llvm-project/llvm/lib/Support
David Majnemer 3a4ce89f18 [Support] Simplify Triple::getOSVersion
Those who are interested in the Android version can use
getEnvironmentVersion instead of getOSVersion.

llvm-svn: 238798
2015-06-01 23:45:25 +00:00
..
Unix Use auto instead of the long type name. NFC. 2015-05-07 19:56:23 +00:00
Windows Rangify for loop in Cleanup(), NFC. 2015-05-19 13:32:19 +00:00
APFloat.cpp Fix -Wpessimizing-move warnings by removing std::move calls. 2015-04-30 23:07:00 +00:00
APInt.cpp Fix APInt long division algorithm 2015-04-24 07:38:39 +00:00
APSInt.cpp
ARMBuildAttrs.cpp
ARMWinEH.cpp
Allocator.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
Atomic.cpp
BlockFrequency.cpp
BranchProbability.cpp
CMakeLists.txt TargetParser: FPU/ARCH/EXT parsing refactory - NFC 2015-05-08 21:04:27 +00:00
COM.cpp Make an RAII com initializer. 2015-04-27 17:19:26 +00:00
COPYRIGHT.regex
CommandLine.cpp Use 'override/final' instead of 'virtual' for overridden methods 2015-04-11 02:11:45 +00:00
Compression.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
ConvertUTF.c
ConvertUTFWrapper.cpp Make UTF8->UTF16 conversion null terminate output on empty input. 2015-02-08 18:08:51 +00:00
CrashRecoveryContext.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
DAGDeltaAlgorithm.cpp Fix uses of reserved identifiers starting with an underscore followed by an uppercase letter 2015-03-16 18:06:57 +00:00
DataExtractor.cpp
DataStream.cpp Use 'override/final' instead of 'virtual' for overridden methods 2015-04-11 02:11:45 +00:00
Debug.cpp Avoid creating and destroying a std::string on every iteration. 2015-05-27 18:11:07 +00:00
DeltaAlgorithm.cpp
Dwarf.cpp [DWARF parser] Add basic support for DWZ DWARF multifile extensions. 2015-05-19 20:29:28 +00:00
DynamicLibrary.cpp Revert "Limit the symbol search in DynamicLibrary to the module that was opened." 2014-08-27 17:51:43 +00:00
Errno.cpp Silence warning: variable 'buffer' set but not used. 2014-12-04 21:36:38 +00:00
ErrorHandling.cpp [cleanup] Re-sort all the #include lines in LLVM using 2015-01-14 11:23:27 +00:00
FileOutputBuffer.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
FileUtilities.cpp Remove some calls to std::move. 2014-08-01 14:31:55 +00:00
FoldingSet.cpp fix typos; NFC 2015-04-06 16:21:12 +00:00
FormattedStream.cpp Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used. 2015-03-23 19:32:43 +00:00
GraphWriter.cpp [GraphWriter] Attempt to open .dot files with xdg-open/open first 2015-04-03 17:22:36 +00:00
Hashing.cpp
Host.cpp [SystemZ] Add z13 vector facility and MC support 2015-05-05 19:23:40 +00:00
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
LEB128.cpp
LLVMBuild.txt
LineIterator.cpp Add CRLF support to LineIterator. 2014-11-03 14:09:47 +00:00
Locale.cpp
LockFileManager.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
MD5.cpp Make the MD5 result name consistent between functions, header and source. 2014-10-06 13:48:07 +00:00
Makefile
ManagedStatic.cpp Revert 220932. 2014-11-05 04:44:31 +00:00
MathExtras.cpp Fix llvm::huge_valf multiple initializations with Visual C++. 2014-09-27 14:41:29 +00:00
Memory.cpp
MemoryBuffer.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
MemoryObject.cpp Make readBytes pure virtual. Every real implementation has it. 2014-11-12 02:30:38 +00:00
Mutex.cpp
Options.cpp Defining a new API for debug options that doesn't rely on static global cl::opts. 2014-10-15 21:54:35 +00:00
Path.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
PluginLoader.cpp
PrettyStackTrace.cpp Fix the preprocessor checks used to determine if backtraces have been enabled. 2015-01-29 07:53:13 +00:00
Process.cpp Assert that Process::FindInEnvPath() is passed a relative path. 2015-04-24 22:18:46 +00:00
Program.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
README.txt.system
RWMutex.cpp
RandomNumberGenerator.cpp Add missing include that MSVC complains about. 2015-03-23 18:19:41 +00:00
Regex.cpp Remove more superfluous .str() and replace std::string concatenation with Twine. 2015-03-30 15:42:36 +00:00
ScaledNumber.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp Sync the __builtin_expects for our 3 quadratically probed hash table implementations. 2015-02-23 16:41:36 +00:00
SmallVector.cpp
SourceMgr.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
SpecialCaseList.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
Statistic.cpp
StreamingMemoryObject.cpp Fix StreamingMemoryObject to respect known object size. 2015-05-21 19:40:19 +00:00
StringExtras.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
StringMap.cpp Sync the __builtin_expects for our 3 quadratically probed hash table implementations. 2015-02-23 16:41:36 +00:00
StringPool.cpp
StringRef.cpp Simplify creation of a bunch of ArrayRefs by using None, makeArrayRef or just letting them be implicitly created. 2014-08-27 05:25:25 +00:00
SystemUtils.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
TargetParser.cpp [ARMTargetParser] Move IAS arch ext parser. NFC 2015-05-30 10:30:02 +00:00
TargetRegistry.cpp Readdress r236990, use of static members on a non-static variable. 2015-05-11 22:20:48 +00:00
ThreadLocal.cpp ThreadLocal: Move Unix-specific code out of Support/ThreadLocal.cpp 2014-12-15 01:19:53 +00:00
Threading.cpp Revert 220932. 2014-11-05 04:44:31 +00:00
TimeValue.cpp Cleaning up static initializers in TimeValue. 2014-08-29 01:05:12 +00:00
Timer.cpp Purge unused includes throughout libSupport. 2015-03-23 18:07:13 +00:00
ToolOutputFile.cpp Modernize raw_fd_ostream's constructor a bit. 2014-08-25 18:16:47 +00:00
Triple.cpp [Support] Simplify Triple::getOSVersion 2015-06-01 23:45:25 +00:00
Twine.cpp Reformat. 2015-05-25 01:43:34 +00:00
Unicode.cpp
Valgrind.cpp Provide the same ABI regardless of NDEBUG 2015-02-19 05:30:16 +00:00
Watchdog.cpp
YAMLParser.cpp YAML: Null terminate block scalar's value. 2015-05-21 19:45:02 +00:00
YAMLTraits.cpp [YAMLIO] Make line-wrapping configurable and test it. 2015-05-29 17:56:28 +00:00
circular_raw_ostream.cpp
raw_os_ostream.cpp
raw_ostream.cpp Fix indentation. NFC. 2015-05-30 07:35:21 +00:00
regcclass.h
regcname.h
regcomp.c Use wider type for overflow check on LLP64 platforms like Win64, found by clang-cl -Wtautological 2015-02-26 21:07:30 +00:00
regengine.inc
regerror.c
regex2.h
regex_impl.h
regexec.c
regfree.c
regstrlcpy.c
regutils.h

README.txt.system

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