llvm-project/llvm/lib/Support
Adrian Prantl 31631e4a47 Pull in a couple of new constants from the upcoming DWARF 5 standard.
llvm-svn: 197611
2013-12-18 21:48:14 +00:00
..
Unix Build fix for Android NDK which has neither futimes nor futimens 2013-12-11 15:42:33 +00:00
Windows Correct word hyphenations 2013-12-05 05:44:44 +00:00
APFloat.cpp Correct word hyphenations 2013-12-05 05:44:44 +00:00
APInt.cpp Remove APInt::extractBit since it is already implemented via operator[]. Change tests for extractBit to test operator[]. 2013-12-13 22:00:19 +00:00
APSInt.cpp
Allocator.cpp [BumpPtrAllocator] Move DefaultSlabAllocator to a member of BumpPtrAllocator, instead of a static variable. 2013-08-28 01:02:21 +00:00
Atomic.cpp XLC supports the same atomic functions as GCC, use them. 2012-11-02 20:54:45 +00:00
BlockFrequency.cpp [block-freq] Add a right shift to BlockFrequency that saturates at 1. 2013-12-14 02:24:22 +00:00
BranchProbability.cpp
CMakeLists.txt Revert r197438 and r197447 until we figure out how to avoid circular dependency at link time 2013-12-17 01:19:59 +00:00
COPYRIGHT.regex
CommandLine.cpp Support: Fix handling of args that begin with @ but aren't files 2013-12-06 22:56:19 +00:00
Compression.cpp Expose CRC-32 implementation from zlib 2013-08-14 16:03:29 +00:00
ConstantRange.cpp [ConstantRange] improve my previous patch per Nick suggestion 2013-10-31 19:53:53 +00:00
ConvertUTF.c Move UTF conversion routines from clang/lib/Basic to llvm/lib/Support 2013-01-30 12:05:05 +00:00
ConvertUTFWrapper.cpp [Support] Add a Unicode conversion wrapper from UTF16 to UTF8 2013-07-16 17:14:33 +00:00
CrashRecoveryContext.cpp This switches CrashRecoveryContext to using ManagedStatic for its global Mutex and 2013-09-12 17:46:57 +00:00
DAGDeltaAlgorithm.cpp
DataExtractor.cpp Make the host endianness check an integer constant expression. 2013-04-15 14:44:24 +00:00
DataStream.cpp Add a wrapper for open. 2013-07-16 19:44:17 +00:00
Debug.cpp Fix accidental concatenation for "outputuntil" in the -debug-buffer-size option description. 2013-02-20 22:33:46 +00:00
DeltaAlgorithm.cpp Revert r171829 "Split changeset_ty using iterators instead of loops" as it breaks the VS2008 build 2013-01-14 14:13:06 +00:00
Disassembler.cpp Remove some std stream usage from Support and TableGen 2013-08-06 22:51:21 +00:00
Dwarf.cpp Pull in a couple of new constants from the upcoming DWARF 5 standard. 2013-12-18 21:48:14 +00:00
DynamicLibrary.cpp Make sure LLVMLoadLibraryPermanently gets an extern "C" symbol. 2013-11-13 15:35:13 +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 Revert r194865 and r194874. 2013-11-18 09:31:53 +00:00
FileOutputBuffer.cpp Create files with the correct permission instead of changing it afterwards. 2013-07-08 15:22:09 +00:00
FileUtilities.cpp MemoryBuffer::getFile handles zero sized files, no need to duplicate the test. 2013-07-10 17:30:39 +00:00
FoldingSet.cpp Make the host endianness check an integer constant expression. 2013-04-15 14:44:24 +00:00
FormattedStream.cpp Add line tracking support to FormattedStream 2013-05-08 20:29:10 +00:00
GraphWriter.cpp Remove several unused variables. 2013-10-01 13:32:03 +00:00
Hashing.cpp
Host.cpp Fix Typo. 2013-12-12 16:17:40 +00:00
IncludeFile.cpp
IntEqClasses.cpp
IntervalMap.cpp
IntrusiveRefCntPtr.cpp
IsInf.cpp
IsNAN.cpp
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 Fix boolean logic in LockFileManager and test it 2013-08-07 01:22:04 +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
Makefile
ManagedStatic.cpp
Memory.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
MemoryBuffer.cpp MemoryBuffer: Increase the alignment of small file buffers to 16 2013-12-16 18:18:12 +00:00
MemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
Mutex.cpp
Path.cpp Path: Recognize COFF import library file magic. 2013-11-15 21:22:02 +00:00
PluginLoader.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
PrettyStackTrace.cpp Make the pretty stack trace be an opt-in, rather than opt-out, facility. Enable pretty 2013-11-04 02:22:25 +00:00
Process.cpp Support ANSI escape code on Windows 2013-09-11 00:36:48 +00:00
Program.cpp Add non-blocking Wait() for launched processes 2013-10-01 14:28:18 +00:00
README.txt.system
RWMutex.cpp
Regex.cpp Add missing escape characters to the new Regex::escape() function 2013-12-12 02:51:58 +00:00
SearchForAddressOfSpecialSymbol.cpp
Signals.cpp
SmallPtrSet.cpp Lift self-copy protection up to the header file and add self-move 2013-11-26 00:54:44 +00:00
SmallVector.cpp
SourceMgr.cpp SourceMgr diagnotics printing: fix a bug where printing a fixit for a source 2013-09-27 21:24:36 +00:00
Statistic.cpp Disable statistics on Release builds and move tests that depend on -stats. 2013-03-08 22:56:31 +00:00
StreamableMemoryObject.cpp Remove the Copied parameter from MemoryObject::readBytes. 2013-05-24 10:54:58 +00:00
StringExtras.cpp
StringMap.cpp
StringPool.cpp
StringRef.cpp Add {start,end}with_lower methods to StringRef. 2013-10-30 18:32:26 +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 Fix pr18235. 2013-12-13 16:05:32 +00:00
ThreadLocal.cpp
Threading.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00
TimeValue.cpp Fix initialization-order bug in llvm::Support::TimeValue. TimeValue::now() is explicitly called during module initialization of lib/Support/Process.cpp. It reads the field of global object PosixZeroTime, which is not guaranteed to be initialized at this point. Found by AddressSanitizer with -fsanitize=init-order option. 2013-02-19 11:35:39 +00:00
Timer.cpp Add a wrapper for open. 2013-07-16 19:44:17 +00:00
ToolOutputFile.cpp Add a wrapper for open. 2013-07-16 19:44:17 +00:00
Triple.cpp Recognize EABIHF as environment and use it for RTAPI + VFP. 2013-12-16 18:51:28 +00:00
Twine.cpp
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
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 [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
YAMLTraits.cpp revert r194655 2013-11-21 00:20:10 +00:00
circular_raw_ostream.cpp
raw_os_ostream.cpp
raw_ostream.cpp raw_fd_ostream: Be more verbose about the reason when opening a file fails. 2013-10-03 16:59:14 +00:00
regcclass.h
regcname.h
regcomp.c Add backreference matching capabilities to Support/Regex, with 2012-11-28 19:00:02 +00:00
regengine.inc
regerror.c
regex2.h
regex_impl.h
regexec.c
regfree.c
regstrlcpy.c
regutils.h
system_error.cpp Use the new script to sort the includes of every file under lib. 2012-12-03 16:50:05 +00:00

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