use ErrorOr. 2014-07-06 17:43:13 +00:00
FoldingSet.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
FormattedStream.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
GraphWriter.cpp Don't use 'using std::error_code' in include/llvm. 2014-06-12 21:46:39 +00:00
Hashing.cpp
Host.cpp Add support for ppc64/power8 as a host 2014-06-26 13:37:03 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
LEB128.cpp Don't inline get[S|U]LEB128Size() until they are proved to be hot. 2014-02-22 15:39:39 +00:00
LineIterator.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
LLVMBuild.txt
Locale.cpp Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32. 2013-09-04 16:00:12 +00:00
LockFileManager.cpp Update the MemoryBuffer API to use ErrorOr. 2014-07-06 17:43:13 +00:00
Makefile Support: Inject LLVM_VERSION_INFO into the Support library 2014-06-17 06:52:47 +00:00
ManagedStatic.cpp Fix the MinGW builder. Apparently std::call_once and 2014-06-21 00:24:51 +00:00
MD5.cpp Add support for adding the contents of a StringRef to the MD5 hash. 2013-05-31 22:34:56 +00:00
Memory.cpp
MemoryBuffer.cpp Update the MemoryBuffer API to use ErrorOr. 2014-07-06 17:43:13 +00:00
MemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
Mutex.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
Path.cpp Don't leak a file descriptor. 2014-06-25 14:35:59 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
Process.cpp Refactor the code in clang to find a file in a PATH like environment variable into a helper function 2014-06-30 19:54:20 +00:00
Program.cpp Fix .cpp files claiming to be header files 2014-06-20 01:36:00 +00:00
RandomNumberGenerator.cpp Random Number Generator (llvm) 2014-06-25 15:21:42 +00:00
raw_os_ostream.cpp
raw_ostream.cpp Typo: exists -> exits 2014-07-17 18:33:44 +00:00
README.txt.system
regcclass.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
regcname.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
regcomp.c Fix known typos 2014-01-24 17:20:08 +00:00
regengine.inc Clean up language and grammar. 2014-05-20 17:11:11 +00:00
regerror.c
regex2.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
regex_impl.h
Regex.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
regexec.c
regfree.c
regstrlcpy.c
regutils.h adding re-include guards into lib/Support/reg*.h 2014-06-12 16:07:56 +00:00
RWMutex.cpp [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
ScaledNumber.cpp Support: Move class ScaledNumber 2014-06-24 00:38:09 +00:00
SearchForAddressOfSpecialSymbol.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Signals.cpp
SmallPtrSet.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
SmallVector.cpp
SourceMgr.cpp SourceMgr: consistently use 'unsigned' for the memory buffer ID type 2014-07-09 08:30:15 +00:00
SpecialCaseList.cpp Remove move assignment operator to appease older GCCs. 2014-07-10 04:39:40 +00:00
Statistic.cpp Revert "[C++11] Replace LLVM atomics with std::atomic." 2014-03-03 18:02:34 +00:00
StreamableMemoryObject.cpp [C++11] Remove 'virtual' keyword from methods marked with 'override' keyword. 2014-03-10 03:53:12 +00:00
StringExtras.cpp
StringMap.cpp Recommit 211309 (StringMap::insert), reverted in 211328 due to issues with private, but non-deleted, move members. 2014-06-23 18:28:53 +00:00
StringPool.cpp Convert StringMapEntry::Create to use StringRef instead of start/end pointers. Simpliies all in tree call sites. No functional change. 2014-06-11 05:35:56 +00:00
StringRef.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
StringRefMemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
SystemUtils.cpp Move PrependMainExecutablePath next to its only user. 2013-06-14 15:12:13 +00:00
TargetRegistry.cpp Remove obsolete function TargetRegistry::getClosestTargetForJIT() 2014-07-01 10:47:13 +00:00
Threading.cpp Re-apply r211287: Remove support for LLVM runtime multi-threading. 2014-06-27 15:13:01 +00:00
ThreadLocal.cpp [C++11] Make use of 'nullptr' in the Support library. 2014-04-07 04:17:22 +00:00
Timer.cpp Kill the LLVM global lock. 2014-06-19 16:17:42 +00:00
TimeValue.cpp Fix 'platform-specific' hyphenations 2014-06-30 18:57:16 +00:00
ToolOutputFile.cpp Use the simpler version of sys::fs::remove when possible. 2014-01-10 21:40:29 +00:00
Triple.cpp Add MIPS Technologies to the vendors in llvm::Triple. 2014-07-18 14:28:19 +00:00
Twine.cpp Remove unnecessary llvm:: qualification. 2014-02-26 23:27:16 +00:00
Unicode.cpp Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32. 2013-09-04 16:00:12 +00:00
Valgrind.cpp Don't mark the declarations of the TSan annotation functions as weak. 2014-03-30 11:20:25 +00:00
Watchdog.cpp Add a new watchdog timer interface. The interface does not permit handling timeouts, so 2013-03-26 01:27:52 +00:00
YAMLParser.cpp [C++11] Replace some comparisons with 'nullptr' with simple boolean checks to reduce verbosity. 2014-04-09 04:20:00 +00:00
YAMLTraits.cpp Finishing touch for the std::error_code transition. 2014-06-13 17:20:48 +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